The objective of the work described in this paper was to compare the cold weather starting ability of diesel engines lubricated with SAE 15W-40 Petroleum and SAE 5W-30 Synthetic motor oil. Laboratory bench tests were used to compare rhelogical features such as borderline pumping temperature and cold cranking simulator profiles. A cold box provided a well controlled environment in which cranking and starting studies were carried out on the two oils in a turbocharged diesel engine. The SAE 5W-30 Synthetic exhibited higher cranking speeds, lower starter amperage draw and immediate oil pressure readings when compared to the SAE 15W-40 Petroleum. The SAE 5W-30 Synthetic oil was safely started at -10°F oil temperature without auxiliary heaters. The comparative field studies were carried out on six cyclinder turbocharged diesel engines representing conditions commonly found in the commercial and off-highway sectors. Basically these studies indicated that combining high capacity cold cranking amperage batteries, high pressure ether aid injection, and SAE 5W-30 Synthetic oil resulted in a system that safely starts diesel engines down to actual oil temperatures of at least -10°F.


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    Titel :

    Cold Starting Capabilities of Petroleum and Synthetic Lubricants in Heavy-Duty Diesel Engines


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    40th Annual Earthmoving Industry Conference ; 1989



    Erscheinungsdatum :

    01.04.1989




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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