A description of the main features and current status of the CDI, Controlled Direct Injection System, is given. A 2.5 liter turbocharged CDI engine is compared with its production IDI equivalent by means of vehicle tests. The vehicles, identical saloon cars, were compared on as-installed basis and, as nearly as possible, on an equal performance basis. Results are presented covering fuel consumption and emissions with European and U.S. fuels over a number of different driving cycles. Drive-by, idle and internal noise levels were recorded. Starting tests were carried out to compare starting, smoke at start and cold idle. An analysis of the cost differences between the CDI and its IDI equivalent is presented.

  • Supplemental Notes:
    • Twentieth FISITA Congress, (SAE P-143), The Automotive Future, Volume 2, Austria, 6-11 May 1984.
  • Corporate Authors:

    Society of Automotive Engineers (SAE)

    400 Commonwealth Drive
    Warrendale, PA  United States  15096
  • Authors:
    • Monaghan, M L
  • Publication Date: 1984-5

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00392483
  • Record Type: Publication
  • Source Agency: National Highway Traffic Safety Administration
  • Report/Paper Numbers: SAE 845040, HS-037 439
  • Files: HSL, USDOT
  • Created Date: Feb 28 1985 12:00AM