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BS ISO 4548-15:2014 pdf free

BS ISO 4548-15:2014 pdf free.Methods of test for full- flow lubricating oil filters for internal combustion engines
This part of ISO 4548 specifies a method of testing the structural integrity of full-flow lubricating oil filters to withstand engine vibrations. This test is intended for application to spin-on type filters and detachable filters with disposable elements with a maximum flow rate of 100 L/min. Upon agreement between manufacturer and purchaser, this test method can be applied to filters with higher flow rates.
This test method is intended for test parts made from composite materials that experience mechanical property changes within the temperature range experienced in service. The test can be applied to filters with other temperature sensitive materials if thought applicable by agreement between the filter
manufacturer and the purchaser.
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 4548-1, Methods of test for full-flow lubricating oil filters for internal combustion engines一Part 1: Pressure drop/flow characteristics
ISO 1219-1, Fluid power systems and components一Graphical symbols and circuit diagrams一Part 1: Graphical symbols for conventional use and data-processing applications
Lube filtration products are exposed to engine oils and high temperatures as part of their function.The physical properties of composites can be affected by the fluid and temperature interactions. The following optional steps lay out a method to precondition the parts to simulate any reduction in material strength due to exposure to lube system conditions. This preconditioning method can be modified as agreed upon by the filter manufacturer and the purchaser.
Fill the test part with the fluid used in application.
Place the test part in a laboratory oven or thermal chamber and heat to a test temperature and duration agreed upon by the filter manufacturer and purchaser. If no temperature or duration is specified,then heat to 121°C for 250 hours. The default conditions are representative of real world conditions and deemed sufficient to promote material property degradation in sensitive materials. At the end of soaking period and after cooling down to ambient temperature, the oil can be drained to facilitate installation on the vibration stand.
NOTE Lube oil will expand when heated. Precautions will be needed to ensure that the test filter does not fail hydrostatically. This can be achieved by leaving one port open to atmosphere.BS ISO 4548-15 pdf download.

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