Principle: In addition to a radiator in the engine compartment, there is also a heat exchanger in the dashboard of the cab, and the antifreeze used to dissipate heat in the engine flows in the middle. 2, improve heat dissipation: turning on the warm air can improve the heat dissipation in the car, which is particularly useful for some Jetta cars to run long distances, and I have used it myself. The HFJ635 1B car is equipped with a water heating heater. The cooling water of the engine is used as the working medium and blown into the car from the same air outlet under the action of a blower, so as to achieve the purposes of heating, ventilation and defrosting. There are two main air intake methods: one is indoor air circulation, and the other is outdoor fresh air entering the car for ventilation circulation. The blower is electrically driven and influenced by the engine speed, so it can still be used for heating and defrosting even if the engine speed is very low.
Please accept it, thank you!