Control method and device for automobile air-conditioning compressor

Abstract

The invention discloses a control method and a control device for an automobile air conditioner compressor. The method comprises the following steps: determining target temperature of an air conditioner evaporator according to temperature outside an automobile, light intensity, temperature set by a user and temperature in the automobile, acquiring the driving current of an electromagnetic valve in the air conditioner compressor according to the determined target temperature of the air conditioner evaporator, and finally determining the output torque of an engine of the automobile by virtue of the acquired driving current of the electromagnetic valve in the air conditioner compressor. According to the control method and the control device, the driving current of the electromagnetic valve in the air conditioner compressor is slowly regulated to fulfill the air of slowly regulating the output torque of the engine of the automobile according to the acquired target temperature of the air conditioner evaporator, so that the rotating speed fluctuation of the engine of the automobile is effectively avoided, the phenomenon of insufficient power of the automobile is also avoided, and the safety performance of the whole automobile is further improved.

Description

technical field [0001] The invention belongs to the technical field of automobile air-conditioning compressor control, in particular to a method and device for controlling the automobile air-conditioning compressor. Background technique [0002] As the core component of the car air conditioner, the compressor is directly connected to the driving wheel of the car engine through a belt, and the driving wheel of the engine directly transmits the power to the compressor. Insufficient vehicle power and other issues. [0003] Take the air-conditioning system matching the internal control variable displacement compressor (the internal control variable displacement compressor displacement adjusts the compressor displacement according to the compressor suction pressure) as an example. When the user turns on the compressor, the internal control valve senses that the suction pressure increases. Directly adjust the displacement of the compressor to instantly change to the maximum. [...

AI Technical Summary

Problems solved by technology

[0004] When the vehicle is idling or at low speed, the engine speed is low, and the compressor needs to consume the torque output by the engine when the air conditioner is turned on. At this time, the torque of the engine will increase instantly, and the engine speed will increase instantly, which will cause fluctuations in the whole vehicle (Idle speed generally fluctuates around 20-50rpm), which in turn affects the comfort of drivers and passengers and the safety of driving

[0005] When the vehicle is running smoothly, turning on the air conditioner suddenly will cause the engine load to increase suddenly, and the driver and passengers will suddenly feel the power drop

If the air conditioner is suddenly turned on when the vehicle is accelerating and overtaking, it will cause insufficient power of the vehicle and cause traffic accidents

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