| 摘要 |
PURPOSE:To prevent engine oil from being unnecessarily exchanged and used with its excessive deterioration by providing a computing means to send out an output signal when the integrated value of the coefficient of deterioration for every deterioration factor of engine oil exceeds a set standard value. CONSTITUTION:A load sensor 2, a revolution sensor 3 and a temperature sensor 4 detect a physical amount closely related with the degree of deterioration of engine oil. A microcomputer 6 finds out the coefficient of deterioration for every deterioration factor of the engine oil to add up it together, and integrates each added up value with passage of time. When the above integrated value speeds even one set standard value for every deterioration factor, the microcomputer 6 sends out an output signal. An alarm lamp 8 lights op on receiving the output signal from the microcomputer 6 to warn of the time of exchanging the engine oil. |
