You've probably heard of two- and four-stroke engines, but what are the four strokes of a gasoline engine? And how do they turn fuel into noise and speed?

The defining characteristic of a two-stroke engine is to fire (combust) every time the piston is at top dead center. This makes them highly power dense, but also notoriously makes two-stroke engines ...

Gasoline engines usually run on the Otto cycle, the standard four-stroke and two-stroke combustion process that has been powering humanity for a while now. Although engines typically rely on the "suck ...