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실험계획법을 이용한 GDI연료펌프의 맥동저감을 위한 댐퍼 최적설계
김주영(Juyeong Kim),노진이(Jinyee Noh),이종욱(Jongwook Lee),김경남(Kyungnam Kim),박형종(Hyoungjong Park),황재근(Jaekeun Hwang),이연홍(Yeonhong Lee),윤길호(Gilho Yoon) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
This study optimizes the profile of the diaphragm of a pressure pulsation damper structure in a high-pressure GDI engine system which is now under development by applying the design of experiment (DOE). As a high pressure pulsation ranging from 0 to 10 Bar deteriorates the performance of GDI engine, it is necessary to attenuate the large amplitude of fluid pulsation pressure of Gasoline fuel directly injected into GDI engine. In the development of this pressure damper, it becomes an issue to design optimal profiles of the enveloping diaphragms in terms of pulsation efficiency and mechanical stress for the sake of safety. Thus, this research develops a new finite element procedure considering the internal pressure variation by assuming the isoenthalpy state of the enveloped Helium gas inside the damper and integrates the iterative finite element procedure with the design of experiment (DOE).