How Does A Two-Stroke Engine Work?

There's a great website that provides an animated look at how engines work.

The crankcase of a two-stroke engines pulls in the gas/air mixture.

During the downward stroke of the valve, the gas/air mixture is compressed to the top of the crankcase. And then at the end of the stroke, the remaining fuel mixture is released into the exhaust.

Yeah, this is a really simple definition, but here's how it looks:

two-stroke engine

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