How to judge the failure of the automobile air conditioning electronic expansion valve life test bench

　　
This system can test electronic expansion valves under various conditions, including maximum opening and closing angles, excitation speed, and other parameters. It also supports operating life testing of solenoid valves at varying rated voltages. How does the automotive air conditioning electronic expansion valve life test bench determine failure? Let's take a look at how Guangzhou Zhipinhui Electronic Technology explains it.

Failure Detection: The pressure sensor reads pressure, and the fully closed and open valve pressures are set
in the software to detect changes in intake pressure.
When the intake pressure exceeds the set value,
the system alarm indicates failure and records parameters such as the number of runs.

Number of test stations: 5. By replacing the test fixture,
electronic expansion valves and solenoid valves can be tested for life and leakage
(leakage is tested using the pressure-maintaining method).