ANALYSIS OF COMBUSTION PATTERNS EFFECTIVE IN IMPROVING ANTI-KNOCK PERFORMANCE OF A SPARK IGNITION ENGINE

Measures to improve specific fuel consumption of a spark-ignition engine have been taken by improving indicated thermal efficiency and reducing engine friction loss. In this work higher compression ratios have been used as a means of improving thermal efficiency and so improve specific fuel consumption. Higher compression ratios result in the phenomenon of knocking under full load and is studied in the article. The studies described evaluated the mechanism of knocking, and its relationship with combustion pattern, using a knocking-prediction mathematical model. The purpose of the study involved a need to control the knocking caused by a higher compression ratio, by means of modifying the pressure rise during combustion. (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/6664983
• Corporate Authors:

  Society of Automotive Engineers of Japan

  10-2 Goban-cho, Chiyoda-ku
  Tokyo,   Japan 
• Authors:
  • NAKAJIMA, Y
  • NAGAI, T
  • Iijima, T
  • Yokoyama, J
  • Nakamura, K
• Publication Date: 1984-3

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 9-17
• Serial:
  • JSAE Review
  • Issue Number: 13
  • Publisher: Society of Automotive Engineers of Japan
  • ISSN: 0389-4304
  • Serial URL: http://www.sciencedirect.com/science/journal/03894304

Subject/Index Terms

• TRT Terms: Antiknock compounds; Combustion; Compression; Economic efficiency; Engine knock; Engine performance; Engines; Forecasting; Friction losses; Fuel consumption; Improvements; Mathematical analysis; Mathematical models; Pressure; Spark ignition engines; Thermal efficiency
• Uncontrolled Terms: Efficiency; Models; Modifications
• Old TRIS Terms: Compression ratio
• ITRD Terms: 6471: Analysis (math); 3860: Combustion; 5911: Efficiency; 232: Fuel consumption; 9108: Improvement; 6473: Mathematical model; 9048: Modification; 1334: Motor; 5412: Pressure
• Subject Areas: Economics; Energy; Highways; Vehicles and Equipment; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 00387160
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Report/Paper Numbers: HS-037 955
• Files: HSL, ITRD, TRIS
• Created Date: Aug 30 1985 12:00AM