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가변 흡기매니폴드용 플라스틱 부품의 피로강도에 관한 연구
나찬가람(Chankaram Na),김형욱(Hyungwook Kim),김민기(Minki Kim),박정주(Jeongjoo Park),김민섭(Minseop Kim) 한국자동차공학회 2018 한국자동차공학회 학술대회 및 전시회 Vol.2018 No.11
Even though the era of electric vehicle has come, the needs for more economical and eco- friendly internal combustion engine have been higher. Various kinds of powertrain technologies have been applied to enhance the engine performance. Among the technologies, intake manifold is one of the key parts to influence the engine performance. This study will mainly review the development process and the result of intake manifold part focused on fatigue of the plastic part. CAE simulation and experiments were implemented to evaluate design validity. Fatigue strength of the plastic part, as well as conventional structural strength, should be taken into consideration when it comes to designing a part under repeated loads.
다구찌기법을 이용한 이젝터 유량 최적화에 관한 실험적 연구
나찬가람(Chankaram Na),김동준(Dongjun Kim),이종환(Jonghwan Lee) 한국자동차공학회 2020 한국자동차공학회 학술대회 및 전시회 Vol.2020 No.11
In gasoline turbo engines, turbocharger’s boost pressure makes it increasingly difficult to recirculate evaporation gas. Although the ejector can be used to recirculate the evaporation gas under boost pressure conditions, it is still difficult to recirculate the evaporation gas due to the low flow rate at the low system pressure. In order to solve the above problems, an experimental study was performed to increase the flow rate using Taguchi method. Optimal parameters for each design factor could be derived and flow rate increase of optimal specification could be confirmed through verification experiment. This study hopes to be used as a guideline to refer to the influence on the flow rate of each design factor in ejector design.
PCV결빙 방지 플라스틱 흡기매니폴드 개발에 관한 연구
김민기(Minki Kim),나찬가람(Chankaram Na),김형욱(Hyungwook Kim),황윤성(Yoonseong Hwang),서경근(Kyungkeun Seo) 한국자동차공학회 2019 한국자동차공학회 학술대회 및 전시회 Vol.2019 No.11
There have been dramatic changes in powertrain development trend with the rising demands for eco-friendly technology. However the needs for high efficiency internal combustion engine including hybrid engine are still high. At the same time, global automotive industry is facing unprecedented strengthened requirements when it comes to air pollution, climate changes and government regulations. Recently PCV icing problem of intake manifold was reported in extremely cold area by climate change. Intake manifold where PCV outlet is installed is one of key parts to influence the engine performances and PCV icing problem can’t be solved with the conventional design. This study will focus on the development of anti-icing plastic intake manifold. CAE simulation and experiments were implemented to evaluate design validity. Finally endoscopic visualization method was used to examine the behavior of PCV icing in intake manifold.
가솔린 T-GDi 엔진용 플라스틱 흡기매니폴드 개발에 관한 연구
김영복(Youngbok Kim),나찬가람(Chankaram Na),이정균(Jeongkyun Lee),추동호(Dongho Chu3),김용훈(Yonghoon Kim) 한국자동차공학회 2013 한국자동차공학회 학술대회 및 전시회 Vol.2013 No.11
The competition among global auto makers has become extremely high to meet the requirements to improve fuel economy as well as performance not to mention that the eco-friendly technology is essential. When it comes to power train technology, many cutting edge technologies have been applied to maximize engine performances. And intake manifold is one of key parts to influence the performance. This study will mainly review the development process and result of plastic intake manifold for gasoline 2.0L T-GDi engine. CAE simulation and experiments were implemented to evaluate design validity.