[WapCar] The output power of the engine has a great relationship with the speed. With the increase of the speed, the power of the engine also increases correspondingly, but after a certain speed, the power instead shows a downward trend. Therefore, the engine speed when it reaches the maximum power is called the maximum power speed.
Generally, the unit of rotation speed in the car operating instructions is expressed in r/min. For example, the maximum power is 100Ps/5000r/min, that is, the maximum output power is 100 horsepower at 5000 revolutions per minute.