In the working process of the automobile, the most important part is the cooling system of the engine, if it is in a high temperature state for a long time, it will cause engine damage. Therefore, NTC thermistor is required to monitor the coolant liquid of the cooling system in real time to ensure that the engine always operates within the normal temperature range.

Since the normal water temperature signal of the automobile engine needs to be kept at about 90 ℃, otherwise the engine output power will be affected if the temperature is too high, while the oil consumption of the automobile will be affected if the temperature is too low, it is necessary for NTC thermistor to cooperate with the water temperature sensor and the engine control unit to ensure the normal operation of the cooling system. Specifically, it is necessary to use the resistance value of NTC thermistor to decrease with increasing temperature to help the water temperature sensor monitor the real-time temperature of the coolant liquid, convert the temperature data into an electrical signal and feed back to the engine control unit, and then transmit the information to the central control dashboard of the automobile to remind the driver to pay attention to the temperature of the coolant liquid.

In the automotive water temperature sensor, the VT series automotive NTC thermistor produced by EXSENSE Electronics Technology Co., Ltd. is inserted, and its high temperature resistance characteristics can assist the automotive water temperature sensor to work normally under high temperature and high humidity conditions; Its sensitive response can assist the automotive water temperature sensor to quickly monitor engine temperature; Automotive NTC thermistor has high accuracy, which can assist automotive water temperature sensor to obtain temperature information more accurately and feed back to the engine control unit in time.