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Chery A15 Maintenance Manual 90º. The current intensity passing through coils changes with ohmic value of sensor, therefore the magnetic flux produced by coils in four directions change correspondingly to rotate magnetic spindle and move gauge pointer.
3. Function and Principle of Water Temperature Sensor Chery A15 adopts a thermal resistance water temperature sensor, as shown in the figure. Coolant temperature sensor serves to measure working temperature of engine, while ECM provides optimal arrangement of controls according to different temperatures. Coolant temperature sensor adopts a negative temperature coefficient resistor as the sensing element; Terminals: 1-signal grounding, 2-Temperature signal Installation: Coolant temperature sensor is fixed on coolant lesser circulation passage behind the engine.
4. Parameters Working voltage: 5V DC Working temperature: -40~135C Resistance: 3560~2260 Ω under normal temperature 20~30ºC Thermal resistance is made of semiconductor material with negative temperature coefficient, whose ohmic value sharply declines with the increase in temperature. Water temperature sensor is serially connected with cross coils in water temperature gauge. When engine coolant temperature increases, ohmic value of water temperature sensor decreases, the current passing through cross coils consequentially increases, and the deflection angle of gauge pointer becomes larger. Contrarily, when engine |