The German automaker sees your four-stroke engine and raises you... two more strokes. Ready for some math? Porsche just ...

Orbital have been developing their stratified combustion process (Orbital Combustion Process OCP) for direct injection gasoline engines over the last 15 years, with successful production releases of ...

A patent for a six-stroke engine would normally go directly into our crackpot-engine file, but when the patent filer is Porsche, we feel obligated to examine it further. Unlike a four-stroke engine, ...