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가시화 엔진을 이용한 직분식 디젤엔진내의 유동장 측정에 관한 연구

Title
가시화 엔진을 이용한 직분식 디젤엔진내의 유동장 측정에 관한 연구
Other Titles
An Experimental Study on the Measurement of Flow Field in a Direct Diesel Engine Using a Single Cylinder Visualization Engine
Author
이기형
Issue Date
2006-01
Publisher
한국자동차공학회
Citation
한국자동차공학회논문집, v. 14, No. 1, Page. 129 - 137
Abstract
This paper studies the effects of the swirl for the variation of intake port configuration that is key parameters in the flow field of direct injection diesel engines. In-cylinder flow characteristics is known to have significant effects on air-fuel mixing, combustion, and emissions. To investigate the effects of the swirl flow, various rpm(250, 500, 750) and two different intake port were used. And to evaluate the swirl motion in the flow field visualization engine, steady state flow test was conducted. Helical port intake port and SCV(Swirl Control Valve) were selected as the design parameters to increase the swirl flow and parametric study was performed. In the case of non-SCV, intake flow rate and non-dimensional swirl ratio were higher than those of SCV for the swirl head type. So, we could strengthen the swirl in the flow field with the swirl head type and don't using SCV. From the results of steady state flow test, non-swirl head type has the most good advantage for intake flow rate, and also the flow rate could be increased by using the SCV slightly. The effects of the type of engine head on intake air flow capability are dominant with respect to the existence of the SCV. We could measure the qualitative grade of swirl by capturing the scattering signal of microballoon from ICCD camera in the visualization diesel engine.
URI
http://www.dbpia.co.kr/journal/articleDetail?nodeId=NODE00666189&language=ko_KRhttps://repository.hanyang.ac.kr/handle/20.500.11754/107623
ISSN
1225-6382
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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