The invention discloses an automobile air conditioning system refrigeration mode fault judgment method. The method comprises the following steps: the temperature in an automobile and the air speed ofan air outlet are detected; when (T1standard - T1) is more than deltaT1 and |V1 - V1standard| is more than deltaV1, an air blower signal is detected, and if |I1 - I1standard| is more than deltaI1, itis judged that the air blower breaks down; when the (T1standard - T1) is larger than the deltaT1 and the |V1 - V1standard| is smaller than or equal to the deltaV1, an electric signal of the mixed airdoor is detected, and if the |I2 - I2standard| is larger than deltaI2, it is judged that the mixed air door breaks down; if the |I2 - I2standard| is smaller than or equal to the deltaI2, the high pressure of the system is detected, and if the high pressure of the system is too high, it is judged that a refrigerant is excessive; and if the high pressure of the system is normal or low, it is sequentially judged that whether an expansion valve, a compressor, a condenser and an evaporator have faults or not and the fault types.

    本发明公开了一种汽车空调系统制冷模式故障判断方法,包括:检测车内温度及出风口风速;当T‑T>ΔT,并且︱V‑V︱>ΔV时,检测鼓风机信号,如果︱I‑I︱>ΔI,则判断为鼓风机故障;以及当T‑T>ΔT,并且︱V‑V︱≤ΔV时,检测混合风门电信号:如果︱I‑I︱>ΔI,则判断为混合风门故障;如果︱I‑I︱≤ΔI,则检测系统高压:如果系统高压偏高,则判断为制冷剂过多;如果系统高压正常或偏低,则依次判断膨胀阀、压缩机、冷凝器和蒸发器是否发生故障及故障类型。


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    Title :

    Automobile air conditioning system refrigeration mode fault judgment method


    Additional title:

    一种汽车空调系统制冷模式故障判断方法


    Contributors:
    LI MING (author) / LYU RAN (author) / JIANG YAN (author) / WANG YONGZHEN (author)

    Publication date :

    2020-04-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht



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