Development of the Sequence VIB dynamometer engine test procedure for evaluating the fuel efficiency benefits of engine oils has recently been completed. This test was designed as an improvement over its predecessor, the Sequence VIA test. It evaluates fuel economy using a range of boundary/mixed and hydrodynamic lubrication stages selected to better represent a wider range of engines. In addition to determining “fresh oil” fuel economy, the new test determines fuel efficiency retention after a second oil aging stage that corresponds to 6437 - 9674 km (4,000 - 6,000 miles) of pre-certification aging of engine oils in vehicles and is representative of customer use. This paper describes the selection of aging conditions and length.


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    Title :

    Sequence VIB Engine Test for Evaluation of Fuel Efficiency of Engine Oils - Part I. Aging Procedure for Determination of Fuel Efficiency Retention


    Additional title:

    Sae Technical Papers



    Conference:

    International Fall Fuels and Lubricants Meeting and Exposition ; 1998



    Publication date :

    1998-10-19




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Sequence VIB Engine Test for Evaluation of Fuel Efficiency of Engine Oils - Part I: Aging Procedure for Determination of Fuel Efficiency Retention

    Johnson, M. D. / McCollum, C. B. / Korcek, S. et al. | British Library Conference Proceedings | 1998



    Retention of fuel efficiency of engine oils

    Korcek,S. / Johnson,M.D. / Jensen,R.K. et al. | Automotive engineering | 1998



    Sequence VIB Engine Test for Evaluation of Fuel Efficiency of Engine Oils - Part II. Stage Selection and Time Factor Determination

    McCollum, Clarence B. / Sorab, Jagadish / Schriewer, Kurt W. et al. | SAE Technical Papers | 1998