Design of an optimum combustion chamber across multiple speed/load points for a heavy-duty diesel engine: analytical design and experimental validation

2011 ◽  
Vol 12 (2) ◽  
pp. 123-144 ◽  
Author(s):  
C A Idicheria ◽  
R Diwakar
2012 ◽  
Vol 516-517 ◽  
pp. 623-627
Author(s):  
Ye Yuan ◽  
Guo Xiu Li ◽  
Yu Song Yu ◽  
Peng Zhao ◽  
Hong Meng Li

Multi-dimensional simulation was applied for the investigation of the combustion system of a heavy-duty diesel engine. Firstly, the matching of combustion chamber and injection pressure has been determined by simulation. Then through intermediate characteristic parameters which could quantitatively describe the properties of the mixing and combustion, the influence of the matching of chamber caliber ratios and injection pressure on each sub-process in compression and power stroke was analyzed comprehensively. The results showed that, for the model studied in this article, increasing the combustion chamber caliber ratio and injection pressure could help expanding the distribution range of the mixture in cylinder, making the mixture more uniform, increasing the proportion of the dilute mixture, thus effectively improved the power performance.


Fuel ◽  
2012 ◽  
Vol 93 ◽  
pp. 524-527 ◽  
Author(s):  
Hsin-Kai Wang ◽  
Chia-Yu Cheng ◽  
Kang-Shin Chen ◽  
Yuan-Chung Lin ◽  
Chung-Bang Chen

Author(s):  
Joan Boulanger ◽  
Fengshan Liu ◽  
W. Stuart Neill ◽  
Gregory J. Samllwood

An extension to a phenomenological sub-model for soot formation to include soot agglomeration effects is developed. The improved sub-model, consisting of six coupled differential equations, was incorporated into a commercial CFD code and used to investigate soot formation in a heavy-duty diesel engine. The results of the numerical simulation show that the soot oxidation process is reduced close to the combustion chamber walls. This is due to the lower charge temperatures encountered as a result of heat transfer to the combustion chamber walls. The sub-model predicts that larger soot particles and clusters are encountered in the annular region close to the combustion chamber walls at the end of the combustion cycle. These results are consistent with available in-cylinder experimental data on soot.


2021 ◽  
Vol 156 ◽  
pp. 105781
Author(s):  
Louise Gren ◽  
Vilhelm B. Malmborg ◽  
John Falk ◽  
Lassi Markula ◽  
Maja Novakovic ◽  
...  

2015 ◽  
Vol 8 (2) ◽  
pp. 209-226 ◽  
Author(s):  
Takuya Yamaguchi ◽  
Yuzo Aoyagi ◽  
Noboru Uchida ◽  
Akira Fukunaga ◽  
Masayuki Kobayashi ◽  
...  

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