Determining operating life of fluid, especially gearbox oil, involves using algorithm relating variation in useful life to temperature in inverse proportion to rate of change in reaction rate

摘要

The method involves determining a reference useful life at a reference temp., detecting (36) the operating temp. during the period over which the fluid is in use and computing the useful life from an algorithm relating the variation in useful life to the temp. in inverse proportion to the change in reaction rate with temp.