| 摘要 |
PURPOSE:To alarm an exchange of lubricating oil always in a correct timing, by providing a lubricating oil amount decrease detecting means detecting a decrease of lubricating oil, supplement detecting means detecting a supplement of lubricating oil and a deteriorating amount correcting means correcting a deteriorating amount of lubricating oil. CONSTITUTION:A lubricating oil deteriorating amount arithmetic means (a) obtains a deteriorating amount of lubricating oil from its use history, and when the deteriorating amount of lubricating oil reaches a predetermined amount, a replacement warning means (b) alarms an exchange of the lubricating oil. An oil amount decrease detecting means (c) detects a decrease of lubricating oil to its minimum required amount, while a supplement detecting means (d) detects a supplement of lubricating oil to its sufficient amount. When the supplement of lubricating oil to its sufficient amount is detected after the decrease of lubricating oil to its minimum required amount is detected, a deteriorating amount correcting means (e) corrects the deteriorating amount of lubricating oil. In this way, the exchange of lubricating oil can be alarmed always in a correct timing. |
