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The Independent Effect of Mid-Range, Back-End Volatility And Aromatics on Emissions from Two European Gasoline Engines
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 01, 1995 by SAE International in United States
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A set of designed fuels was tested in two European gasoline vehicles driven over the standard European Drive Cycle. Both regulated and speciated emissions were measured, together with HC, CO and NOx, pre- and post-catalyst.
The main fuel set was a 3 by 3 matrix, where mid-range volatility (T50) and aromatics were independently varied from 85°C to 115°C for T50 and from 25% vol. to 45% vol. for aromatics. Two further fuels, together with the centre point fuel from the main matrix, formed a back-end volatility (T90) subset experiment. The fuels were blended from mixtures of pure chemicals in order that the chemical and physical properties could be closely controlled and kept independent.
The findings of this two car trial are generally in line with the recent EPEFE programme and confirm that fuel changes which reduce one type of emissions (HC and CO) generally increase another (NOx) and vice versa. The study has also highlighted the importance of engine management and catalyst operation in determining emissions, in particular the important role of small variations in stoichiometry (F). Further, this study has shown that engine system technology influenced the vehicle's response to changes in fuel properties.
CitationWedekind, B., Bennett, P., Goodfellow, C., Jeffrey, J. et al., "The Independent Effect of Mid-Range, Back-End Volatility And Aromatics on Emissions from Two European Gasoline Engines," SAE Technical Paper 952522, 1995, https://doi.org/10.4271/952522.
- Auto/Oil Air Quality Improvement Research Program Phase 1 Final Report May 1993 CRC
- Auto/Oil Air Quality Improvement Research Program SAE Publication SP920
- Dawson, W.M. Palmer, EH. Agnetun, B. “The Fundamental Role of Gasoline Blending Components in Exhaust Emissions” Paper to Fifth EFOA conference 15 16 October 1992 Brussels
- Working Group European Commission - Industry Technical Group 1 “Effects of Gasoline Composition and Properties on Vehicle Emissions in Europe” 02 17 94
- European Programme on Emissions Fuels and Engine Technologies, Final Report
- Hochhauser, A.M. Benson, J.D. Bums, V. Gorse, R.A. Williams, J.K. Painter, L.J. Rippon, B.H. Reuter, R.M. Rutherford, J.A. “The Effect of Aromatics, MTBE, Olefins and 190 on Mass Exhaust Emissions from Current and Older Vehicles - The Auto/Oil Air Quality Improvement Research Program” SAE 912322
- Leppard, W.R. Benson, J.D. Gorse, R.A. Koehl, W.J. Burns, V.R. Hochhauser, A.M. Rapp, L.A. Knepper, J.C. Reuter, R.M. “How Heavy Hydrocarbons in the Fuel Affect Exhaust Mass Emissions: Modal Analysis - The Auto/Oil Air Quality Improvement Research Program” SAE 932724
- McArragher, J.S. Becker, R.F Betts, R.F Goodfellow, C.L. Floysand, S.A. Jeffrey, J.G. Morgan, T.D.B. Schmiedel, H-P. Scorletti, P Snelgrove, D.G. Zemroch, P.J. Hutcheson, R.C. “The Influence of Heavy Gasoline Components on the Exhaust Emissions of European Vehicles Part 1 - Regulated Emissions” CONCAWE report no. 94159
- Gething, J.A. “Distillation Adjustment: An Innovative Step to Gasoline Reformulation” SAE 910382
- Takeda, K. Yaegashi, T. Sekiguchi, K. Saito, K. “Mixture Preparation and HC Emissions of a 4 Valve Engine with Port Fuel Injection During Cold Starting and Warm-Up”
- Jessup, P.J Croudace, M.C. Wusz, T “An Overview of Unocal's Low Emission Gasoline Research Program” SAE 920801
- Jeffrey, J.G. Elliot, N.G. “Gasoline Composition Effect in a Range of European Vehicle Technologies” SAE 932680
- den Otter, G.J. Malpas, R.E. Morgan, T.D.B. “Effect of Gasoline Reformulation on Exhaust Emissions in Current European Vehicles” SAE 930372
- Jorgensen, S.W. Benson, J.D. “Simultaneous Measurements of Driveability and Emissions at Cool Ambient Temperatures” SAE 941870
- CONCAWE “The Influence of Gasoline Mid-Range to Back-End Volatility on Exhaust Emissions” Report No. 95/61
- Le Jeune, A. McDonald, C.R. Lee, G.R. “NOx/ Aromatics Effect in Catalyst-Equipped Gasoline Vehicles” SAE 941869
- Shore P.R. Humphries D.T. Hadded O. “Speciated HC Emissions from Aromatics, Olefinic and Parafinic Model Fuels” SAE 930373
- Jemma, C.A. Shore, P.R. Widdicombe, K.A. “Analysis of C1-C16 Hydrocarbons Using Dual Column Capillary GC: Application to Exhaust Emissions from Passenger Car and Motorcycle Engines” J. Chrom. Sci. Vol 33 34 48
- Carr, R.C. Starkman, E.S. Sawyer, R.F. “Influence of Fuel Composition on Emissions of Carbon Monoxide and Oxides of Nitrogen” SAE 700470
- Morgan, T.D.B den Otter, G.J. Lange, W.W. Doyon, J. Barnes, J.R. Yamashita, T. “An Integrated Study of the Effects of Gasoline Composition on Exhaust Emissions, Part I - Programme Outline and Results on Regulated Emissions” SAE 932678
- McArragher, J.S. McDonald, C.R. Morgan, T.D.B. Lange, W.W. “How much do Gasoline Properties Affect Emissions from European Cars?” Proc. 27th ISATA Conf. Aachen, Germany 31 st Oct 4th Nov 1994
- van den Brink, P.J. McDonald C.R. “The Influence of the Fuel Hydrocarbon Composition on NO Conversion in 3-way Catalysts: the NOx/ Aromatics Effect” SAE 952399
- McDonald, C.R. Shore, P.R. Lee, G.R. den Otter, G.J. Humphries, D.T. “The Effect of Gasoline Composition on Stoichiometry and Exhaust Emissions” SAE 941868
- Anon. Amending Directive 70/220/EEC on the Approximation of the Laws of the Member States relating to the measures to be taken against air pollution by emissions from motor vehicles Official Journal of the European Communities 1 106 1991
- Ninomiya J.S. Golovoy A. “Effects of Air/Fuel Ratio on the Composition of HC Exhaust from Isooctane, Diisobutylene, Toluene and Toluene+n-Heptane Mixture” SAE 690504
- Kameoka, A. Akiyama, K. Hosoi, K. “Effect of Gasoline Composition on Exhaust Hydrocarbon” SAE 941866