GM MICRO-COMPUTER ENGINE CONTROL SYSTEM

The General Motors microprocessor based Computer Controlled Catalytic Converter (C-4) system used on 1980 California vehicles and nationwide in 1981 is described. The basic system function is to maintain engine exhaust air-fuel ratio control so that oxidation and reduction characteristics of three-way catalytic converters can be effectively utilized. Control strategies and components used in the Closed Loop Carburetor Control function are reviewed.

• Supplemental Notes:
  • Also available from the National Highway Traffic Safety Administration in HS-031 180 (SAE-SP-477), "Implementation of Engine Control Strategies with Electronics," Warrendale, Pennsylvania, 1980, pp 45-60. Presented at SAE Congress and Exposition, Detroit, February 1980.
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Grimm, R A
  • Bremer, R J
  • Stonestreet, S P
• Publication Date: 1980

Media Info

• Features: References;
• Pagination: 18 p.
• Serial:
  • Society of Automotive Engineers Preprint
  • Publisher: Society of Automotive Engineers (SAE)

Subject/Index Terms

• TRT Terms: Air quality management; Applications; Carburetors; Catalytic converters; Control; Exhaust gases; Feedback control; Fuel air mixtures; Loops (Control systems); Microprocessors; Sensors; Vehicle power plants
• Uncontrolled Terms: Air fuel ratio
• Old TRIS Terms: Automobile engines; Computers (Microprocessor); Exhaust emission control; Strategy
• Subject Areas: Highways; Research; Vehicles and Equipment;

Filing Info

• Accession Number: 00322895
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: SAE 800053, HS-031 183
• Files: HSL, TRIS
• Created Date: Jan 19 1983 12:00AM