ENGINE CONTROL BY AN ON-BOARD COMPUTER

A spark ignited internal combustion engine with computer controlled spark and exhaust gas recirculation has been operated over the CVS test cycle. At the 1975 emission level, a 10-20% improvement in fuel economy on the test vehicle over the initial production 1975 California vehicle was measured. Comparable driveability, octane, emission levels, and performance were obtained. The initial calibration for the control of spark and EGR was developed from engine dynamoeter testing/ computer simulations allowed for calibration development prior to vehicle implementation. Cost effectiveness questions have not been resolved. /GMRL/

• Supplemental Notes:
  • From Automotive Electronics II, pp 75-77, 1975.
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Moyer, D F
  • Mangrulkar, S M
• Publication Date: 1975

Media Info

• Pagination: 2 p.

Subject/Index Terms

• TRT Terms: Automotive engineering; Dynamometers; Exhaust gases; Fuel consumption; Internal combustion engines; Pollutants; Simulation; Spark ignition engines; Vehicle performance
• Old TRIS Terms: Emission rates; Recirculation
• Subject Areas: Energy; Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00127189
• Record Type: Publication
• Report/Paper Numbers: SAE #750433
• Files: TRIS
• Created Date: Jan 14 1976 12:00AM