[MV] Power needed to drive the camshaft

Andreas Mehlhorn (a.mehlhorn@t-online.de)
Fri, 19 Jun 1998 17:53:54 +0200

Richard Notton schrieb:
> It is surprising how little effort is actually needed to turn a camshaft,
> having had a spanner on a few, once the heavy load of opening the first
> valve from rest is overcome most of the energy is recovered by the valves
> trying to close and it is possible to manually rotate the shaft quite
> smartly.
>
> Richard
> (Southampton UK)

You need around 2-3 horsepowers (2 kW) to operate the overhead camshaft
of a four cylinder in-line engine car engine.

Regards
Andreas

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