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3-way형과 Bypass형 서보유압 피에조 인젝터의 구동특성 비교
- Issue Date
- 2013
- Publisher
- 한국자동차공학회
- Keywords
- Bypass-circuit(바이패스 회로); Piezo-driven injector(피에조 인젝터); CRDi(커먼레일 직접분사); Piezo indirect acting system(피에조 간접 작동시스템); Internal hydraulic modeling(내부 유압 모델링); Inverse piezo-electric effect(역압전효과); AMESim simulation code(AMESim 해석코드)
- Citation
- 한국자동차공학회 논문집, v.21, no.5, pp.169 - 175
- Journal Title
- 한국자동차공학회 논문집
- Volume
- 21
- Number
- 5
- Start Page
- 169
- End Page
- 175
- ISSN
- 1225-6382
- Abstract
- CRDi technology of diesel engine was developed from in the early 2000s due to a need to increase fuel efficiency and environment care. Especially, high-pressure fuel injection system in CRDi system which has a fuel injection unit including an injector, a fuel pump and common-rail, etc. becomes possible to make the exhaust gas clean as well as power improvement. In this study, comparison of dynamic characteristics of servo-hydraulic piezo-driven injector with 3-way and bypass-circuit type was analyzed by using the AMESim code. As results of this study, it found the bypass-circuit inside servo-hydraulic piezo injector can cause a faster injection response than that of the 3-way type. Also it was shown that bypass-circuit type had better control capability due to hydraulic bypass system.
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Related Researcher
- Lee, Jin wook
- College of Engineering (School of Mechanical Engineering)