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

Green Car Congress

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

Green Car Congress

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 Ligier JS2 RH2 was officially presented to the public for the first time as part of the 100 th anniversary of the 24 Hours of Le Mans.

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

Green Car Congress

Rolls-Royce is planning a comprehensive series of rig and engine tests to prove hydrogen can safely and efficiently deliver power for small-mid size aircraft from the mid-2030s onwards. The company has further ambitions to move this on to a flight test phase as part of the program in the long term.

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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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In Praise of “Normal” Engineers

Cars That Think

A version of this post originally appeared in Refactoring , a Substack offering advice for software engineers. I think their existence is what explains the curious durability of the notion of a 10x engineer, someone who is 10 times as productive or skilled as their peers. At one point, I was a pretty good database reliability engineer.

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US Army awards Cummins $87M contract to deliver the opposed-piston Advanced Combat Engine

Green Car Congress

Coupling our opposed-piston technology with Cummins’s robust engine design, manufacturing, and new product introduction capabilities allows us to create a high performing and reliable engine for military operations. Earlier post.). —Dave Crompton, President and CEO of Achates Power.

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Werner Enterprises signs letter of intent to secure 500 Cummins X15H hydrogen engines

Green Car Congress

Werner Enterprises, a premier transportation and logistics provider, has signed a letter of intent to purchase 500 Cummins’ 15-liter hydrogen internal combustion engines upon availability. —Jim Nebergall, General Manager, Cummins Hydrogen Engine Business. Earlier post.) Earlier post.).

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