Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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An Investigation on Spray Characteristics of Diesel - DME with Change of Injection Pressure

분사압력 변화에 따른 디젤-DME연료의 다단분사 특성에 관한연구

  • 정연호 (울산대학교 자동차선박 대학원) ;
  • 양지웅 (울산대학교 기계공학부 대학원) ;
  • 오충환 (울산대학교 기계공학부 대학원) ;
  • 임옥택 (울산대학교 자동차선박 대학원)
  • Received : 2013.10.08
  • Accepted : 2013.11.29
  • Published : 2013.12.30
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Abstract

An investigation on spray characteristics of fuels which diesel and di-methyl ether (DME) with change of injection pressure used the multi-injection in constant volume combustion chamber (CVCC). Diesel was already used famous fuel which we could use. DME showed similar features with diesel like as cetane number, auto-ignition temperature. High cetane number of diesel and DME could make possible to compression ignition. DME showed different atomization from diesel due to evaporating pressures and boiling points. Experiments were carried out in CVCC equipped with Delphi solenoid 6-hole type injector and the spray characteristics of diesel and DME were tested the various pre and pilot injection. Terms of injections and a number of injections in multi-injection has been controlled. Experiments were performed in 2 types that 1500 rpm, 2000 rpm and under the condition of injection ranging from 100 bar to 500 bar. From the results of this experiment diesel showed longer spray penetration than DME. That result showed different of atomization speed DME and diesel. Result of high injection pressure condition showed similar spray characteristics diesel and DME. After this investigation, new conditions and experiments using laser light to go forward and add the fuels like as the biodiesel and diesel and DME blend.

Keywords

References

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