Comparative Study of Diesel Oil and Biodiesel Spray Combustion Based on Detailed Chemical Mechanisms

2013 ◽  
Vol 136 (3) ◽  
Author(s):  
Junfeng Yang ◽  
Valeri I. Golovithcev ◽  
Chitralkumar V. Naik ◽  
Ellen Meeks
Keyword(s):  
Comparative Study ◽  
Diesel Oil ◽  
Exhaust Emission ◽  
Biodiesel Fuel ◽  
Combustion Mechanism ◽  
Engine Simulation ◽  
Constant Volume Combustion Chamber ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel ◽  
Lift Off

In the present work, a semidetailed combustion mechanism for biodiesel fuel was validated against the measured autoignition delay times and subsequently implemented in the fortÉ cfd engine simulation package (Reaction Design Inc., 2010, “fortÉ, FOR-UG-40102-1009-UG-1b,” Reaction Design Inc., San Diego, CA) to investigate the spray characteristics (e.g., the liquid penetration and flame lift-off distances of rapeseed oil methyl ester (RME) fuel in a constant-volume combustion chamber). The modeling results were compared with the experimental data. Engine simulations were performed for a Volvo D12C heavy-duty diesel engine fueled by RME on a 72 deg sector mesh. Predictions were validated against measured in-cylinder parameters and exhaust emission concentrations. The semidetailed mechanism was shown to be an efficient and accurate representation of actual biodiesel combustion phases. Meanwhile, as a comparative study, the simulations based on a detailed diesel oil surrogate mechanism were performed for diesel oil under the same conditions.

Comparative Study of Diesel Oil and Biodiesel Spray Combustion Based on Detailed Chemical Mechanisms

2012 ◽  
Author(s):  
Junfeng Yang ◽  
Valeri I. Golovitchev ◽  
Chitralkumar V. Naik ◽  
Ellen Meeks
Keyword(s):  
Comparative Study ◽  
Cfd Simulation ◽  
Fluid Dynamic ◽  
Diesel Oil ◽  
Exhaust Emission ◽  
Biodiesel Fuel ◽  
Combustion Mechanism ◽  
Detailed Mechanism ◽  
Reduction Methods ◽  
Lift Off

A master combustion mechanism of biodiesel fuels has recently been developed by Westbrook and co-workers [1]. This detailed mechanism involves 5037 species and 19990 reactions, the size, which prohibits its direct use in computational fluid dynamic (CFD) applications. In the present work, various mechanism reduction methods included in the Reaction Workbench software [2] were used to derive a semi-detailed reduced combustion mechanism maintaining the accuracy of the master mechanism for a desired set of engine conditions. The reduced combustion mechanism for a five-component biodiesel fuel was implemented in the FORTÉ CFD simulation package [3] to take advantage of advanced chemistry solver methodologies and advanced spray models. The spray characteristics, e.g. the liquid penetration and flame lift-off distances of RME fuel were modeled in a constant-volume combustion chamber. The modeling results were compared with the experimental data. Engine simulations were performed for the Volvo D12C heavy-duty diesel engine fueled by RME on a 72° sector mesh. Predictions were validated against measured in-cylinder parameters and exhaust emission concentrations. The semi-detailed mechanism was shown to be an efficient and accurate representation of actual biodiesel combustion and emissions formation. Meanwhile, as a comparative study, the simulation based on a detailed diesel oil surrogate mechanism were performed for diesel oil under the same conditions.

Technology for Meeting the 1991 U.S.A. Exhaust Emission Regulations on Heavy Duty Diesel Engine

1990 ◽  
Author(s):  
Kazutoshi Mori ◽  
Hiroshi Kamikubo ◽  
Tohru Kawatani ◽  
Toshiji Obara ◽  
Izumi Fukano ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Exhaust Emission ◽  
Heavy Duty ◽  
Emission Regulations ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel

Lift-Off Length in an Optical Heavy-Duty Diesel Engine: Effects of Swirl and Jet-Jet Interactions

2015 ◽  
Vol 8 (5) ◽  
pp. 2188-2198 ◽  
Author(s):  
Guillaume Lequien ◽  
Zheming Li ◽  
Oivind Andersson ◽  
Mattias Richter
Keyword(s):  
Diesel Engine ◽  
Heavy Duty ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel ◽  
Lift Off ◽  
Jet Interactions

Lift-Off Length in an Optical Heavy-Duty Diesel Engine

2015 ◽  
Vol 8 (2) ◽  
pp. 635-646 ◽  
Author(s):  
Guillaume Lequien ◽  
Zheming Li ◽  
Oivind Andersson ◽  
Mattias Richter
Keyword(s):  
Diesel Engine ◽  
Heavy Duty ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel ◽  
Lift Off

scholarly journals The Effect of Different Injection Strategies and Intake Conditions on the Emissions Characteristics in a Diesel Engine

2009 ◽  
Vol 2009 ◽  
pp. 1-11 ◽  
Author(s):  
M. Gorji-Bandpy ◽  
S. Soleimani ◽  
D. D. Ganji
Keyword(s):  
Diesel Engine ◽  
Three Dimensional ◽  
Exhaust Emission ◽  
Injection Timing ◽  
Spray Cone ◽  
Heavy Duty Diesel Engine ◽  
Computational Fluid Dynamics Cfd ◽  
Pollutant Reduction ◽  
Heavy Duty Diesel ◽  
Injection Strategies

Choosing various injection strategies and intake conditions are potentially effective techniques to reduce exhaust emission from diesel engines. The purpose of this study is to investigate the effect of different spray incoming angles, different spray cone angles, different injection timing, and different intake temperatures together with emission characteristics on a heavy duty diesel engine via three dimensional computational fluid dynamics (CFD) procedures. Furthermore the effect of multiple injector combustion chamber and its benefits in pollutant reduction is studied. The principal results show the significant differences in soot and generation during combustion between above different strategies.

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