Theory and Experiments on Air-Entrainment in Fuel Sprays and Their Application to Interpret Diesel Combustion Processes

1995 ◽  
Author(s):  
Takemi Chikahisa ◽  
Tadashi Murayama
Keyword(s):  
Air Entrainment ◽  
Diesel Combustion ◽  
Fuel Sprays ◽  
Combustion Processes ◽  
Theory And Experiments

Fuel Effects on Diesel Combustion Processes

1996 ◽  
Author(s):  
E Clasen ◽  
K Song ◽  
S Campbell ◽  
K T. Rhee
Keyword(s):  
Diesel Combustion ◽  
Fuel Effects ◽  
Combustion Processes

Alcoholic biofuels as an admixture component for conventional and alternative diesel combustion processes

MTZ worldwide ◽  
2009 ◽  
Vol 70 (7-8) ◽  
pp. 58-65 ◽  
Author(s):  
Michael Kaack ◽  
Christian Weiskirch ◽  
Peter Eilts
Keyword(s):  
Diesel Combustion ◽  
Combustion Processes

Method and Detailed Analysis of Individual Hydrocarbon Species From Diesel Combustion Modes and Diesel Oxidation Catalyst

2008 ◽  
Vol 130 (4) ◽  
Author(s):  
Manbae Han ◽  
Dennis N. Assanis ◽  
Timothy J. Jacobs ◽  
Stanislav V. Bohac
Keyword(s):  
Detailed Analysis ◽  
Diesel Exhaust ◽  
Soot Formation ◽  
Soot Oxidation ◽  
Diesel Oxidation Catalyst ◽  
Oxidation Catalyst ◽  
Diesel Combustion ◽  
Flame Ionization ◽  
Accuracy And Precision ◽  
Combustion Processes

An undiluted exhaust hydrocarbon (HC) speciation method, using flame ionization detector gas chromatographs, is developed to investigate HC species from conventional and low-temperature premixed charge compression ignition (PCI) combustion pre- and postdiesel oxidation catalyst (DOC) exhaust. This paper expands on previously reported work by describing in detail the method and effectiveness of undiluted diesel exhaust speciation and providing a more detailed analysis of individual HC species for conventional and PCI diesel combustion processes. The details provided regarding the effectiveness of the undiluted diesel exhaust speciation method include the use of a fuel response factor for HC species quantification and demonstration of its linearity, detection limit, accuracy, and precision. The listing of individual HC species provides not only the information needed to design surrogate exhaust mixtures used in reactor tests and modeling studies but also sheds light on PCI combustion and DOC characteristics. Significantly increased engine-out concentrations of acetylene, benzene, and toluene support the theory that net soot reduction associated with PCI combustion occurs due to the reduction of soot formation (as opposed to increased soot oxidation). DOC oxidation behavior differs depending on the combustion characteristics, which change exhaust species and temperature.

Experimental Investigation of Low Temperature Diesel Combustion Processes

2011 ◽  
Vol 183 (12) ◽  
pp. 1376-1400 ◽  
Author(s):  
S. Cong ◽  
G. P. McTaggart-Cowan ◽  
C. P. Garner ◽  
E. Wahab ◽  
M. Peckham
Keyword(s):  
Experimental Investigation ◽  
Low Temperature ◽  
Diesel Combustion ◽  
Combustion Processes

The Problem of Predicting Rate of Heat Release in Diesel Engines

1969 ◽  
Vol 184 (10) ◽  
pp. 192-202 ◽  
Author(s):  
H. C. Grigg ◽  
M. H. Syed
Keyword(s):  
Diesel Engine ◽  
Heat Release ◽  
Chemical Kinetics ◽  
Diesel Engines ◽  
Turbulent Mixing ◽  
Air Entrainment ◽  
Experimental Results ◽  
Fuel Sprays ◽  
Rate Of Heat Release ◽  
Kinetics Of

Two simple models for the rate of heat release in diesel engines are described. The factors taken into account in the models are rate of entrainment of air into the fuel sprays, the rate of turbulent mixing of fuel and air within the spray, and the chemical kinetics of burning. The models differ in their treatment of the rate of air entrainment. Comparisons are made with experimental results for a diesel engine running at two speeds and a variety of turbocharging ratios. The overall agreement with experiment in respect of shape of rate of heat release diagram is good, with the exception of the naturally aspirated cases where the rate of air entrainment is too low.

Method and Detailed Analysis of Individual Hydrocarbon Species From Diesel Combustion Modes and Diesel Oxidation Catalyst

2007 ◽  
Author(s):  
Manbae Han ◽  
Stanislav V. Bohac ◽  
Timothy J. Jacobs ◽  
Dennis N. Assanis
Keyword(s):  
Detailed Analysis ◽  
Diesel Exhaust ◽  
Soot Formation ◽  
Diesel Oxidation Catalyst ◽  
Oxidation Catalyst ◽  
Diesel Combustion ◽  
Flame Ionization ◽  
Soot Precursors ◽  
Diesel Oxidation ◽  
Combustion Processes

An undiluted exhaust hydrocarbon (HC) speciation method, using flame ionization detector (FID) gas chromatographs (GC), is developed to investigate HC species from conventional and low-temperature premixed charge compression ignition (PCI) combustion, from pre- and post-diesel oxidation catalyst (DOC) exhaust. This paper expands on previously reported work by describing in detail the method and effectiveness of undiluted diesel exhaust speciation and providing a more detailed analysis of individual HC species for conventional and PCI diesel combustion processes. The details provided regarding the effectiveness of the undiluted diesel exhaust speciation method include the use of a fuel response factor (RF) for HC species quantification and demonstration of its linearity, detection limit, accuracy and precision. The listing of individual HC species provides not only the information needed to design surrogate exhaust mixtures used in reactor tests and modeling studies, but also sheds light on PCI combustion and DOC characteristics. Significantly increased engine-out concentrations of acetylene, benzene and toluene support the theory that net soot reduction associated with PCI combustion occurs due to the reduction of soot formation from soot precursors. DOC oxidation behavior differs depending on the combustion characteristics, which change exhaust species and temperature.

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