POTENTIAL OF SPARK IGNITION ENGINE FOR INCREASED FUEL EFFICIENCY

The objective of this study was to assess the potential of the spark ignition engine to deliver maximum fuel efficiency at 1981 Statutory Emission Standards in the 1983-1984 timeframe and beyond that to 1990. Based on the results of an extensive literature search, manufacturer's known product plans, and fuel economies of 1978 engines as a baseline, proposed methods of attaining fuel economy while complying with the future standards were ascertained. Methods of engine control optimization, engine design optimization as well as methods of varying engine parameters were considered. The potential improvements in fuel economy associated with these methods, singly and in combination, were determined and are expressed as percentage changes of the fuel economy of the baseline engines. A summary of the principal conclusions are presented, followed by a description of the engine baseline reference, analysis and projection of fuel economy improvements, and a preliminary assessment of the impact of fuel economy benefits on manufacturing cost.

  • Corporate Authors:

    Corporate-Tech Planning, Incorporated

    275 Wyman Street
    Waltham, MA  USA  02154

    National Highway Traffic Safety Administration

    1200 New Jersey Avenue, SE
    Washington, DC  USA  20590
  • Authors:
    • Taylor Jr, T
    • COLE, D
    • Bolt, J A
  • Publication Date: 1980-10

Media Info

  • Features: References;
  • Pagination: 89 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00329064
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: Final Rpt., HS-805 717
  • Contract Numbers: DOT-HS-7-01789
  • Files: HSL, NTIS, TRIS, USDOT
  • Created Date: May 21 1982 12:00AM