Warning device for timing of filling of refrigerant in car air conditioner

摘要

In the present invention, when the amount of the refrigerant initially held in the air conditioner mounted on the automobile decreases over time, the amount of refrigerant that can sufficiently cool the interior of the automobile is less than the amount of the refrigerant, The present invention relates to a warning device for a refrigerant filling timing in an automobile air conditioner for warning a driver to supplement a refrigerant of an air conditioner. The air conditioner system includes an air conditioner internal pressure sensor, an outside air temperature sensor installed outside the car, The air conditioner internal pressure is measured from the air conditioner distribution pressure sensor, the outside air temperature is measured from the outside air temperature sensor, and the microcomputer ECU compares the inside air pressure and the outside air temperature with each other, If it is higher It is determined that the amount of the refrigerant in the air conditioner is insufficient. If the internal pressure of the air conditioner is lower than the predetermined value, it is determined that the amount of the refrigerant in the air conditioner is insufficient. There is an effect to tell.