Porsche's new patented six stroke engine might not be a thing of reality yet, but the new technology is still very interesting. Here's a breakdown.

The stroke is considerably shorter, and uses energy of the engine's exhaust vacuum to assist in the combustion cycle, also enabling ... arrays of cylinders (2, 4, 5, 6, 8, etc.) ...

Porsche engine tech New 4 + 2-stroke format Examining recent Porsche patents Porsche has filed patents for an engine cycle with two combustion events for every six strokes (or three ...