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현대 MPI CNG(Compressed Natural Gas) 엔진 개발
장창현(C.H.Chang),민곤(K.Mim),명차리(C.L.Myung),윤금중(K.J.Yoon) 한국자동차공학회 1993 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
This paper describes Hyundai' s research and development work on the dedicated compressed natural gas (CNG) engine, A conventional I ight duty gasoline engine, a 1. 5<br/> liter four cylinder DOHC. has been modified to run on natural gas (NG) by a gas<br/> injection system and engine dynamometer test has been performed wi th emphasis on optimizations of compression ratio and intake port, Also presented are the results on the exhaust emissions characteristic and the purification performance of three-way<br/> catalytic converters developed for NG engine, Fuel composition and TI1C emissions are analyzed quantitatively using gas chromatography devices.<br/>
민곤(K.Min),명차리(C.L.Myung),장창현(C.H.Chang),윤금중(K.J.Yoon) 한국자동차공학회 1994 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Natural gas(NG) is an attractive automotive fuel in view of abundant resources and low ozone forming potential of exhaust emissions mainly composed of non-reactive methane, As the emission standard becomes stringent year by year, more attention has been moved to the development of light duty NG vehicles.<br/> HMC has been developing a natural gas vehicle(NGV) for years as an alternative fuel and now is undergoing vehicle emission test, Vehicle fuel system including NG cylinder, pressure regulator and special injector for gaseous fuels was modified to operate on NG. The fuel injector driver module was used to provide the high current that is necessary for operation of the gaseous injectors. Taken into account the unburned methane purification, specially formulated catalytic converters, UCC and MCC, were tested to evaluate a suitable catalyst with high conversion efficiency, Emission test results show that HMC's NGV has possibility to meet the LEV standard and more stringent future regulations, but the vehicle durability should be further investigated,<br/>