Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
권호 표지
DOI QR코드

DOI QR Code

A Study on Performance Characteristics of the Developed Fuel Pump for a Single-cylinder Four-stroke Agricultural Diesel Engine

단기통 4행정 농용 디젤기관의 개발 연료펌프 성능특성에 관한 연구

  • Bae, Myung-whan (Engineering Research Institute, Department of Mechanical Engineering for Production, Gyeongsang National University) ;
  • Lee, Sang-hae (School of Mechanical Engineering, Graduate School, Gyeongsang National University) ;
  • Jung, Hwa (Department of Computer Applied Mechanical, Jinju Campus of Korea Polytechnic College)
  • Received : 2016.07.27
  • Accepted : 2016.11.08
  • Published : 2016.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

The objective of this study is to design and manufacture a fuel pump with the plunger diameter of 4 mm and stroke of 7 mm that can be mounted in a small single-cylinder four-stroke agricultural diesel engine, and to investigate the performance characteristics of the pump. The combustion pressure in a cylinder was reproduced by forming the back pressure of 1, 6, 11, 16 and 21 bar with a nitrogen gas in the home-manufactured modeling cylinder. In the experiment, the discharge pressure was measured at the spot of 1 cm away from the discharge port of a developed fuel pump. The delivery pressure and delivery flow rate were measured at the spot of 30 cm away from the discharge port of the pump, and the pump efficiency was calculated. The pump motor speed was changed from 600 to 800, 1000, 1200 and 1400 rpm. It is found that the delivery feed rate of fuel pump is increased as the rotational speed is raised, and is decreased as the back pressure, compression pressure in the cylinder, is increased. Also, the pump efficiency is reduced as the rotational speed and back pressure are increased.

본 연구에서는 소형 단기통 4행정 농용 디젤엔진에 장착될 수 있는 플런저 직경 4 mm, 행정 7 mm의 연료펌프를 설계 및 제작하여 성능특성을 조사하는 것이 목적이다. 실린더 내 연소압력은 자체 제작한 모형 실린더 내에 질소가스를 사용하여 1, 6, 11, 16 및 21 bar의 배압을 형성시켜 모사했다. 실험에 있어서는 연료펌프 회전속도를 600, 800, 1000, 1200 및 1400 rpm로 변화시키면서 개발된 연료펌프의 토출구에서 1 cm 떨어진 지점의 토출압력, 30 cm 떨어진 지점의 송출압력과 송출유량을 배압에 대해 측정하였고, 펌프효율을 계산하였다. 그 결과, 연료펌프 회전속도가 증가하면 펌프의 송출유량은 증가하였고, 실린더 내의 압축압력인 배압이 증가하면 송출유량은 감소하였다. 또한, 연료펌프의 회전속도가 증가할수록 펌프효율이 감소되었고, 실린더 내의 배압이 증가함에 따라 펌프효율은 감소되었다.

Keywords

References

  1. T. Kamimoto and M. W. Bae, "High Combustion Temperature for the Reduction of Particulate in Diesel Engines," SAE Paper 880423, pp.1-10, 1988.
  2. T. Kamimoto, M. W. Bae and H. Kobayashi, "A Study on Soot Formation in Premixed Constant Volume Propane Combustion," Combustion and Flame 75, pp.221-228, 1989. https://doi.org/10.1016/0010-2180(89)90039-4
  3. M. W. Bae, "A Study on Soot Formation in Premixed Combustion at High Pressures," Doctoral Dissertation of Tokyo Institute of Technology, pp.1-168, 1989.
  4. UN ECE Regulation No. 83, "Uniform Provisions Concerning the Approval of Vehicles with Regards to the Emission of Pollutants According to Engine Fuel Requirements."
  5. EEA, "European Union Emission Inventory Report 1990 - 2012 under the UNECE Convention on Long-range Transboundary Air Pollution(LRTAP)," EEA Technical Report, No.12/2014, 2014
  6. National Institute of Environmental Research, "National Air Pollutants Emission 2010," NIER-GP2012-318, 2012.
  7. M. Han, D. Assanis, and S. Bohac, "Characterization of Heat-up Diesel Oxidation Catalysts Through Flow Reactor and In-situ Engine Testing," Proceedings of the institution of Mechanical Engineers, Part D: Journal of Automobile Engineering Vol.222, pp.1705-1716, 2008.
  8. M. Lapuerta, J. J. Hernandez, and F. Oliva, "Strategies for Active Diesel Particulate Filter Regeneration Based on Late Injection and Exhaust Recirculation with Different Fuels," international journal of engine reach, Vol.15, pp.209-221, 2014. https://doi.org/10.1177/1468087412468584
  9. O. Hideyuki, M. Noboru, S. Hajime and K. Shingo, "Characteristics of Diesel Combustion in Low Oxygen Mixtures with Ultra-high EGR," SAE 2006-01-1147, 2006.
  10. Y. H. Yoon, D. S Kim and C. S. Lee, "Effects of Premixed Fuel and EGR on the Combustion and Emissions Characteristics of HCCI Diesel Engine," Transactions of the KSME (B), Vol.29, No.9, pp. 1006-1012, 2005.
  11. S. Brian, R. M. William, B. Bernd, D. Winfried and F. Stefan, "Recent DPF/SCR Results Targeting US2007 and EURO 4/5 HD Emissions," SAE 2003-01-0774, 2003.
  12. J. Y. Heo, J. P. Cha1, S. H. Yoon, C. S. Lee, "Effect of EGR Rate on Combustion and Emission Characteristics in a Single-cylinder Direct Injection Diesel Engine with Common-rail," Transactions of KSAE, Vol.19, No.2, pp.20-25, 2011.
  13. H. S. Chun, H. J. Kim, H. C. Ryu, J. I. Park, J. W. Hahn, K. M. Chun, "A Study on Measurements of PM Size in a Single Cylinder," Transactions of KSAE, Vol.14, No.3, pp.95-102, 2006.
  14. C. S. Lee, K. H. Lee, D. S. Kim and S. K. Heo, "Combustion Characteristics of Premixed Charge Compression Ignition Diesel Engine with EGR System," Transactions of KSAE Vol.10, No.2, pp.66-72, 2003.
  15. M. W. Bae, H. Jung and H. J. Ok, "A Study on Effect of Cylinder Back Pressure upon Feed Rate and Delivery Characteristics of Motor-Driven Lubricator in a Large Two-Stroke Diesel Engine," Transactions of Korean Society of Automotive Engineers, Vol.13, No.5, pp.19-28, 2005.
  16. M. W. Bae, H. J. Ok and H. Jung, "A Study on Effect of Quill Accumulator upon Performance of Motor-driven Cylinder Lubricator Cylinder in a Large Two-stroke Diesel Engine," Transactions of Korean Society of Automotive Engineers, Vol.15, No.2, pp. 115-125, 2007.
  17. M. W. Bae, H. Jung, Y. H. Jung, I. D. Kim and C. H. Kang, "A Study on Feed Rate Characteristics of Motor-driven Cylinder Lubricator with Electronic Control Quill in a Large Two-stroke Diesel Engine," Transactions of Korean Society of Automotive Engineers, Vol.15, No.6, pp.1-8, 2007.
  18. M. W. Bae, H. Jung and C. H. Bae, "A Study on Feed Rate Characteristics of Motor-driven Cylinder Lubricator by the Electronically Controlled Quill System Equipped with an Accumulating Distributor in a Large Two-stroke Diesel Engine," Transactions of Korean Society of Automotive Engineers, Vol.19, No.4, pp.91-98, 2011.
  19. M. W. Bae, H. Jung and C. H. Bae, "A Study on Inequality Rate of Lubrication for Motor-driven Cylinder Lubricator by the Electronically Controlled Quill System Equipped with an Accumulating Distributor in a Large Two-stroke Diesel Engine," Transactions of Korean Society of Automotive Engineers, Vol.20, No.3, pp.26-36, 2012. https://doi.org/10.7467/KSAE.2012.20.3.026
  20. M. W. Bae, H. Jung and C. H. Bae, "A Study on Feed Rate Characteristics of Integrated Cylinder Lubricator System with an Accumulated Distribution by the Electronic Control in a Large Two-stroke Diesel Engine," Transactions of Korean Society of Automotive Engineers, Vol.20, No.6, pp.52-60, 2012. https://doi.org/10.7467/KSAE.2012.20.6.052
  21. M. W. Bae, H. Jung, S. M. Kim and C. H. Bae, "A Study on Inequality Rate of Integrated Cylinder Lubricator System with an Accumulated Distribution by the Electronic Control in a Large Two-stroke Diesel Engine," Transactions of Korean Society of Automotive Engineers, Vol.22, No.2, pp.123-133, 2014. https://doi.org/10.7467/KSAE.2014.22.2.123