1 Scope
This standard specifies the performance test methods of petrol filter assembly for automobiles (hereinafter referred to as filter) to make the laboratory performance test results comparable.
This standard is applicable to the filter with the rated volume flow below 3.5L/min (210L/h) of petrol engine for automobiles.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 338 Methanol for Industrial Use
GB 10327 Reference Fuel Specification for Diesel Engine Performance Test
GB 11122 Diesel Engine Oils
GB 17930 Unleaded Petrol (Gasoline) for Motor Vehicles
GB 18350 Denatured Fuel Ethanol
ISO 12103-1: 1997 Road Vehicles - Test Dust for Filter Evaluation - Part 1:Arizona Test Dust
3 Terms and Definitions
3.1
rated volume flow
nominal volume flow of filter specified by the user or the manufacturer to match a certain kind of petrol engine under specified test conditions, expressed in L/min.
3.2
initial restriction
pressure drop of filter equipped with new filter element at rated volume flow, expressed in kPa.
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3.3
pressure drop
difference in static pressure measured at specified pressure measurement points on upstream and downstream of filter where the test is carried out by the established procedures, expressed in kPa.
Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 Test Materials
5 Test Methods
Annex A (Normative) Test Equipment (Device) as well as Apparatus, Instrument and Appliance
Annex B (Normative) Analysis Method of Impurities in Oil Sample for Filtration Efficiency and Dust Holding Capacity Test
Annex C (Normative) Test Dust
