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by grkvlt
3500 days ago
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So, torque is defined as Tau = P / omega where P is power, omega is angular velocity and Tau is torque. In an ICE, P varies a lot with rpm (i.e. angular velocity) giving a sort of inverse-bathtub curve whereas in an electric motor the power curve is pretty much flat. In an ICE at startup (so essentially zero plus epsilon rpm or angular velocity) the power is quite low, so torque is also low. In the electric motor the power output will be essentially whatever it is rated at, so the torque will be highest at this point, getting lower as rpm (angular velocity) increases. For a much better explanation than I can provide, see https://en.wikipedia.org/wiki/Power_band#Electric_Motors |
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