Published: Jan 1957
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Qualification bench testing methods and requirements of a proposed military specification for Navy standard large full-flow lubricating oil filters are described. Typical test results with several brands of elements for flow rate pressure drop, filtering ability, resistance to shock, media migration, and differential pressure tests are presented. Failures observed with some elements during different tests are discussed and illustrated. A limited amount of data obtained during tests of a submarine engine and a high-speed diesel engine showed that full-flow filters provided good protection; high wear rates of some engine parts were reduced to satisfactory values. Under average engine conditions, element “life” is estimated to be 500 hr, or more.
Earle, Sherod L.
Mechanical Engineer, Head, Small Diesel Engine, U. S. Naval Engineering Experiment Station, Annapolis, Md.