Tests show that combustion chamber, intake valve, and particularly intake port deposits have a beneficial effect on fuel economy; that is, physically removing these deposits from test engines increased fuel consumption by a up to 9%. The tests also show that an engine's octane requirement can be reduced by deposit buildup. Reasons behind these conclusions are not completely clear. Results from this testing also indicate that engine designs which are highly dependent on mixture swirl (Ford PROCO and May Fireball engines) may have their performance affected by buildup of ridge deposits in intake ports. The overall effect of deposits on OR and fuel economy is shown.

Media Info

  • Pagination: p. 43-47
  • Serial:
    • Automotive Engineering
    • Volume: 87
    • Issue Number: 10
    • Publisher: Society of Automotive Engineers (SAE)
    • ISSN: 0098-2571

Subject/Index Terms

Filing Info

  • Accession Number: 00324989
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: May 21 1981 12:00AM