COMBUSTION STABILITY OF FOUR-VALVE ENGINE AT LOW SPEEDS

An investigation was made of the degree to which low-speed combustion performance of a four-cylinder engine is improved by throttling one of the two intake ports of the four-valve cylinder head. It was found that such throttling resulted in more rapid flame propagation and less cycle-to-cycle fluctuation, thus improving engine stability. These phenomena were confirmed in a single-cylinder engine equipped with a quartz piston crown, using a high-speed camera. The study further suggested the importance of optimizing fuel spray characteristics of four-valve engines, notably spray angle and atomization.

• 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:
  • Fujii, H
  • Aoyama, S
  • Katoh, M
• Publication Date: 1987-4

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 12-19
• Serial:
  • JSAE Review
  • Volume: 8
  • Issue Number: 2
  • Publisher: Society of Automotive Engineers of Japan
  • ISSN: 0389-4304
  • Serial URL: http://www.sciencedirect.com/science/journal/03894304

Subject/Index Terms

• TRT Terms: Combustion; Engine performance; Engines; Spark ignition engines; Throttles; Traffic speed
• Uncontrolled Terms: Low speed
• Old TRIS Terms: Four cylinder engines
• Subject Areas: Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 00493534
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: HS-040 230
• Files: HSL, TRIS, USDOT
• Created Date: Apr 30 1990 12:00AM