Method and device for monitoring condition of engine oil based on the detection of voltage across sensor electrodes when engine is running and at a specific temperature

摘要

The method involves measuring the voltage between the electrodes of a sensor immersed in the oil. Measurements are taken at a specific temperature with the engine running. The voltage is compared with a reference value and from the comparison a numerical value is derived and a warning is given if this value exceeds a threshold value. The sensor consists of two plates (102,104) with a gap (108) between them. Each plate is has a platinum electrode (118)