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[論文] 현대 FFV(Flexible Fuel Vehicle)개발
명차리(C. L. Myung),이시훈(S. H. Lee),신영기(Y. G. Shin),박광서(K. S. Park),박심수(S. S. Park) 한국자동차공학회 1992 오토저널 Vol.14 No.6
This paper describes Hyundai's research and development work on a flexible fuel vehicle (FFV). The work on FFV has been conducted to evaluate its potential as an alternative to the conventional gasoline vehicle. Hyundai FFV described here can be operated on M85, gasoline, or any of their combinations, in which the methanol concentration is measured by an electrostatic type fuel sensor. For that operation, a special FFV ECU(Electronic Control Unit) has been developed and incorporated in the FFV.<br/> The characteristics affecting FFV operation, such as FFV ECU control strategy and injector flow rate, have been investigated and optimized through the experiments. And various development tests have been performed in view of engine performance, durability, cold startability, and exhaust emissions reduction. The exbaust gas aftertreatment system consisting of manifold type catalyst and secondary air injection system shows good emission reduction performance including formaldehyde, and finally, the possibility of the FFVs as the low emission vehicles is evaluated by presenting NMOG(Non-Methane Organic Gases) levels with respect to MO and M85. With these results, it is concluded that FFV can be a candidate for the low emission vehicles, but more works on its durability improvement is required.
현대 FFV(Flexible Fuel Vehicle)개발
명차리(C.L.Myung),이시훈(S.H.Lee),신영기(Y.G.Shin),박심수(S.S.Park),이현순(H.S.Lee) 한국자동차공학회 1992 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
This paper describes Hyundai's research and development work on a flexible fuel vehicle (FFV). The work on FFV has been conducted to evaluate its potential as an alternative to the conventional gasoline vehicle. Hyundai FFV described here can be operated on M85, gasoline, any of their combinations, in which the methanol concentration is measured by an electrostatic type fuel sensor. For that operation, a special FFV ECU(Electronic Control Uni t) has been developed and incorporated in the FFV.<br/> The characteristics affecting FFV operation, such as FFV ECU control strategy and injector flow rate, have been investigated and optimized by experiment. And various development tests have been performed in view of engine performance, durabi1ity, cold startabi1ity, and exhaust emissions reduction. The exhaust gas aftertreatment system consisting of manifold type catalyst and secondary air injection system shows good emission reduction performance including formaldehyde, and finally, the possibility of the FFVs as low emission vehicles is evaluated by presenting NMOG(Non-Methane Organic Gases) levels with respect to MO and M8S, Withthese results, it is concluded that it has possiblity for FFVs to be a candidate of low emission vehicles, but more work on its durability improvement should be required.<br/>
가스 조성이 천연 가스 엔진의 성능에 미치는 영향에 관한 연구
방기헌(K.H.Bang),정진택(J.T.Chung),박심수(S. Park),김호영(H.Y.Kim) 한국자동차공학회 1998 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1998 No.5_1
The composition of natural gas varies with the location and climate. However, the effects of differences in fuel composition has not been considered in the development of natural gas engine. The purpose of this study is to investigate the effect of composition of natural gas on engine performance and to provide basic data for the development of natural gas engine and the selection of gas imports. As a result, when the Air/Fuel ratio was controlled with fixed spark timing, the variation of maximum power for six different gas fuels was less than 3%, and when the spark timing was controlled with fixed fuel volume, that was less than 7%.<br/>
천연가스 조성이 CNG엔진의 탄화수소계 배기가스에 미치는 영향
민병혁(B.H.Min),김호영(H.Y.Kim),박심수(S.Park),정진택(J.T.chung) 한국자동차공학회 1998 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1998 No.5_1
Natural gas is considered to be an alternative fuel for passenger car, truck transportation and stationary engines that can provide both good environmental effect and energy security. However, as the composition of fuel natural gas varies with the location, climate and other factor, such changes in fuel properties affect emission characteristics and performance of CNG engine. The purpose of this study is to investigate the effect of differences in fuel composition on raw hydrocarbon emission characteristics.<br/> Using methane 100 % and five types of natural gas fuels which were selected in consideration of Wobbe index(WI) and maximum combustion potential(MCP), each experimental was made on the condition of engine emission test. The speciated Hydrocarbon emission is analyzed by using gas chromatography.<br/> The results showed that the total hydrocarbon(THC) is decreased with an increasing WI and MCP on the two engine test condition. As the fraction of non-methane hydrocarbon (NMHC) in fuel, especially ethane, is increased, engine-out NMHC emission is increased. This results showed on equivalent CH₄ ozone reactivity.<br/>
[가솔린엔진] 천연가스 조성이 CNG Engine의 배기가스에 미치는 영향
이남권(N.K. Lee),김호영(H.Y. Kim),박심수(S. Park),정진택(J.T. Chung) 한국자동차공학회 1999 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The composition of natural gas that is drawing international attention for their role in global environmental protection as an oil-alternative energy varies with location, climate and other factors, and these variations are known to affect engine performance and emissions. So the objective of this study is to clarify the effect of natural gas composition on exhaust emissions of CNG Engine. In this study, experiments were carried out with a CNG dedicated engine, and the engine was operated on compressed natural gas at two different loads and two different speeds. This paper reports how natural gas composition affect engine exhaust emissions, NOx, THC, CO, etc..
김명호(M.H.Kim),조경민(K.M.Cho),박심수(S.S.Park),허남건(N.K.Hur) 한국자동차공학회 1992 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1992 No.11
The three-dimensional steady state flow field inside a typical dual-monolith automotive catalytic converter was simulated using STAR-CD. The monolith brick resistance coefficient was acquired from the comparison between the Ford experimental data of pipe flow with monolith and simulation results by STAR-CD. In this study, computation is conducted with the variation of inlet condition: straight inlet. 90° bend inlet. Therefore. the purpose of this study is to use multi-dimensional CFD code to simulate the flow field inside the converter. to complement comprehensive modeling efforts. and to provide a diagnostic tool for better converter design.
이온프로브를 이용한 가솔린엔진의 화염전파측정에 관한 연구
한봉훈(B.H.Han),김우태(W.T.Kim),박심수(S.S.Park),이현순(H.S.Lee) 한국자동차공학회 1992 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The in-cylinder combustion phenomena of internal combustion engine have been the subject of many researches. However, a number of early studies were carried out by using the combustion pressure measurement or the visualization of flame propagation with modifications of engine hardware or rig equipments and thus their applications to engine development process were rather I imi ted. In order to investicate the<br/> flame propagation of the gasoline engine wi thout any modi fications of<br/> <br/> engine hardware, the ion probes are installed at cylinder head.<br/> <br/> The<br/> <br/> measurement technique is based upon the ion current detecting method. The applicability of the ion probe sensor is confirmed with a-engine<br/> at different engine operating parameters.<br/> The test results indicate that the ion probe sensor provides enough information of mean flame propagation speed and flame behaviors in the<br/> combustion chamber.<br/>
배기다기관이 부착되어 있는 촉매에 대한 비정상유동해석에 관한 연구
이정헌(J.H.Lee),한봉훈(B.H.Han),박심수(S.S.Park) 한국자동차공학회 1994 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
A three dimensional unsteady state flow field in a close coupled catalyst with exhaust manifold was studied numerically with STAR-CD code, a finite volume based 3-D turbulent flow code. The effect of exhaust manifold geometry on transient flow pattern was examined in order to understand the flow distribution in the catalytic converter.<br/>