Four-stroke engineWikipedia open wikipedia design.
The four-stroke engine is an internal combustion engine. The four strokes are:
|Stroke||Alias||Piston||Intake valve||Exhaust valve|
|intake||suck||opens, sucks in air + fuel||open||closed|
|compression||squeeze||closes, compressing the air + fuel||closed||closed|
|combustion||bang||opens, because air + fuel combust, expanding gas in cylinder||closed||closed|
|exhaust||blow||closes, blowing out the used gasses||closed||open|
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