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수소첨가 CNG연료의 연소 및 배출 가스 특성에 관한 실험적 연구
박귀열(Kyi-Yeol Park) 산업기술교육훈련학회 2011 산업기술연구논문지 (JITR) Vol.16 No.2
Searching for environmentally friendly fuel is the main issue for the future internal combustion engines. HCNG(Hydrogen-Methane) as a fuel is now considered as one of the alternative fuels due to its low pollutant emissions and high burning rate. An experimental study was carried out to obtain the fundamental data about the combustion and emission characteristics of pre-mixed hydrogen and methane in a Constant Volume Chamber(CVC) with various fractions of hydrogen-methane blends. A pre-mixed chamber was used to obtain a good mixture of the above gas. Exhaust emissions were measured using Horiba exhaust gas analyzer, for various fraction of hydrogen-methane blends. The results showed that the rapid combustion duration was shortened and rate of heat release increases as hydrogen fraction in blended fuel ratio was increased. Moreover, the maximum mean gas temperature and mamimum pressure ratio have increased. These phenomena were attributed to the burning velocity which increases exponentially with the increase of hydrogen fraction in blended fuels. Exhaust HC and CO2 concentration decreased while NOx emission increased with the increase of the hydrogen fraction in blended fuels. The information from this experiment will be useful in the application of hydrogen along with Methane as a fuel to internal combustion engines.
박귀열(Kyi-yeol Park),오용석(Yong-suk Oh),문병철(Byung-chul Moon) 한국생산제조학회 2006 한국생산제조학회지 Vol.15 No.1
Modern after-treatment technology has been developed variously in order to decrease exhausted emission in diesel engine. However, it seems very difficult to comply with updated stringent emission standards. Specially, it has been many years that exhaust gas from gasoline automobile rather than from diesel is the major object concerned by Korea and other countries, and it is strongly required on the reduction techniques on harmful NOx and PM among those compositions. Thus, this research focused on the electronic control EGR and the target for this research is heavy-duty turbo-diesel engine with EGR technology(High pressure route and low pressure route system).
단독형 CO 가스 경보기와 화재감지 신호를 연동하여 방재 장치와 보조 배터리 전원을 제어하는 캠핑카용 화재 수신기 시스템의 개발
이동윤(Dong-Yun Lee),박귀열(Kyi-Yeol Park),김덕호(Deok-Ho Kim),성일휴(Il-Hyu Seong),박봉석(Bong-Seok Park) 한국산업기술융합학회(구. 산업기술교육훈련학회) 2022 산업기술연구논문지 (JITR) Vol.27 No.3
A receiver capable of detecting and providing alerts about fire and CO gas during camper van accidents and operating a disaster prevention device was developed. The function of the proposed disaster prevention device was verified by designing and testing a receiver for fire detection. It includes a function for controlling windows and ventilation fans by interlocking a fire signal and a stand-alone CO gas alarm and cutting off the auxiliary-battery power. The proposed camper fire-detection receiver is considered a primary model in the development of additional disaster prevention facilities for campers considering that there are currently no commercialized products.
ULSD 使用에 따른 機關性能과 排氣가스 및 DOC에 미치는 影響에 關한 實驗的 硏究
한영출,박귀열,박봉규 국민대학교 생산기술연구소 2002 공학기술논문집 Vol.25 No.-
Automobile industries have been developed rapidly mainly as a key manufacturing industry. On the other hands, atmosphere pollution is getting worse noticeably than in any other times. In the diesel emission, PM(Particulate Matter) and NOx(Nitrogen Oxidation) have been exhausted with a great amount and the regulation is getting stringent. In order to develop a low emission engine, it is necessary to research on better quality of fuel. Sulfur contained in fuel is transformed to sulfur compound by DOC(Diesel Oxidation Catalyst) and then it causes to increase of sulfate-laden PM on the surface of catalyst. Recently diesel automobile industries are focused on the development of reduction techniques on PM by modifying combustion of sulfur in fuel. In this research, ULSD(Ultra Low Sulfur Diesel) is used as a fuel and some experimental results are investigated. ULSD can reduce not only PM but also gas materials because cetane value, flash point, distillation 90%, pour point and viscosity are improved in the process of desulfurization. However, excessively reduced sulfur may cause to decrease lubricity of fuel and engine performance in fuel injection system. Therefore, it requires only modest adjusted amount of sulfur can improve engine performance and DOC, as well as decrease of emission.
DOC의 K-7 Mode에 의한 배기가스 저감에 관한 연구
한영출,백두성,오용석,박만재,박귀열,류규현 韓國工作機械學會 2000 한국생산제조학회지 Vol.9 No.3
With the significant growth of the number of vehicles, environmental problems is raised. NOx, SOx, and PM emissions in diesel powered vehicles are larger than that in gasoline, because the development of pollutants reduction techniques has no: been yet achieved. So it is need to develop after-treatment or to convert into alternative fuel to satisfy emission regula-tion. Among the after-treatment systems to reduce the diesel emissions, studies with diesel oxidation catalyst(DOC) are done greatly. In this study using DOC, reduction efficiency with the change of temperature and catalyst loading was calculated through measurements of CO, HC, PM, and SOx.
소형엔진의 배출가스측정방법에 따른 질소산화물 및 매연에 관한 연구
한영출,나완용,오용석,문병철,박봉규,박귀열 한국공작기계학회 2001 한국생산제조학회지 Vol.10 No.3
Recently, increasing usage of diesel vehicle, many countries try to reduce the pollutant materials by emission regulation standard. Particularly, in our country, the supplement ratio of diesel vehicle is high, and air pollution by vehicle exhaust gas is very serious. So, in study, we tested exhaust gas by various mode in light duty diesel engine. Therefore, we can know about NOx and smoke seriousness.