EFFECT OF FUEL INJECTION PRESSURE ON DIESEL ENGINE PERFORMANCE

In order to reduce exhaust emissions and fuel consumption, high-pressure injection tests were conducted from two aspects: spray observation and single-cylinder testing. In-cylinder spray promotes mixing through impingement on the cavity wall. Reduction of the nozzle area is effective in causing increased impingement on the wall, though it is desirable to limit the reduction so that the injection period is kept within an appropriate range (about 25 deg of crank angle). Higher pressure through an increase in the geometric injection rate and reduction of the nozzle area, greatly reduces exhaust smoke and fuel consumption in the low to medium speed ranges. The combination of high-pressure injection and pilot injection is an effective way to achieve overall reduction of NOx, exhaust smoke, fuel consumption and combustion noise.

  • Supplemental Notes:
    • Text in Japanese. Included in Mitsubishi Motors Technical Review, n2 p46-56 1989.
  • Authors:
    • Shimada, T
    • Shoji, T
    • Yamada, K
  • Publication Date: 1989

Language

  • Japanese

Media Info

  • Pagination: 11 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00619620
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Files: TRIS
  • Created Date: Feb 29 1992 12:00AM