Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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Impact of Test routes and Driving style on NOx emissions of Light-Duty Diesel Vehicle over Real Driving Emissions test

승용 경유 차량의 실제도로 주행 배출가스 시험에서 주행 경로와 운전 성향이 질소산화물에 미치는 영향

  • 유영수 (한국교통대학교 자동차공학과) ;
  • 정준우 (한국교통대학교 자동차공학과) ;
  • 전문수 (한국교통대학교 자동차공학과) ;
  • 차준표 (한국교통대학교 자동차공학과)
  • Received : 2019.05.13
  • Accepted : 2019.06.17
  • Published : 2019.06.30
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Abstract

It is expected that the introduction of real-driving emission will strengthen the exhaust emission. However, various researches have been reported that real-driving emission has been influenced by factors such as characteristics of the test routes and driving characteristics for drivers. In order to reflect this effect, European Commission applied the concept of driving dynamics to prevent deliberately driving of excessive and acceleration over RDE test. The purpose of this study is to analyze the characteristics of exhaust emissions according to real-driving test in three test routes and driving style. As a result of the test, it was confirmed that when the same driver tested real-driving test under three test routes, it depends on the driving characteristics of the route. Also, RDE-NOx for driving style was that severe driving has been about 16 times higher than normal driving in KNUT route.

Keywords

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Fig. 1 Map for RDE routes

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Fig. 2 Correlation of emissions between CVS and PEMS equipment

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Fig. 3 Comparison of real-time NOx and CO2 emission between CVS and PEMS equipment

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Fig. 6 Driving share for each RDE routes

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Fig. 7 Trip duration for each RDE tests

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Fig. 9 Real-time of GPS. altitude and speed, Exhaust temperature, EGR opening rate, NOx emissions and Fuel rate on Kpetro test route under driver A

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Fig. 9 Continued

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Fig. 10 NOx emissions for driving style under KNUT route

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Fig. 12 Impact CO2 emissions for driving style

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Fig. 4 Vehicle speed for each RDE routes

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Fig. 5 Trip distance for each RDE routes

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Fig. 8 NOx emissions in each driving part for driver A

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Fig. 11 Test results of trip dynamics under KNUT route

Table 1 Specifications of test vehicle

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Table 2 Specifications of PEMS

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