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논문 상세정보

LPG 액상분사식 인젝터에서 후적에 의한 아이싱 특성 연구

Characteristics of Icing Phenomenon with Droplet of an Injector for Liquid Phase LPG Injection System

Abstract

Since the liquid phase LPG injection(LPLI) system has an advantage of higher power and lower emission characteristics than the mixer type fuel supply system, many studies and applications have been conducted. However, the heat extraction, due to the evaporation of liquid fuel, causes not only a dropping of LPG fuel but also icing phenomenon that is a frost of moisture in the air around the nozzle tip. Because both lead to a difficulty in the control of accurate air fuel ratio, it can result in poor engine performance and a large amount of HC emissions. The experimental investigation was carried out on the bench test rig in this study. It was found that n-butane, that has a relatively high boiling point($-0.5^{\circ}C$), was a main species of droplet composition and also found that the droplet problem was improved by the use of a large inner to outer bore ratio nozzle whose surface roughness is smooth. The icing phenomena were decreased when the an engine head temperature was increased, although a large amount of icing deposit was still observed in the case of $87^{\circ}C$. Also, it was observed that the icing phenomenon is improved by using anti-icing bushing.

참고문헌 (10)

  1. C. U. Kim, S. M. Oh and K. Y. Kang, 'Characteristics of Icing Phenomenon on Injector in a Liquid Phase LPG Injection SI Engine,' Spring Conference Poceedings, KSAE, pp.419-424, 2003 
  2. C. U. Kim, C. W. Park, S. M. Oh and K. Y. Kang, 'Leakage Characteristics of LPG Injector with Low Viscosity LPG Fuel,' Journal of ILASS-Korea, Vol.10, No.4, pp.8-15, 2005 
  3. W. S. Kim, J. C. Park, S. S. Park, J. S. Yoo and J. H. Lee, 'A Study on the Development of Icing by Injection of LPG in the Liquid Phase around Injector (I),' Transactions of KSAE, Vol.11, No.1, pp.87-94, 2003 
  4. K. Y. Kang, D. Y. Lee, S. M. Oh and C. U. Kim, 'A Fundamental Study on a MPI LPG Engine for Heavy Duty Vehicles,' SAE 2001-02-1958, 2001 
  5. B. R. Lutz, R. H. Stanglmaier, R. D. Matthews and J. Cohen, '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, 1998 
  6. J. P. Yi, J. H. Lee and J. I. Park, 'A Study on Icing Phenomenon on LPLi Injector Tip with Shut-off Valve,' Fall Conference Proceedings, KSAE, pp.798-803, 2005 
  7. J. C. Park, W. S. Kim, J. H. Lee, B. O. Lee and K. S. Park, 'Visualization of the Icing at LPLi Engine Injector and the Effect of the Inflow of Ice Particle into Cylinder on the Combustion and the Exhaust Gas,' Transactions of KSAE, Vol.12, No.2, pp.39-44, 2004 
  8. C. U. Kim, S. M. Oh and K. Y. Kang, 'Characteristics of Icing Phenomenon on Injector in a Liquid Phase LPG Injection SI Engine,' Journal of ILASS-Korea, Vol.8, No.2, pp.1-6, 2003 
  9. C. U. Kim, S. M. Oh and K. Y. Kang, 'Investigation of Icing Phenomenon in Liquid Phase LPG Injection System,' Vol.8, No.1, pp.9-15, 2003 
  10. R. Cipollone and C. Villante, 'A/F and Liquid Phase Control in LPG Injected Spark Ignition ICE,' SAE 2000-01-2974, 2000 

이 논문을 인용한 문헌 (1)

  1. Park, Cheol-Woong ; Kim, Chang-Up ; Choi, Kyo-Nnam ; Baik, Seung-Kook ; Shin, Moon-Sung 2012. "A Study on Performance Improvement in Durability and Reliability of LPi Injector" 한국가스학회지 = Journal of the Korean institute of gas, 16(2): 38~44 

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