What Causes Frost on the Automotive Air Conditioning Expansion Valve?
1 Answers
Frost on the automotive air conditioning expansion valve is caused by insufficient refrigerant in the air conditioning system, among other reasons. Below is relevant information about automotive air conditioning: 1. Air Conditioning Layout: Different types of air conditioning systems have varying layouts. Currently, integrated heating and cooling air conditioning systems are widely used in passenger cars. The layout involves assembling components such as the evaporator, heater core, centrifugal blower, and control mechanism together, forming what is known as the air conditioning unit assembly. 2. Air Conditioning Components: Modern air conditioning systems consist of a refrigeration system, heating system, ventilation and air purification devices, and a control system. Automotive air conditioning typically includes components such as the compressor, electronically controlled clutch, condenser, evaporator, expansion valve, receiver-drier, piping, condenser fan, vacuum solenoid valve, idle speed controller, and control system. The automotive air conditioning system is divided into high-pressure and low-pressure lines. The high-pressure side includes the compressor output side, high-pressure lines, condenser, receiver-drier, and liquid lines; the low-pressure side includes the evaporator, accumulator, suction line, compressor input side, and compressor oil sump.
