A Study on the Performance of an LPG (Liquefied Petroleum Gas) Engine Converted from a Compression Ignition Engine

  • Choi, Gyeung-Ho (Department of Mechanical & Automotive Engineering, Keimyung University) ;
  • Kim, Tae-Kwon (Department of Mechanical & Automotive Engineering, Keimyung University) ;
  • Cho, Ung-Lae (Department of Automotive Engineering, Keimyung University) ;
  • Chung, Yon-Jong (Department of Automotive Engineering, Daegu Mirae College) ;
  • Caton, Jerald (Department of Mechanical Engineering, Texas A & M University) ;
  • Han, Sung-Bin (Department of Mechanical Engineering, Induk Institute of Technology)
  • Published : 2007.02.28

Abstract

The purpose of this study was to investigate the reduction of exhaust gas temperature in a LPG engine that had been converted from a diesel engine. A conventional diesel engine was modified to a LPG (Liquefied Petroleum Gas) engine by replacing the diesel fuel injection pump with a LPG fuel system. The research was performed by measuring the exhaust gas temperature upon varying spark ignition timing, airfuel ratio, compression ratio, and different compositions of butane and propane. Engine power and exhaust temperature were not influenced by various butane/propane fuel compositions. Finally, among the parameters studied in this investigation, spark ignition timing is one of the most important in reducing exhaust gas temperature.

References

  1. Kajiwara, M.; Sugiyama, K.; Sagara, M.; Mori, M.; Goto, S.; Alam, M. 'Performance and Emissions Characteristics of an LPG Direct Injection Diesel Engines', SAE paper 2002-01-0869, 2002
  2. Min, B.H.; Chung, J.T.; Kim, H.Y.; Park, S. 'Effects of Gas Composition on the Performance and Emissions of Compressed Natural Gas Engines', KSME International Journal, 2003, 16(2), 219-226
  3. Heywood, J.B. Internal Combustion Engine Fundamentals, McGraw - Hill International Editions, 1988
  4. Vincent, M.W.; Richards, P.; Cook, S.L. 'Particulates reduction in diesel engines through the combination of a particulate filter and fuel additive', SAE paper 982654, 1998
  5. Yokota, H.; Nakajima, H.; Kakaegawa, T. 'A new concept for low-emission diesel combustion (2nd report: reduction of HC and CO emission, and improvement of fuel consumption by EGR and MTBE blended fuel)', SAE paper 981933, 1998
  6. Zelenka, P.; Egert, M.; Cartellieri, W. 'Ways to meet future emission standards for heavy sports utility vehicles (SUV)', SAE paper 2000-05-0288, 2000
  7. Lee, K.H.; Lee, C.S.; 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
  8. Arcoumanis, C.; Nagwaney, A.; Hentschel, W.; Rake, S. 'Effect of EGR on spray development, combustion and emissions in a 1.9L direct-injection diesel engine', SAE paper 952356, 1995
  9. Lejeune, M.; Lortet, D.; Michon, S. 'Combustion development for Euro 4', SAE paper 2002-30-0021, 2002