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STATION FOR RECOVERING AND RECHARGING REFRIGERANT FLUID FROM AN AIR CONDITIONING SYSTEM OF A MOTOR VEHICLE WITH INCONDENSABLE GAS DETERMINATION SYSTEM, AND CORRESPONDING METHOD
STATION FOR RECOVERING AND RECHARGING REFRIGERANT FLUID FROM AN AIR CONDITIONING SYSTEM OF A MOTOR VEHICLE WITH INCONDENSABLE GAS DETERMINATION SYSTEM, AND CORRESPONDING METHOD
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机译：从具有不可确定性的气体确定系统的汽车空调系统中回收和充注制冷剂的站及相应的方法
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摘要
Method of determining the presence of incondensable gases in a tank of a station for recovering and recharging refrigerant fluid from an air conditioning system of a motor vehicle. One of the pressure sensors will be used that is present in the charging station and designed for monitoring the operations in the A/C system of the vehicle, placed on the low pressure LP and/or high pressure HP lines of the climate station, so that in case of verification of the incondensable gases, the control electronics opens a coolant charging valve and an HP/LP separating valve, thereby flooding the service pipes so as to receive the pressure signal from one of said service pressure sensors, LP or HP, of the station, and compare said value with the temperature T of the tank and check whether such pair of values is a corresponding parameter, without tolerances, of a pressure-temperature curve of the pure refrigerant. If the incondensable gases need to be discharged, the control electronics proceeds with bleeding by operating the solenoid valve on top of the station until the pair (P, T) returns on the pressure-temperature curve of the pure refrigerant. At the end of the operations, the refrigerant filling valve is closed and the gas present in the pipes is recovered and introduced back in the tank.
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