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The Influence of Gasoline Formulation on Combustion and Emissions in Spark-Ignition Engines
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Abstract
Regulated and some unregulated emissions of a medium size non catalyst vehicle obtained with different formulations of unleaded fuels have been measured.
Among the unregulated pollutants, 1-3 butadiene, benzene, toluene and polycyclic aromatic hydrocarbons (PAH) have been considered because of their toxicological hazards [ 1 ]. The emission levels have been compared with the ones obtained in similar conditions using a leaded reference fuel.
Cold start Europe cycle and two not standard cycles have been used as basis of comparison for pollutants measurements.
The effect of a three way catalytic system, fitted on the same vehicle, on regulated and unregulated emissions has been also studied, evaluating the conversion efficiency for the different pollutants.
The same fuels have been tested in the same driving conditions on a small size passenger car too, equipped by the factory with catalyst and closed loop control system.
It has been shown that benzene and toluene content in the exhaust depends on their original concentration in the fuel.
The performance of catalytic after-treatment system is satisfactory even if no closed loop control is provided.
Driving conditions play a fundamental role on regulated and unregulated emissions independently of the presence of an exhaust treatment device.
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Citation
DePetris, C., Giglio, V., Police, G., and Prati, M., "The Influence of Gasoline Formulation on Combustion and Emissions in Spark-Ignition Engines," SAE Technical Paper 932679, 1993, https://doi.org/10.4271/932679.Also In
References
- Fawell J.K. Hunt S. “Environmental Toxycology: Organic Pollutants” Ellis Horwood Limited 1988
- Dempster N.M. Shore P.R. “An Investigation into the Production of Hydrocarbon Emissions from a Gasoline Engine Tested on Chemically Defined Fuels” SAE Paper 900354 1990
- “Polycyclic Aromatic Hydrocarbons: Evaluation of Sources and Effects” National Research Council National Academy Press Washington, D.C. 1983
- “Chemical and Biological Characterization of Exhaust Emissions from Vehicles Fueled with Gasoline, Alcohols, Lpg and Diesel” National Swedish Environment Protection Board Report Egeback K.E. Bertilsson B.M. 1987
- “Environment and Quality of Life” Final Report of the Commission of the European Communities 1 1989
- “Evaluation of Carcinogenic Risks to Humans” International Agency for Research on Cancer monograph 46 1988
- Huynh Ngoc-Hoa Richter H. Reders K. H. “The Impact of Gasoline Formulation on Engine Performance and Exhaust Emissions” SAE Paper 920297 1992
- De Petris C. Giglio V. Police G. Prati M.V. Rapone M. “The Effect of Gasoline Formulation on Regulated and Unregulated Emissions of Spark Ignition Engines” Paper 920253 1992
- “Demonstration Program Clean/Fuel Efficient Cars” TNO Report 1986
- Grimmer G. “Analysis of Automobile Exhaust Condensates” IARC Scientific publication 16 29 39 1977
- “Unregulated Motor Vehicle Exhaust Gas Components” Volkswagen AG report 1989
- Prigent M.F. Martin B.C. Guibet J.C. “Engine Bench Evaluation of Gasoline Composition Effect on Pollutants Conversion Rate by a Three-Way Catalyst” SAE Paper 900153 1990