Performance and Emissions Characteristics of a Converted Liquefied Petroleum Gas (LPG) Engine with Mixer and Liquid Propane Injection (LPi) System

  • Choi, Gyeung-Ho (Department of Mechanical & Automotive Engineering, Keimyung University) ;
  • Kim, Jin-Ho (Department of Automotive Engineering, Keimyung University) ;
  • Cho, Ung-Lae (Department of Automotive Engineering, Keimyung University) ;
  • Chung, Yon-Jong (Department of Automotive Engineering, Daegu Mirae College) ;
  • Han, Sung-Bin (Departmetn of Mechanical Engineering, Induk Institute of Technology)
  • Published : 2005.09.01

Abstract

In this study, the performance and emission characteristics of a liquefied petroleum gas (LPG) engine converted from a diesel engine were examined by using mixer system and liquid propane injection (LPi) system. A compression ratio of 21 for the base diesel engine, was modified to 8, 8.5, 9 and 9.5. The engine performance and emissions characteristics are analyzed by investigating engine power, brake mean effective pressure (BMEP), brake specific fuel consumption (BSFC), volumetric efficienry, CO, THC and NOx. Experimental results showed that the LPi system generated higher power and lower emissions than the conventional mixer fuel supply method.

Keywords

References

  1. Michael, P.W. Global trends in diesel emissions control-A 1997 update. SAE paper 970719, 1997
  2. Cho, B.H.; Han, Y.T.; Lee, K.H.; Lee, C.S. 'A Study on the Mixture Formation Process and Combustion Characteristics According to Injection Timing in Premixed Charge Compression Ignition', Transactions of the KSME B, 2002, 26(12), 1692-1698 https://doi.org/10.3795/KSME-B.2002.26.12.1692
  3. Lee, L.H.; Lee, C.H.; Ryu, J.D.; Choi, G.M. 'Analysis of Combustion and Flame Propagation Characteristics of LPG and Gasoline Fuels by Laser Deflection Method', KSME International Journal, 2002, 16(7), 935-941
  4. Choi, G.H.; Han, S.B.; Chung, Y.J. 'The Effect of Hydrogen Enrichment on Exhaust Emissions and Thermal Efficiency in a LPG Fuelled Engine', KSME International Journal, 2003, 17(8), 1196-1202
  5. Poonia, M.P.; Ramesh, A.; Gaur, R.R. 'Experimental Investigation of the Factors Affecting the Performance of a LPG - Diesel Dual Fuel Engine', SAE paper 1999-01-1123, 1999
  6. Kang, K.; Lee, D.; Oh, S.; Kim, C. 'Performance of an Liquid Phase LPG Injection Engine for Heavy Duty Vehicles', SAE paper 2001-01-1958, 2001
  7. Yeom, J.K.; Fujimoto, H. 'A Study on the Behavior Characteristics of Diesel Spray by using a High Pressure Injection System with Common Rail Apparatus', KSME International Journal, 2003, 17(9), 1371-1379
  8. Kajiwara, M.; Sugiyama, K.; Sagara, M.; Mori, M.; Goto, S.; Alam, M. 'Performance and Emission Characteristics of an LPG Direct Injection Diesel Engine', SAE paper 2002-01-0869, 2002