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비도로용 디젤엔진의 분사시기 및 인젝터 변경에 따른 배출가스 특성 연구
김훈명(Hoon Myung Kim),강정호(Jeong Ho Kang),한다혜(Da Hye Han),정학섭(Hak Sup Jung),표수강(Su Kang Pyo),안중규(Jueng Kyu Ahn) 한국연소학회 2014 한국연소학회지 Vol.19 No.2
Environmental regulations are being reinforced for the solution of environmental pollution, that are global issues. Exhaust gas regulations of off-road engines also demand stepwise reduction emission from beginning of Tier 4 interim(2013). Characteristically, Tier 4 regulation apply the NRTC mode which is a transient cycle. And technical studies using NRTC mode are uncommon. In this study, for satisfy the Tier 4 final regulation on the NRTC mode, experimental study was conducted using a 3.4 L off-road engine. Fuel injection timing and injector hole number are chosen as parameters for investigation of combustion and exhaust gas characteristics on off-road diesel engine.
미립자 금속 촉매 방식 배기가스 후처리장치 재제조 공정 연구
유성주(Seong Ju Yoo),송현석(Hyun Suk Song),문정진(Jeong Jin Moon),김형준(Hyong Jun Kim),강정호(Jung Ho Kang),김훈명(Hoon Myung Kim) 한국생산제조학회 2023 한국생산제조학회지 Vol.32 No.4
Developing an efficient remanufacturing process that mitigates severe failure in particulate metal catalysts (PMCs) is necessary to reduce environmental pollution (e.g., CO₂ emission) and manufacturing costs. In this study, a PMC remanufacturing process was developed by classifying the failures exhibited by a used PMC into four levels, followed by determining the feasibility of remanufacturing the PMC. The developed remanufacturing process consisted 11 steps according to the failure levels of the used PMC. The performance of a new PMC and that of the PMC remanufactured by our proposed method were evaluated and compared. PMC remanufacturing is an eco-friendly technology that involves less production steps, reduces raw-material consumption, reduces environmental pollution, and aids in resource saving.