PISTON
Hi. The data is wrote below
~ 8.5 m / s for marine and power generation applications
> medium speed diesels
~ 11 m / s for trains or trucks
> high speed diesel
~ 14 m / s for automobile engines
> average gasoline speed
~ 16 m / s for automobile engines
> high speed gasoline
~ 20-25 m / s for sports car engines or motorcycles