Automotive giant General Motors has filed patents for a two-stroke engine of the type whose excess emissions took it off the road decades ago as a technology seen as having no future.The patent is for ...

General Motors (GM) is revisiting a technology long thought to be obsolete in the world of cars: the two-stroke engine.

Now, General Motors (GM) has gone and filed a new patent application for... a two-stroke engine. The document explicitly mentions use in hybrid vehicles, immediately raising a question: Is GM ...

All previous V3 engines through history have been two-stroke. Honda’s latest creation is a liquid-cooled four-stroke, with a ...

What if the engine of the future wasn’t just a dream, but a reality? Imagine a power source that combines the raw, exhilarating performance of a two-stroke engine with innovative efficiency, ...

GM has filed a patent application for a two-stroke engine valve system. The patent application is tagged with patent number US 2025/0354528 A1 and was filed with the United States Patent and Trademark ...

GM's Detroit Diesel division once made a two-stroke engine. A certain trait about this engine would lead to it getting the nickname of "Screaming Jimmy." ...

Everllence has confirmed the running on ethanol, at all load points, of its 21/31 dual-fuel engine at test facilities in ...

Porsche has patented a revolutionary new engine with a six-stroke combustion cycle. Essentially, the engine is combining both ...

Gearheads and faithful Jalopnik readers already know the basics of an engine's bore and stroke, but for those that might be new here, let's dip our toes in the shallow end. An engine's bore refers to ...