Four-stroke engine
internal combustion engine type
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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