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[論文] 메탄올(M85) 엔진의 냉시동성 개선을 위한 실험적 연구
이시훈(S.H.Lee),신영기(Y.K.Shin),황상순(S.S.Haoung) 한국자동차공학회 1992 오토저널 Vol.14 No.3
Recently, air pollution and energy security problems have necessiated the developmet of alternative fuel vehicles. As an alternative fuel vehicle FFV(Flexible Fuel Vehicle) which can be operated by any mixture between gasoline and M85(methanol 85 % and gasoline 15% by vol. percent) has been drawing great attention. But poor cold startability of high methanol-content fuel which is characteristic of lower fuel volatility and higher latent heat of vaporization than gasoline is one of the major problems to be solved for the development of FFV. In this paper, important factors influencing cold startability of general S.I. engines are described. And, some cost-effective and practical methods were investigated in view of the optimization of fueling parameters and ignition system for M85 fuel. The test results showed good startability up to -22~-23℃.
[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/>
BTL(Biomass to Liquid) 공정을 위한 합성가스 공급 시스템 개발
김영두(Y.D. Kim),김범종(B.J. Kim),문지홍(J.H. Moon),이은도(U.D. Lee),김광수(K.S. Kim),양창원(C.W. Yang),이정우(J.W. Lee),이시훈(S.H. Lee),김재호(J.H. Kim),이상봉(S.B. Lee) 한국연소학회 2012 KOSCOSYMPOSIUM논문집 Vol.- No.44
Biomass to Liquid (BTL) is an attractive option for using biomass as an renewable energy. A syngas supplying system has been designed for BTL system, based on the Fischer-Tropsche (FT) process, and long-term operation test was conducted. The syngas supplying system is composed of a fluidized bed gasifier, gas cleaning and compression system, and methanol absorption system. Stable operation of more than hundred hours was achieved with several champaigns. In addition, a pilot scale biomass gasifier has been developed for 1 bbl/day BTL system and its performance was evaluated. Some preliminary results and current status of the development of BTL system will be presented.