Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
권호 표지
DOI QR코드

DOI QR Code

An Investigation on the Spray Characteristics of DME Common Rail Fuel Injection System with Variation of Ambient Pressure

분위기 압력변화에 따른 DME 커먼레일 연료 분사 시스템의 분무 특성에 관한 연구

  • Lee, Se-Jun (Graduate School of Mechanical and Automotive Engineering, Ulsan University) ;
  • Oh, Se-Doo (Center of Green Powertrain, Korea Automotive Technology Institute) ;
  • Jeong, Soo-Jin (Center of Green Powertrain, Korea Automotive Technology Institute) ;
  • Lim, Ock-Taeck (Department of Mechanical and Automotive Engineering, Ulsan University)
  • 이세준 (울산대학교 대학원 기계자동차공학과) ;
  • 오세두 (자동차부품연구원 그린동력시스템센터) ;
  • 정수진 (자동차부품연구원 그린동력시스템센터) ;
  • 임옥택 (울산대학교 기계자동차공학부)
  • Received : 2011.03.14
  • Accepted : 2011.08.23
  • Published : 2012.03.01
Download PDF
⟨ Previous Next ⟩

Abstract

It is investigated of the DME spray characteristics about varied ambient pressure and fuel injection pressure using the common rail fuel injection system when the nozzle holes diameter is varied. The common rail fuel injection system and fuel cooling system is used since DME has compressibility and vaporization in atmospheric temperature. The fuel injection quantity and spray characteristics were measured. The spray was analyzed of spray shape, penetration length, and spray angle at the six nozzle holes. The 2 types injector were used, the one was 0.166 mm diameter the other one was 0.250 mm diameter. The ambient pressure which is based on gage pressure was 0 MPa, 2.5 MPa, and 5 MPa. The fuel injection pressure was varied by 5 MPa from 35 MPa to 70 MPa. When using the converted injector, compared to using the common injector, the DME injection quantity was increased 127 % but it didn't have the same heat release. Both of the common and converted injector had symmetric spray shapes. In case of converted injector, there were asymmetrical spray shapes until 1.2 ms, but after 1.2 ms the spray shape was symmetrical. Compared with the common and converted injector, the converted injector had shorter penetration length and wider spray angle than the common injector.

Keywords

References

  1. Y. Oh and O. Lim, "The Experimental Study of Emission Characteristics and Fuel Efficiency for the Heavy-duty DME Bus," Spring Conference Proceedings, KSAE, pp.361-362, 2011.
  2. T. Seto, T. Tokumaru and S. Takase, "Improvement of Performance and Emission Gas Level of Dimethyl-ether-fueled Diesel Engine," JSAE Annual Congress, 05A0535900, 2005.
  3. Y. Sato, S. Nozaki and T. Noda, "The Performance of a Diesel Engine for Light Duty Truck Using a Jerk Type, In-line DME Injection System," SAE 2004-01-1862, 2004.
  4. I. M. Sivebaek, S. C. Sorenson and J. Jakobsen, "Dimethyl Ether (DME) - Assessment of Viscosity using the New Volatile Fuel Viscometer (VFVM)," SAE 2001-01-2013, 2001.
  5. T. Noda, T. Ishikawa, D. Ushiyama, S. Nozaki and Y. Sato, "Development of the Fuel System for a Jerk-type, In-line DME Injection System," JSAE Annual Congress, 04A0427959, 2004.
  6. M. Konno, K. Chiba and T. Okamoto, "Experimental and Numerical Analysis of High Pressure DME Spray," SAE 2010-01-0880, 2010.
  7. S. Kajitani, M. Oguma and T. Mori, "Fundamental Research of DME Diesel Engine Operated with a Common Rail Injection System," 14th ISAF, 2002-VT-13, 2002.
  8. H. Teng, J. C. McCandless and J. B. Sohneyer, "Compression Ignition Delay (Physical + Chemical) of Dimethyl Ether," SAE 2003-01-0759, 2003.
  9. S. C. Sorensen and S.-E. Mikkelsen, "Performance and Emission of a 0.273 Liter Direct Injection Diesel Engine Fuelled with Neat Dimethyl Ether," SAE 950064, 1995.
  10. S. Kajitani, M. Oguma and T. Mori, "DME Fuel Blends for Low-emission Direct -injection Diesel Engines," SAE 2000-01-2004, 2000.
  11. Z. Lonbao, W. Hewu, J. Deming and H. Zuohua, "Study of Performance and Combustion Characteristics of a DME-fuelled Light-duty Directinjection Diesel Engine," SAE 1999-01-3669, 1999.
  12. H. Teng, J. C. McCandless and J. B. Schneyer, "Viscosity and Lubricity of (Liquid) Dimethyl Ether an Alternative Fuel for Compression -ignition Engines," SAE 2002-01-0862, 2002.
  13. J. Yu, J. Lee and C. Bae, "Macroscopic Characteristics of Evaporating Dimethyl Ether(DME) Spray," Transactions of KSAE, Vol.11, No.3, pp.58-64, 2003.
  14. S. Tamura and T. Tsuji, DME Data Book, KHK, Tokyo, 2006.

Cited by

  1. Influence of nozzle hole diameter and orifice diameter on dme spray to get the similar heat value with diesel spray using the constant volume chamber vol.17, pp.6, 2016, https://doi.org/10.1007/s12239-016-0100-3
  2. Experimental Research on the Injection Rate of DME and Diesel Fuel in Common Rail Injection System by Using Bosch and Zeuch Methods vol.11, pp.2, 2018, https://doi.org/10.3390/en11020273