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Effect of Gasoline Composition on Emissions of Aromatic Hydrocarbons
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Abstract
The primary objective of this study was to determine the effect of aromatic compounds in gasoline on exhaust emissions of benzene. Previously reported studies have shown that benzene emissions correlate well with fuel content of benzene and total aromatics. The intent was to determine the relative significance of the individual aromatic species as benzene precursors.
Although benzene combustion exhaust emissions were of primary interest, emissions of other aromatic species were also measured. The experimental design enabled determination of fuel composition effects on emissions of benzene as well as other aromatics.
A matrix of 16 fuels was formulated with systematic variation in their content of benzene, toluene, ethyl benzene, xylenes, and C+9 aromatics. The emission levels of these species were determined in both engine-out and tailpipe-out exhaust from four 1985/86 model year vehicles. The EPA Federal Test Procedure (FTP) was used in all four experiments.
Results show that the exhaust emission rate of each aromatic component is highly correlated with the level of that component in the fuel and, to a lesser degree, with the content of the other aromatics in the fuel. Comparison of tailpipe-out emissions with engine-out emissions indicates that there were no marked differences in catalyst efficiency for the aromatic compounds included in this study.
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Marshall, W. and Gurney, M., "Effect of Gasoline Composition on Emissions of Aromatic Hydrocarbons," SAE Technical Paper 892076, 1989, https://doi.org/10.4271/892076.Also In
References
- An Inventory of Carcinogenic Substances Released into the Ambient Air of California. Final Report - Tasks II and IV. Prepared by Roberts R. M. KVB, Inc. March 1980
- Fleming R.D. Effect of Fuel Composition on Exhaust Emissions from a Spark- Ignition Engine. BuMines RI 7423 1970 68
- Rims J. M. Benzene Emissions from Passenger Cars CONCAWE Report No. 12/83 The Hague Netherlands December 1982
- Black F.M. High L.E. Lang J.M. Composition of Automotive Evaporative and Tailpipe Hydrocarbon Emissions. J. Air Pollution Control Association 30 1980 1216
- Code of Federal Regulations, Title 40, Chapter I, Part 86, Appendix I
- Seizinger D.E. Marshall W.F. Cox F.W. Boyd M.W. Vehicle Evaporative and Exhaust Emissions as Influenced by Benzene Content of Gasoline. SAE paper No. 860531
- Seizinger D.E. Marshall W.F. Cox F.W. Boyd M.W. Vehicle Evaporative and Exhaust Emissions as Influenced by Benzene Content of Gasoline Final Report prepared for the Coordinating Research Council, Inc. April 1986 DOE Contract No. DE-FC22-83FE60149 April 22 1986 52
- Marshall W.F. Study to Determine the Fate of Benzene Precursors in Gasoline Final Report to California Air Resources Board December 1988
- American Society for Testing and Materials. Standard Test Method for Benzene and Toluene in Finished Motor Aviation Gasoline by Gas Chromatography D 3606-82 in 1985 Annual Book of ASTM Standards 05.03 Petroleum Products and Lubricants Philadelphia, PA 388 98