| 摘要 |
PURPOSE:To make it possible to detect abnormality at an early step in the captioned lubricated function part, by providing a measuring chamber where a sensor is set for measuring the property of returned lubricating oil which has passed through the lubricated function part, and measuring the property of the lubricating oil so as to estimate the state of the lubricated function part. CONSTITUTION:The bubble in lubricating oil is defoamed, in the meantime the lubricating oil which has passed through a lubricated function part E1 fills a measuring chamber CB and the lubricating oil which has passed a lubricated function part E2 flows in a lubricating oil return system 2 through a suction pump Ps. Thereafter, the lubricating oil in the measuring chamber CB is pressu rized and the property of the lubricating oil which has passed through the lubricated function part E1 is measured by a sensor provided in the measuring chamber CB. By comparing said property with that of new lubricating oil, it is possible to predict and monitor any failure in the lubricated function part E1.
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