Thread: No Specific Make Rpm and gear shift
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Unread 10-03-2013, 11:14 PM   #1
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Default Rpm and gear shift

I'm reading about cars and how cars work, i faced something i couldn't understand which related to engine rpm and gear shift.

In first gear the engin rpm for crankshaft is high (let say 3000rpm) when shift to second gear the engin rpm drops (2000rpm) and so on.. I'm talking in general for old or new cars (manual or auto transmission)

I know about the gear ratio between crankshaft and drive shaft.

My question is
1. how the engine knows the gear is shifted to higher gear so that the engine will slow the rpm and the rotation in the crankshaft..
2. how the engine slow the rpm.

Thank you

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