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SI 자동차의 엔진 및 운행 특성에 따른 배기가스 배출 성능에 관한 연구
류재욱(Jaewook Ryu),송정훈(Jeonghoon Song),이창식(Changsik Lee) 한국자동차공학회 2001 한국자동차공학회 Workshop Vol.2001 No.-
This study focus on the effect of vehicle mileage, driving characteristics and the vehicle type on the exhaust gas performances. In this study, 1,260 vehicles of spark ignition engine are sampled and investigated. The exhaust emissions are measured with a CO/HC emission gas analyzer. The SI engine vehicles are classified by driving distance, engine specification and fuel to research on the effects of each parameters on the exhaust emissions.<br/> The results show that the driving distances are not affect on the emission gases so much. However. the engine characteristics, for example, DOHC or SOHC have influence upon the quantity of exhaust emissions. In addition, the LPG vehicle emits more CO and HC than gasoline vehicle. although it is widely known that LPG engine emits less emissions. The results arc also depicted that the CO or HC are increased almost in inverse proportion to excess air ratio (λ). Therefore, it is certified that to reduce the CO or HC, the control of excess air ratio is very important.