Effects of intake oxygen concentration on the characteristics of particulate emissions from a D.I. diesel engine

Norimasa Iida, Yasutoshi Suzuki, G. Takeshi Sato, Takashi Sawada

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

10 Citations (Scopus)

Abstract

The concept of oxygen enriched charging (OEC) was exploratively examined as a means of reducing particulate emissions from a direct injection (DI) diesel engine. A single cylinder DI engine was operated with intake gas oxygen concentrations of 21% to 29%, under a constant engine speed of 40 Hz, and several load conditions. It was found that OEC reduces particulate emissions from a DI diesel engine for all operating conditions tested. Insoluble particulate is especially suppressed by OEC at high load conditions. Oxygen enriched charging has little effect on particulate size distribution at high loads when the mass fraction of extractables is low. Fuel consumption, at constant injection timing, is improved a little by OEC. Emissions of NO x increase exponentially with increasing oxygen concentration. Ignition delay is decreased by OEC and this allows injection timing to be retarded to reduce NOx emissions without increasing the specific fuel consumption.

Original languageEnglish
Title of host publicationSAE Technical Papers
DOIs
Publication statusPublished - 1986
EventInternational Off-Highway and Powerplant Congress and Exposition - Milwaukee, WI, United States
Duration: 1986 Sep 81986 Sep 11

Other

OtherInternational Off-Highway and Powerplant Congress and Exposition
CountryUnited States
CityMilwaukee, WI
Period86/9/886/9/11

ASJC Scopus subject areas

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

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