The role of car water temperature sensor

The main function of the water temperature sensor is to better feed back the temperature of the cooling water to the driving computer of the car. When the cooling water is abnormal, the driving computer will feed back according to the data stored in advance to find the corresponding signal source in time. adjust the control sheetYuan.

Working principle of water temperature sensor

To put it simply, the working principle of the automobile water temperature sensor is the conversion of electrical signals in different situations. The lower the temperature of the cooling water, the greater the resistance of the sensor, and the smaller the resistance in the opposite case, the electronic control unit will The temperature of the engine cooling water is often measured according to this change, and this signal is also used as a correction signal for fuel injection and ignition.

Therefore, car owners can fully understand the running status of the entire vehicle through the engine water temperature during use, and most car water temperature sensors are installed on the engine block or the water jacket on the cylinder head. This causes the sensor to be in direct contact with the cooling water, so that the water temperature can be measured more accurately.

In terms of price, the car water temperature sensor is not very expensive, and its cost performance is very high. You can buy a car water temperature sensor for about tens of dollars. Therefore, when car owners need to replace them, they don’t have to worry too much about their budget. After all, the cost performance of this part is indeed very high, and car owners also need to pay attention when purchasing, and must buy regular ones. product.