There are many parts in the car, even some intelligent electronic equipment, and there are even more parts in the car. This is a very big learning test for every driver, because when buying a new car, you must have a corresponding understanding and understanding of the intelligent products and equipment of your new car. What should be pointed out here is the temperature control switch of the car, which is used as the adjustment of the temperature inside the car.

First, the automobile temperature control switch

The automobile temperature control switch adopts foreign high-quality dished bimetal as the temperature sampling element, and the warm water switch is installed at the sensitive part of water temperature. As long as it is connected with the corresponding mechanism, as long as the two contacts are quickly connected and the fan is started, the water in the cooling water tank will play a role in protecting the safety of the automobile engine. The general temperature range of automobile temperature control switch is 85~ 105℃, and the air conditioners and thermostats we usually use are basically brought by automobile temperature control switch.

Second, the principle and function of automobile temperature control switch

The working principle of automobile temperature control switch is mainly composed of internal sodium temperature, driving elements and contact genes on both sides. Generally, paraffin wax is heated from a fixed state to a liquid state, and the internal volume suddenly increases to move the front push rod. Only by controlling the opening and closing of the contact, paraffin pushes the push rod to expand and overwhelm the spring frame according to the increase of the coolant temperature. At this time, the water temperature reaches 95℃, so the low-speed contact turns off the radiator motor. After the electric fan is energized, it runs at the speed of 1600 rpm. When the temperature control switch reaches 105℃, paraffin will not continue to expand. At this time, the electric fan will run at a high speed of 2400 rpm to increase the strength. As long as the temperature drops, paraffin will shrink and the whole process will end slowly, so the working principle of temperature control switch is also like this.

Third, the judgment of automobile temperature control switch

The temperature control switch can judge whether it is good or bad. After all, when we buy a new car, the temperature control switch may be good. After one or two years of operation, it is necessary to test the temperature control switch. Generally, when the coolant reaches the set temperature to start the electronic fan, the fan does not turn or run, indicating that there is something wrong with the temperature control switch. If the engine cooling does not reach the set temperature, there is no need to turn on the electric fan. Then, if it is turned on, wait until the power consumption stops. There is also a problem of judgment, that is, the engine coolant can not be dissipated, which leads to the rising water temperature, so the temperature control switch of the car is also broken.