Why temperature sensor is used in vehicle?

All Questions › Category: Automotive Electronics › Why temperature sensor is used in vehicle?
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chetan shidling asked 5 years ago

I need short information.

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chetan shidling answered 5 years ago

The temperature sensor in automobile is used to measure the temperature of coolant, inlet air and exhaust gas oxygen sensor. It consists of a thermistor munted in a housing that is designed to be inserted in the coolant stream. A thermistor is made of semiconductor material whose resistance varies inversely with temperature. For example, at -40 degree a typical coolant sensor has a resistance of 100,000 ohms. The resistance decreases to about 70,000 ohms at 130 degree.