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http://dx.doi.org/10.5916/jkosme.2011.35.5.566

Performance Characteristics with Various Fuel Composition and Temperature for an External Type Fuel Pump in LPLi System  

Nam, Deok-Woo (경원대학교 대학원 기계공학과)
Yoon, Jun-Kyu (경원대학교 기계.자동차공학과)
Lim, Jong-Han (경원대학교 기계.자동차공학과)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.35, no.5, 2011 , pp. 566-575 More about this Journal
Abstract
Since LPG (Liquefied petroleum gas) fuel supply system has an advantage of low emission characteristics, many studies have been conducted. In spite of the advantage of LPG supply system, a higher vapor pressure and lower viscosity than diesel or gasoline fuel may cause unstable running of fuel pump by the deterioration in lubrication performance and chemical reaction with rubber parts than that of diesel and gasoline fuel. Therefore its physical properties can cause the deterioration of durability. In this research, we developed an external type LPG pump which has the advantage of the price competitiveness and the convenient maintenance for LPLi system. The experiments were carried out in order to assess characteristics of the external type fuel pump at different fuel composition and temperature. As a result, there aren't any differences between internal and external type pump performance. It is observed that the same level of efficiency was maintained for both pumps as flow rate was increased with higher fuel temperature and more contents of propane in the fuel. And the pressure difference in LPLi system is maintained at constant with the various fuel compositions and temperatures due to their own characteristics of fuel supply system.
Keywords
External fuel pump; Fuel composition; LPLi (Liquid Phase LPG Injection); Cavitation; NPSH (Net Positive Suction Head); Pump efficiency;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 B. Lutz, R. Stanglmaier and R. Matthews, "The effects of fuel composition, system design, and operating conditions on in-system vaporization and hot start of a liquid-phase LPG injection system", SAE 981388, pp.43-60. 1998.   DOI
2 T. S. Gang and J. G. Sim, "Development of fuel pump for LPLi", KSAE Fall Conference Proceeding, pp. 525-530, 2004.
3 W. Li, "Effect of viscosity of fluids on centrifugal pump performance and flow pattern in the impeller", International Journal of Heat and Fluid Flow, vol. 21, pp. 207-212, 2002.   DOI   ScienceOn
4 S. N. Lee, and S. W. Kim, "A Study on performance characteristics for a mini turbo-pump", Journal of the Research Institute of Technology, vol. 18, no. 2, 2003.
5 Y. J.Kim, K. B. Kim and K. H. Lee "The spray characteristics of a liquid phase LPG port injection type injector for a remodeled diesel engine", SAE 2009-01-1879, 2009.   DOI
6 D. S. Baik, "A Study on emission characteristics in a LPG vehicle", Transaction of KAIST, vol. 7, no. 6, pp. 993-997, 2006.   과학기술학회마을
7 D. R. Kim, LPi Engine System, US patent 7181073, 2007.
8 K. Y. Kang, D. Y. Lee, S. M. Oh and C. U. Kim, "Performance of a liquid phase LPG injection engine for heavy-duty vehicles", SAE 2001-01-1958, 2001.   DOI
9 Z. Wang, B. Deng Y. Han and H. Wang, "Combustion and emissions characteristics of a small spark ignited LPG engine", SAE 2002-01-1738, 2002.   DOI
10 S. Yamaguchi, M. Ishii, H. Yasujawa, S. Tsusaka, B. Takigawa, H. Ono and M. Tanuma, "Research and development of LPLi liquid fuel injection system(3rd. Report)-Fuel composition and exhaust emission performance of LPG vehicle with liquid injection system-",JSAE 200350387, 2003.