[Due to the increasing size of the archives, each topic page now contains only the prior 365 days of content. Access to older stories is now solely through the Monthly Archive pages or the site search function.]
Volkswagen brings new 3.0L diesels to Amarok pickup
May 02, 2016
Volkswagen Commercial Vehicles is fitting its premium pick-up, the Amarok, with the latest generation of Volkswagen V6 diesel engines. The top performing 3.0-liter unit will deliver 550 N·m (406 lb-ft) of torque at 1,500 rpm; 224 PS (221 hp, 165 kW); and meet the Euro 6 emissions standard. At 550 N·m, this maximum torque is 130 N·m higher than in the previous model.
The highest gear’s long gear ratio in the manual or 8-speed automatic gearbox reduces revs and fuel consumption during consistently fast driving, and thus helps reduce noise levels and CO2 emissions. The combined NEDC fuel consumption of the new Amarok with 224 PS and 8-speed automatic gearbox is expected to be 7.6 liters/100 km (around 31 mpg US). This corresponds to a new top level of 199 grams CO2/km.
Ford introduces new 2.0L EcoBlue diesel; fuel consumption cut by up to 13%
April 26, 2016
In Europe, Ford revealed the all-new 2.0-liter EcoBlue diesel engine—the first in a new range of diesels that will offer optimized fuel efficiency and reduced CO2 and NOx emissions. Building on the performance and technology of Ford’s award-winning EcoBoost gasoline engines, the EcoBlue diesel range will deliver power outputs ranging from 100 PS to 240 PS (99 to 237 hp).
The four-cylinder 2.0-liter Ford EcoBlue debuts in the new Transit and Transit Custom commercial vehicles, increasing fuel efficiency by more than 10%. Drivability is enhanced with 20% more torque at 1,250 rpm compared with the outgoing equivalent power 2.2-liter TDCi diesel engine. The new engine also delivers passenger car refinement to the commercial segment, reducing radiated noise by 4 decibels at idle.
Volkswagen AG decides not to release interim report on diesel emissions investigation; cites current negotiations with US authorities
April 23, 2016
On Friday, Volkswagen AG announced that the Supervisory Board and the Management Board of Volkswagen have decided not to release the interim results of the investigation into the diesel emission cheating as originally planned. Disclosure of interim results at this point in time would “present unacceptable risks for Volkswagen” they company said and, therefore, cannot take place now.
The decision was based on the assessment of the US law firms retained by Volkswagen (Sullivan & Cromwell and Jones Day), which have both strongly advised against such a disclosure independently of each other.
German report on VW diesel scandal finds large gap between lab and real-world NOx emissions for German automakers; 630K vehicles in voluntary recall
April 22, 2016
A German inquiry launched as a result of the Volkswagen diesel emission scandal has found that there is a large gap between homologated emissions values from lab testing and real-world driving results for all German manufacturers.
German Transport Minister Alexander Dobrindt, who presented the results of the inquiry on Friday, said that only Volkswagen had used a software defeat device that detected test cycles (Prüfzykluserkennung) and altered calibrations accordingly. However, other manufacturers do use a thermal window (Thermofenster) technique that cuts back on emissions treatment at certain temperatures—presumably to protect the engine against damage.
Volvo Trucks used SuperTruck learnings to boost efficiency, performance in 2017 powertrains; wave piston, turbocompounding, injection
April 14, 2016
Key learnings from Volvo’s SuperTruck (earlier post) efforts played a critical role in the design and engineering of Volvo Trucks North America’s recently introduced 2017 powertrain, delivering improved fuel efficiency and performance to customers. (Earlier post.)
The development of several new features, such as the wave piston, turbo compounding and a common rail fuel injection system, was supported by the SuperTruck program, sponsored by the US Department of Energy (DOE).
New ACE researchers propose new diesel combustion concept; pathway to >50% BTE without WHR
April 11, 2016
A team at Japan’s New ACE Institute—an industry-funded research initiative founded to develop a new diesel combustion concept—has developed a new diffusion-combustion-based concept with multiple fuel injectors to overcome the trade-offs of thermal efficiency with energy loss and exhaust emissions typical of conventional diesel engines.
In a presentation at the 2016 SAE High Efficiency IC Engine Symposium, Noboru Uchida, general manager of research for New ACE, outlined the basic approach, which he said potentially offers a pathway to greater than 50% brake thermal efficiency without the use of waste heat recovery systems. A paper on their concept is also published in SAE International Journal of Engines.
MAN Diesel & Turbo delivers 1st IMO-certified two-stroke with Tier III NOx control, EGR systems
April 06, 2016
Hyundai’s Ship Building Division (HHI-SBD) has finalized a contract for 2 × Suezmax tankers for Turkish shipowner, Ditas Shipping. The 158,000-m3 crude-oil tankers will each be powered by individual MAN B&W 6G70ME-C9.5 two-stroke main-engines that feature integrated Exhaust Gas Recirculation (EGR) systems.
While there are already IMO Tier III-compliant vessels with EGR systems in service, the Suezmax newbuilds will be the first vessels with keel-laying after 1 January 2016 to be officially certified as complying with Tier III emission restrictions within existing North American NOx Emission Control Areas (NECAs) and the United States Caribbean Sea NECA.
Groupe Renault taking two actions to reduce real-world NOx from diesel Euro 6b vehicles; deploying in July 2016
April 05, 2016
Groupe Renault has studied and is deploying a number of actions designed to reduce the NOx emissions of its diesel Euro 6b vehicles in customer driving conditions without a noticeable impact on performance or fuel consumption. The measures will be applied in factory on diesel Euro 6b vehicles from July 2016.
From October 2016, customers who have already taken delivery of a Diesel Euro 6b vehicle can arrange to have the modifications applied, free of charge, via a visit to their Renault dealer. Groupe Renault is implementing two changes:
Opel outlines steps in engineering initiative for WLTP-based fuel consumption numbers and improved NOx reduction
March 29, 2016
Starting with the new Opel Astra from June 2016 onwards, and in addition to the official fuel consumption and CO2 information, Opel will publish fuel consumption numbers reflecting different driving behavior recorded under the WLTP test cycle. In addition, Opel will implement an initiative to improve NOx emissions on SCR (Selective Catalytic Reduction) diesel applications in new vehicles from August onwards.
EPA report: diesel engine grant program has delivered major air, public health benefits
March 26, 2016
Clean diesel grants aimed at cleaning up old diesel engines have greatly improved public health by cutting harmful pollution that causes premature deaths, asthma attacks, and missed school and workdays, according to a new report by the US Environmental Protection Agency (EPA).
Since its start in 2008, the Diesel Emission Reduction Act (DERA) program has significantly improved air quality for communities across the country by retrofitting and replacing older diesel engines. From 2009 to 2013, EPA awarded $520 million to retrofit or replace 58,800 engines in vehicles, vessels, locomotives or other pieces of equipment.
Volvo Trucks unveils new powertrains featuring increased power and 2.2 to 6.5% better fuel efficiency
March 22, 2016
Volvo Trucks North America launched several new integrated powertrain solutions, offering increased fuel efficiency, productivity, reliability, packaging, comfort and uptime. Volvo’s new powertrain offerings include multiple engine enhancements, such as turbo compounding for the Volvo D13 engine; the introduction of Volvo I-Shift with Crawler Gears automated manual transmission; and a one-box Exhaust Aftertreatment System (EATS).
As a result of the improvements, Volvo is delivering between 2.2 to 6.5% better fuel efficiency with the 2017 engines compared with the previous generation.
Audi unveils redesigned R18 diesel hybrid Le Mans racer for 2016 season
Audi unveiled its redesigned R18 diesel hybrid Le Mans racer for the 2016 World Endurance Championship (WEC) season. Among the new features in the R18 are a more radical aerodynamics concept, including a new safety cell; a Li-ion battery replacing the flywheel energy storage system; and a revised V6 TDI diesel engine. As a result, Audi’s LMP1 sports car is more powerful and more efficient than its predecessor; the new R18 consumes less fuel than any of the generations before it.
The new hybrid TDI powertrain delivers power output of more than 1,000 hp (746 kW), along with 10% less consumption that its immediate predecessor. The current V6 TDI consumes 32.4% less fuel than the first generation did in 2011.
Renault upgrades heavy-duty Trucks T for lower fuel consumption, higher payload
March 17, 2016
Less than three years after its launch and positive feedback from customers, Renault is upgrading the heavy-duty Trucks T to help it be even more cost efficient for its users. The 2016 version of the T benefits from improvements to the chassis and driveline, enabling it to reduce its consumption by up to a further 2%, while at the same time increasing the payload by up to 114 kg (251 lbs). It is also introducing Optivision, a predictive cruise control system with GPS.
Renault pursued three main tracks in the upgrade, in addition to basic engine efficiency improvements: improving the aerodynamics to reduce fuel consumption; reducing the weight to increase payload; and encouraging eco-driving by means of a predictive GPS navigation system, said Sophie Rivière, the Long Haul segment manager at Renault Trucks
DOE to award $12.5M to improve efficiency of medium- and heavy-duty trucks as part of new tech track for US-China initiative
March 13, 2016
The US Department of Energy is soliciting applications (DE-FOA-0001542) for the formation of a Consortium to pursue five identified R&D topic areas related to improving the operating efficiency of medium- and heavy-duty trucks. The Consortium that is funded through this solicitation will form a new technical track under the US-China Clean Energy Research Center, a bilateral initiative to encourage R&D collaboration and accelerate technology development and deployment in both countries.
Funding available is $12.5 million, and will support the US Consortium. In parallel, and with equivalent resources, Chinese funding will support a collaborative counterpart Chinese Consortium. The US consortium will pursue five topics; responsive application will address all five. These are:
Mercedes-Benz launches new E-Class; new engines, PHEV, driver assistance systems; DRIVE PILOT
March 09, 2016
Mercedes-Benz has launched the new tenth-generation E-Class, introduced at the North American International Auto Show (NAIAS) this January. (Earlier post.) The new generation features technology innovations in a number of areas, including driver assistance and powertrains, with new efficient engines and a plug-in hybrid version.
Initially, the E 200 d models of the new E-Class will be available with an all-new four-cylinder OM 654 diesel engine (earlier post), while the E 200 will be powered by a four-cylinder gasoline engine and the E 350 d by a six-cylinder diesel.
ViriCiti, Simacan tool predicts energy usage and savings per route by driving electric
March 04, 2016
ViriCiti B.V., a provider of telematics systems for electric city buses and trucks, and Simacan B.V., a provider of real-time traffic information, are partnering to develop a new online tool that predicts the energy usage and savings per route by driving electric.
The EV Fleet Analyzer provides insights into when the deployment of electric distribution vehicles is profitable. With this tool, ViriCiti and Simacan aim to increase the use of electric vehicles.
Audi SQ7 features new V8 TDI, 48V system, electric compressor
March 03, 2016
Audi is introducing a diesel-engined S model to its Q7 model line. The newly developed 4.0-liter V8 diesel delivers 320 kW (435 hp) and 900 N·m (663.8 lb-ft), with estimated NEDC fuel consumption of 7.4 liters of fuel per 100 kilometers (31.8 mpg US), corresponding to CO2 emissions of 194 grams per kilometer (312.2 g/mi). The SQ7 accelerates from 0 to 100 km/h (62.1 mph) in 4.8 seconds; top speed is 250 km/h (155.3 mph) (governed).
Among its features are an electric compressor with a supporting 48V subsytem that augments the work of the two turbochargers. Audi engineers will present a paper on the new V8 TDI at the upcoming Vienna Motor Symposium in April.
Volkswagen AG timeline on diesel emissions scandal
As part of a response to a shareholder lawsuit in Germany alleging a violation of the company’s disclosure obligations under Germany’s capital markets law, Volkswagen AG has outlined the timeline and background events leading to the eruption of the diesel emissions scandal last fall.
The company emphasized that the material in the statement of defense submitted to the Braunschweig District Court (Landgericht Braunschweig) does not replace the independent investigation for the complete clarification of the diesel matter which is being conducted by the law firm Jones Day and is ongoing. Volkswagen said it was making the public announcement to correct the “selective and incomplete publication of documents in the media about the diesel matter and to avoid having partial excerpts of its statement of defense published in the media.”
Initial results from French NOx emissions testing of 100 diesels show high discrepancies between official and on-the-road results
February 29, 2016
Two French environmental NGOs—France Nature Environment (FNE) and Réseau Action Climat (RAC)—along with European umbrella NGO Transport & Environment (T&E), have released initial test results from the Royal Commission’s inquiry into diesel engine NOx emissions in France. The initial results from 22 vehicles from different automakers highlight the discrepancy between the emissions levels measured in official testing and those emitted by cars on the road.
French environment minister Ségolène Royal established the commission last October following the Volkswagen scandal and concerns that the rigging of emissions testing procedures might be happening at other carmaking companies. The Royal Commission is testing 100 vehicles.
New route to renewable diesel and jet from biomass-derived platform compounds
Researchers in China have developed a new route to the production of renewable diesel and jet fuel-range branched alkanes by combining the hydroxyalkylation/alkylation (HAA) of 2-methylfuran (MF)—a biomass-derived platform compound—with angelica lactone—another biomass-derived compound—and subsequent hydrodeoxygenation.
Under solvent-free conditions, the researchers obtained 81.3% yield of HAA products; after the HDO of the hydrogenated HAA products over 5 wt% Pd/C catalyst, they achieved 81.0% carbon yield of diesel or jet fuel-range alkanes. Compared to a 2-MF–levulinic acid (or ester) route proposed in their earlier work, the new 2-MF–angelica lactone route offers higher HAA reactivity.
EPA announces availability of $26M for projects to reduce diesel emissions from existing fleet
February 26, 2016
The US Environmental Protection Agency (EPA) announced the availability of $26 million in grant funding to establish clean diesel projects aimed at reducing emissions from the US’ existing fleet of diesel engines. Diesel-powered engines move approximately 90% of the nation’s freight tonnage, and today nearly all highway freight trucks, locomotives, and commercial marine vessels are powered by diesel engines.
EPA is soliciting proposals nationwide for projects that significantly reduce diesel emissions and exposure, especially from fleets operating in areas designated as having poor air quality. Priority for funding will be given to projects that engage and benefit local communities and applicants that demonstrate their ability to promote and continue efforts to reduce emissions after the project has ended.
Mercedes-Benz Trucks approves HVO renewable diesel for its medium- and heavy-duty engines; neat or blended
February 22, 2016
With immediate effect, Mercedes-Benz Trucks is granting approval for the use of Hydrotreated Vegetable Oil (HVO) renewable diesel for the in-line six-cylinder engine variants of the Mercedes-Benz OM 470, OM 471 (first generation) and OM 936 as well as the in-line four-cylinder variants of the OM 934 meeting the Euro VI emissions standard. The engines are designed as standard to make use of the new HVO fuel. The approval applies to all engine variants whatever their output category.
HVO is a renewable diesel produced from waste materials such as waste fat, used cooking oil and also oil from crop plants. The HVO raw material is sourced from controlled and certified cultivation facilities and as such does not compete with foodstuff production. A leading example is Neste’s NEXBTL.
Diesel/2-methylfuran blends show higher brake thermal efficiency, higher NOx than diesel
Researchers at Wuhan University report on the first comprehensive study of the combustion and emissions performance of blends of diesel and the renewable fuel 2-methylfuran (MF) in compression-ignition engines. Their paper is published in the journal Fuel.
Among their findings were that diesel–MF blends show higher brake thermal efficiency (BTE) than pure diesel. However, diesel–MF blends also lead to higher NOx emissions than pure diesel and the NOx emissions are increased with the increase of MF fraction.
Germany launches new study of oxymethylene ethers for optimizing clean diesel combustion
February 15, 2016
The German Federal Ministry of Food and Agriculture (BMEL) via FNR (Fachagentur Nachwachsende Rohstoffe e.V.), BMEL’s central project-coordinating agency in the area of renewable resources, is funding a 3-year study of oxymethylene ethers (OME) as clean diesel fuels with €800,000 (US$894,000).
Oxymethylene ethers (OME) are synthetic compounds of carbon, oxygen, and hydrogen (CH3O(CH2O)nCH3). Due to their high oxygen concentration, they suppress pollutant formation in combustion. As diesel fuels, they reduce the emission of carbon black and NOx. Ford is currently leading a €3.5-million (US$3.9-million) research project, co-funded with the German government, to test cars running on monooxymethylene ether (OME1) and DME. (Earlier post.)
Mercedes-Benz introducing new diesel family in E 220 d this spring; new OM 654 with 13% lower fuel consumption; diesel “indispensable”
Mercedes-Benz is introducing a new family of diesel engines, starting with the new all-aluminum four-cylinder OM 654, which will make its world premiere in the new E-Class E 220 d in spring 2016.
The modular family of engines will find broad application across the entire range of Mercedes-Benz cars and vans. There are plans for several output variants as well as longitudinal and transverse installation in vehicles with front-, rear- and all-wheel drive.
Continental urea sensors for efficient SCR NOx aftertreatment in diesels; measuring level, quality and temperature
February 05, 2016
Continental has begun production of urea sensors for the first time to support more efficient exhaust-gas aftertreatment in diesel engines. The sensor measures the level, quality, and temperature of the aqueous urea solution in the “AdBlue” tank used in conjunction with selective catalytic reduction (SCR) for NOx reduction.
The sensor-aided denitrification supports fulfillment of the legal requirements and reinforces drivers’ trust that their car emits no more than the maximum permissible level of nitrogen oxides.
IMP develops new material to remove nitrogen compounds from crude oil for more efficient desulfurization
February 03, 2016
The Mexican Oil Institute (IMP) has developed a catalyst adsorbent material that removes 80% of organic compounds from crude oil prior to hydrodesulfurization. It allows Pemex, the Mexican oil company, to generate ultra-low sulfur diesel (ULSD) more quickly and cheaply. Dr. Rodolfo Mora, head of the project, said that the research was initiated by Pemex’ need to convert its diesel from 500 parts per million (ppm) of sulfur to 15 ppm ULSD.
Its use in a preliminary process will increase the life of the catalyst for up to 30 months over current standards by avoiding high temperatures and pressures during operation in the reactor.
Volkswagen Group begins EA189 diesel engine emission fixes in Europe; 2.0L Amarok first
In December 2015, the Volkswagen Group presented specific technical measures to the German Federal Motor Transport Authority (KBA) for the EA189 engines affected by the NOx issue. (Earlier post.) As agreed, the Group began implementing the measures in Germany at the end of January for 2.0L engines.
Volkswagen is starting with the Amarok (a mid-size pickup truck produced by Volkswagen Commercial Vehicles), with the Passat to follow shortly. The installation of the new engine control software means that the Amarok now meets the limits required to comply with the EU5 emissions standard. Over the next few months, the measures will also be implemented on the engines with 1.2- and 1.6-liter displacements.
FCA updating Euro 6 calibrations to improve emission performance under real driving conditions
February 02, 2016
FCA (Fiat Chrysler), as a voluntary measure, not mandated or requested by any regulatory authorities, will be updating its Euro 6 calibrations with new data sets to improve emission performance in real driving conditions. These new calibrations will be ready starting from April 2016 and will be available on all new vehicles sold on or after that date, and will be made available to all other owners of Euro 6 FCA vehicles at no charge, as part of vehicle calibration update programs that are implemented on a regular basis. This does not constitute a recall campaign, the company said.
In addition, FCA said it intends to accelerate its ongoing programs to expand application of Active Selective Catalytic Reduction (or SCR) technology that is already used in certain FCA vehicles, to make it available on other diesel engines families starting from the second quarter of 2017, well in advance of any applicable regulatory requirements.
European Parliament to vote on proposal to veto increased diesel emissions limits
January 19, 2016
The European Parliament will vote at the next plenary session on a proposal to veto a draft decision to raise diesel car emission limits for NOx by up to 110% when the Real Driving Emissions (RDE) test procedure is introduced.
Parliament’s Environment Committee argues that MEPs should veto plans to relax the limits because this would undermine the enforcement of existing EU standards.
PSA Peugeot Citroën: tests confirm environmental performance of BlueHDi SCR technology for diesel NOx control
January 15, 2016
PSA Peugeot Citroën announced that the initial results obtained by the Peugeot 208 and Peugeot 508 in tests organized by the technical committee led by the French Ministry of Ecology, Sustainable Development and Energy comply with regulations and are aligned with homologated data.
The company said that the results confirm the effectiveness of its BlueHDi after-treatment system, in which selective catalytic reduction (SCR) technology is positioned upstream of the particulate filter to eliminate up to 90% of the nitrogen NOx released by diesel engines, bringing NOx emissions down to levels near those of gasoline engines. At the same time, diesel engines maintain their advantage of 15% lower CO2 emissions and 20% greater fuel efficiency.
California ARB rejects VW 2-liter diesel recall plan and issues Notice of Violation
January 12, 2016
The California Air Resources Board (ARB) is rejecting VW’s submitted recall plan for 2-liter diesel passenger vehicles sold in California between 2009 and 2015 which were sold with the software defeat devices. It also notified VW of violations of California air quality regulations associated with the company’s use of a defeat device in those cars.
This rejection only applies to VW’s diesel 2.0L vehicles, not 3.0L vehicles. The submission of the recall plan for 3.0L vehicles is due to ARB on 2 February 2016. ARB made public three separate official documents related to its actions: A transmittal letter signed by Executive Officer Richard W. Corey; the rejection of VW’s submitted recall plan; and the formal Notice of Violation. ARB said that VW’s recall plan fell short in a number of areas, including:
US files civil complaint against Volkswagen, Audi and Porsche for alleged Clean Air Act violations
January 04, 2016
The US Department of Justice, on behalf of the US Environmental Protection Agency, has filed a civil complaint in federal court in Detroit, Michigan against Volkswagen AG, Audi AG, Volkswagen Group of America, Inc., Volkswagen Group of America Chattanooga Operations, LLC, Porsche AG, and Porsche Cars North America, Inc. (collectively referred to as Volkswagen). The complaint alleges that nearly 600,000 diesel engine vehicles had illegal defeat devices installed that impair their emission control systems and cause emissions to exceed EPA’s standards, resulting in harmful air pollution. (Earlier post.)
The complaint further alleges that Volkswagen violated the Clean Air Act by selling, introducing into commerce, or importing into the United States motor vehicles that are designed differently from what Volkswagen had stated in applications for certification to EPA and the California Air Resources Board (CARB).
Fulcrum BioEnergy files LCFS application for municipal solid waste to FT diesel pathway with low CI of 37.47 g/MJ
January 03, 2016
Fulcrum BioEnergy, the parent company of Fulcrum Sierra BioFuels, has applied for a new fuel pathway under the California Low Carbon Fuel Standard (LCSF) for its process of converting municipal solid waste (MSW) into Fischer-Tropsch (“FT”) diesel fuel.
The California LCFS mandates a 10% reduction by 2020 in the carbon intensity (CI) of transportation fuels. The program requires that transportation fuels used in California meet a baseline target for carbon intensity which is reduced each year. For 2016, the target for diesel and diesel substitutes is 99.97 gCO2e/MJ (Earlier post.) Fulcrum is requesting a CI of 37.47 g/MJ for its MSW-to-FT diesel.
Dalian team proposes jet controlled compression ignition to control PCCI phasing in a hybrid pneumatic engine
December 30, 2015
Researchers at the Dalian University of Technology have proposed a novel method to control premixed charge compression ignition (PCCI) phasing in internal combustion engines in all load operations. High-pressure air jet controlled compression ignition (JCCI) is based on a compound thermodynamic cycle and is implemented in a hybrid pneumatic engine (HPE) as proposed by Schechter in 1999.
The application of HPE is also beneficial to the fuel consumption and emissions because of its several flexible operation modes. A paper on the use of JCCI is published in the ACS journal Energy & Fuels.
EPS advancing diesel engine for general aviation applications; 30-50% lower fuel consumption than gasoline
December 19, 2015
Engineered Propulsion Systems (EPS) has developed and is advancing a 4.3-liter, 8-cylinder diesel engine for general aviation (GA) applications. Based on a CGI (compacted graphite iron) cylinder block, the Graflight V-8 (formerly called the Vision 350, earlier post) will enable 30-50% lower fuel consumption and emissions compared to conventional aero engines, according to the company.
As an example, EPS suggests that a Cirrus SR22 (a single-engine four- or five-seat composite aircraft) fitted with the Graflight V-8 could carry the equivalent of two additional passengers flying the same distance as with a Continental gasoline 315 horsepower engine while still realizing a 40% reduction in fuel cost. Engine and flight tests are currently underway and EPS expects Federal Aviation Authority approvals during 2017.
German KBA ratifies fixes for Volkswagen 1.2, 1.6 and 2.0L diesels; implementation begins in January
December 17, 2015
After a review, the German Federal Motor Transport Authority (KBA) has fully ratified the measures proposed by Volkswagen to address the NOx emissions issues in Europe for the 1.2-liter EA189 diesels as well as the 1.6- and 2.0-liter versions. (Earlier post.) The vehicle owners will shortly be informed about the next steps. Volkswagen will begin implementation right at the start of 2016.
The 1.2-liter and 2.0-liter engines will get a software update. Labor time will be just under half an hour. The 1.6-liter engines will also get a software update. In addition, a “flow rectifier” will be fitted in front of the air mass sensor. The labor time for implementing these measures will be less than an hour.
SwRI-led AC2AT consortium launches second year of advanced emissions research with focus on improving aftertreatment and fuel efficiency strategies
The Advanced Combustion Catalyst and Aftertreatment Technologies (AC2AT) consortium, led by Southwest Research Institute (SwRI), will focus on four research projects in its second year. (Earlier post.)
During the first year of work, the consortium made progress in its understanding of the complex nature of emissions from today’s high-performance, high-efficiency gasoline and diesel engines, said Dr. Cary Henry, a manager in SwRI’s Engine, Emissions, and Vehicle Research Division who leads the AC2AT consortium. This year’s focus will be on specific projects to improve aftertreatment and fuel efficiency strategies for these engines.
Opel to begin publishing WLTP fuel consumption numbers in Q2 2016; improving SCR for NOx reductions
December 15, 2015
Beginning in Q2 2016, and in addition to the official fuel consumption and CO2 information, Opel will start publishing fuel consumption numbers recorded under the WLTP cycle, starting with the new Astra.
In addition, Opel’s diesel engineers have recently started working on an initiative to implement NOx emission improvements on SCR (Selective Catalytic Reduction) diesel applications. This is a voluntary and early improvement towards the RDE (Real Driving Emissions) legislation that goes into effect in Europe in 2017. Opel said it is committed to providing the testing authorities transparency.
Volkswagen AG provides details on investigations into NOx cheating; origin and fixes; new strategic direction
December 10, 2015
At a press conference in Germany today, Volkswagen Group executives provided details on the status of its investigation—which is being coordinated by a special committee of the Supervisory Board—into the diesel emissions debacle. (Earlier post.)
Approximately 450 internal and external experts are involved in the investigations, which are being conducted in two phases. An internal review, being conducted by a task force of experts from various Group companies with a clearly defined mandate and a deadline, is focused on the mandate to Group Audit by the Supervisory Board and the Management Board to investigate relevant processes, reporting and monitoring systems, and the associated infrastructure.
euglena planning commercial production of biojet and renewable diesel from algae in Japan
December 02, 2015
Japan-based euglena Co. plans to produce and supply biojet and renewable diesel in Japan at commercial scale in the 2020s with support from the City of Yokohama, Chiyoda Corporation, Itochu Enex Co., Isuzu Motors and All Nippon Airways (ANA). The company will build Japan’s first demonstration plant for the production of biojet/biodiesel fuels in Yokohama, with operations planned to begin in 2018.
The company has been investigating the production of biojet from the microalgae Euglena since May 2010 (earlier post) and has also partnered with Isuzu in research on next-generation (i.e. drop-in hydrocarbon) renewable diesel production from Euglena since June 2014. In June 2015, the company signed a Technology License Agreement for the ISOCONVERSION process with Chevron Lummus Global and Applied Research Associates (ARA). (Earlier post.)
ICCT-led test of 73 Euro 6 diesels finds large difference in NOx results under NEDC and more realistic WLTC
A team from the International Council on Clean Transportation (ICCT) with colleagues from the US, China and Germany tested 73 Euro 6 diesel passenger cars on a chassis dynamometer over both the European type-approval cycle (NEDC, cold engine start) and the more realistic Worldwide harmonized light-duty test cycle (WLTC version 2.0, hot start) between 2012 and 2015. The cars featured three different types of NOx control technologies (8 EGR only, 40 LNT, and 25 SCR).
In a paper published in the ACS journal Environmental Science & Technology, they reported that while most vehicles met the Euro 6 legislative limit of 0.08 g/km of NOx over NEDC, the average emission factors rose significantly over WLTC. The findings, the team said, illustrate how diesel NOx emissions are not properly controlled under the current, NEDC-based homologation framework.
New Audi R18 makes its debut; fundamental redesign of diesel hybrid racer with Li-ion battery storage
November 29, 2015
The new Audi R18 made its world premiere on the occasion of the Audi Sport Finale at the Audi Training Center Munich on Saturday. Audi Sport has fundamentally re-designed the Audi R18 for the 2016 season.
The LMP1 race car that will compete in the Le Mans 24 Hours and in the FIA World Endurance Championship (WEC) in 2016 features innovative aerodynamics; represents the next stage in lightweight design; and has a modified hybrid system with lithium-ion batteries for energy storage, plus an efficiency-optimized TDI engine. The 2015 R18 e-tron quattro racer featured an encapsulated WHP flywheel energy storage system that sat in the cockpit alongside the driver. (Earlier post.)
VW’s relatively simple technical fixes for cheating 1.6 and 2.0L diesels accepted by KBA; 1.2L fix coming by end of month
November 25, 2015
The Volkswagen Group has proposed the specific technical fixes for the non-compliant 1.6-liter and 2.0-liter diesel EA 189 engines equipped with the software defeat device resulting in excessive NOxemissions to the German Federal Motor Transport Authority (Kraftfahrtbundesamt, KBA). Following an examination, these measures have been ratified by the KBA. (The remedies announced by Volkswagen AG apply only to affected TDI vehicles in Europe, and not to affected TDI vehicles in the United States and Canada.)
For the 1.6-liter diesel, a “flow transformer” will be fitted directly in front of the air mass sensor. This mesh will calm the swirled air flow in front of the air mass sensor and thus improving the measuring accuracy of the air mass sensor. The air mass sensor determines the current air mass throughput—a very important parameter for the engine management for an optimum combustion process.
DUH charges that Renault Espace diesel emits 13-25 times Euro 6 NOx limit; Renault disputes
The 1.6-liter Renault Espace diesel is the latest vehicle to come in the emissions crosshairs of German environmental NGO Deutsche Umwelthilfe (DUH). DUH published results of emissions testing by the University of Bern showing that NOx emissions from New European Driving Cycle (NEDC) driven tests with a warm engine exceed the applicable limit for Euro 6 vehicles 13- to 25-fold.
Renault immediately issued a statement disputing the Umwelthilfe findings, and asserted that Espace complies with applicable regulations, just as do all Renault vehicles.
Audi to revise auxiliary emission control devices for US V6 TDI 3L diesel, resubmit to EPA and ARB; mid-double-digit million euro cost
November 23, 2015
Audi will revise, document in detail, and resubmit for US approval certain parameters of the engine-management software used in the US version of the V6 TDI 3 liter diesel engine.
The action plan is the result of the discussions held between a delegation from Audi AG and the US Environmental Protection Agency (EPA) and the California Air Resources Board (CARB) in response to the 2 November EPA notice of violation (NOV) in which Audi was informed that AECDs (Auxiliary Emission Control Devices) were not sufficiently described and declared in the application for US type approval. That will now be done with the updated software and the documentation. (Earlier post.)
KIT researchers developing low-pressure carbonitriding process for hardening steel with methylamine; applications in downsized engines
A team at the Karlsruhe Institute of Technology (KIT) is developing a new low-pressure process for hardening steel using methylamine. The new low-pressure carbonitriding (enriching low-alloy steels with carbon and nitrogen) process saves time and process gas. Steels hardened in this way are suited for use in components subjected to high mechanical and thermal loads in downsized, energy-efficient and low-emission engines of the future.
The KIT researchers, along with their colleagues at Bosch, presented the process in a recent paper published in HTM - Journal of Heat Treatment and Materials.
Volkswagen submits recall plan for 2-liter diesel cars to California Air Resources Board; ARB to respond
November 21, 2015
The Volkswagen Group of America (VW) submitted a recall plan to the California Air Resources Board (ARB) on Friday, responding to the violations described in ARB’s 18 September 2015 letter to VW concerning illegal defeat devices in 2-liter diesel-powered vehicles, model years 2009-2015. (Earlier post.)
The submission of the plan triggers a review by ARB of up to 20 business days of all elements of the plan. Based on ARB’s review, VW may be required to revise and resubmit all, or specific elements of the recall plan. ARB will also consult with US EPA during this process to develop a national recall plan.
Propel Fuels reports strong consumer adoption of renewable diesel in SoCal; retail sales up 300% over biodiesel
November 18, 2015
Propel launched Diesel HPR across Southern California in August 2015, and consumer adoption of the fuel has risen 300% compared to its former biodiesel product (B20). (Earlier post.) Utilizing Neste’s NEXBTL renewable diesel, Propel’s Diesel HPR is a low-carbon, drop-in renewable fuel that meets the ASTM D-976 petroleum diesel specifications for use in diesel engines, while offering drivers better performance and lower emissions.
Performance features include a 75 cetane rating, 40 percent higher than regular diesel. Diesel HPR provides cleaner and more efficient combustion for more power and a smoother ride at a cost similar to or lower than petroleum diesel.
Audi highlights its range of electrification efforts; Q7 diesel PHEV, A7 fuel cell PHEV, BEV, 48V and more; 750 Wh/l by 2025
November 17, 2015
Audi presented a range of its ongoing work on electromobility and efficiency—from fuels and systems to full vehicles—under the “Future Performance Days 2015” banner.
On the full vehicle side, Audi put forward the Audi Q7 e-tron 3.0 TDI quattro plug-in hybrid (earlier post); the Audi A7 h-tron quattro fuel cell vehicle (earlier post); the Audi e-tron quattro concept battery-electric SUV (earlier post); the Audi TT clubsport turbo concept (earlier post); the Audi RS 5 TDI competition concept (earlier post); and the Audi R18 e-tron quattro (earlier post). On the systems and fuels side, Audi discussed battery technology; wireless charging; 48 V electrification (earlier post); Audi fuel cell technology; and Audi e-fuels (earlier post).
Chevy Colorado diesel pickup EPA-rated at up to 31 mpg highway
November 12, 2015
The 2016 Chevrolet Colorado two-wheel drive with the Duramax turbo-diesel (earlier post) will be the most fuel efficient pickup in the US, offering an Environmental Protection Agency-estimated 31 mpg (7.58 l/100 km) highway fuel economy. The EPA-estimated highway fuel economy for 2016 Colorado four-wheel drive diesel is 29 mpg.
The EPA has issued a Certificate of Conformity for the Chevrolet Colorado Duramax diesel. The agency expressed no issues or concerns following its recent extensive testing and evaluation of the emission control system on the Colorado Duramax diesel.
EIA: More than 1 billion gallons of renewable drop-in diesel/jet produced worldwide in 2014
November 09, 2015
More than one billion gallons of hydroprocessed esters and fatty acids (HEFA) fuels—renewable, drop-in diesel and jet fuels such as Neste’s NEXBTL—were produced worldwide in 2014, according to the US Energy Information Administration (EIA).
HEFA fuels are hydrocarbons rather than alcohols or esters and are the most common drop-in biofuels; they can be used in diesel engines without the need for blending with petroleum diesel fuel. Currently, HEFA fuels are also approved by ASTM International for use in jet engines at up to a 50% blend rate with petroleum jet fuel.
EPA issues a second notice of violation to Volkswagen alleging emissions cheating in MY 2014-2016 3.0L diesels (Updated with VW response)
November 02, 2015
EPA issued a second notice of violation (NOV) of the Clean Air Act (CAA) to Volkswagen AG, Audi AG and Volkswagen Group of America, Inc., alleging emissions cheating. This NOV is also being issued to Porsche AG and Porsche Cars North America. In response, VW AG in Germany issued a statement asserting that “no software has been installed in the 3-liter V6 diesel power units to alter emissions characteristics in a forbidden manner.” Volkswagen said it will cooperate fully with the EPA to “clarify this matter in its entirety.”
The NOV alleges that the VW Group companies developed and installed a software defeat device—specifically, code in the electronic control module (ECM)—in certain VW, Audi and Porsche light duty diesel vehicles equipped with 6-cylinder, 3.0-liter engines for model years (MY) 2014 through 2016 that results in increased NOx emissions of up to nine times EPA’s standard. The vehicles covered by the new NOV are the diesel versions of the 2014 VW Touareg, the 2015 Porsche Cayenne, and the 2016 Audi A6 Quattro, A7 Quattro, A8, A8L, and Q5.
Westport to begin delivering HPDI 2.0 early production-design-intent components to OEMs in Q1 2016
Westport Innovations Inc. announced that early production-design-intent components in the Westport High Pressure Direct Injection (Westport HPDI) second-generation (HPDI 2.0) development program for dual-fuel diesel/natural gas engines (earlier post), including the latest-generation injector from Delphi, are undergoing engine testing at Westport, and will be delivered to OEM customers for validation and vehicle testing early in the first quarter of 2016.
Since the announcement of the HPDI 2.0 system in September 2014, Westport has worked with its development partners and suppliers to complete component testing and system validation. The latest generation of HPDI injectors, developed under a Joint Development Agreement with Delphi (earlier post), feature a new direct-connected architecture and incorporate technologies from both companies and higher performance, lower cost and much easier packaging on the engine than prior HPDI injection system.
DUH charges Zafira diesel emits up to 17x more NOx than permitted under certain conditions; Opel rebuts with its own testing
October 23, 2015
German environmental NGO Deutsche Umwelthilfe (DUH) (earlier post) has charged that an Opel Zafira 1.6 CDTi diesel (Euro 6b) emits up to 17 times more NOx under certain driving situations than permitted by the Euro 6 limit value. Dynamometer testing for DUH was conducted at the Bern University of Applied Sciences (Berner Fachhochschule).
In three tests under the NEDC cycle with rotating rear wheels, the Zafira emitted between 2 to 4 times more NOx than allowed, according to the test report released by DUH. In three additional tests under normal test conditions—and thus with non-rotating rear wheels—however, the NOx values were below the legal value limit of 80 mg/km in each case.
Volkswagen confirms EA288 diesel engines designed for EU5 and EU6 not affected by defeat device software
Volkswagen confirmed on Thursday that no software constituting an improper emissions control defeat device as defined in law is installed in vehicles with EA 288 EU5- or EU6-engines in the European Union. Consequently, new vehicles of the Volkswagen Group offered within the European Union with those engines comply with legal requirements and environmental standards.
Volkswagen Group had earlier confirmed that new EU6-compliant vehicles offered within the European Union fulfill all legal requirements and environmental standards. (Earlier post.)
SG Preston and IHI E&C partner on portfolio of renewable diesel and jet plants; 5 initial sites, 600M gallons total capacity
October 22, 2015
SG Preston, a Philadelphia-based bioenergy company, is partnering with IHI E&C, a Houston-based engineering, procurement and construction (EPC) subsidiary of Japan’s IHI Corporation, to develop and to construct a series of commercial-scale renewable diesel and jet fuel manufacturing plants, initially in the US Midwest and Canada.
The plants will use licensed, proven, commercial-scale technologies for the production of renewable diesel and jet fuel targeting US and global industries seeking a volume-based, competitively priced solution to their environmental sustainability mandates. SG Preston will deploy its biofuels strategy initially at five plants (South Point and Van Wert, Ohio; Logansport, Indiana; and two additional, to-be-announced sites, one in Michigan, and one in Ontario, Canada), each with an initial capacity to produce 120 million gallons of renewable diesel and jet fuel annually.
SwRI to launch 7th clean diesel engine consortium
October 20, 2015
Southwest Research Institute (SwRI) is launching Clean High-Efficiency Diesel Engine VII (CHEDE-VII), the seventh phase of the industry’s longest-running diesel research consortium. The kick-off meeting for the four-year, multi-client cooperative research program, which is open to potential new members, will be 5 November at SwRI headquarters in San Antonio.
Consortium members will select research topics related to low-emission, high-efficiency diesel engine technology. Building on more than 24 years of experience, CHEDE-VII will develop pre-competitive diesel engine technology initiatives to address the needs of industry five to 10 years into the future.
New efficient hybrid optimization control method for diesel engine emissions and performance
October 19, 2015
Researchers at Iowa State have developed a new hybrid optimization control method to improve diesel engine emissions and performance. As reported in a paper in the International Journal of Engine Research, the hybrid method, which combines both particle swarm optimization (PSO) and genetic algorithm (GA) methods was able to locate a narrow window of operation which showed 27% lower NOx emissions and 60% lower particulate matter emissions than a standard PSO method.
The hybrid method was also able to locate the improvements using similar dynamometer time, indicating that the hybrid method is more efficient and more effective, the researchers said.
Sandia CRF team provides experimental confirmation of oxidation scheme of lower emissions diesel alternative DME; new intermediates
October 17, 2015
An international team of researchers led by a group from the Combustion Research Facility (CRF) at Sandia National Laboratories recently provided experimental confirmation of the generally accepted low-temperature oxidation scheme of dimethyl ether (DME)—a lower soot and emissions alternative to diesel—at low temperatures (~540 K, 267˚C). Their paper was published in the ACS Journal of Physical Chemistry A.
Especially significant, they said, was detecting and identifying keto-hydroperoxide (hydroperoxymethylformate, HPMF, HOOCH2OCHO)—a previously undiscovered partially oxidized intermediate—thereby providing critical information needed to improve models.
Volkswagen: reorienting diesel strategy, new Modular Electric Toolkit, MQB push on PHEVs, electric Phaeton
October 13, 2015
The newly-formed Volkswagen Brand Board of Management has made a number of major strategic product decisions, including a reorientation of the diesel strategy to use the most advanced emission aftertreatment technologies; the development of a standardized electric architecture (Modular Electric Toolkit, MEB) for passenger cars and light commercial vehicles; and an electric next-generation Phaeton.
Further, Volkswagen will accelerate its efficiency program and cut spending by some €1 billion per year.
CPT and Eminox to collaborate on development of retrofit electric supercharging and aftertreatment solutions for heavy-duty vehicles
October 08, 2015
Controlled Power Technologies (CPT), a British developer of advanced automotive technology focused on the electrification of internal combustion engines, and Eminox, also based in the UK and a leading European manufacturer of exhaust gas control systems for heavy duty diesel vehicles, will collaborate to bring their technologies for reduced fuel consumption and emissions to the heavy duty vehicle retrofit market.
By combining CPT’s Cobra electric supercharger with Eminox’s SCRT technology, which itself combines CRT (continuously regenerating trap) and SCR (selective catalytic reduction) technology to reduce emissions of vehicles already in service, the companies plan to demonstrate a solution that can achieve Euro VI emissions standards and fuel economy improvements.
Volkswagen of America temporarily withdraws application for US certification of MY 2016 vehicles; AECDs
October 07, 2015
In his prepared testimony for the House Committee on Energy and Commerce Subcommittee on Oversight and Investigations hearing tomorrow (earlier post), Michael Horn, President and CEO of Volkswagen Group of America, says that in discussions with EPA and the California ARB, Volkswagen said that its emissions control strategy also included a software feature that should be disclosed to and approved by the agencies as an auxiliary emissions control device (“AECD”) in connection with the certification process.
AECDs are allowed by the EPA, but they must be disclosed. As a result, Horn says, Volkswagen has withdrawn the application for certification of its model year 2016 vehicles. The company is working with the agencies to continue the certification process, he adds.
ARB posts discussion draft of new proposed mobile-source emissions reduction strategy through 2030; Advanced Clean Cars 2 regulation
October 02, 2015
The California Air Resources Board (ARB) staff has published a discussion draft of a proposed strategy for further regulation and reduction of mobile source—cars, trucks, and off-road equipment—emissions. The approach described is designed to meet simultaneously federal air quality standards; achieve greenhouse gas emission reduction targets; reduce petroleum consumption; and decrease health risk from transportation sources through 2030.
ARB staff developed this strategy using a multi-pollutant scenario planning tool (Vision 2.0) that quantifies changes in ozone and PM2.5 precursor emissions; GHG emissions; petroleum usage; and diesel toxics emissions as various technologies become widespread in vehicle and equipment fleets.
Caltech, JPL designed megasupramolecule fuel additive reduces intensity of post-impact fuel explosions
Researchers at Caltech and JPL used statistical mechanics to design a polymeric fuel additive that can self-assemble into “megasupramolecules” (≥5000 kg/mol) at low concentration (≤0.3 weight percent) and thus can reduce the intensity of post-impact fuel explosions that occur during accidents and terrorist acts.
Furthermore, preliminary results show that the additive can provide this benefit without adversely affecting fuel performance. The work is published in the journal Science.
VW says complete investigation of emissions scandal will take several months; suspending General Meeting in November; report on solutions next week
In a statement issued following its meeting on 30 September the Executive Committee of Volkswagen AG’s Supervisory Board said that it has concluded that the completion of investigations into the emissions testing scandal will take at least several months.
For this reason, the Executive Committee will propose to the Supervisory Board that the Extraordinary General Meeting scheduled for 9 November should not be held. The Executive Committee Members all agreed that, in view of the time available and the matters to be considered, it would not be realistic to provide well-founded answers which would fulfill the shareholder’s justified expectations.
Ricardo demonstrates processes for evaluating light-duty diesel emissions under coming Real Driving Emissions (RDE) regs
October 01, 2015
Despite the continuing and significant reductions in the legislated limits of light-duty diesel vehicle NOx emissions under the European Euro 1 through 5 regulations of recent years, many studies have demonstrated that real-world NOx emissions appear not to have been reduced as significantly. The Volkswagen emissions scandal has certainly spotlighted this issue, but more by the intentionality of the cause rather than by the effect.
This divergence between type-approval limits and real world emissions was one of the primary drivers for the proposed introduction of Real Driving Emissions (RDE) (earlier post)—put forward in the European Commission’s CARS 2020 Action Plan (earlier post)—in European Euro 6c legislation as early as 2017. The objective of this proposed regulation is that future vehicles certified to a given type approval threshold for NOx output will, subject an incremental Conformity Factor to be defined in the regulation, not exceed this level in normal on-road driving conditions.
Volkswagen Group reorganizes North American operations; Prof. Dr. Winfried Vahland new region CEO
September 29, 2015
As part of its restructuring, Volkswagen Group is combining its activities in the US, Mexico and Canada into the newly formed North American Region (NAR). The Supervisory Board has appointed Prof. Dr. Winfried Vahland, since 2010 the CEO of Group company ŠKODA, to take over all responsibility for the North American Region. In this new role as President and CEO of Volkswagen NAR, Prof. Dr. Vahland will be responsible for all Group activities in the newly formed region from 1 November 2015. Michael Horn remains as President and CEO of Volkswagen Group of America, and will report to Dr. Vahland.
Volkswagen said that the creation of NAR is a further measure in the process of decentralizing managerial responsibility, and creates another pillar in the global structure of the group, in addition to the European and Chinese regions.
Volkswagen AG to refit diesel vehicles with EA 189 EU5 engines; solution to be presented by end of October
Volkswagen AG announced that it will retrofit the some 11 million vehicles equipped with the 2.0-liter EA 189 Euro 5 diesel tainted by the software emissions defeat device. (Earlier post.) New vehicles with EU6 engines currently available are not affected by the cheat, Volkswagen said.
The scope of the retrofit is not yet clear—e.g., software only, or software and new hardware—but Volkswagen and the other Group brands whose vehicles are affected will present the technical solutions and measures to the responsible authorities in October.
Norwegian/Finnish studies find Euro 6 cars exceeding NOx and CO2 type limits in real-world conditions; below on PM
Emission measurements conducted by Institute of Transport Economics in Norway, in collaboration with VTT in Finland, show that new Euro 6 cars with diesel engines are struggling with NOx emissions well in excess of regulatory type limits when in real traffic.
Since 2011, TØI and VTT have conducted emission measurements of 12 heavy vehicles with Euro VI engines, and seven Euro 6 diesel cars. In addition, they measured emissions from several gasoline vehicles (Euro 5 and 6) and Euro 5 diesel vehicles. All vehicles were tested in laboratory under conditions that as far as possible should correspond to the actual use of the vehicles.
Lux: VW “actually in a strong position to innovate their way out of this mess”
September 28, 2015
Reflecting on the implications of the still evolving Volkswagen emissions testing scandal (“a vehicle emissions scandal of unprecedented proportions”), analysts at Lux Research suggest that one outcome of the crisis could be an aggressive push by Volkswagen to accelerate the push towards plug-in hybrids and electric vehicles.
VW was slowly moving beyond conventional gasoline and diesel engines anyway, Lux noted, with plans of putting out 20 more plug-in vehicles by 2020 (earlier post)—such as the production version of the Audi e-tron quattro. (Earlier post.) Volkswagen has also invested in next-generation batteries, including lithium-sulfur and solid-state. (Earlier post.)
Study uncovers role of longer-chain unburned hydrocarbon emissions from diesels in London air pollution; calls for regulatory shift
September 27, 2015
Researchers at the University of York (UK) have found that longer-chain unburned hydrocarbons released from diesel—which are not currently explicitly considered as part of air quality control strategies—represent only 20–30% of the total atmospheric hydrocarbon mixing ratio but contribute more than 50% of the total atmospheric hydrocarbon mass and are a dominant local source of secondary organic aerosols (SOA) in London—and by extension to other developed megacities.
The study found that 60% of the winter primary hydrocarbon hydroxyl radical reactivity in London is from those diesel-related hydrocarbons; the authors predicted that the longer-chain HCs contribute up to 50 % of the ozone production potential in London. The results, they said in an open access paper published in the journal Atmospheric Chemistry and Physics, suggest the need for a shift in policy focus onto gas-phase hydrocarbons released from diesels as this vehicle type continues to displace gasoline world-wide.
VW: ~5M VW vehicles affected by emissions scandal; working on technical solution; suspension of some employees starting
September 25, 2015
Volkswagen said that an internal assessment following the revelation of cheating on emissions testing in EA 189 2.0L diesels (earlier post) has concluded that approximately five million Volkswagen Passenger Cars brand vehicles are affected worldwide. In the heat of the initial discovery of the emissions testing cheating, Volkswagen had said that up to 11 million vehicles worldwide could be affected. (Earlier post.)
Certain models and model years of these vehicles (such as the sixth generation Volkswagen Golf, the seventh generation Volkswagen Passat and the first generation Volkswagen Tiguan) are equipped exclusively with type EA 189 diesel engines. Also as previously announced, all new Volkswagen Passenger Car brand vehicles that fulfill the EU6 norm valid throughout Europe are not affected. This therefore also includes the current Golf, Passat and Touran models.
California ARB to begin enhanced testing of modern light-duty diesel engines to detect emissions cheating (updated)
The California Air Resources Board sent a letter to automobile manufacturers notifying them that ARB will begin using enhanced testing procedures for modern light-duty diesel vehicles to determine compliance with emission levels to which they were originally certified.
ARB developed its enhanced screening techniques as it dug into the anomalous emission results from Volkswagen’s 2.0L diesel engine; Volkswagen subsequently admitted its use of the software defeat device on emissions testing, triggering that emission control scandal that erupted exactly one week ago. (Earlier post.)
BMW: “We don’t cheat”; diesel is needed to hit CO2 targets; call for WLTP and RDE
As the Volkswagen emission testing scandal threatens to spill over onto other automakers, BMW yesterday issued a sharp statement in response to a report in Auto Bild suggesting emissions from an X3 test were out of the norm.
“The BMW Group does not manipulate or rig any emissions tests. We observe the legal requirements in each country and fulfill all local testing requirements. In other words, our exhaust treatment systems are active whether rolling on the test bench or driving on the road. Clear, binding specifications and processes are in place through all phases of development at the BMW Group in order to avoid wrongdoing.”
Testing shows UPM BioVerno renewable diesel reduces harmful tailpipe emissions
September 24, 2015
Testing, which is still ongoing, is showing that Finnish wood-based UPM BioVerno diesel (earlier post) significantly reduces harmful tailpipe emissions. A number of engine and vehicle tests have been carried out across a number of research institutes such as VTT Technical Research Center of Finland Lt;, University of Vaasa in Finland; and at FEV.
UPM BioVerno renewable diesel has already been shown to function just like conventional diesel in all diesel engines, while generating up to 80% fewer greenhouse gas emissions during its lifecycle compared to conventional fossil diesel fuels. The latest test results show that UPM BioVerno also reduces harmful tailpipe emissions.
VW CEO Winterkorn resigns over crisis; “further personnel consequences” coming; Exec. Committee filing criminal complaint
September 23, 2015
Volkswagen Group CEO Prof. Dr. Martin Winterkorn resigned today, taking upon himself responsibility for the emissions cheating scandal that has quickly engulfed the company. In a statement, the Executive Committee of Volkswagen AG’s Supervisory Board noted that Dr. Winterkorn had no knowledge of the manipulation of emissions data, and thanked Dr. Winterkorn “for towering contributions in the past decades and for his willingness to take responsibility in this critical phase for the company. This attitude is illustrious.”
The Executive Committee also said it was adamant on taking the necessary steps to ensure a new beginning for the tarnished company. As part of that, it is expecting “further personnel consequences” in the coming days. The company is also voluntarily submitting a complaint to the State Prosecutors’ office in Brunswick. The Executive Committee believes that criminal proceedings may be relevant due to the irregularities. Volkswagen will support the investigations of the State Prosecutor “in all forms.”
Volkswagen: new EU 6 diesels clear of software cheat, but up to 11M EA189 diesels worldwide affected
September 22, 2015
In a statement issued this morning, Volkswagen AG said that new vehicles from the Volkswagen Group with EU 6 diesel engines currently available in the European Union comply with legal requirements and environmental standards. The engine control software in those vehicles does not affect handling, consumption or emissions, the company said.
Although the engine management software that enabled the cheating on NOx targets (earlier post) is installed in other Volkswagen Group vehicles with diesel engines, the company added, for the majority of those engines the software does not have any effect. However, the software “discrepancies” do relate to vehicles with the Type EA189 2.0-liter diesel engines—involving some eleven million vehicles worldwide. (Earlier post.)
Toyota Land Cruiser in Europe offers new 2.8L diesel; first Toyota SCR NOx aftertreatment system
|New D-4D diesel. Click to enlarge.|
Toyota’s Land Cruiser off-road 4WD vehicle in Europe is now available with a new 2.8 liter D-4D turbo-diesel. The engine replaces the current 3.0-liter engine, with a focus on improved driveability with better torque delivery, plus lower fuel consumption and reduced CO2 emissions. It delivers 130 kW/177 DIN hp @ 3400 rpm and can be mated to a 6-speed manual gearbox or a new 6-speed automatic transmission.
Available on 3-door and 5-door models, Toyota’s newly developed 2.8 D-4D Global Diesel (GD) engine combines an 11% increase in low speed torque and a 7% increase in maximum torque with a 9% reduction in average fuel consumption. The engine features Toyota’s first urea Selective Catalytic Reduction (SCR) system that can eliminate up to 99% of NOx emissions.
Study links California regulations, significant declines in cancer risk from exposure to air toxics
A study by a team from the California Air Resources Board (ARB) has found that the collective cancer risk from exposure to seven toxic air contaminant (TACs) has declined 76% during the period from 1990 to 2012, and linked that result from air quality regulations targeting these TACs. The study appears in the ACS journal Environmental Science & Technology.
Of the seven TACs, diesel particulate matter (DPM) is the most important; DPM is emitted mainly from trucks and buses and is responsible for most of the airborne cancer risk in California, according to ARB. However, in the study DPM is not measured directly. Based on a novel surrogate method, DPM concentrations declined 68% during the period, even though the state’s population increased 31%; diesel vehicle-miles-traveled increased 81%; and the gross state product (GSP) increased 74%.
Background on the 2.0L diesel engines at the core of the Volkswagen emissions testing debacle
September 21, 2015
Last Friday, the US Environmental Protection Agency (EPA) and California Air Resources Board (ARB) charged that Volkswagen (Jetta, Beetle, Golf, Passat) and Audi (A3) passenger cars equipped with 2.0-liter diesels in the US have used a software defeat device to cheat on the results of NOx testing, and thus have violated the US Clean Air Act. According to the charges, the software, when it detected regulatory testing on a dyno, ran a different, more emissions-stringent engine calibration to meet test requirements than when it detected regular use. (Earlier post.) As a result, real-world NOx emissions increased by a factor of 10 to 40 times above the EPA compliant levels, depending on the drive cycle.
According to the charges, Volkswagen admitted to the software device. Both agencies have launched investigations; Volkswagen—which in addition to recall costs for the approximately 500,000 vehicles affected faces civil penalties and injunctive relief—says that it will fully cooperate and has launched its own external investigation; eager lawyers are ramping up for class action suits against the automaker; Volkswagen AG lost almost one-fifth of its market value on Monday; and some Volkswagen suppliers are also feeling a crunch.
Volkswagen Group orders external investigation of emissions testing violations, pledges full support to EPA and ARB
September 20, 2015
On Friday, the US Environmental Protection Agency (EPA) and California Air Resources Board (ARB) charged that, based on ARB testing, Volkswagen and Audi passenger cars equipped with 2.0L diesels have used a software defeat device to cheat on the results of NOx testing, and thus have violated the US Clean Air Act. (Earlier post.)
On Sunday, Volkswagen Group CEO Prof. Dr. Martin Winterkorn said that Volkswagen does “not and will not tolerate violations of any kind of our internal rules or of the law”, and said that the company “will cooperate fully with the responsible agencies, with transparency and urgency, to clearly, openly, and completely establish all of the facts of this case.” Volkswagen has ordered an external investigation as well.
EPA and California ARB charge Volkswagen with using software defeat device to circumvent NOx testing in 4-cylinder 2.0L diesels
September 18, 2015
EPA has issued a notice of violation (NOV) of the Clean Air Act (CAA) to Volkswagen AG, Audi AG, and Volkswagen Group of America, Inc. (collectively referred to here as Volkswagen). The NOV alleges that Volkswagen and Audi cars from model years 2009-2015 equipped with 2.0-liter, four-cylinder diesels include software (a “defeat device”) that circumvents EPA emissions standards for NOx. California is separately issuing an In-Use Compliance letter to Volkswagen, and EPA and the California Air Resources Board (ARB) have both initiated investigations based on Volkswagen’s alleged actions.
In response, Volkswagen said that it is cooperating with the investigation, and is unable to comment further at this time. VW may be liable for civil penalties and injunctive relief for the violations alleged in the NOV. The allegations cover roughly 482,000 diesel passenger cars sold in the United States since 2008. Affected diesel models include:
National Academies release third review of the 21st Century Truck Partnership
September 14, 2015
The National Academies have released a third review of the 21st Century Truck Partnership (21CTP); the review follows the Phase 1 and Phase 2 reviews by the National Research Council in 2008 and 2012 (earlier post) and assesses the progress the partnership has made. The report highlights goals that have been achieved and identifies remaining issues that the partnership should continue to address.
The 21st Century Truck Partnership is a cooperative research and development (R&D) partnership comprising four federal agencies and 15 industrial partners. The Partnership aims to “accelerate the introduction of advanced truck and bus technologies that use less fuel, have greater fuel diversity, operate more safely, are more reliable, meet future emissions standards, and are cost effective.” To do so, it supports research, development, and demonstration (RD&D) that can lead to commercially viable products and systems. Its strategic approach includes:
Ford at Frankfurt: Euro-spec Ford Edge diesels with up to 40.6 mpg; new Ranger pickup with 17% improvement in fuel efficiency
Ford will be introducing the Euro-spec version of its Edge SUV at the IAA in Frankfurt this week. The large SUV will be offered in Europe with a choice of 180PS 2.0-liter TDCi diesel engine with six-speed manual transmission, or 210 PS bi-turbo 2.0‑liter TDCi diesel with six-speed PowerShift automatic transmission. Ford said both powertrains will deliver up to 40.6 mpg US (5.8 l/100 km) fuel efficiency and 149g/km CO2 supported by Auto-Start-Stop technology.
The upscale Edge will join the Ford Kuga medium-sized SUV and EcoSport compact SUV to meet the demands of growing numbers of SUV customers in Europe. Ford expects to sell 200,000 SUVs in Europe in 2016—a 200% increase compared to 2013. (Earlier post.)
Ford Europe leading project investigating DME and OME1 as low carbon, near zero particulate fuels; power-to-liquids pathways using CO2
September 12, 2015
Ford Motor Company is leading a €3.5-million (US$3.9-million) research project to investigate the use of alternative fuels that could offer customers the power and performance of modern internal combustion engines with environmental benefits comparable to an electric vehicle.
The German government is co-funding the three-year project that will test the first cars to run on dimethyl ether (DME) (earlier post), commonly used as a non-toxic propellant in aerosol spray gas, and monooxymethylene ether (OME1). (OME1 is made from methanol on a commercial scale and has a cetane number of 38; it can be mixed with additives to produce OME1a diesel fuel (CN 48).)
Ensyn receives EPA regulatory approval for its cellulosic renewable diesel RFDiesel
September 11, 2015
The US Environmental Protection Agency (EPA) recently granted Ensyn Corporation (earlier post) Part 79 registration for its renewable diesel product, RFDiesel. This registration, pursuant to Title 40 CFR Part 79 of the Clean Air Act, is required for the sale of RFDiesel in the US.
RFDiesel, a drop-in diesel transportation fuel, is created by processing Ensyn’s renewable crude (RFO), a liquid cellulosic feedstock, with customary petroleum feedstocks in conventional petroleum refineries (RFO Coprocessing). There, Ensyn’s RFO is used as a feedstock in Fluid Catalytic Crackers (FCCs). FCC units are found in most refineries worldwide and are used to produce gasoline and diesel from vacuum gas oil (VGO). When RFO is processed alongside VGO in FCC units at VGO displacement rates up to approximately 5%, RFO performs comparably to VGO on a volumetric basis producing spec gasoline and diesel.
Achates Power proposes EPA/NHTSA medium- and heavy-duty engine standard require 15% decrease in fuel consumption and emissions
September 10, 2015
Achates Power, Inc., the developer of a family of efficient compression-ignition opposed-piston two-stroke (OP2S) engines (earlier post), proposed more stringent engine fuel efficiency and emission standards for medium- and heavy-duty vehicles at a recent public hearing held by the National Highway Traffic Safety Administration (NHTSA) and Environmental Protection Agency (EPA) on “Greenhouse Gas Emissions and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles – Phase 2”.
Earlier this year, NHTSA and EPA jointly announced the proposed Phase 2 standards for medium- and heavy-duty vehicles. (Earlier post.) While these vehicles as a whole will have to curb fuel consumption and carbon dioxide emissions by up to 24% between the 2018 and 2027 model years, the agencies are proposing separate engine standards requiring only a 4% decrease.
Federal-Mogul Powertrain develops new high strength aluminium alloy material for automotive diesel pistons
September 03, 2015
Federal-Mogul Powertrain has developed a new premium diesel piston aluminium alloy: DuraForm-G91. In benchmarking tests, the new alloy—which will be on display at the IAA show later this month—provides between three and five times the component life of established as-cast materials in modern, highly loaded, diesel engines. The increased strength of the new material also supports higher mechanical loads, allowing engines to operate at higher specific power and more efficiently.
The enhanced alloy properties facilitate piston designs with a lower compression height and reduced mass. The resulting benefits of less reciprocating mass and smaller, lighter cylinder blocks contribute to vehicle CO2 emissions reduction.
DLR-led NEMESIS 2+ project develops compact direct steam reformer for diesel/biodiesel to H2
September 02, 2015
The European NEMESIS 2+ consortium has and successfully tested a pre-commercial on-site system for the production of hydrogen from diesel and biodiesel. The prototype system—the size of a shipping container—can be integrated into existing infrastructure with relative ease.
The prototype, built by the Dutch project partner HyGear, produces 4.4 kilograms of hydrogen from 20 liters of biodiesel per hour—this roughly corresponds to the fuel tank of a B-Class F-cell vehicle. The efficiency of the process, from start to finish, is approximately 70%. (Original project goals were 50 Nm3/h, or 4.5 kg/h with an efficiency >80%.) The EU NEMESIS 2+ project, which ran until June 2015, was coordinated by the German Aerospace Center (DLR).
UCL, BP team study on combustion and emissions characteristics of a range of fuel molecules from lignocellulosic biomass
September 01, 2015
A team from University College London and BP’s Fuels and Lubricants Research group has investigated the combustion and emissions characteristics of a range of fuel molecules which can be produced from lignocellulosic biomass through a variety of processing routes.
The researchers suggested that their results can be used to aid in selecting at what stage lignocellulose should be chemically modified so as to produce a viable biofuel molecule with optimal combustion characteristics and exhaust gas emissions. Their paper is published in the ACS journal Energy & Fuels.
Health Effects Institute to release Executive Summary of ACES new-technology diesel results this fall
August 21, 2015
The Health Effects Institute (HEI) it will publish an Executive Summary of the Advanced Collaborative Emissions Study (ACES) this fall. The Summary will be the synopsis and final publication from the program to characterize the emissions and assess the health effects of new-technology diesel exhaust (NTDE) from heavy-duty diesel engines that meet the 2007 and 2010 regulations enacted by the US Environmental Protection Agency (EPA). (Earlier post.) HEI is an independent, non-profit research institute funded jointly by the US Environmental Protection Agency (EPA) and the worldwide motor vehicle industry.
To meet new emissions limits, diesel-engine manufacturers developed new exhaust aftertreatment systems and the petroleum industry introduced new ultra-low-sulfur diesel fuel needed to allow the new emissions controls to work. HEI—in collaboration with the Coordinating Research Council, a nonprofit organization with extensive expertise in emissions characterization—launched ACES in response to requests to characterize the emissions and health effects of NTDE.
Propel Fuels expands retail sales of drop-in renewable diesel across Southern California; $2.59/gallon
August 13, 2015
Propel Fuels has expanded its sales of Diesel HPR (High Performance Renewable) to locations across Southern California. Utilizing Neste’s NEXBTL renewable diesel, Propel’s Diesel HPR is a low-carbon, drop-in renewable fuel that meets petroleum diesel specifications and can be used in any diesel engine.
Diesel HPR made its North American debut in March 2015 at 18 Propel stations across Northern California. (Earlier post.) In HPR’s first three months of sales, Propel has seen a 300% increase in gallons sold compared to its former biodiesel product (B20). Propel customers have also provided overwhelmingly positive feedback on the fuel, validating HPR’s performance and value to drivers, according to the company.
Jeep Cherokee in Europe gains new 2.2L MultiJet II diesel
August 12, 2015
The Jeep Cherokee in Europe is adding a new 2.2-liter MultiJet II diesel engine, available with 185 hp (138 kW) and 200 hp (149 kW) outputs, and offering a significantly wider spread of torque from low rpm, greater power, improved performance and better fuel economy than the out-going two-liter 170 hp automatic engine. The new 2.2-liter Euro 6 compliant engine, appearing on an FCA model for the first time, joins the current 2.0L diesel 140 hp manual version in the Cherokee line-up.
Both power variants are available deliver 440 N·m (325 lb-ft) of peak torque. The 200 hp variant is available on Limited specification while the 185 hp is fitted on Cherokee Longitude and Longitude+ variants only. The engines are available only with Jeep’s segment-first nine-speed automatic gearbox, and are matched to the Active-Drive four-wheel-drive systems.
UPS announces renewable diesel agreements with Neste, REG and Solazyme; up to 46M gallons over next 3 years
July 29, 2015
UPS announced agreements for up to 46 million gallons of renewable diesel over the next three years, constituting a 15-fold increase over prior contracts and making UPS one of the largest users of renewable diesel in the world.
Neste, Renewable Energy Group (REG) and Solazyme will supply renewable diesel to UPS to help facilitate the company’s shift to move more than 12% of its purchased ground fuel from conventional diesel and gasoline fuel to alternative fuels by the end of 2017. UPS has previously announced a goal of driving one billion miles with our alternative fuel and advanced technology vehicles by the end of 2017.
Chevrolet introduces Colorado Duramax Diesel midsize pickup
July 28, 2015
Chevrolet has introduced the diesel version (earlier post) of its 2016 Colorado midsize pickup truck. (Colorado is the 2015 Motor Trend Truck of the Year and Cars.com’s Best Pickup Truck of 2015.) With 369 lb-ft of torque (500 N·m) generated by the all-new 2.8L Duramax turbo-diesel, the Colorado’s maximum trailering capacity rises to 7,700 pounds (3,492 kg) on 2WD models, with estimated fuel economy projected by GM to top the already segment-leading efficiency of the gas models (27 mpg (8.7 l/100 km) highway with 2.5L gasoline engine and automatic transmission).
It is also the cleanest diesel truck engine ever produced by General Motors. The new Colorado diesel goes on sales this fall, offered in LT and Z71 Crew Cab models, with 2WD or 4WD. It is priced $3,730 more than a comparably equipped 3.6L V-6 model.
UMTRI study finds total cost of ownership of diesels in US often much less than gasoline counterparts
July 09, 2015
A comprehensive study of the total cost of ownership (TCO) of light- and medium-duty diesel passenger vehicles in the US has found that the total cost of ownership—depreciation, fuel costs, repairs, maintenance, insurance, and fees and taxes—is often much less for diesel vehicles as compared to gasoline versions of the same vehicles, mostly ranging from $2,000 to $7,000 over three to five years.
Bruce Belzowski, managing director of the U-M Transportation Research Institute's Automotive Futures group, compared thousands of gasoline and diesel versions of the same or nearly identical vehicles sold at auction in 2012-13, including Audi, BMW, Mercedes-Benz and Volkswagen passenger cars and SUVs, and Chevrolet, Ram, Ford and GMC medium-duty pickup trucks.
European automakers and fuel suppliers argue for diesel as they call on policy makers to accelerate fleet renewal
July 08, 2015
In an open letter to EU policy makers, leading representatives of the automotive and petroleum refining industry in Europe called on policy makers to help accelerate fleet renewal and the introduction of the cleanest vehicles and committed to keep pushing the technical boundaries in order to find ever better ways of combining the customer benefits of diesel—fuel economy and low CO2—with continuously reduced emissions.
The associations pointed out that political measures restricting the rollout of the new generation of diesel technology would undermine existing efforts to cut CO2 emissions.
Volkswagen 2015 Golf TDI diesel tours all lower 48 states on 101.43 gallons; 81.17 mpg
A 2015 Golf TDI Clean Diesel has set a new Guinness World Records achievement for the “lowest fuel consumption—48 US contiguous States for a non-hybrid car” with an 81.17 mpg (2.9 l/100 km) performance. Traveling 8,233.5 miles (13,251 km) around the US in 16 days on $294.98 of Shell Diesel fuel, the Golf beat the previous mark of 77.99 mpg (3.01 l/100 km) by more than 3 mpg, and also beat the hybrid vehicle record of 74.34 mpg (3.16 l/10 km) by more than 6 mpg. The 2015 Golf TDI carries an EPA-estimated highway fuel economy rating of 45 mpg (5.22 l/100 km).
The record-setting Golf TDI, sporting Volkswagen of America’s 60th anniversary emblem, as well as logos from sponsors Shell, Goodyear, LG, Garmin and Linear-Logic, departed from Volkswagen of America’s headquarters in Herndon, Va., on 22 June. It returned on 7 July, having visited all 48 contiguous states.
Honda diesel sets new Guinness record for fuel efficiency, averaging 83 mpg US in 8,387-mile drive across 24 EU countries
July 07, 2015
Honda has set a new Guinness World Records title for “Lowest fuel consumption – all 24 contiguous EU countries (all cars)”, recording an average 83 mpg US (2.82 l/100 km) over 8,387 miles (13,498 km), in a 25-day drive across all 24 EU contiguous countries. (Earlier post.) The car achieved an average 932 miles (1,500 km) on each tank of fuel, at a total fuel cost for the whole journey of just £459 (US$716).
Behind the wheel of a Honda Civic Tourer 1.6 i-DTEC for the entire journey were two members of Honda’s European Research & Development (R&D) team, Fergal McGrath and Julian Warren, who took on the challenge to further demonstrate the real-world fuel economy of the Tourer.