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Old 03-10-2010, 05:36 PM   #13 (permalink)
kannibul
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Quote:
Originally Posted by IDZRVIT View Post
Good explanation but the myth of the gas mixture "exploding" is just that. The gas mixture actually goes through a controlled burn expanding the gas from the combustion process through heat which pushes the piston downward on the power stroke.
If the octane isn't high enough for a given compression scenario, it does explode. This is called detonation, and it's heard as "knock"
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