Method for testing frost-resistant capacity of automobile air-conditioning assembly

Abstract

The invention discloses a method for testing frost-resistant capacity of an automobile air-conditioning assembly, comprising an air-conditioning assembly, a compressor, a condenser, an air-conditioning pipeline, an expansion valve, a blower and a voltmeter. The air-conditioning assembly is an air-conditioning assembly with an evaporator and an air-inlet air-outlet temperature sensor. The condenseris a condenser with an air-inlet air-outlet temperature sensor. The air-conditioning pipeline is an air-conditioning pipeline with a three-way valve. The air-conditioning assembly is connected with the compressor and the condenser through the air-conditioning pipeline. Following the coordinate position of the integral automobile, the air-conditioning assembly is connected with an external air inlet pipe of the air-conditioning assembly and an air inlet of the air-conditioning assembly and sealed at the junction and at the inlet of the expansion valve. The method for testing frost-resistant capacity of an automobile air-conditioning assembly achieves the testing of the real automobile air-conditioning system bench and the testing of the full scale wind tunnel, and can accurately representthe operation condition of the air-conditioning system, and has accurate test results, low cost and easy popularization and application.

Description

technical field [0001] The invention relates to the technical field of a method for testing the anti-frosting ability of an air-conditioning assembly, in particular to a method for testing the anti-frosting ability of an automobile air-conditioning assembly. Background technique [0002] Cars will face various environmental conditions during driving, and the air-conditioning system will also face severe tests. The occurrence of frosting in automotive air conditioners is directly related to the setting of the temperature value of the evaporator surface temperature sensor, the matching of the system, the external environmental conditions and the driving status of the car. In order to maximize the cooling capacity of the air conditioning system, the cut-off temperature of the evaporator temperature sensor is usually set relatively low. prone to frosting. [0003] After the evaporator is frosted, the resistance of the fan will increase, and the air volume will decrease until t...

AI Technical Summary

Problems solved by technology

Individual frosting ability test and non-real vehicle system bench test cannot accurately reflect the operation of the air conditioning system, the working condition is single, the test results are quite different from the performance of the real vehicle system, and cannot effectively reflect the system capability

Due to the high cost of vehicle wind tunnel testing, only a few specific working conditions are usually tested

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