REDUCTION OF SMOKE AND NITROGEN OXIDE EMISSIONS BY ACTIVE TURBULENCE GENERATED IN THE LATE COMBUSTION STAGE IN D. I. DIESEL ENGINES

The purpose of this study is to develop a practical technique to simultaneously reduce both smoke and nitrogen oxide gases emitted from diesel engines. Experiments were undertaken to generate strong turbulences late in the combustion stage and thus enhance smoke oxidation without disturbing the initial combustion period where nitrogen oxide formation is dominant. This turbulence was generated by jets of burned gas from an auxiliary chamber installed in a direct injection diesel engine. To reduce nitrogen oxide, exhaust gas recirculation was used in combination with the strong turbulence in the combustion chamber at a slightly retarded fuel injection timing. Aside from improving the engine's thermal efficiency at full loads, the technique served to simultaneously reduce nitrogen oxide slightly and eliminate smoke significantly.

Media Info

  • Features: References;
  • Pagination: 14p.

Subject/Index Terms

Filing Info

  • Accession Number: 00660639
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM