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LiquidPiston introduces XTS-210 25hp heavy-fueled rotary engine; 1/5th size & weight of current diesel piston engines of same power

Green Car Congress

LiquidPiston, an innovator of compact and efficient engine technology and hybrid power systems, intends to commercialize the XTS-210, a 25-horsepower, two-stroke, supercharged, liquid-cooled, 210cc rotary engine. XTS-210 engine core (left) compared to 25 hp Kohler KDW1003 (right). Earlier post.)

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Aquarius Engines unveils free-piston linear engine operating on 100% hydrogen

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Israel-based Aquarius Engines unveiled a hydrogen-fueled version of its free-piston linear engine new hydrogen engine. The 10kg machine, based on the same technology as the original patented single-piston linear engine, operates exclusively on hydrogen.

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Load-control strategies for ammonia-hydrogen dual-fuel engine for hybrid power systems

Green Car Congress

A team at Beijing University of Technology has evaluated four load control strategies—throttle, ammonia-hydrogen ratio, air–fuel ratio, and variable valve timing—for an ammonia-hydrogen dual fuel Miller cycle spark ignition engine in a hybrid system. The engine—a Miller cycle engine with a compression ratio of 10.7—was

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Mercedes-Benz presents prototype Unimog with hydrogen combustion engine; multi-power distribution

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At this year’s demopark open-air exhibition, Mercedes-Benz is presenting a prototype of the Unimog based on the U 430 with hydrogen-powered combustion engine as part of the publicly funded “WaVe” project. The hydrogen engine is provided by Keyou and is equipped with H2PFI injectors made by Hoerbiger.

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China Yuchai launches China’s first operating hydrogen engine for commercial vehicles

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The YCK05 engine is the first operating hydrogen engine for China’s commercial vehicle market, the world’s largest commercial vehicle market. The YCK05 engine is the first operating hydrogen engine for China’s commercial vehicle market, the world’s largest commercial vehicle market.

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Rolls-Royce announces new hydrogen engine program; updates on hybrid-electric research

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Rolls-Royce is launching a new leading-edge hydrogen program and also given a further update on its research into hybrid-electric power as it continues to pioneer new forms of aviation sustainability. Two ground tests are planned: on a Rolls-Royce AE 2100 engine in the UK this year and a Rolls-Royce Pearl 15 jet engine at a future date.

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Bosch Engineering and Ligier Automotive present Ligier JS2 RH2 with hydrogen engine at Le Mans

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Just a few months into a joint innovation project ( earlier post ), engineers from Bosch Engineering and Ligier Automotive have built a high-performance vehicle with a hydrogen engine. The vehicle features a V6 hydrogen engine and a carbon monocoque that integrates three 700-bar type IV hydrogen cylinders from Hexagon Purus.

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