천연가스 조성이 CNG엔진의 탄화수소계 배기가스에 미치는 영향

다국어 초록 (Multilingual Abstract)

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 Hydrocarbon emission characteristics of engine-out.<br/>
Using methane 100% and five types of natural gas fuels which were selected in consider of w??bbe index(WI) and maximum combustion potential(MCP), each experimental was made on the condition of engine emission test. The speciated Hydrocarbon emission is analyz- ed by using gas chromatography.<br/>
The results showed that the total hydrocarbon(THC) is decreased with an increasing WI and MCP on the two 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/>