Toyota Alabama has assembled its 10-millionth engine, an i-Force MAX 2.4-liter, to power an all-new hybrid Tacoma. The engine plant, which first broke ground in 2001, assembles a third of all Toyota engines in North America. Toyota Alabama’s 2,000 team members assemble upwards of 777,000 engines a year. When the... Read more →

LiquidPiston, an innovator of efficient internal combustion engine technology and hybrid power systems, has begun testing its 10kW heavy-fueled generator prototype. The genset is powered by LiquidPiston’s 25hp heavy-fueled XTS-210 rotary engine, which itself entered its integrated engine testing phase in April 2024. The company has been awarded more than... Read more →

Clean Energy Fuels, the largest provider of renewable natural gas (RNG) for the transportation industry, is launching a program to allow heavy-duty fleets to operate a truck equipped with the new Cummins X15N engine (earlier post). The first company to participate in the program is industry leader J.B. Hunt Transport... Read more →

Allison Transmission announced the integration of the Allison 4000 Series transmission with a Class 8 truck equipped with a Hydrogen Internal Combustion Engine (H2-ICE) displayed by Southwest Research Institute (SwRI) at SAE International’s Commercial Vehicle Engineering Congress (COMVEC) in Schaumburg, Illinois. The H2-ICE vehicle demonstrates emissions control capable of outperforming... Read more →

Allison Transmission and Cummins will integrate and certify a Cummins B-Series engine with the Allison eGen Flex electric hybrid propulsion system for the transit market. The integration will meet the EPA’s Greenhouse Gas Emissions Standards for Heavy-Duty Vehicles – Phase 3 and provide a reliable low emission propulsion solution in... Read more →

The power-rich and versatile 3.0-liter Hurricane High Output (H/O) Straight-Six Turbo (SST) engine, as tested in a 2025 Ram 1500 Tungsten, has earned a 2024 Wards 10 Best Engines & Propulsion Systems award. This recognition marks the eighth consecutive year that a Stellantis propulsion system has earned a spot on... Read more →

MAN Energy Solutions has announced a new generation of its Common Rail injection system for its medium-speed, four-stroke portfolio. The CR 2.2 common-rail fuel-injection system will eventually completely replace its CR 1.6 predecessor and builds on its experience, allowing a very precise and flexible control of injection pressure, timing, and... Read more →

The Audi Q5 SUV has been one of the most popular SUVs in the midsize-segment in Germany and Europe for more than 15 years. Audi is now presenting the latest generation of the bestseller. The new Q5 is the first SUV based on the Premium Platform Combustion (PPC) and is... Read more →

The US Department of Energy’s (DOE’s) Office of Fossil Energy and Carbon Management (FECM) recently announced $8.8 million for 11 university-based research and development projects to improve the performance of hydrogen-fueled turbines. The selected projects will develop advanced materials and components that can better manage and withstand the extreme environment... Read more →

Wärtsilä has signed a contract with Norwegian shipowner Eidesvik to supply the equipment for the conversion of an offshore platform supply vessel (PSV) to operate with ammonia fuel. The vessel, ‘Viking Energy’, which is on contract to energy major Equinor, is scheduled for conversion in early 2026 and is expected... Read more →

NYK Line and IHI Power Systems, in cooperation with Nippon Kaiji Kyokai (ClassNK), have completed the world’s first ammonia-fueled vessel for commercial use—the tugboat Sakigake. The NYK Group company Shin-Nippon Kaiyosha will employ the vessel in tugboat operations in Tokyo Bay over a three-month demonstration period. This vessel was a... Read more →

Ultra-Compact Mobile Command Post Auxiliary Power Unit would offer integrated power generation for increasingly critical mobile, dispersible, and survivable combat posts LiquidPiston, a developer of compact, efficient, heavy-fuel-capable rotary combustion engine technology and hybrid power systems, received notification of selection for a US Army SBIR (Small Business Innovation Research) CATALYST... Read more →

MAN Engines is presenting the new and previously unreleased MAN D3872 V12 workboat engine with a displacement of 30 liters at SMM 2024. This offers a significant increase in displacement compared to the MAN D2862 series with 24 liters of displacement, which has been established for many years. MAN Engines... Read more →

MAN PrimeServ—the after-sales brand of MAN Energy Solutions—has announced that, from 2025, it will offer a retrofit package for the conversion of conventional MAN four-stroke engines already in the field to dual-fuel methanol operation. Customers will initially be able to convert existing MAN 48/60 engines to the latest MAN 51/60DF... Read more →

Since model year 2018, manufacturers have recommended or required premium gasoline for more than half of all light-duty vehicle configurations, according to the US Department of Energy (DOE). In model year 1985, premium fuel was required/recommended for 6.5% of new vehicle model configurations. In pursuit of efficient performance, manufacturers have... Read more →

A team from Beijing University of Technology and Beijing Automobile Research Institute Company has used ammonia as a combustion inhibitor to mitigate or eliminate knock and to expand power in a direct-injection hydrogen engine. A paper on their work is published in the journal Fuel. Hong et al. Knock-free operation... Read more →

A team from Tianjin University in China has expxlored the combustion and flame development characteristics of ammonia at different excess air ratios (λ) in an optical spark ignition (SI) engine employing high-speed natural flame luminosity (NFL) imaging, OH* chemiluminescence imaging and flame spectra measurement. The combustion performance and flame development... Read more →

The fourth generation of the Porsche Cayenne will be all-electric. Porsche is simultaneously moving forward with the development of its hybrid and combustion engine third-generation models. Up to and beyond 2030, the successful SUV will be offered with three powertrain variants worldwide. The third generation of the Cayenne will be... Read more →

Mercedes-Benz Special Trucks and Mörtlbauer Baumaschinen Vertriebs GmbH jointly presented their two prototypes as part of the “WaVe” development project to research hydrogen combustion engines for special-purpose vehicles. The Unimog test vehicle and crawler demonstrated their performance in driving and working operation on the Mörtlbauer factory premises in Fürstenzell, Bavaria.... Read more →

Volvo Trucks North America announced the availability of an engine that meets California Air Resources Board (CARB) 2024 Omnibus regulation requirements for low nitrogen oxide (NOx) and particulate matter (PM) emissions standards. The CARB Omnibus regulation mandates a 75% reduction in NOx emissions and a 50% reduction in particulate matter... Read more →

Rheinmetall has won two orders in the field of exhaust technology for hybrid vehicles with a total value of around €20 million. Both orders relate to the subsidiary Pierburg China. One order is for the supply of fuel tank shut-off valves (FTIV) by a well-known Chinese supplier of carbon canisters.... Read more →

Researchers from Worcester Polytechnic Institute (WPI) and State University of New York (SUNY) Polytechnic Institute have shown that superlubricity—a state with virtually no friction that was once believed to only be achievable at nanoscale—can now be maintained at macroscale for extended time periods under regular atmospheric conditions by employing sustainably... Read more →

A new study led by researchers from MIT finds that burning ammonia for maritime fuel could worsen air quality further and lead to devastating public health impacts, unless it is adopted alongside strengthened emissions regulations. It has been estimated that maritime shipping accounts for almost 3% of global carbon dioxide... Read more →

Planes flying into one of the world’s busiest airports are ingesting around 10kg of dust per 1,000 flights—with most of this dust ingested while they are waiting to land, new research has revealed. Scientists used 17 years of ECMWF atmospheric data and data from the CALIPSO satellite to calculate the... Read more →

MAHLE Powertrain, the specialist engineering subsidiary of the MAHLE Group, is expanding its Northampton facility to include a dedicated hydrogen powertrain testing capability. The capacity to hold two tube-trailers on-site with rapid switch-over functionality between them will ensure a near-continuous supply of hydrogen. In addition, upgraded engine dynamometers with a... Read more →

Aramco, one of the world’s leading integrated energy and chemicals companies, has signed definitive agreements to acquire a 10% equity interest in HORSE Powertrain Limited, the new global powertrain solutions company, alongside Renault Group, Zhejiang Geely Holding Group and Geely Automobile Holdings Limited. HORSE Powertrain Limited was formed on 31... Read more →

Rolls-Royce has started, with a consortium of five companies and research institutes, to develop the necessary technologies for a highly efficient first-of-a-kind hydrogen combustion engine to drive combined heat and power (CHP) systems. Under the Phoenix (Performance Hydrogen Engine for Industrial and X) project, funded by the German Government, the... Read more →

Technology group Wärtsilä launched the world’s first large-scale 100% hydrogen-ready engine power plant. The IEA World Energy Outlook 2023 shows that hydrogen is an essential component of future power systems. According to the report, the pathway to reach net zero emissions by 2050 requires 17 Mt of hydrogen to be... Read more →

Aurobay, a HORSE Powertrain company, signed a significant agreement with the Turkish industrial conglomerate Habaş Sınai ve Tıbbi Gazlar İstihsal Endüstrisi A.Ş. Under the agreement, Aurobay will supply complete powertrain solutions for Habaş’ new passenger cars, with production scheduled to start by the end of 2026. Aurobay will supply two... Read more →

Peterbilt announced the availability of a new CARB low nitrogen oxide (NOx) compliant PACCAR MX-13 engine in the Models 579, 567 and 589. This engine meets the CARB Omnibus Regulation and features redesigns of internal hardware and the aftertreatment system to effectively reduce NOx emissions. The larger volume aftertreatment system... Read more →

The two classification societies, the American Bureau of Shipping (ABS) and Lloyd’s Register (LR), have awarded a new ship design of an ammonia-fueled 3,500 TEU container vessel Approval in Principle (AiP). A cross-industry taskforce including A. P. Møller-Mærsk, MAN Energy Solutions, Deltamarin, Eltronic FuelTech, ABS, and LR, and led by... Read more →

Volvo Group and Westport Fuel Systems announced the closing and launch of their previously announced joint venture transaction. (Earlier post.) The joint venture is committed to accelerating the commercialization and global adoption of Westport’s HPDI fuel system technology for long-haul and off-road applications. The joint venture will be led, on... Read more →

Fokker Next Gen is designing a clean sheet aircraft to contribute towards the net zero carbon emission vision of the future of flight. The design is a single aisle narrow body commercial aircraft seating 120 to 150 passengers, and has a flight range of 2,590 km (1,400 nm). The aircraft... Read more →

CMB.TECH and Damen are collaborating on hydrogen-powered ASD Tugs. Built by Damen, these vessels use CMB.TECH’s innovative dual-fuel hydrogen technology that will significantly reduce emissions. The dual fuel hydrogen ASD Tugs 2812 FF-H2, with 80-tonnes bollard pull meet the most stringent IMO Tier III and EU Stage V standards. The... Read more →

Following the joint venture agreement signed on 11 July 2023 (earlier post), and after having obtained the approval of the relevant authorities, Renault Group, Geely Holding Group (Geely Holding), Geely Automobile Holdings Limited (Geely Auto) (collectively referred to as “Geely”) have officially created HORSE Powertrain Limited, headquartered in London, United... Read more →

Subaru, Toyota Motor and Mazda Motor have each committed to developing new engines tailored to electrification and the pursuit of carbon neutrality. With these engines, each of the three companies will aim to optimize integration with motors, batteries, and other electric drive units. While transforming vehicle packaging with more compact... Read more →

Toyota Motor will enterthe ENEOS Super Taikyu Series 2024 Empowered by BRIDGESTONE Round 2 NAPAC Fuji SUPER TEC 24 Hours Race, to be held from May 24 to 26, with the #32 ORC ROOKIE GR Corolla H2 Concept, a hydrogen-powered GR Corolla running on liquid hydrogen. (Earlier post.) The durability... Read more →

Kenworth showcased its SuperTruck 2 demonstrator vehicle at the ACT Expo in Las Vegas. The truck was developed over a six-year period as part of a collaboration with the Department of Energy’s (DOE) SuperTruck program, designed to challenge truck makers to improve freight efficiency using a diesel engine as the... Read more →

Volvo Trucks is developing trucks with combustion engines that run on hydrogen. On-road tests with trucks using hydrogen in combustion engines will begin in 2026, and the commercial launch is planned towards the end of this decade. Volvo trucks with hydrogen-powered combustion engines will feature High Pressure Direct Injection (HPDI),... Read more →

Southwest Research Institute (SwRI) has successfully completed development of a hydrogen-fueled Class-8 demonstration vehicle, built as part of its industry-supported H2-ICE consortium. The central focus of the demonstration includes development of a Hydrogen Internal Combustion Engine (H2-ICE) that produces ultra-low NOx and CO2 emissions while still providing enough torque and... Read more →

At ACT Expo, Achates Power (API) is displaying one of three engine variants of what it calls the cleanest and most efficient combustion engine architecture to date. With the industry facing massive disruption due to stringent limits on both criteria and CO2 emissions, API’s demonstrations of its opposed-piston engines have... Read more →

A full range of new Volvo truck models can now be powered by 100% biodiesel (B100), offering another renewable fuel choice for customers looking to reduce CO2 emissions from transport immediately. Volvo Trucks has one of the industry’s broadest ranges of renewable fuel options, including biodiesel, HVO (Hydrotreated Vegetable Oils)... Read more →

Bosch Engineering and Ligier Automotive have taken their Ligier JS2 RH2 hydrogen-powered demonstrator vehicle (earlier post) to the next level. In recent months, tests have been carried out to test the engine and the entire vehicle for robustness and endurance performance and to optimize the drive concept further. By systematic... Read more →

Fortescue, with support from the Maritime and Port Authority of Singapore (MPA), successfully completed propulsion and maneuverability trials of its Singapore-registered Fortescue Green Pioneer in the Port of Singapore. (Earlier post.) The trials were conducted using 6.4 m3 (4.4 tonnes) of liquid ammonia, in combination with diesel and Hydrogenated Vegetable... Read more →

At the 2022 Paris Motor Show, Alpine presented its Alpenglow concept, embodying the brand’s ongoing research into hydrogen-powered combustion engines for sports cars, with the potential for high performance both on the road and in competition, in line with the brand’s decarbonization targets. Alpine has now presented the Alpine Alpenglow... Read more →

In a paper in the journal Fuel, a team from India reports on their investigation of he potential of ammonia as a secondary fuel in diesel engines. A single-cylinder diesel engine was utilized to assess engine performance and combustion characteristics using ammonia gaseous blends. Ammonia was combined with biogas to... Read more →

Aston Martin unveiled its new V12 engine, whic delivers 835PS and an extraordinary 1000N·m of torque. The result of a complete re-design, targeting optimization and improvement, the new engine refines every stage of the internal combustion process to achieve its levels of performance and efficiency. Hardware highlights of the new... Read more →

Technology group Wärtsilä will supply the methanol-fueled auxiliary engines for five new container vessels for COSCO Shipping Lines Co., Ltd and seven new container vessels for Orient Overseas Container Line. Each vessel will operate with three 8-cylinder and two 6-cylinder Wärtsilä 32M engines. This is the Chinese maritime sector’s largest... Read more →

Lamborghini unveiled the Urus SE, the first plug-in hybrid (PHEV) version of the Lamborghini Super SUV, at the Volkswagen Group Media Night ahead of the public premiere at Auto China Beijing 2024. The twin-turbo 4.0 V8 engine has been re-engineered to work in optimal synergy with the electric powertrain. It... Read more →

Eaton has been chosen to supply an electromechanical actuation system (EMAS) that can deliver an early intake valve closing (EIVC) to the China-based automaker Great Wall for use in a line of hybrid-electric vehicles (HEV). The Eaton EMAS is a discrete valvetrain-based technology that allows manufacturers to select the intake... Read more →