The oil temperature sensor is attached to the oil pan and sends a signal about the oil temperature to the engine control unit. At oil temperatures above 130 ° C, the engine control unit increases the idle speed to ensure that the minimum oil pressure is maintained. The oil temperature sensor has a temperature-dependent resistor that protrudes into the oil circuit and measures the temperature. The resistor has a negative temperature coefficient (NTC), i.e. the resistance sinks as the temperature increases.
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I |
Oil temperature sensor |
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1 |
Electrical connection |
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2 |
Casing |
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3 |
NTC resistor |
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B10 |
Oil temperature sensor |
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II |
Characteristic curve |
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Ω |
Resistance |
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° C |
Oil temperature |
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