The Resource Effect of engine operating conditions on the size and morphology of diesel particulate emissions, by Adam Neer

Effect of engine operating conditions on the size and morphology of diesel particulate emissions, by Adam Neer

Label
Effect of engine operating conditions on the size and morphology of diesel particulate emissions
Title
Effect of engine operating conditions on the size and morphology of diesel particulate emissions
Statement of responsibility
by Adam Neer
Creator
Author
Subject
Language
eng
Summary
"The size, morphology and volume fraction of sub-micron particulate matter emitted from a compression ignition (diesel) engine was investigated using thermophoretic sampling experiments followed by direct visual characterizations under transmission electron microscopy. Specifically, measurements were conducted at the exhaust of a 6059T John Deere, 5.9 L, 6 cylinder, turbocharged, direct injection diesel engine. The particles observed were composed of nearly spherical primary particles (spherules) that formed aggregates of various sizes and shapes. The size distributions of spherules and aggregates were separately measured to obtain the available surface area, which is crucial for estimating the environmental and health impact of particles. Aggregate fractal dimensions and prefactors were also quantified. Different engine speeds and relative loads were considered to determine the effects of typical engine operating conditions on the particulate properties. The present mean spherule diameters were in the range of 20-35 nm while the mean aggregate diameters were in the range of 160 to 350 nm. 98% of the measured aggregates were smaller than a gyration diameter of 1 [mu]m; indicating that the current regulations based on PM(2.5) may be insufficient. Fractal dimensions and prefactors were in the range of 1.77 ± 0.14 and 1.8 ± 0.5, respectively, characteristics of the cluster-cluster aggregation mechanism. These fractal properties are consistent with the numerous past studies in various laboratory flames and a recent study in another diesel engine. Soot volume fractions were also estimated based upon thermophoretic sampling experiments developed from laboratory flames. These measurements implemented for the first time in a diesel engine yielded soot volume fractions on the order of 0.001 to 0.01 ppm"--Abstract, page iii
Member of
Cataloging source
UMR
http://library.link/vocab/creatorDate
1980-
http://library.link/vocab/creatorName
Neer, Adam
Degree
M.S.
Dissertation year
2005.
Granting institution
University of Missouri--Rolla
Illustrations
illustrations
Index
no index present
Literary form
non fiction
Nature of contents
  • dictionaries
  • bibliography
  • theses
http://library.link/vocab/subjectName
  • Diesel motor exhaust gas
  • Soot
  • Morphology
  • Diesel motor exhaust gas
  • Morphology
  • Soot
Label
Effect of engine operating conditions on the size and morphology of diesel particulate emissions, by Adam Neer
Instantiates
Publication
Note
Vita
Bibliography note
Includes bibliographical references (pages 57-58)
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier.
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent.
Control code
909027990
Extent
1 online resource (ix, 59 pages)
Form of item
online
Media category
computer
Media MARC source
rdamedia.
Media type code
  • c
Other physical details
illustrations.
Specific material designation
remote
System control number
(OCoLC)909027990
Label
Effect of engine operating conditions on the size and morphology of diesel particulate emissions, by Adam Neer
Publication
Note
Vita
Bibliography note
Includes bibliographical references (pages 57-58)
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier.
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent.
Control code
909027990
Extent
1 online resource (ix, 59 pages)
Form of item
online
Media category
computer
Media MARC source
rdamedia.
Media type code
  • c
Other physical details
illustrations.
Specific material designation
remote
System control number
(OCoLC)909027990

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