Mobility is changing — it’s electrifying. But not every vehicle is suited for electric propulsion and heavy battery systems. That’s where the rotary exhaust valve (REV) is revolutionary. The Advanced ...

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 ...

Unless you're a motocross enthusiast, it's highly likely you haven't ben near a two-stroke engine in decades. While their mechanical simplicity, combined with an explosion on every complete revolution ...

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 ...

Conventional wisdom suggests that our faithful internal combustion (IC) engines are heading the way of the buggy whip. The lithium-ion battery has arrived, emissions standards are tightening, and ...