TITLE

Bir Dizel Motorda Yanma Karakteristiklerinin Ä°ncelenmesi

AUTHOR(S)
Türkcan, Ali; Çanakçi, Mustafa; Özsezen, Ahmet Necati; Sayin, Cenk
PUB. DATE
June 2009
SOURCE
Firat University Journal of Engineering;Jun2009, Vol. 21 Issue 1, p1
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In this study, the effects of engine operating conditions on the combustion characteristics of an indirect injection (IDI) (pre-combustion chamber) diesel engine have been experimentally investigated. Cylinder gas pressures and fuel line pressures were collected with crank angle resolution of 0.25° under various speed and load conditions, and combustion characteristics were investigated. To eliminate cycle to cycle variation, the cylinder gas pressure data of 50 consecutive cycles were averaged by written a computer program. The obtained average cylinder gas pressure data was used to calculate heat release. The heat release analysis was carried out by using a single zone thermodynamic model. The engine tests were performed at full loads and 20, 30 and 40 Nm constant loads. The engine speeds were selected between 1000-3000 rpm with the increment of 500 rpm. The experimental results show that the maximum cylinder gas pressures increased with the increasing engine speed and load. It was observed that engine load is more effective than engine speed on the raising of maximum cylinder gas pressure. The location of the maximum cylinder gas pressure closed to top dead center (TDC) at high engine loads. The start of combustion points closed to TDC at high engine speeds. The ignition delay slightly decreased with the increase of the engine load and it increased with the increasing engine speed. However, as the total combustion duration increased with the increasing engine load, it decreased with the high engine speeds.
ACCESSION #
43565686

 

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