PERFORMANCE AND EMISSION PREDICTIONS OF A MULTI-CYLINDER SPARK IGNITION ENGINE WITH EXHAUST GAS RECIRCULATION

A theoretical and experimental study was made of a four-cylinder, four-stroke, spark ignition engine equipped with exhaust gas recirculation (EGR) for reduced nitric oxide (NO) emission. Computer simulation of the system, including intake and exhaust manifolds, was compared with experiments. The tests were conducted at various EGR openings at constant engine speed and wide open carburetor throttle; the computation was limited to zero, half, and full EGR valve openings. Pressures and exhaust emissions of NO, carbon monoxide (CO), carbon dioxide, and hydrocarbons were measured at various locations. It was found that NO emission can be reduced up to 50% at the peak NO condition without any significant effect on CO concentration and with a 10% loss in engine power. In spite of simplified assumptions, agreement between prediction and measurement was good. The simulation program is promising as a tool for engine development work, allowing prediction of engine performance and emission under any steady-state condition. The major shortcoming of the computer program at this time is the simplified approach to air/fuel homogeneity in the inlet manifold and the CO concentration calculation. An outline of the simulation model calculations and some recent results are appended.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Supplemental Notes:
  • Presented at SAE Passenger Car Meeting, Troy, Michigan, 5-9 June 1978. Research sponsored by the Science Research Council (U.K.).
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Baruah, P C
  • Benson, R S
  • Balouch, S K
• Publication Date: 1978

Media Info

• Features: References;
• Pagination: 19 p.
• Serial:
  • SAE Technical Paper
  • Publisher: Society of Automotive Engineers (SAE)
  • ISSN: 0148-7191
  • EISSN: 2688-3627
  • Serial URL: http://papers.sae.org/

Subject/Index Terms

• TRT Terms: Carbon dioxide; Carbon monoxide; Engine performance; Exhaust gas recirculation; Exhaust gases; Forecasting; Hydrocarbons; Measurement; Nitric oxide; Nitrogen oxides; Simulation; Spark ignition engines
• Subject Areas: Safety and Human Factors;

Filing Info

• Accession Number: 00396891
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: SAE 780663, HS-025 553U
• Contract Numbers: B/RG/3876
• Files: HSL, USDOT
• Created Date: Aug 31 1985 12:00AM