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POWER
Power (P) is the amount of work done in a certain period of time.
Is expressed in Watts :
1W = 1 N (ewton) x m (eter) / s (ec)
1kW = 1000 W
The old unit is HP (Horse Power)
1 horsepower (HP) is the power required to raise a 75 kg weight
to a height of 1 meter in 1 second.
1 HP = 75 kg-m/sec
1HP = 745.7 W
1kW = 1.341 HP
TORQUE
Torque (M) is the turning force exerted on one object by another.
Torque (M) = Force (N) x Length (m).
The old unit is kgm.
Engine efficiency, fuel consumption is optimized in the rpm
range of an engine's maximum torque output.
RELATIONSHIP POWER & TORQUE
Power and torque are related in the following way:
P = M . n
and M = P . 9550
9550
n
- 17 -
POWER OUTPUT
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