Application of Methods for Determining Total Organic Contribution to Diesel Particulates

[+] Author and Article Information
M. S. Newkirk

Southwest Research Institute, San Antonio, TX 78228

J. Eng. Gas Turbines Power 114(3), 578-589 (Jul 01, 1992) (12 pages) doi:10.1115/1.2906627 History: Received October 04, 1991; Online April 24, 2008


This paper describes the laboratory effort to relate quantities of diesel particulate volatile organics obtained by DFI/GC™ to those obtained by traditional methods of organic analysis. Experiments were designed to investigate the potential usefulness of DFI/GC for determining the organic fraction and unburned lubricating oil contributions of diesel particulate emissions for future technology engines. A 1991 Caterpillar 3176 was used to generate samples during several heavy-duty engine test cycles, including the cold- and hot-start transient FTP and several steady-state conditions. Particulate-laden filter samples were then analyzed for organics by DFI/GC, solvent extraction, and vacuum volatilization. Results obtained using the three techniques were compared using statistical analysis techniques. Results showed that DFI/GC is extremely useful for directly determining the organic fraction of diesel particulate, and provides a better estimation of unburned lubricating oil contribution to the organic fraction than the other methods evaluated.

Copyright © 1992 by The American Society of Mechanical Engineers
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