Factors affecting the service life of the oil filter:
Factors affecting the service life of the oil filter
Life characteristics, a new filter element from the beginning of use to clogging, that is, the pressure difference before and after the filter element reaches 70% of the opening pressure of the filter bypass valve (generally, the opening pressure is 100kPa±20kPa). When measuring the filter life on the plugging life test bench, it is necessary to add test impurities to the test oil at a constant speed to simulate the blockage of the filter element under the actual use conditions. During the test, record the pressure difference before and after the filter every 20 or 30 minutes. When the pressure difference reaches 70 kPa, the test is terminated. Ash amount), which is used as an index to evaluate the life of the filter. During the life test, the filtration efficiency of the filter can also be determined regularly, which is called the cumulative filtration efficiency, which represents the filtration efficiency of the filter during the clogging process. Variety. The cumulative efficiency reflects the performance of the filter element more comprehensively than the original efficiency.
The ideal oil filter should match the flow, with low resistance, high filtration efficiency, and long life. In fact, each index is mutually restricted. For example, the greater the flow, the greater the resistance, and the higher the filtration efficiency, the greater the pores of the filter element. The greater the small resistance, the shorter the service life and other disadvantages.