A 2.0-litre inline-four today makes marginally more power and better economy than it did five years ago. Sure, BMW’s B48 makes a ...

Small, ultra-fast, primary and “afterburner” secondary combustion events promise to deliver brake thermal efficiency as high ...

The tech bundles together an internal ... liter engine, also a 4-cylinder and also meant for medium and large vehicles, was designed with hydrogen use in mind, featuring a stratified combustion ...

Porsche has filed patents for an engine cycle with two combustion events for every six strokes (or three rotations of the crankshaft). They call it a 2 x 3-stroke. I’d humbly suggest it’s a 4 ...

If you've thought that, with the advent of the battery-electric vehicle and the latest trends, the research into new technologies for internal combustion ... stroke While the Scuderi Split-cycle ...

Hydrogen-powered internal ... combustion engine and features an upgrade in hydrogen capacity over the HySE-X1 thanks to an ...

This year, we’ve rounded up eight of the hottest 250cc four-stroke prospects, all hoping to be the first ... The GasGas receives the same base package as the KTM and Husqvarna—frame, engine and ...

Porsche has patented a revolutionary six-stroke internal combustion system. Contrast to all modern combustion engines that run the four-stroke Otto cycle that typically features one compression ...

A 4-stroke engine requires four of these movements (or two rotations of the crankshaft) to complete a power cycle in which air and fuel are drawn into the combustion chamber, compressed ...

Every 4-stroke ... combustion and power stroke to each revolution of the crankshaft means more horsepower to the wheels – and could also mean a more efficient internal combustion engine.