Posted by admin on Wednesday, December 29, 2010 · Leave a Comment
If a four stroke engine is not driven by anything apart from the explosion at the combustion stroke, how does it get through the other 3 stages. Surely, if the combustion stroke is the only stroke that drives the piston, there can't be enough power to drive THREE MORE STROKES!!!
Please don't confuse me. I'm only a beginner lol! ;-P
Jim is right.
Imagine when you would get a merry-go-round going when you were a kid. You put your energy into the spinning part in pulses. The merry-go-round keeps going around even though you let go. An internal combustion engine does the same thing with the fly wheel. It stores energy to keep the engine turning between power strokes. A heavy fly wheel is harder to get going, but stores more power. A light fly wheel accelerates faster, but has less stored energy. A single cylinder needs the larger fly wheel to get it to the next power stroke. A multi-cylinder engine can get by with a lighter one.
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