Methods of test for full-flow lubricating oil filters for internal combustion engines - Part 12: filtration efficiency using particle counting, and contaminant retention capacity (ISO 4548-12:2000, IDT)
This Malaysian Standard specifies a multi-pass filtration test with continuous contaminant injection and using the on-line particle counting method for evaluating the performance of full-flow lubricating oil filters for internal combustion engines.
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 having a rated flow between 4 l/min and 600 l/min and with an efficiency of less than 99% at a particle size greater than 10 m.
NOTE Several test flow loops built in to one test rig, or several test rigs, would be required to cover the complete flow range of 4 l/min to 600 l/min.
