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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국자동차공학회 International journal of automotive technology International journal of automotive technology Vol.3 No.1
- 발행연도
- 2002.3
- 수록면
- 17 - 25 (9page)
이용수
초록· 키워드
오류제보하기
The authors have reported significant reductions in particulate emissions of diesel engines by generating strong turbulence during the combustion process. This study aims to identify optimum conditions of turbulent mixing for effective soot reduction during combustion. The experiments were conducted with a constant volume combustion vessel equipped with a jet-generating cell, in which a small amount of fuel is injected during the combustion of the main spray. The jet of burned gas from the cell impinges the main flame, causing changes in the mixing of fuel and air. Observation
was made for a variety combinations of distances between spray nozzle and jet orifice at different directions of
impingement. It is shown that compared with the case without jet flame soot decreases when the jet impinges. When the jet is very close to the flame, it penetrates the soot cloud and causes little mixing. There were no apparent differences in the combustion duration when the direction of impingement was varied, although the mechanisms of soot reduction seemed different. An analysis of local turbulent flows with PIV (Particle Image Velocimetry) showed the relationship between the scale of the turbulence and the size of the soot cloud.
was made for a variety combinations of distances between spray nozzle and jet orifice at different directions of
impingement. It is shown that compared with the case without jet flame soot decreases when the jet impinges. When the jet is very close to the flame, it penetrates the soot cloud and causes little mixing. There were no apparent differences in the combustion duration when the direction of impingement was varied, although the mechanisms of soot reduction seemed different. An analysis of local turbulent flows with PIV (Particle Image Velocimetry) showed the relationship between the scale of the turbulence and the size of the soot cloud.
목차
ABSTRACT
1.INTRODUCTION
2.EXPERIMENTAL APPARATUS AND PROCEDURES
3.EXPERIMENTAL RESULTS AND DISCUSSION
4.LOCAL STRUCTURE OF FLAME AND TURBULENT FLOW
5.CONCLUSIONS
REFERENCES
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