This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Effects of Methanol and Fuel Sulfur Concentration on Tailpipe Emissions in a Production Variable Fuel Vehicle
Annotation ability available
Sector:
Language:
English
Abstract
Conventional and speciated tailpipe emissions from a 1992 Chevrolet VFV Lumina were measured to: 1) document differences between M85 and M0; 2) determine whether differences between M85 and M0 were due to the lower sulfur content of M85. The test fuels were M0-A (industry average gasoline), M85-A (a splash blend of 85% methanol and 15% M0-A), and M85-S, which was M85-A doped with thiophene to increase its sulfur concentration to a level equivalent to M0-A. Changing fuel from M0-A to M85-A decreased CO, benzene, 1,3-butadiene, and hydrocarbon-equivalent organic emissions (OMHCE), and reduced both specific reactivity and ozone forming potential of the exhaust. However, methanol and formaldehyde emissions increased. These results are consistent with those of a prototype fleet studied in the Auto/Oil Air Quality Improvement Research Program. Results with M85-S indicate that the inherently lower sulfur concentration of M85-A compared to M0-A did not significantly affect differences in total organic emissions or their ozone forming potential; however fuel sulfur concentration did have a significant impact on CO and benzene emissions differences between M85-A and M0-A. Lower carbon consumption with M85 compared to M0 likely contributes to reduced OMHCE and CO emissions.
Authors
Citation
Kirwan, J., "Effects of Methanol and Fuel Sulfur Concentration on Tailpipe Emissions in a Production Variable Fuel Vehicle," SAE Technical Paper 932774, 1993, https://doi.org/10.4271/932774.Also In
References
- Gorse R.A. Benson J.D. Burns V.R. Hochhauser A.M. Koehl W.J. Painter L.J. Reuter R.M. Rippon B.H. Rutherford J.A. “The Effects of Methanol/Gasoline Blends on Automobile Emissions,” SAE Special Publication SP-920, paper 920327 1992
- Koehl W.J. Benson J.D. Burns V. Gorse R.A. Hochhauser A.M. Reuter R.M. “Effects of Gasoline Composition and Properties on Vehicle Emissions: A Review of Prior Studies -- Auto/Oil Air Quality Improvement Research Program,” SAE Special Publication SP-920, paper 912321 1991
- Furey R.L. Monroe D.R. “Fuel Sulfur Effects on the Performance of Automotive Three-Way Catalysts during Vehicle Emissions Tests,” SAE Transactions , paper 811228 1981
- Benson J.D. Burns V. Gorse R.A. Hochhauser A.M. Koehl W.J. Painter L.J. Reuter R.M. “Effects of Gasoline Sulfur Level on Mass Exhaust Emissions -- Auto/Oil Air Quality Improvement Research Program,” SAE Special Publication SP-920, paper 912323 1991
- “Effects of Fuel Sulfur on Mass Exhaust Emissions, Air Toxics, and Reactivity,” Auto/Oil Air Quality Improvement Research Program Technical Bulletin No. 8 February 1992
- Jensen T.E. Siegl W.O. Richert J.F.O. Lipari F. Loo J.F. Prostak A. Sigsby J.E. “Advanced Emission Speciation Methodologies for the Auto/Oil Air Quality Improvement Research Program -- I. Hydrocarbons and Ethers,” SAE Special Publication SP-920, paper 920320 1992
- Swarin S.J. Loo J.F. Chladek E. Drouillard M.S. Tejada S.B. “Advanced Emission Speciation Methodologies for the Auto/Oil Air Quality Improvement Research Program -- II. Aldehydes, Ketones, and Alcohols,” SAE Special Publication SP-920, paper 920321 1992
- Carter W.P.L “Development of Ozone Reactivity Scales for Volatile Organic Compounds,” Statewide Air Pollution Research Center Riverside, CA, U.S. EPA Contract CR-814396-02-0 April 1990
- CARB Board Hearing on Reactivity Adjustment Factors Sacramento, CA November 14 1991
- “Emissions and Air Quality Modeling Results from Methanol/Gasoline Blends in Prototype Flexible/Variable Fuel Vehicles,” Auto/Oil Air Quality Improvement Research Program Technical Bulletin No. 7 January 1992
- SAS Institute, Inc. Cary, N.C.
- Painter L.J. Rutherford J.A. “Statistical Design and Analysis Methods for the Auto/Oil Air Quality Improvement Research Program,” SAE Special Publication SP-920, paper 920319 1992
- Kramer C.Y. “Extension of Multiple Range Tests to Group Means with Unequal Numbers of Replications,” Biometrics 12 307 310 1956
- Amann C.A. “The Passenger Car and the Greenhouse Effect,” SAE paper 902099 1990
- Hamai K. Mitsumoto H. Iwakiri Y. Ishihara K. Ishii M. “Effects of Clean Fuels (Reformulated Gasolines, M85, and CNG) on Automotive Emissions,” SAE paper 922380 1992