This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
The Effect of Fuel Hydrocarbon Composition on Exhaust Hydrocarbon and Oxygenate Emissions
Annotation ability available
Sector:
Language:
English
Abstract
Fuel-exhaust compositional relationships are derived for exhaust hydrocarbons and aldehydes using data obtained with 18 full-boiling-range gasolines used as fuel in a late model vehicle. The agreement found between the data from the present work and those obtained by others in similar studies indicates that the relationships should be sufficiently general to apply to a large segment of the current vehicle population. The present data indicate that aromatic hydrocarbon and aromatic aldehyde emissions are linearly related to fuel aromatic content, while exhaust olefin and aliphatic aldehyde emissions show an inverse relationship. Regression analysis of the aromatic hydrocarbon and aromatic aldehyde data, expressed as a function of fuel aromaticity, gives fuel aromatic coefficients of 0.49 and 0.41 for the hydrocarbon and aldehyde expressions, respectively. Exhaust photochemical reactivity calculations, using a composite reactivity scale, predict that fuel aromatic content has little influence on exhaust reactivity. The fuel-exhaust compositional relationships are shown to be insensitive to the nature of the driving cycle. A comparison of data obtained using the 1968, 1972, and 1975 federal test procedures show the existence of only minor differences in exhaust composition. However, elimination of the cold start from the 1972 test procedure did have a significant effect on the results.
Recommended Content
Authors
Citation
Wigg, E., Campion, R., and Petersen, W., "The Effect of Fuel Hydrocarbon Composition on Exhaust Hydrocarbon and Oxygenate Emissions," SAE Technical Paper 720251, 1972, https://doi.org/10.4271/720251.Also In
References
- Fleming R. D. “Effect of Fuel Composition on Exhaust Emissions from a Spark-Ignition Engine.” Bureau of Mines, RI No. 7423 September 1970
- Dishart K. T. Harris W. C. “The Effect of Gasoline Hydrocarbon Composition on Automotive Exhaust Emissions.” Proc Am. Petrol. Inst., Div. Refin. 48 1968 612 642
- Eccleston B. H. Hurn R. W. “Comparative Emissions from Some Leaded and Prototype Lead-Free Automobile Fuels.” Bureau of Mines, RI No. 7390 May 1970
- Oberdorfer P. E. “The Determination of Aldehydes in Automobile Exhaust Gas.” SAE Transactions 76 paper 670123
- Wodkowski C. S. Weaver E. E. “The Effects of Engine Parameters, Fuel Composition, and Control Devices on Aldehyde Exhaust Emissions.” Fall Meeting of West Coast Section APCA San Francisco Oct. 8 1970
- U.S. Department of Health, Education and Welfare “Control of Air Pollution from New Motor Vehicles and New Motor Vehicle Engines.” Part II. Federal Register 35 219 Nov. 10 1970
- “Selected Methods for the Measurement of Air Pollutants.” USPHS Publ. No. 999, AP-11 May 1965
- U. S. Department of Health, Education and Welfare “Control of Air Pollution from New Motor Vehicles and New Motor Vehicle Engines.” Part II. Federal Register 31 61 Mar. 30 1966
- Seizinger D. E. Dimitriades B. “Oxygenates in Exhaust from Simple Hydrocarbon Fuels.” 64th Annual Meeting of APCA Atlantic City June 27 July 2 1971
- Dimitriades B. Wesson T. C. “Reactivities of Exhaust Aldehydes.” Bureau of Mines, RI No. 7527 May 1971
- Heuss J. M. Glasson W. A. “Hydrocarbon Reactivity and Eye Irritation.” 155th National Meeting of ACS San Francisco April 1968
- Stephens E. F. Darley E. F. Taylor O. C. Scott W. E. “Photochemical Reaction Products in Air Pollution.” Proc. API 40 3 1960 325 338
- Hinkamp J. B. Griffing M. E. Zutaut D. W. “Aromatic Aldehydes and Phenols in the Exhaust from Leaded and Unleaded Fuels.” Symposium on Current Approaches to Automotive Emission Control, Amer. Chem. Soc. Los Angeles Mar. 31 1971
- Environmental Protection Agency “Exhaust Emission Standards and Test Procedures.” 36 128 July 2 1971
- Ninomiya J. S. Golovoy A. “Effects of Air-Fuel Ratio on Composition of Hydrocarbon Exhaust from Isooctane, Diisobutylene, Toluene, and Toluene-n-Heptane Mixture.” SAE Transactions 78 1969 paper 690504
- Altshuller A. P. “An Evaluation of Techniques for the Determination of the Photochemical Reactivity of Organic Emissions.” Jrl. Air Poll. Cont. Assoc. 16 257 1966
- Coordinating Research Council Report No. 441 “The Effects of Leaded and Unleaded Gasolines on Exhaust Emissions Caused by Combustion Chamber Deposits.” June 1970
- Air Pollution Research Advisory Committee of the Coordinating Research Council, Inc. “Status Report.” January 1971 6
- Dimitriades B. Eccleston B. H. Hurn R. W. “An Evaluation of the Fuel Factor Through the Direct Measurement of Photochemical Reactivity of Emissions.” Jrl. Air Poll. Contr. Assoc. 20 150 1970
- Bailey B. S. “Discussion on Vehicle Control Systems.” Effect of Automotive Emission Requirements on Gasoline Characteristics, ASTM STP 487 1971 94 98
- Morris W. E. Dishart K. T. “Influence of Vehicle Emission Control Systems on the Relationship Between Gasoline and Vehicle Exhaust Hydrocarbon Composition.” Effect of Automotive Emission Requirements on Gasoline Characteristics, ASTM STP 487 1971 63 93