The control of diesel emissions by supercharging and varying fuel-injection parameters

Noboru Uchida, Yasuhiro Daisho, Takeshi Saito

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

A study has been made of an automotive direct injection diesel engine designed to reduce exhaust emissions, particularly NOx and particulates, without performance deterioration. Special emphasis has been placed on air-fuel mixing conditions controlled by the fuel injection rate, the intake swirl ratio, and the intake boost pressure. By means of increasing the injection rate, ignition delay can be shortened enough to improve particulate emissions at retarded injection timings. Enhancing the intake swirl velocity contributes to the reduction of soot emission in spite of the deterioration of NOx emission. Supercharging can favorably enhance diffusion combustion resulting in improved fuel economy for retarded injection timings and reduced emissions. As a result, a good compromise can be achieved between fuel economy and exhaust emissions by increasing the injection rate along with retarding the injection timing. Supercharging was found to be more favorable than swirl enhancement.

Original languageEnglish
Title of host publicationSAE Technical Papers
DOIs
Publication statusPublished - 1992
EventInternational Congress and Exposition - Detroit, MI
Duration: 1992 Feb 241992 Feb 28

Other

OtherInternational Congress and Exposition
CityDetroit, MI
Period92/2/2492/2/28

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ASJC Scopus subject areas

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering

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