Bench test system and test method for air conditioner cutting condition and whole vehicle braking condition

Abstract

The invention discloses a bench test system and test method for an air conditioner cutting condition and a whole vehicle braking condition. The bench test system comprises a host computer, a data acquisition device, an environment simulation cabin, a chassis dynamometer, a test vehicle and also comprises an engine outlet water temperature sensor, an engine inlet water temperature sensor, an engine oil temperature sensor, an air conditioner blowing surface air outlet air temperature sensor, a compressor air discharge pressure sensor, a compressor air suction pressure sensor, a cooling fan voltage sensor and a compressor clutch voltage sensor which are electrically connected to the data acquisition device. The host computer is electrically connected to the data acquisition device and an ECU of the test vehicle. The test method comprises the steps of carrying out test vehicle access inspection, laying each sensor and connecting wires, fixing the test vehicle and connecting wires, setting a simulation environment, preheating the test vehicle, simulating the breaking condition to drive and collecting data, and recording and analyzing the data. According to the system and the method, the test universality and the comparability of a test result can be improved.

Description

technical field [0001] The invention belongs to the field of bench testing of a complete automobile, and in particular relates to a bench testing system and a testing method for the cut-off condition of an air conditioner in a braking working condition of a complete vehicle. Background technique [0002] The automotive air conditioning system is composed of one or more components in the refrigeration device, ventilation device, air purification device and humidification device, as well as necessary control components, and is used to adjust the temperature, humidity, and cleanliness of the air in the passenger compartment, and make it a certain Speed ​​is directed and distributed within the passenger compartment, thereby providing a comfortable environment for the driver and passengers. Users have obvious subjective feelings on the cooling performance and cut-off performance of the air-conditioning system, which have a great impact on the comfort of the occupants, and are als...

AI Technical Summary

Problems solved by technology

[0004] The road test can most directly detect the cut-off of the air conditioner under the braking condition of the car, but the road conditions are difficult to control, subject to differences in the environment (humidity, temperature, wind speed) and regions, the test repeatability and the comparability of the test results are relatively poor

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