This program was an experimental effort to evaluate several methods of reducing the octane requirement of a 350 CID Chevrolet engine (1975 California model). Increased squish and two spark plugs per cylinder did not provide the expected gains in this particular application. Aluminum heads and a knock-actuated spark control system were identified as potential methods of reducing octane requirement. The spark control system was incorporated into a vehicle emission control system to enable the use of higher compression ratio heads without substantial losses in emission control and with a gain in fuel economy.

  • Corporate Authors:

    Exxon Research and Engineering Company

    Products Research, US Highway #1 and Park Avenue
    Linden, NJ  United States  07036

    Environmental Protection Agency

    Emission Control Technology Division, 2565 Plymounth Road
    Ann Arbor, MI  United States  48105
  • Authors:
    • Godici, P E
    • Kraus, B J
  • Publication Date: 1978-10

Media Info

  • Pagination: 624 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00191288
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: EPA/460/3-78/009
  • Contract Numbers: EPA-68-03-2162
  • Files: TRIS
  • Created Date: May 11 1979 12:00AM