The working principle of the heater control valve in the Audi A4L car is: the control valve relies on the engine for heating, and the heat of the engine heats the water temperature to provide warm air.
The heating system on the Audi A4L car is relatively simple. It does not need to be driven and just uses the waste heat of the engine to work. The refrigeration switch is turned off, the air conditioner refrigeration compressor stops working, and the air outlet channel is switched to the warm air channel (or natural air).
The driving force of the car's air-conditioning and refrigeration system comes from the engine. The engine drives the air-conditioning pump to work, and the resistance is large, so the refrigeration system usually consumes more fuel. Household air conditioners are basically driven by motors, so they consume a lot of electricity.
Extended information:
The heating control system of the Audi A4L car is introduced as follows:
The heat source comes from the engine coolant, and the water-heated heating system is mostly used in cars. , large trucks and buses with low heating requirements. The water heating heating system mainly consists of a heater, a hot water regulating valve, a blower, a control panel, etc.
Among them, the blower consists of an adjustable-speed DC motor and a squirrel-cage fan. Its function is to blow cold air toward the heater, and then the cold air is heated and sent into the car. By adjusting the speed of the motor, the amount of air supplied to the cabin can be adjusted.
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Baidu Encyclopedia - Car Heating System