Methods of test for full-flow lubricating oil filters for internal combustion engines -- Filtration efficiency using particle counting and contaminant retention capacity
This document specifies a multi-pass filtration test with continuous contaminant injection and using the online particle counting method for evaluating the performance of full-flow lubricating oil filters for internal combustion engines. The scope of this document is limited to steady state conditions and does not address fluctuations in the flow rate.
The test procedure determines the contaminant capacity of a filter, its particulate removal characteristics and differential pressure.
This test is intended for application to filter elements with an efficiency of less than 99Â % at particle size greater than 10Â ÎĽm.
NOTE Several test flow loops built into one test rig, or several test rigs, would be necessary to cover the complete flow range of 2Â l/min to 600Â l/min.
| SDO | BSI: British Standards Institution |
| Document Number | ISO 4548-12 |
| Publication Date | July 11, 2017 |
| Language | en - English |
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| Committee | MCE/14 |