SPRAY AND COMBUSTION VISUALIZATION OF BIO-DIESEL IN A DIRECT INJECTION DIESEL ENGINE

Abstract

By using the self-developed dynamic visualization photographic setup, this article nvestigated some major factors affecting the spray and combustion process of iesel engine fueled by biodiesel. The experimental results show: With the increase f biodiesel percentage, fuel injection advances slightly, the ignition delay ecomes shorter and the duration of combustion lengthens. Engine speed has ittle effect on the spray. However, the combustion rate is increased and the burning ime becomes shorter with the increase of engine speed, although the duration of ombustion in terms of crank angle increases. With the increase of needle opening ressure, both the spray cone angle and the spray penetration of biodiesel ncreases, the atomization of spray improves, the ignition delay and the duration f combustion becomes shorter, the peak pressure increases.

Keywords

Dates

  • Submission Date2011-12-11
  • Revision Date2012-03-30
  • Acceptance Date2012-04-06

DOI Reference

10.2298/TSCI111211107P

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