This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
An Improved Method for Determining the Hydrocarbon Fraction of Diesel Particulates by Vacuum Oven Sublimation
Annotation ability available
Sector:
Language:
English
Abstract
A new vacuum-oven sublimation method (PVOS) for measuring the hydrocarbon fraction of diesel particulates has been developed to overcome problems with the standard vacuum-oven sublimation technique (VOS). VOS gave extremely low (negative at 15:1 A/F) results for diesel particulate samples taken at medium to high load (25:1 or lower A/F). The low results are due to the adsorption by the samples of trace amounts of continuously regenerated (from test samples and oven seals) heavy-hydrocarbon oven contaminants. PVOS corrects the problem by using a nitrogen gas purge to sweep hydrocarbons from the oven during testing. Comparisons among PVOS, VOS and methylene chloride extraction (MCE) over a range of A/F and engine speeds showed that PVOS results correlate more closely with MCE results than do results determined by the standard VOS technique.
Recommended Content
Authors
Citation
Halsall, R., McMillan, M., and Schwartz, B., "An Improved Method for Determining the Hydrocarbon Fraction of Diesel Particulates by Vacuum Oven Sublimation," SAE Technical Paper 872136, 1987, https://doi.org/10.4271/872136.Also In
References
- Shimpi S. A. Yu M. “Determination of a Reliable and Efficient Diesel Particulate Hydrocarbon Extraction Process,” SAE Paper No. 811183 1981
- Wall J. C. Hoekman S. K. “Fuel Composition Effects on Heavy-Duty Diesel Particulate Emissions,” SAE Paper No. 841384 1984
- Barry E. G. McCabe L. J. Gerke D. H. Perea J. M. “Heavy-Duty Diesel Engine/fuels Combustion Performance and Emissions--A Cooperative Program,” SAE Paper 852078 1985
- Mayer W. J. Lechman D. C. Hilden D. L. “The Contribution of Engine Oil to Diesel Exhaust Particulate Emissions,” SAE Paper No. 800256 1980
- Hilden D. L. Mayer W. J. “The Contribution of Engine Oil to Particulate Exhaust Emissions From Light-Duty, Diesel-Powered Vehicles,” SAE Paper No. 841395 1984
- Zweidinger R. B. Tejada S. B. Dropkins D. Huisingh J. Claxton L “Characterization of Extractable Organics in Diesel Exhaust Particulate,” Symposium on Diesel Particulate Emissions Measurement Characterization Ann Arbor, MI 1978
- Hilden D. L. Bergin S. P. Burley H. A. Tharby R. D. Fisher I. P. “The Effect Of Hydrotreatment of Diesel Fuel Derived from Canadian Tar Sands on Particulate Exhaust Emissions,” SAE Paper No. 821243 1982
- Williams R. L. Chock D. P. “Characterization of Diesel Particulate Exposure,” Environment International 5 199 209 1981
- “CRO Handbook of Chemistry and Physics,” CRC Press 55th B-68 1974
- O'Honlon J. F. “A Users Guide to Vacuum Technology,” Wiley Interscience 200 204 1980