주행 경로 및 계절의 변화가 소형 경유차의 실제 주행 시 질소산화물 배출량에 미치는 영향 (Influence of Driving Routes and Seasonal Conditions to Real-driving NOx Emissions from Light Diesel Vehicles)

서지정보

· 발행기관 : 한국자동차공학회
· 수록지 정보 : 한국자동차공학회 논문집 / 22권 / 1호 / 148 ~ 156페이지
· 저자명 : 이태우, 김지영, 박준홍, 전상진, 이종태, 김정수

초록

The objective of this study is to compare NOx emissions from light duty diesel vehicles measured fromon-road tests that conducted under various driving routes and seasonal conditions. We measured real-driving NOxemissions using PEMS, portable emissions measurement system, under the urban, rural and motorway road trafficconditions. On-road tests were repeated at summer, fall and winter season. The accumulated driving distance is morethan 1,200 km per each vehicle. Route average NOx emission factors were compared among nine route-seasoncombinations. The emission characteristics of each combinations were investigated using time series mass emissionrates and vehicle operation-based emission rates and activities, which is based on U.S. EPA's MOVES model. Mostconcerned route-season combination is “urban road condition at summer”, which shows two to eleven times higherNOx emissions than other combinations. The emission rates and activities under low speed operating conditions shouldbe managed in order to reduce urban-summer NOx. From a NOx control strategy perspective, the exhaust gasrecirculation, EGR, is observed to be properly operated under wide range of vehicle driving conditions in Euro-5vehicles, even if the air conditioner turns on. In high power demanding conditions, the effect of overspeeding could bemore critical than that of air conditioner activation.

영어초록

The objective of this study is to compare NOx emissions from light duty diesel vehicles measured fromon-road tests that conducted under various driving routes and seasonal conditions. We measured real-driving NOxemissions using PEMS, portable emissions measurement system, under the urban, rural and motorway road trafficconditions. On-road tests were repeated at summer, fall and winter season. The accumulated driving distance is morethan 1,200 km per each vehicle. Route average NOx emission factors were compared among nine route-seasoncombinations. The emission characteristics of each combinations were investigated using time series mass emissionrates and vehicle operation-based emission rates and activities, which is based on U.S. EPA's MOVES model. Mostconcerned route-season combination is “urban road condition at summer”, which shows two to eleven times higherNOx emissions than other combinations. The emission rates and activities under low speed operating conditions shouldbe managed in order to reduce urban-summer NOx. From a NOx control strategy perspective, the exhaust gasrecirculation, EGR, is observed to be properly operated under wide range of vehicle driving conditions in Euro-5vehicles, even if the air conditioner turns on. In high power demanding conditions, the effect of overspeeding could bemore critical than that of air conditioner activation.

참고자료

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