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A diagram comparing the power and torque of a "torquey" engine versus a "peaky" oneThe power band which refers to the range of operating speeds under which the engine is able to operate efficiently. A typical gasoline automotive engine is capable of operating at a speed of between around 750 and 6000 RPM, but the engine's power band would be more limited. The engine would typically not generate maximum torque until higher operating speeds of perhaps 2500 RPM, after such, the torque drops off. The peak power (horsepower) might be closer to 5000 RPM. Such an engine would be said to have a "power band" of 2500-5000 RPM (another example would be from torque peak to redline: 2500-6000 RPM).
This can be applied to any engine and establishes a reliable quantification of the above notion "the engine is able to operate efficiently".
Contents [hide]
1 Power Band Tuning Considerations
1.1 Cost and Usage Considerations
1.2 Tuning for High Horsepower Output Vs. High Torque Output
1.3 Misconception
2 Power band considerations with a CVT vehicle
3 Non-Automotive Power Band Tuning
4 See also