Automotive System Power Performance Indicators

The power performance indicators in the automotive power transmission system refer to the maximum speed, acceleration performance, and hill climbing performance under the action of the automotive transmission. The maximum speed of a car on a well paved route reflects the ultimate capacity of the car's transmission system. The speed range of a sedan is 140-250km/h, while the speed range of a truck is 80-120km/h. The acceleration performance in the power performance indicators reflects the average speed of the car while driving. There is no unified evaluation index for acceleration performance, and the acceleration performance of the car's power transmission can be evaluated using the acceleration time from starting in place and overtaking acceleration time. Climbing performance, also known as the maximum climbing slope, is achieved by using the vehicle speed to complete the specified climbing operation after shifting into first gear, ensuring the stability of the vehicle's transmission. In the optimization design of power performance indicators, it is necessary to pay attention to the mutual matching between the indicators and the car's power transmission system to ensure that the car has sufficient transmission capacity.