Just about every piston engine is defined by two basic measurements: bore and stroke. Bore is the diameter of the cylinder. Stroke is the distance the piston travels from bottom dead center to top ...

Gearheads and faithful Jalopnik readers already know the basics of an engine's bore and stroke, but for those that might be new here, let's dip our toes in the shallow end. An engine's bore refers to ...

We've seen many engine configurations come and go, with some being more noteworthy than others and some being just outrageous. Honda attempted to modify the shapes of the pistons used in its engine, ...

Yanmar Power Technology has successfully completed a land-based demonstration test of a pilot-ignition hydrogen 4-stroke high-speed engine designed for power generation in coastal vessels. The ...

MAN Energy Solutions has set out to create a four-stroke, medium-speed, dual-fuel test engine that operates on ammonia. The company on Tuesday announced the initiation of the ‘AmmoniaMot 2’ research ...