Key to Porsche’s six-stroke engine is an eccentric crankshaft mechanism that changes the piston’s stroke, giving each cylinder two top and two bottom dead centers and three stroke lengths.

Key to Porsche’s six-stroke engine is an eccentric crankshaft mechanism that changes the piston’s stroke, giving each cylinder two top and two bottom dead centers and three stroke lengths ...

Here are some tips on choosing the proper pistons for your engine. 0:00 / 0:00. 2618 vs. 4032 Aluminum Alloy Piston Comparisons: No matter which type or brand of piston you decide to use, ...

IndyCar engines must weigh at least 248 pounds, and the car at least 1,570. So that's exactly what teams aim for and not an ounce more. We spoke with two of the men most responsible for the 2.2 ...

A new design for a piston-free linear engine generator has just been released by Toyota. With remarkable efficiency, the device might be scaled up to compete with electric power plants used in ...