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Effects of the swirl ratio and injector hole number on the combustion and emission characteristics of a light duty diesel engine

Title
Effects of the swirl ratio and injector hole number on the combustion and emission characteristics of a light duty diesel engine
Author
박성욱
Keywords
Swirl ratio; Injector hole number; Single cylinder diesel engine; Light-duty diesel engine
Issue Date
2018-06
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
APPLIED THERMAL ENGINEERING, v. 142, page. 68-78
Abstract
In this study, the effects of swirl and the injector hole number were investigated to enhance the mixing of fuel and air. Both experimental and analytical methods were employed. The KIVA code coupled with the CHEMKIN chemistry solver was used to analyze the swirl intensity at various angles of the swirl control valve and experimental results. For the experimental investigation, a 498.75 cc single cylinder engine and a 55 kW AC dynamometer were employed. The experiments were conducted at IMEP values of 6 and 10 bar with 7, 8, 9, and 10 hole injectors. The swirl intensity was varied by opening of the swirl control valve from 0 degrees to 90 degrees.The experimental results demonstrated that the swirl intensity has an effect on the combustion and emission characteristics. An enhanced swirl intensity reduced the PM and CO emissions but increased the NOx emissions and ISFC. An increase of the injector hole number resulted in decreases of the PM and CO emissions along with a an increase of NOx emissions and no significant difference of output. However, the exhaust characteristics with the 10 hole injector deteriorated as the interference increased.
URI
https://www.sciencedirect.com/science/article/abs/pii/S135943111831528X?via%3Dihubhttp://repository.hanyang.ac.kr/handle/20.500.11754/118954
ISSN
1359-4311
DOI
10.1016/j.applthermaleng.2018.06.076
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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