Journal of Advanced Marine Engineering and Technology
- Volume 25 Issue 4
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- Pages.912-919
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- 2001
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- 2234-7925(pISSN)
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- 2234-8352(eISSN)
Spray Characteristics of the Air-Shrouded Injectors
공기쉬라우드형 인젝터의 분무 특성 연구
Abstract
Improvement of the atomization characteristics by adopting the air-shrouded injector has been considered as one of the important methods for decreasing HC emissions in SI engines. Thus, in this study to develop air-shrouded injector with a finer spray, atomization characteristics of differ-ent types of commercial air-shrouded injectors were investigated through the spray imaging and the drop size measurements. As a results, it was found that the internal mixing type of air-shroud-ed injector had a good atomization characteristics. But, a number of large droplets were found in the internal mixing type commercial injector, this shortcoming was improved by adopting the thread type air passages in the air nozzle.