Any oddball engine is clickbait crack for mechanical nerds, and the most compelling ones purport to introduce an entirely new combustion concept. "Not a four-stroke, not a two-stroke, a revolutionary ...

Today I want to show you a unique engine. It’s called the INNengine, and it claims to be a 1-stroke engine. No crankshaft, no cylinder head, 120hp naturally aspirated from just 500cc, and only 35kg.

Of the three United States automakers that offer diesel-powered heavy-duty pickup trucks, only two of those diesel engines are V8s. Those V8 diesel engines are the 6.6 Duramax found in offerings from ...