REDUCTION OF SOOT EMISSION BY HIGH-PRESSURE FUEL INJECTION OF DIRECT-INJECTION DIESEL ENGINES

VERMINDERUNG DER RUSSBEMISSION DIREKTEINSPRITZENDER FAHRZEUG- DIESELMOTOREN DURCH KRAFTSTOFF- HOCHDRUCKEINSPRITZUNG

The increase of the fuel pressure at the injection nozzle of direct-injection vehicle diesel engines leads to an improvement of mixture formation and of the combustion process. High-frequency photographs according to Toepler's Schlieren method and basic analyses at a single-cylinder engine proved that the use of an injection system with about three times higher injection pressure than with conventional systems can reduce soot emission and the emission of unburned hydrocarbons. Nitric oxide emission and specific fuel consumption were not yet influenced considerably by this mixture formation measure. A drawback still watched is the increase of the combustion noise. With a careful optimization of injection rate, swirl intensity and the shape of the combustion chamber further improvement can be accomplished. (Author/TRRL)

• Supplemental Notes:
  • Proceedings of the 19th International Fisita Congress, Melbourne, November 8-12, 1982.
• Corporate Authors:

  Society of Automotive Engineers

  191 Royal Parade
  Parkville, Victoria 3052,   Australia 
• Authors:
  • Prescher, K
• Publication Date: 1982-11

Language

• German

Media Info

• Features: Figures;
• Pagination: p. 23.1
• Serial:
  • Publication of: Society of Automotive Engineers (Australasia)
  • Publisher: Society of Automotive Engineers

Subject/Index Terms

• TRT Terms: Combustion; Conferences; Diesel engines; Exhaust gases; Fly ash; Fuel injection; Hydrocarbons; Mixtures; Pressure
• Uncontrolled Terms: Decreases; Soot
• ITRD Terms: 3860: Combustion; 8525: Conference; 9009: Decrease; 1314: Diesel engine; 2442: Emission; 7367: Hydrocarbon; 3830: Injection (fuel); 9047: Mixture; 5412: Pressure
• Subject Areas: Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 00376148
• Record Type: Publication
• Source Agency: ARRB
• Report/Paper Numbers: SAEA 82023
• Files: ITRD, TRIS, ATRI
• Created Date: Jul 30 1983 12:00AM