Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
권호 표지

A Numerical Analysis on the Spray Characteristics at Different Injection System Parameters in a Common-rail Diesel Engine

연료분사계 변수의 변화에 따른 커먼레일 디젤엔진의 분무특성에 관한 수치적 분석

  • Received : 2009.12.15
  • Accepted : 2010.03.16
  • Published : 2010.03.31
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Abstract

This paper present the diesel spray characteristics at different injection system parameters in a HSDI diesel engine. The spray characteristics was calculated by the coupled simulation of fuel injection system model and three-dimensional KIVA-3V code with TAB spray model. The relevant injection parameters are accumulator volume, control chamber initial volume, control orifice diameter, needle valve diameter and nozzle chamber initial volume, etc. Parametric investigation with respect to twelve relevant injection parameters showed that there was a significant advantage in varying control chamber initial volume, control chamber orifice diameter, and nozzle chamber orifice diameter with respect to effect the SMD and fuel injection speed. Consequently, in order to design the fuel injection system for spray characteristics, it seems reasonable to suppose to be optimized the fuel injection system.

Keywords

References

  1. S. Kobayashi, "NOx Reduction from Diesel Combustion Using Pilot Injection with High Pressure Fuel Injection", SAE Paper 920461, 1992.
  2. T. Kamimoto, "Effect of High Pressure Injection on Soot Formation Processes in a rapid Compression Machine to Simulate Diesel Flames", SAE Paper 87610, 1987.
  3. M. Milan, "Optimization of the diesel engine injection nozzle", SAE Paper 932467, 1993.
  4. A. Amsden, "KIVA-3V: A KIVA Program with Blockstructured Mesh for Complex Geometries", Los Alamos Laboratory Report No. LA-12503-MS, Los Alamos, New Mexico, 1993.
  5. http://www.ansys.com/products/icemcfd.asp
  6. N. Shoichiro, "Applied Numerical Methods with Software", Prentice-Hall, 1991.
  7. P. J. O'Rourke and A. A. Amsden, "The Tab method for Numerical Calculation of Spray Droplet Breakup", SAE paper 872089, 1987.
  8. G. Stiesch, "Modeling Engine Spray and Combustion Processes", Springer, pp. 60-61, 2003.