Automakers like Toyota, Mercedes, and Mazda are ditching V6 engines in favor of more efficient and cost-effective powertrains ...

[Stay on top of transportation news: Get TTNews in your inbox.] Advanced researchers and engine makers say the internal combustion engine’s ability to be more efficient and run on greener fuels means ...

Astro Mechanica's engine operates in three distinct modes: Mode 1 uses an electric motor to spin the "blisk" – a bladed disk the company makes in-house that acts as the compressor/turbofan instead of ...

The Rolls-Royce Trent XWB-84 EP boasts strong operational credentials.

Astron aerospace has shown a partial prototype of a new rotary combustion engine it claims runs at an extraordinary 60% thermal efficiency, burning totally clean with zero NOx emissions and nothing ...

Chrysler's HEMI engines have been around since the 1950s, but they were used as early as 1905 by car manufacturers like Pipe. Over time, these engines have become an appealing choice for car ...

Finnish manufacturer Wärtsilä introduced an engine back in 2015 that was so good, it snagged a Guinness World Records title for being the most efficient four-stroke diesel engine shortly after its ...

Built on its long-running Heavy-Duty Engine Platform, Daimler Truck North America’s new Gen 6 diesel engines utilize a novel pre-SCR system to meet the EPA’s strict 2027 NOx limits while delivering a ...

Cummins released details of its 2027 X15 diesel engine, which it says meets EPA 2027 emissions requirements while improving fuel economy — and without adding weight or using more diesel exhaust fluid.

This has been discussed before on Ars, such as at https://arstechnica.com/civis/threa...ost-efficient-heat-pump-in-the-world.1501605/, and https://arstechnica.com ...