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조인수(Insu Jo),이중협(Junghyup Lee),이진욱(Jinwook Lee) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
The performance of Diesel injector is directly related to the power and emission performance and fuel consumption in a Diesel engine. In this study, it was investigated the dynamic characteristics of Diesel injectors with different driving type for the common rail direct injection by using the AMESim simulation code. The analysis parameter defined such as fuel pressure, injection hole"s diameter and driven voltage. As the results, it was shown that the piezo-driven injector had a faster response and had better control capability than the solenoid-driven injector. It was found the piezo-driven can be utilized effectively as multiple injection than solenoid-driven injector.
승용CRDi용 3세대 피에조 인젝터의 내부 유압 모델링 및 수치검증
조인수(Insu Jo),정명철(Myoungchul Jeong),우세종(Saejong Woo),이진욱(Jinwook Lee) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
Performance of DI diesel engine with high fuel injection method is directly related to its emission characteristics and fuel consumption. In this study, new numerical model is designed to analyze of 3rd generation piezo-driven injector. And the injection response characteristics of CRDi injectors between conventional 3-way piezo and 3rd generation piezo-driven injector was investigated by using the AMESim simulation code. From this study, we found the bypass-circuit inside 3rd generation piezo injector can cause the injection response with the biggest difference of each injector. Also it was shown that 3rd generation piezo-driven injector had a faster response and had better control capability than 3-way piezo-driven injector due to hydraulic bypass-circuit.
CRDi용 고압 인젝터의 구동방식별 동적거동 특성 해석
이중협(Junghyup Lee),조인수(Insu Jo),이진욱(Jinwook Lee) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
In this study, a piezo-driven injector, as a new method driven by piezoelectric energy, has been designed and investigated based on the concept of inverse piezo-electric effect to overcome the major drawbacks of conventional solenoid-driven injector. Specially, it is investigated the dynamic characteristics of Diesel injectors with different driving type for the common rail direct injection by using the AMESim environment. As this research results, we found that the input voltage exerted on piezo stack is the dominant factor and the piezo-driven injector has better performances in controlling the fuel injection with the high pressure than that of a solenoid-driven injector.