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승용 디젤엔진의 LPL EGR 적용에 따른 응축수 발생 특성
오광철(Kwangchul Oh),김덕진(Deokjin Kim),이천환(Chunhwan Lee),이춘범(Chunbeom Lee),김성근(Sungkeun Kim) 한국자동차공학회 2012 한국자동차공학회 지부 학술대회 논문집 Vol.2012 No.5-2
While the request of diesel engine is recently increased due to its excellent fuel economy, the emission regulation becomes reinforced. In the case of EURO-6 that is started from 2014 and required 60% NOx reduction compared with EURO-5, It could be satisfied by hybrid system consist of advanced EGR(Exhaust Gas Recirculation) and aftertreatment system (LNT or SCR). Advanced EGR system have been used LP-EGR (Low Pressure Loop EGR) and HP-EGR (High Pressure Loop EGR) simultaneously. In this paper, we investigated the generation of condensate in inter-cooler according to LPL EGR application in TCI diesel engine.
김광철 ( Kwangchul Kim ) 서양근대철학회 2017 근대철학 Vol.10 No.-
이 논문의 목적은 테일러와 푸코의 근대성 이론에 중요한 요소인 계몽의 신화와 근대적 에피스테메 개념을 비교하는 것이다. 이 연구는 다음과 같은 3단계로 진행된다. 첫째, 푸코의 『말과 사물』과 「인간학에 대한 서설」에서 나타나는 근대적 인간으로서의 근대적 에피스테메를 살펴본다. 둘째, “Die Blosse Vernunft”에서 나타나는 테일러의 계몽의 신화에 대한 견해를 연구한다. 셋째, 계몽의 신화와 근대적 에피스테메를 비교함으로써 두 개념이 표면상 유사함에도 불구하고 푸코의 근대적 에피스테메에 대한 이해는 계몽의 신화와는 근본적으로 다르다는 것을 보인다. This paper aims to compare the myth of Enlightenment and modern èpistémè which forms important elements in each theory for modernity of Taylor and Foucault. I will proceed with this study in three steps. Firstly, I will sketch out how Foucault deals with the concept of the modern human appearing as modern èpistémè by investigating the Les mots et les choses and the “Introdution à l’Anthropologie”. Secondly, I will examine Taylor’s view on the myth of Enlightenment using his argument in the “Die Blosse Vernunft (Reason Alone).” Thirdly, I will compare the modern èpistémè and the myth of Enlightenment, and show that although there is ostensibly a similarity between them, Foucault’s understanding of modern èpistémè is radically different from the myth of Enlightenment.
디젤연료 열분해 매연 입자 생성기를 이용한 DPF 담체의 Nano-PM 정화 효율 비교
김종훈(Jonghun Kim),오광철(Kwangchul Oh),김덕진(Deokjin Kim),이천환(Chunhwan Lee),이춘범(Chunbeom Lee),고상철(Sangchul Ko) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
The experiment of diesel pyrolysis has been performed to clarify the soot formation process without oxidation. The influences of temperature, residence time on soot formation have been investigated with the particle size distribution, thermal analysis and C/H ratio. The results show that soot formation from diesel pyrolysis strongly depends on both temperature and residence time. The critical temperature for soot evolution is about 1100℃, of which primary particle diameter is about 20 ㎚. As the temperature and residence time increase, diesel soot became more matured particle, i.e. the higher C/H ratio and the larger particle size, and the higher ignition temperature. The well organized soot generator have been used in the investigation of Nano PM filtration efficiency of developed Si₃N₄ DPF.
김덕진(Deokjin Kim),정호창(Hochang Jung),오광철(Kwangchul Oh),김진완(Jinwan Kim) 한국자동차공학회 2013 한국자동차공학회 지부 학술대회 논문집 Vol.2013 No.5-2
Since traction motors for powertrain of electric vehicles have a wide operating range, they are not equally efficient at every speed and torque condition. Typically, powertrain system of electric vehicles consists of traction motor and single speed gearbox, but this configuration is not enough to get optimal fuel economy and driving performance for real-world driving cycles which have different characteristics simultaneously. A multi-speed configuration of powertrain could reduce the electric energy consumption without degradation of drviving performance, evne if the traction motor power is reduced.
DPF의 Crack 상태에 따른 PM 배출 특성에 관한 실험적 연구
김종훈(Jonghun Kim),오광철(Kwangchul Oh),이경복(Kyungbok Lee),김덕진(Deokjin Kim),이천환(Chunhwan Lee),이춘범(Chunbeom Lee) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
Several problems with exhaust gas emitted by diesel engine must be solved. Especially particulate matter (PM) is the major concerns. To reduce emission of diesel soot, diesel particulate filter (DPF) has become widely known as an indispensable after-treatment component of the purification of the PM in the diesel exhaust gas. DPF is damaging by various forms such as whitening and crack due to controlled or uncontrolled regeneration and uncertain reasons, and there is no clear criterion to judge the cracked filter. So, we hope to classify the degree of filter crack using the particle emission characteristics. Filtration efficiency of PN for cracked filter is varying from time to time, it is showing a big differences by the test number. But, some failure shows no difference of PM filtration efficiency with fresh filter. In this study, we hope to find two objectives. First, it is find the reduction efficiency of PM mass & number for fresh and cracked filters. Second, we standardize the crack level of filter.
Uncracked Filter와 Cracked Filter의 PM 배출 특성에 관한 실험적 연구
김종훈(Jonghun Kim),이경복(Kyoungbok Lee),오광철(Kwangchul Oh),김덕진(Deokjin Kim),이천환(Chunhwan Lee),이춘범(Chunbeom Lee) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5
Several problems with exhaust gas emitted by diesel engine must be solved. Especially particulate matter(PM) is the major concerns. To reduce emission of diesel soot, diesel particulate filter(DPF) has become widely known as an indispensable after-treatment component of the purification of the PM in the diesel exhaust gas. Recently, the many studies published concerning that the nano-particles are the harmful effect on the human body. So PM emission regulation is changed from the mass regulation to the number regulation. Due to tightening emission regulations, the monitoring for DPF is required. As monitoring term of DPF, the research is needed on the emission characteristics of PM number(PN) according to the level of crack of DPF. In this study, the experiments were performed using a 7.6L DL08S heavy duty engine, and test cycle used in this experiments is ESC mode. The experiments were conducted on the emission characteristics of PM number(PN) depending on the level of cracked DPF. Through these experiments, we can determine whether DPF is the failure. Therefore, the emission characteristics of PN is very important parameter for the monitoring about DPF.