Diesel filters the following tests shall be carried out for diesel filters in accordance with ISO4020 standard (test method for fuel filters for road vehicle-automotive diesel engines).
　　(1) the clearance test of the new filter determines whether the inside of the filter element has cleared the dust and impurities remaining in the production, storage and transportation.
　　(2) bubble test is used to confirm the existence of pores greater than the filtration accuracy of the filter element.
　　(3) filtration efficiency and life test filtration efficiency refers to the determination of the percentage of specific particles being filtered, and the filter life is expressed as the time when the pressure difference of the plugging test is greater than 0.07mpa.
　　(4) determine the percentage of water content in the oil-water mixture separated by the filter through water separation validity test.
　　(5) filter element damage test to determine the anti-breaking pressure of the filter element.
　　(6) oil filter assembly damage test to determine the capacity of the assembly to withstand internal pressure.
　　(7) pulsating pressure fatigue test to determine the mechanical strength of oil filter assembly at pulsating pressure (simulating engine start or stop).
　　(8) vibration fatigue test determines the mechanical strength of the oil filter against vibration under normal operating conditions.
　　This article is organized by dongguan oneness filtration technology co., LTD