A Study on the Emissions Characteristics of a LPG Vehicle According to Various Test Modes and Ambient Conditions

다양한 시험모드와 환경조건에 따른 LPG 차량의 배출특성 연구

  • Received : 2015.06.03
  • Accepted : 2015.07.24
  • Published : 2015.08.31


As the interest on the air pollution is gradually rising up at home and abroad, automotive and fuel researchers have been working on the exhaust emission reduction from vehicles through a lot of approaches, which consist of new engine design, innovative after-treatment systems, using clean (eco-friendly alternative) fuels and fuel quality improvement. This research has brought forward various main issues : whether PM emissions should be regulated for diesel and gasoline vehicles and whether gasoline and LPG powered vehicles can be further neglected from PM emission inventories. Finally, the greenhouse gas regulation has been discussed including automotive emission regulation. The greenhouse gas and emissions of automotive had many problem that cause of ambient pollution, health effects. Based on various test modes and ambient conditions, this paper discusses the characteristics of LPG on exhaust emissions and greenhouse gases. Also, this paper assessed emission characteristics due to the test temperature. These test temperature were performed by dividing the temperature of the test mode and the lowest local temperature in winter. Through this study, the correlation of vehicle test mode and ambient condition, exhaust emission, greenhouse gas emission was analyzed.


LPLi (Liquid phase LPG injection);Test mode (5-cycle (FTP and SFTP) mode, NEDC, WLTP mode);Greenhouse gas ($CO_2$, $CH_4$, $N_2O$);Emissions gas (THC, CO, NOx, PM number etc.)


  1. T. A. Fauzi Soelaiman, et al. "Use of LPG to Obtain Cleaner Fuel for the Environment and to Control Knock in SI Engine", The 13th International Pacific Conference on Automotive Engineering, 56-61, 2005
  2. Hokil Lee, et al. "The Correlation Analysis of CO2 Emission and Fuel Economy for LPG Vehicles", KSAE08-S0101, KSAE spring conference, 2008
  3. "2015 Business support information for reduction of driving cars emissions in metropolitan areaes", Metropolitan Air Quality Management Office, Ministry of Environment, 2015
  4. Jong-Hun Lim, et al. "LPLi engine performance and vehicle exhaust emission characteristics", Transactions of KSAE, Vol. 11, No. 4, pp.15-21, 2003
  5. Woojik Lee, et al. "Development of HMC Mono LPG Injection System", KSAE04-S0026, KSAE spring conference, 2004
  6. S.B. Han, Y.T. Kim, H.K. Lee, J.H. Kang, and Y.J. Chung, "Characteristics Analysis of Exhaust Emission according to Fuels at CVS-75 Mode", Journal of Energy Engineering, 18(1), 69-73, 2009
  7. Minho Lee, Sungwoo Kim, Kiho Kim, Jonghan Ha, "A study on the cold startability and emission characteristics of LPG vehicle according to test temperature", KIGAS, Vol.18, No.6, pp.7-13, 2014


Supported by : 환경부.오토오일위원회