This paper briefly reviews the progress in reducing emissions over the past eight years through improved piston ring designs and compatible facings. The newer emissions control laws for 1976 require considerable further work in reducing emissions from every possible source.The authors discuss the green engine effect and suggest the use of reduced-friction piston rings to yield assembly-line emissions test results more nearly representative of the emissions from an engine after extended break-in running.To reduce oil contamination for the purpose of conserving natural resources by extending oil change intervals and also to reduce emissions, the writers propose the use of zero blowby piston rings and discuss a novel design.New piston ring facings may also play a part in improving durability and compatibility when ashless oils are specified and when the piston rings must be mounted at the top of the piston.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    New Piston Ring Innovations to Help Control Automotive Engine Emissions


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    1973 International Automotive Engineering Congress and Exposition ; 1973



    Publication date :

    1973-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Advanced Automotive Piston Engine Program

    Brogan,J.J. / United States Dep.of Energy,US | Automotive engineering | 1995


    Designing an Automotive Engine Piston

    Winship, James W. | SAE Technical Papers | 1967


    Advanced Automotive Piston Engine Program

    Brogan, J. J. / SAE / United States; Department of Energy; Office of Transportation Technologies | British Library Conference Proceedings | 1995


    Advanced Automotive Piston Engine Program ( AAPEP )

    Brogan,J.J. / Department of Energy,US | Automotive engineering | 1994


    THE AUTOMOTIVE FREE-PISTON-TURBINE ENGINE

    Egli, Adolph / Frey, Donald N. / Klotsch, Paul | SAE Technical Papers | 1957