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第1节电动机有什么性能特点与传统的燃油发动机相比,电动机作为汽车的动力系统有很多优势,主要包括两点:一是可以使汽车的加速能力更强。汽车静止时发动机怠速约为800r/min左右,当它从静止起步加速时,发动机的转矩必须随转速的升高而逐步升高,到达一定转速时才能输出最大转矩。涡轮增压发动机在一定转速范围内保持最大转矩,如左中图。而自然吸气发动机最大转矩对应的转速范围非常小,
Section 1 motor What are the performance characteristics Compared with the traditional fuel-powered electric motors, electric motors as a vehicle power system has many advantages, including two points: First, you can make the car more powerful acceleration. When the vehicle is still idle, the engine idle speed is about 800r / min. When it accelerates from standstill, the engine torque must gradually increase with the increase of the rotational speed, and the maximum torque can be output when the vehicle reaches a certain rotational speed. Turbocharged engine in a certain speed range to maintain maximum torque, as shown in the left figure. The naturally aspirated engine torque corresponding to the maximum torque range is very small,