INLET DYNAMIC PRESSURE AND VOLUMETRIC EFFICIENCY OF FOUR CYLINDER FUEL INJECTED ENGINE WITH AIR-SURGE-TANK

Volumetric efficiency and inlet pressure vibration of a four cylinder engine with air-surge-tank was investigated. It was found that the inlet pressure vibration in the induction system consists of two main waves, which can be distinguished clearly and explained by acoustic theory. One has a short period which is determined by factors of the induction system from the air purge-tank to the intake valve, the other has a relatively long period which is determined by overall design factors of the induction system. According to the numerical calculation, it was clarified that the volumetric efficiency is strongly influenced by the pressure in the short period before the intake valve closed. Therefore, how the design factors of the induction system are affecting the volumetric efficiency of the four cylinder engine with air-surge-tank can be shown by the following procedure. First, the mean pressure of two main waves in the short period before the intake valve closed are examined. It the pressure is positive value, the volumetric efficiency is improved by the wave. Second, the relation between the design factors and these waves is calculated by using acoustic theory.

• 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:
  • Ohata, A
  • Ishida, Y
• Publication Date: 1981-11

Media Info

• Features: Figures;
• Pagination: p. 9-17
• Serial:
  • JSAE Review
  • Issue Number: 6
  • Publisher: Society of Automotive Engineers of Japan
  • ISSN: 0389-4304
  • Serial URL: http://www.sciencedirect.com/science/journal/03894304

Subject/Index Terms

• TRT Terms: Culvert inlets; Design; Economic efficiency; Engines; Fuel injection; Pressure
• Uncontrolled Terms: Efficiency; Inlets
• Subject Areas: Design; Economics; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00362374
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: HS-032 809
• Files: HSL, USDOT
• Created Date: Jul 30 1982 12:00AM