Finnish engine manufacturer Wärtsilä must be a fascinating place to visit. The company manufactures some of the most mind-bendingly enormous marine diesel engines in the world, like the ...

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 ...

Designed for hand-held equipment, the GX25 mini 4-stroke engine weighs only 6 pounds and features a .29-kW/kg power-to-rate ratio. It replaces the GX22. Mechanical decompression provides easy start-up ...

Wärtsilä’s 4-stroke engine-based solution for ammonia fuel now delivers higher than ever levels of efficiency and performance. Following its introduction to the commercial marine sector in November ...

Nelson Ireson March 25, 2008 Comment Now! Smaller, more powerful motors are the future of the auto industry. GM and Chrysler are focusing on smaller four- and six-cylinder motors for their Camaro and ...

Ford engines to avoid include the 6.0- and 6.4-liter Power Stroke engines and certain variants of the 3.5-liter EcoBoost V6.

Sounds a bit crazy to make an engine that uses an odd number of strokes, right? We have 2, 4 and even 6-stroker engines so far, with the latter being still a prototype that injects water in the ...