BS 7403-4-1998
内燃机满液流式润滑油过滤器.初始微粒滞留效率、寿命和累积效率试验方法(重力法)

Full-flow lubricating oil filters for internal combustion engines - Methods of test for initial particle retention efficiency, life and cumulative efficiency (gravimetric method)

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标准号

BS 7403-4-1998

发布日期

1998年03月15日

实施日期

1998年03月15日

废止日期

无

中国标准分类号

J94

国际标准分类号

21.260

发布单位

GB-BSI

被代替标准

95/713005 DC-1995 BS 4836-1972

适用范围

This part of ISO 4548 specifies tests for determining the performance of full-flow lubricating oil filters for internal combustion engines as follows. Section 2: Initial particle retention efficiency. This gives the test procedures and parameters for the determination of the initial particle retention efficiency of lubricating oil filter elements under defined test conditions. By reporting the results in accordance with subclause 2.6, the probable retention efficiency for any particle size may be derived. The retention efficiency is determined by the gravimetric method. Section 3: Life and cumulative efficiency. This gives the test procedures and parameters for the determination of element life and cumulative efficiency of lubricating oil filters. The cumulative efficiency is determined by the gravimetric method. NOTE —By agreement between filter manufacturer and purchaser, tests on large filters can be conducted on the basis of tests carried out on filters scaled-down in length. The relationship of the filter flow and test dust addition rate to the effective length of the filter medium should be the same in the scaled-down tests as in the full size filter. For the purposes of this part of ISO 4548, a filter having a test flow rate exceeding 100 l/min is considered large.

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