MICROPROCESSOR CONTROL BRINGS ABOUT BETTER FUEL ECONOMY WITH GOOD DRIVABILITY

A microcomputer control system for managing the automotive engine's air-fuel ratio, spark ignition timing, exhaust gas recirculation and idle speed has been developed and is marketed in Japan under the name of ECCS. Fuel economy has been improved by 10% while good driveability has been maintained. This paper outlines ECCS and describes how control factors in a "steady state" are determined. It also discusses the control sequence in transient conditions, such as "cold" starts, "hot" restarts, clutch engagement, acceleration, deceleration, gearshifts and the "warm-up" process.

• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Ikevra, K
  • HOSAKA, A
  • Yano, T
• Publication Date: 1980-2-29

Media Info

• Pagination: 14 p.

Subject/Index Terms

• TRT Terms: Exhaust gases; Fuel air mixtures; Fuel consumption; Microprocessors; Spark ignition engines
• Uncontrolled Terms: Air fuel ratio
• Subject Areas: Energy; Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 00315100
• Record Type: Publication
• Report/Paper Numbers: SAE 800056
• Files: TRIS
• Created Date: Oct 8 1980 12:00AM