Method for Controlling Vehicle Air-Conditioning System, and Vehicle Air-Conditioning System

摘要

A control method for a vehicle air-conditioning system and a vehicle air-conditioning system are provided. The control method comprises: acquiring an actual superheat degree, a preset superheat degree and an opening degree of an electronic expansion valve; and determining whether the electronic expansion valve is in a fault state or not according to the actual superheat degree, the preset superheat degree and the opening degree of the electronic expansion valve; if yes, outputting a control signal to an executive control mechanism to enable same to adjust a parameter of a device affecting a change of the actual degree of superheat in a vehicle air-conditioning system so as to adjust the superheat degree of the vehicle air-conditioning system.

主权项

1. A control method for a vehicle air-conditioning system, comprising:
obtaining a determination result whether an electronic expansion valve is in a fault state according to a current opening degree of the electronic expansion valve, an actual superheat degree, and a preset superheat degree acquired while performing a superheat degree control, outputting a control signal to an executive mechanism according to the determination result; and adjusting, by the executive mechanism, a parameter of a device affecting change of the actual superheat degree in the vehicle air-conditioning system, to adjust the superheat degree of the vehicle air-conditioning system; or controlling, by the executive mechanism, turning off the compressor or the air-conditioning system.