Intake, compression, power, then exhaust. Every 4-stroke engine ever made – about 80% of all engines currently in existence – function on this principle – even rotary engines. But now, Porsche has ...

Add Yahoo as a preferred source to see more of our stories on Google. Almost all gasoline engines, whether they're efficient-yet-less-refined four-cylinders, high-horsepower V6s, or growly and ...

A detailed test of a compact 4-stroke OHV gasoline engine converted into a functional generator for experimental projects.

Wärtsilä introduced its new Wärtsilä 25 medium-speed four-stroke engine based on its modular technology platform and designed to accelerate and support the maritime sector’s efforts in achieving ...

Generally, combustion engines follow a standard principle of operation founded on the premise that the crankshaft spins clockwise (as seen from the driver’s seat). That’s how the powerplants are ...

Watch this miniature 4-stroke OHV gasoline engine from Stirlingkit transformed into a fully working generator. A fascinating ...