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최석렬(Seokryeol Choi),박경석(Kyoungsuk Park),박세종(Sejong Park),변영호(Youngho Byun),손성만(Sungman Son) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.5_1
It is often occurred that exhaust pipe of an internal combustion engine should be bent due to some geometrical constraints. Especially for automobiles most of exhaust pipes of engines have curvature to avoid rear axles. In this study effects of pipe curvature on the performance of a SI engine have been studied. Experiments were carried out on a 4 cycles, 2000㏄ automotive SI engine. Three types of curvature, straight pipe, circular arc and rectangle, were tested. By inserting bent pipes of different curvature dimensions into the engine exhaust pipe at various engine operating conditions numerous states of engine performance and fuel consumption were measured.<br/> In this study some important engine performance such as rate of heat release, specific fuel consumption and etc., were derived and compared with those of different bent pipes.
흡기 관내 압력 센서 출력 파형분석을 이용한 엔진 이상 진단에 관한 실험적 연구
최석렬(Seokryeol Choi),박경석(Kyoungsuk Park),김인태(Intae Kim),한창평(Changpyung Han) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Since 1900 year, automobile companies have been beginning development of an electronic control engine. Almost equipments of an engine were changed into anelectronic control engine system at the present time. Also fault diagnosis of automobile engines using electronic equipments. So this experimental study used intake manifold pressure sensor of intake port of fuel injection control system in engine and compared waveform of intake manifold pressure sensor of each conditions.
배기관 형상변화가 배압특성 변화 및 엔진성능에 미치는 영향
손성만(Sungman Son),박경석(Kyoungsuk Park),박세종(Sejong Park),변영호(Youngho Byun),최석렬(Seokryeol Choi) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.5_1
In recent years, the influence automobile emission control on environment has becom an increasingly serious problem and exist noise problem, Particulary, in this problem influence development sub muffler, dual muffler, etc. These exhaust component constantly increased. In this reason, Back pressure from the automobile is generated by various shape such as the internal combustion engine, the inlet and exhasut components and the flow the exhaust pipe of the exhaust system. The technicians paid attention to the exhaust system, through which the back pressure with driving speed which is considered to be exhaust system form. the exhaust system attached to the engine affects the combustion performance and torque, power output and back pressure, and they are in opposite relation to each other. In this study, research on back pressure characteristics relate of exhaust system.