[Diy_efi] Area under torque curve?

[Brian Dessent]

Derek wrote:

> So let me try your question now -
> X = torque = force x distance
> Y = revs/time
> Area under = force x distance x revs / time
>            = force x distance / time (since revs are dimensionless)
>            = "lb.ft. per sec" for instance
>            = "rate of doing work"
>            =  POWER - I think! - correct me if I'm wrong.

Power in linear motion is force times velocity; in rotational motion
it's torque times omega, where omega is the angular velocity in
radians/sec, essentially equivalent to RPM with a constant scale
factor.  So indeed, torque times RPM comes out to power (times some
scale factor.)

So my interpretation of area under torque curve is this: the total
energy delivered equals the area under the curve from RPM-1 to RPM-2
times the time it takes to get from RPM-1 to RPM-2.  Since the area
under the curve has units of power, if you multiply by time you get
energy.

Brian

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