In order to significantly reduce NOx levels by EGR (exhaust gas recirculation), while maintaining good fuel economy and driveability, the EGR flow rate must be properly and accurately controlled under a variety of engine operating conditions. Toward this objective, a new EGR control system was developed. It utilizes a carburetor venturi vacuum for a stable reference signal that represents the engine operating condition and it controls the EGR flow rate by using a feedback principle to obtain sufficient flexibility compatible with several different engines.

  • Supplemental Notes:
    • From SAE Meeting held Juen 9-13, 1980.
  • Corporate Authors:

    Society of Automotive Engineers (SAE)

    400 Commonwealth Drive
    Warrendale, PA  United States  15096
  • Authors:
    • Aoyama, S
    • HAYASHI, Y
  • Publication Date: 1980

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00331771
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: SAE 800824
  • Files: TRIS
  • Created Date: Jul 9 1981 12:00AM