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9. OIL LEVEL SENSOR (OPTION)
9-1 FUNCTION
When the oil level sensor detects the insufficient level of engine oil, it halts engine for warning and
protection of engine.
9-2 PRINCIPLE
(1) Though it is very little, engine oil has electrical conductivity, while air is completely nonconductive.
Utilizing this difference, presence of oil is identified by the current between electrodes of the sensor.
(2) On the basis of this principle the sensing elements are merely fixed electrodes without mobile part,
hence, it is possible to conduct reliable measurement without influence of vibration. And it is also
shockresistant and free of deterioration.
Outer electrode
Inner electrode
In case of no oil
Conduction
Fig. 9-1
Содержание EY15-3
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