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    Short-term engine oil sludge test
    12.
    发明授权
    Short-term engine oil sludge test 失效
    短期发动机油泥试验

    公开(公告)号：US5000034A

    公开(公告)日：1991-03-19

    申请号：US524270

    申请日：1990-05-15

    Applicant: Scot E. Jaynes ,  Kirk E. Davis

    Inventor： Scot E. Jaynes ,  Kirk E. Davis

    IPC: G01N33/28 ,  G01N33/30

    CPC classification number: G01N33/2888 ,  G01N33/30

    Abstract: A short-term test procedure for comparing the engine sludge performance of different engine oils to a reference oil. The test procedure involves establishing a base line by operating one or more engines on the reference oil while maintaining a substantially constant volume of the reference oil in the engines without changing the oil until a Coordinating Research Council (CRC) sludge rating within a preferred range of 8.5 to 9.0 is achieved. In like manner, a series of engine tests are performed on one or more test oils using engines substantially identical to the reference oil engines for substantially the same number of miles as the average test miles of all of the reference oil engines under substantially the same test conditions as the reference oil engines while maintaining substantially the same volume of the test oil in the engines as the reference oil without changing the test oil in the engines throughout the tests. The average overall sludge rating for each test oil is then calculated based on all of the tests on each test oil, and compared to the average overall sludge rating for the reference oil to determine relative sludge performance.

    Abstract translation: 比较不同发动机油与参考油的发动机污泥性能的短期试验程序。 测试程序包括通过在参考油上操作一个或多个发动机来建立基线，同时在发动机中保持基本恒定的参考油体积而不改变油，直到协调研究委员会（CRC）污泥评级在优选范围内 8.5到9.0。 以同样的方式，使用与参考油发动机基本相同的发动机对一个或多个测试油进行一系列发动机测试，与基本上相同的测试中所有参考油发动机的平均测试里程基本相同的里程 作为参考油发动机，同时在发动机中保持与参考油基本相同体积的试验油，而不会在整个试验中改变发动机中的试验油。 然后根据每个试验油的所有试验计算每个试验油的平均总污泥评级，并与参考油的平均总污泥评级进行比较，以确定相对污泥性能。

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