Variable displacement compressors are not necessarily fuel efficient

Nowadays, many cars are equipped with variable displacement compressors. Many people think that this is the same as inverter air conditioners to save fuel. In fact, it is not, the variable displacement compressor is mainly to improve comfort.

Because the fixed displacement compressor will be frequently turned on and off when it is working, the engine speed will fluctuate slightly at the moment of turning on and off, which will affect the driving comfort, and the intermittent operation of the compressor will cause the temperature of the air outlet to be high and low. Will affect comfort. The variable displacement compressor can choose the appropriate displacement work according to the set temperature, can continue to run and keep the temperature constant, improve comfort.

If you want to save fuel, there is not much difference between fixed displacement compressors and variable displacement compressors, because fixed displacement compressors work intermittently. Although they consume a lot of power during work, they do not consume power at all when they stop. Although the variable displacement compressor can run at low power, it runs continuously, and the variable displacement compressor is piston type, and the mechanical loss is greater, so the variable displacement compressor does not have much fuel consumption. Great advantage.