Improve heat dissipation: heating the warm air can improve the heat dissipation in the car, which is especially useful for some Jetta cars to run long distances. 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.