Variable displacement automobile air conditioning compressor system and control method

Abstract

The invention relates to a variable displacement automobile air conditioning compressor system and a control method, and belongs to the technical field of variable displacement automobile air conditioning compressors. The variable displacement automobile air conditioning compressor system is that a control piston is arranged at the other end of the existing compression piston mechanism, corresponding to a compression cavity; the compression cavity is divided into three chambers through the control piston and a compression piston in the compression piston mechanism; the medium chamber between the control piston and the compression piston is connected with an air inlet of a condenser through an exhaust pipeline; the control piston is connected with a stepping motor through a transmission mechanism and controlled by an engine ECU; the engine ECU controls the stepping motor according to the required refrigerating capacity to drive the control piston to move, so as to change the air volume of the compression cavity; therefore, the displacement can be changed when the exhaust pressure is unchanged, and as a result, the refrigerating capacity can be changed as requirement. According to the variable displacement automobile air conditioning compressor system, the compression cavity end part is changed a little based on the original fixed displacement; the complex inclined plate structures and electronic valve control systems of most of the current variable displacement compressors are saved; the mechanism is simple.

Description

technical field [0001] The invention relates to a variable-displacement automotive air-conditioning compressor system and a control method, belonging to the technical field of variable-displacement compressors. Background technique [0002] With the improvement of people's living standards, people's requirements for riding comfort are getting higher and higher. Automobile air conditioners are an important device on automobiles, which directly determine the quality of automobile comfort. The intelligentization, automation, and The development of comfort is an important part of automobile development, and the compressor is the core component of the air conditioner, which directly controls the performance of the entire air conditioner. And affect the economy, power and comfort of the whole car. [0003] At present, the compressors of all kinds of non-independent automotive air conditioners in automobiles are directly driven by the engine through the pulley, and many compressor...

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Problems solved by technology

[0004] The object of the present invention is to provide an air-conditioning compressor system and control method for variable-displacement automobiles, so as to solve the structural load and inaccurate temperature control problems of existing variable-displacement automobile air-conditioning compressor systems

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