지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 이일영
- 발행연도
- 2015
- 저작권
- 부경대학교 논문은 저작권에 의해 보호받습니다.
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초록· 키워드
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In this study, the author studied a high pressure pump used in GDI(Gasoline Direct Injection) engine system focusing on simulation model development. The high pressure pump is a core component in fuel supply systems of GDI engines. Through the study, generation and damping of pressure pulsation in the pump were handled with a great deal of weight.
In chapter 2, operating principle of the high pressure pump was analysed. Then, simulation model of the high pressure pump was developed by using AMESim software.
In chapter 3, volumetric efficiency and pressure pulsation characteristic were investigated through a preliminary experiment with the pump. In addition, effective bulk modulus of the pulsation damper was measured using a newly devised test equipment. And, the damper modeling on AMESim software was suggested based on the results of the preliminary experiments.
In chapter 4, the experimental results in chapter 3 were compared with the simulation results obtained the simulation model in chapter 2 and 3. Through the process, the validity of the simulation model was confirmed.
In chapter 5, The effects of main design parameters such as oil temperature and high pressure chamber volume on the pump performances were investigated by simulations using the verified simulation model.
Consequently, it was confirmed that a reliable simulation model for a high pressure pump in GDI(gasoline direct injection) engine system was developed in this study. The author expects that the simulation model can be utilized to check performance variations depending on design parameters′ change in newly designed high pressure pumps in GDI engines.
In chapter 2, operating principle of the high pressure pump was analysed. Then, simulation model of the high pressure pump was developed by using AMESim software.
In chapter 3, volumetric efficiency and pressure pulsation characteristic were investigated through a preliminary experiment with the pump. In addition, effective bulk modulus of the pulsation damper was measured using a newly devised test equipment. And, the damper modeling on AMESim software was suggested based on the results of the preliminary experiments.
In chapter 4, the experimental results in chapter 3 were compared with the simulation results obtained the simulation model in chapter 2 and 3. Through the process, the validity of the simulation model was confirmed.
In chapter 5, The effects of main design parameters such as oil temperature and high pressure chamber volume on the pump performances were investigated by simulations using the verified simulation model.
Consequently, it was confirmed that a reliable simulation model for a high pressure pump in GDI(gasoline direct injection) engine system was developed in this study. The author expects that the simulation model can be utilized to check performance variations depending on design parameters′ change in newly designed high pressure pumps in GDI engines.
목차
목 차Abstract기호설명제 1 장 서론1.1 연구의 배경1.2 연구의 개요제 2 장 고압 연료 펌프계의 시뮬레이션 모델2.1 고압 연료 펌프계의 구조 및 작동 원리2.2 고압 연료 펌프계의 시뮬레이션 모델 구성제 3 장 고압 연료 펌프의 기초 특성 실험3.1 맥동 댐퍼의 맥동 감쇠 특성 실험3.1.1 고압 연료 펌프계의 맥동원 분석3.1.2 실험 장치 구성3.1.3 압력 맥동 계측 실험 결과3.2 맥동 댐퍼의 유효 체적탄성계수 측정 실험3.2.1 실험 장치 구성3.2.2 측정 실험 방법3.2.3 측정 실험 결과3.3 고압 펌프의 성능 시험3.3.1 실린더 내부 압력 측정 시험3.3.2 용적 효율 측정 시험제 4 장 고압 연료 펌프계의 시뮬레이션 모델 검증4.1 흡입측 압력 맥동 비교4.2 실린더 내부 압력 비교4.3 용적 효율 비교제 5 장 고압 연료 펌프계의 주요 설계 파라미터 고찰5.1 맥동 댐퍼의 유효 체적탄성계수 에 따른 펌프 맥동 특성 325.2 고압 체임버의 체적 요소 변화에 따른 펌프 성능5.2.1 용적 효율 특성5.2.2 고압 펌프의 초기 작동 시간 특성5.3 가솔린의 온도 변화에 따른 펌프 성능5.3.1 가솔린의 온도별 유체 속성5.3.2 온도 조건에 따른 펌프 성능 시뮬레이션제 6 장 결 론참고문헌
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