This paper summarizes octane number requirement trends of U.S. cars from 1971 through 1979, a period during which automakers strove to meet increasingly stringent fuel economy and exhaust emissions standards. It is based upon the annual nationwide surveys conducted by the Coordinating Research Council of current model domestic and imported light-duty vehicles sold in the United States. The maximum octane number requirement of the average 1971 model car was about 92 Research octane number (RON). After an initial drop of 3 units in the 1972 model year, average requirements increased throughout the remainder of the nine-year period to a level of 92 RON in 1979. Incidence of car owners reporting objectionable knock on the fuel they were using held at about 5% until 1975 when 10% objected. This number peaked at 20 percent in 1976 and then remained above 10 percent through 1979.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Octane Number Requirement Trends of U.S. Passenger Cars, 1971-1979


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    1980 SAE International Fall Fuels and Lubricants Meeting and Exhibition ; 1980



    Publication date :

    1980-10-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Octane Number Requirement Trends US Passenger Cars 1971-1979

    Barnard,D.P. / Gorham,M.J. / Rogers,J.D. et al. | Automotive engineering | 1980


    Octane Number Requirement Trends-Passenger Cars In U.S., 1965-1974

    Barnard, D. P. / Rogers, J. D. / Wascher, W. L. | SAE Technical Papers | 1975


    Octane number requirement trends - passenger cars in US, 1965-1974.

    Barnard,D.P. / Rogers,J.D. / Wascher,W.L. et al. | Automotive engineering | 1975


    Octane number requirement survey 1959 - 1975 japanese passenger cars

    Nakajima,K. / Nippon Oil,JP | Automotive engineering | 1977