[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.]
Study: Combination of active and passive engine-off coasting delivers optimal fuel savings with 48V hybrid systems
April 13, 2016
A study by Germany-based automotive supplier HELLA found that the combination of active and passive engine-off coasting and recuperation using a 48V mild hybrid system shows the best potential to reduce CO2 emissions for all car segments, with the highest potential in the larger car segments, for both NEDC and WLTP (especially true for real world driving).
On the other hand, passive engine-off coasting alone showed no CO2 reduction potential for NEDC and some in WLTP according to the paper presented at the 2016 SAE World Congress.
Delphi unveils new 48V mild hybrid system; working with two OEMs toward production within 18 months
Delphi Automotive PLC unveiled a 48-volt mild-hybrid vehicle solution; the company confirmed it is working with two global automakers and could see production within 18 months.
Showcased in a Honda Civic 1.6-liter diesel vehicle at the company’s annual investor update in London, Delphi’s 48-volt, mild hybrid technology uses the 48-volt electrification to minimize the demand on the engine, improving performance while lowering CO2 emissions by more than 10%.
FEV showcasing 48V technology at 2016 SAE World Congress
April 08, 2016
FEV will showcase some of its 48-Volt technology capabilities at the 2016 SAE World Congress next week in Detroit. FEV says it believes that 48V technology will be the next evolution in in-vehicle power.
The proliferation of components and systems that require electrical power in today’s vehicle are pushing the standard 12-Volt battery to its limits. Under idle conditions and especially under low-temperature conditions, current 12V electrical systems can account for the entire power output of a conventional alternator, FEV notes.
A123 Systems opening new manufacturing facility in Czech Republic; support for increasing volume of 12V and 48V Li-ion systems
March 21, 2016
Li-ion battery manufacturer A123 Systems is expanding its operations in Europe by opening a new manufacturing facility in the Czech Republic city of Ostrava. The opening of the new facility is the result of a substantial surge in European market demand for low-voltage automotive products, a strategic focus of A123.
This European location will establish regional assembly of A123’s advanced 12V Lithium-ion starter battery and next-generation 48V battery and cost effectively support the growing market demand.
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.
Pierburg GmbH electric compressor for turbos
February 24, 2016
Pierburg GmbH, part of the KSPG Group, has developed an electric compressor for spontaneously boosting the charge pressure of engines fitted with an exhaust-gas turbocharger. This component allows pressure to be increased regardless of the exhaust-gas energy availability.
The compressor is compatible with both gasoline and diesel engines. Initial prototypes are now being tested by various customers. The electric compressor fits in well and without any constraints with the proven strategy of downsizing, the company said.
CPT invests £1M to industrialize switched-reluctance 48V mild hybrid technology; new durability test cells
February 16, 2016
UK-based Controlled Power Technologies, a developer of vehicle driveline electrification technology, has invested £1 million (US$1.4 million) to further industrialize its CO2 and NOx reduction capabilities for the global automotive and transport industries.
CPT specializes in the safe low-voltage application of switched-reluctance machines (SRMs) to a vehicle powertrain and driveline, providing intelligent electrification of the propulsion system with near full hybrid vehicle capability. (Earlier post.) The £1-million spend will support seven projects at the company’s new technical center in Coventry and at its headquarters in Laindon. A significant proportion of the funding targets product and manufacturing process maturity by capital expenditure in new durability test cells at Laindon and a low volume manufacturing facility in Coventry.
ALABC: 48V mild hybrids can meet emission targets with CO2 reductions of 15-20%
January 27, 2016
Current mild-hybrid vehicle projects, in partnership with Ford and Hyundai/Kia, that utilize advanced 48V lead-carbon batteries, can reduce CO2 emissions by 15-20%, according to the latest data from the Advanced Lead Acid Battery Consortium (ALABC), presented at the Advanced Automotive Battery Conference (25-28 January, Mainz).
The T-Hybrid (based on a Kia Optima) (earlier post) and the ADEPT (based on a Ford Focus) (earlier post) both utilize an advanced 48V lead-carbon battery system with bolt-on electrical components that allow for significant engine-downsizing without loss in performance.
Lux: micro-hybrids will provide the most economical path for automakers to meet 2025 fuel efficiency targets
January 06, 2016
While battery-electric vehicles, super-light carbon fiber composites, and hydrogen fuel cells will all be available, a new report from Lux Research has concluded that micro-hybrids will provide the most economical route—$1,700 additional average vehicle cost—to meet aggressive fuel efficiency targets in 2025: 54.5 miles per gallon (mpg) in the US and 95 g CO2/km in Europe.
The Lux report—Building the Car of 2025: How to Cost-Effectively Get to 54.5 MPG Using the Right Mix of Advanced Technologies—concluded that nearly half of the improvements required to meet the targets will come from improvements in micro-hybrid technology, notably through improved batteries, while lighter structural materials will contribute 39% and improved fuels will add 13%.
Lux: 48V microhybridization could prove to be cost-effective means of achieving 2025 CAFE targets
December 21, 2015
Lux Research has built a bottom-up model for automotive innovation for fuel economy improvements to analyze the cost-effectiveness of all the various pathways for meeting regulatory fuel consumption and emissions targets.
The roadmap to reducing fuel consumption and emissions from the automotive sector has many options—including lightweight materials, increasing electrification, autonomy, and alternative fuels—but picking the right mix of options is tricky.
ARPA-E awards U-M $1.9M to develop advanced low-cost high-efficiency engine; boosting, highly dilute combustion and 48V system
December 01, 2015
The US Department of Energy’s (DOE’s) Advanced Research Projects Agency - Energy (ARPA-E) will award approximately $1.9 million to a project to develop a high-efficiency engine system that integrates a compact micro-hybrid configuration of a supercharger with an electric waste heat recovery system and employs high rates of recirculated exhaust gases.
When combined with a sophisticated control strategy, this approach provides a solution for suboptimal engine breathing that is typical of transient engine operation. The performance is projected to match that of a naturally aspirated engine and have a 20% increase in fuel efficiency compared to a turbocharged downsized engine, at a cost that is half that of a mild-hybrid system.
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).
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.
Schaeffler preparing 48V mild hybrid Audi TT for road testing
September 30, 2015
Schaeffler has been testing and demonstrating the performance capabilities of 48 volt hybridization in a range of concept vehicles including the“Gasoline Technology Car” (GTC), co-developed with Ford and Continental and the “Schaeffler Efficient Future Mobility North America” vehicle, as launched at the 2015 Detroit Motor Show (NAIAS) (earlier post). Schaeffler is now applying 48V hybridization to an Audi TT.
The drive for the “Schaeffler System 48 V” is based around an electrified rear axle which complements the front-wheel drive internal combustion engine. An additional belt-driven starter generator is connected to the engine which also operates at 48 V. The 48 V on-board electric subsystem uses a lithium-ion battery as its energy store. It is connected via a voltage transformer to the 12 V on-board electric system which powers all the different electrical components in the vehicle, from headlights to seat adjusters.
JAC and Ricardo develop production version of HyBoost concept; seeking 30% boost in fuel economy with same performance
Anhui Jianghuai Automobile Group Co Ltd (JAC) and Ricardo are collaborating on a project to develop the Ricardo HyBoost concept (earlier post)—a combination of low-cost technologies to deliver improved performance and fuel economy which featured recently in the Ricardo Centenary celebrations —into volume production on a JAC vehicle.
The Ricardo HyBoost concept is based on a downsized, highly boosted turbocharged direct injection gasoline (TDGI) engine giving improved fuel economy at low cost, linked to a 48V electrical architecture including a belt starter generator (BSG), DC-DC converter and a lithium-ion battery for energy storage.
Jaguar Land Rover showcases MHEV, PHEV and BEV Concept_e demonstrators; electric Drive Module
September 09, 2015
At the CENEX Low Carbon Vehicle event in the UK, Jaguar Land Rover (JLR) is showcasing three Concept_e research demonstrators—a mild hybrid, plug-in hybrid, and battery-electric vehicle—including a new novel high performance, modular electric drive module (eDM) developed in-house by Jaguar Land Rover.
These are capable of producing twice the power and torque of any electric motor-generator currently in production, JLR said, and can be inserted between any engine and transmission to create MHEV or PHEV, or used alone for a BEV.
Bosch 48V mild hybrid system to be production-ready by 2017; Gen 2 prototype integrated in transmission for all-electric driving
September 04, 2015
Bosch is developing a 48V entry-level hybrid system that will be production-ready by 2017. “The boost recuperation system is the hybrid for everyone,” says Dr. Rolf Bulander, member of the board of management of Robert Bosch GmbH and chairman of the Mobility Solutions business sector.
Bosch says that the low-cost system, which enables start-stop functionality and braking energy recuperation, will deliver about a 15% improvement in fuel consumption, not only in controlled tests, but also in everyday driving situations. An electric boost feature also enables more dynamic acceleration; the motor generator provides the combustion engine with an additional 150 N·m of support during acceleration.
Aeristech launches new 48V electric supercharger
July 31, 2015
UK-based Aeristech has introduced a new 48V electric supercharger capable of continuous operation at high boost levels. Independently validated by Ricardo and MAHLE Powertrain UK, the technology provides greater efficiency and easier packaging than a mechanical supercharger or a two-stage turbocharger.
Aeristech said it overcame the thermal management issues that can restrict other electric boosting devices currently available on the market to only transient operation by using permanent magnet motor technology in place of the more usual switched reluctance type. This has been made cost-effective by developing a patented control and switching technology that enables the use of many cost-competitive components.
Frost & Sullivan projects Volkswagen Group to be the leader in 48V systems over next 10 years
June 15, 2015
In a new report on the prospects for 48V automotive systems (earlier post), consultancy Frost & Sullivan forecasts that the Volkswagen Group will lead in this area primarily because of Audi’s 48V offering (earlier post). The consultancy projects that by 2025, Volkswagen Group will have 48V volumes in excess of 1 million systems in North America and Europe combined, far exceeding its competition.
The report, “The 48V Power-net Market in Europe and North America”, projects that by 2017, Audi and PSA will be the front-runners in Europe, while in North America, the major push is expected by the German OEMs.
Audi power-dense 2.5L TFSI engine with electric biturbo delivers 591 hp from 2,480 cc; 48V subsystem for the turbo
May 09, 2015
At the Wörthersee festival, Audi is showcasing the Audi TT clubsport turbo technology concept equipped with a new 2.5 TFSI gasoline engine with an electric biturbo (earlier post) that delivers 441 kW (591 hp) and 650 N·m (479.4 lb-ft), with acceleration from 0 to 100 km/h (62.1 mph) in 3.6 seconds. Peak torque is available from 3,000 to 7,000 rpm. Power is transferred via a manual six-speed transmission.
While production car engines with this level of output are available from a number of mainstream OEMs, the displacement of the Audi engine is about half or less that of the others, resulting in a very power- and torque-dense unit. The five-cylinder, 2,480 cc engine produces 178 kW (239 hp) and 262 N·m (193 lb-ft) per liter of displacement. By comparison: