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.

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.

Applicable Diesel Oxidation Catalyst for Multi-Diesel Exhaust System

2014 ◽  
Vol 7 (2) ◽  
pp. 496-502 ◽  
Author(s):  
Yosuke Goto ◽  
Naohiro Kato ◽  
Shota Kawashima ◽  
Yoshiyuki Hayashi ◽  
Hideki Goto ◽  
...  
Keyword(s):  
Diesel Exhaust ◽  
Exhaust System ◽  
Diesel Oxidation Catalyst ◽  
Oxidation Catalyst ◽  
Diesel Oxidation

Development of a Low Emissions Upgrade Kit for EMD GP20D and GP15D Locomotives

2012 ◽  
Author(s):  
Steven G. Fritz ◽  
John C. Hedrick ◽  
Tom Weidemann
Keyword(s):  
Fuel Injection ◽  
Diesel Oxidation Catalyst ◽  
Oxidation Catalyst ◽  
Particulate Filter ◽  
Injection Timing ◽  
Fuel Injection Timing ◽  
Tier 1 ◽  
Emission Regulations ◽  
Diesel Oxidation ◽  
Tier 3

This paper describes the development of a low emissions upgrade kit for EMD GP20D and GP15D locomotives. These locomotives were originally manufactured in 2001, and met EPA Tier 1 locomotive emission regulations. The 1,491 kW (2,000 HP) EMD GP20D locomotives are powered by Caterpillar 3516B engines, and the 1,119 kW (1,500 HP) EMD GP15D locomotives are powered by Caterpillar 3512B engines. CIT Rail owns a fleet of 50 of these locomotives that are approaching their mid-life before first overhaul. Baseline exhaust emissions testing was followed by a low emissions retrofit development focusing on fuel injection timing, crankcase ventilation filtration, and application of a diesel oxidation catalyst (DOC), and then later a diesel particulate filter (DPF). The result was a EPA Tier 0+ certification of the low emissions upgrade kit, with emission levels below EPA Line-Haul Tier 3 NOx, and Tier 4 HC, CO, and PM levels.

Analysis techniques for diesel oxidation catalyst aging phenomena

MTZ worldwide ◽  
2010 ◽  
Vol 71 (6) ◽  
pp. 36-41
Author(s):  
Alexander Winkler ◽  
Davide Ferri ◽  
Eth Panayotis Dimopoulos Eggenschwiler ◽  
Myriam Aguirre
Keyword(s):  
Diesel Oxidation Catalyst ◽  
Oxidation Catalyst ◽  
Analysis Techniques ◽  
Diesel Oxidation ◽  
Catalyst Aging ◽  
Aging Phenomena

Highly Robust Diesel Oxidation Catalyst for Dual Mode Combustion System

2009 ◽  
Author(s):  
Satoshi Sumiya ◽  
Hanako Oyamada ◽  
Tetsuya Fujita ◽  
Keisuke Nakamura ◽  
Kazuo Osumi ◽  
...  
Keyword(s):  
Diesel Oxidation Catalyst ◽  
Oxidation Catalyst ◽  
Combustion System ◽  
Dual Mode ◽  
Diesel Oxidation
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