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Characterization of Combustion Chamber Deposits from a Gasoline Direct Injection SI Engine
Technical Paper
2003-01-0546
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Combustion chamber deposits (CCDs) from a gasoline direct injection stratified charge SI engine were analysed. The engine was run with two fuels: a typical European base fuel, containing 9.8% MTBE, and a low volatility worst case fuel. The worst case fuel is a standardized European fuel, CEC RF 86-A-96, prone to form deposits. It contains high amounts of aromatics and olefins but no MTBE. The deposits were analyzed in several ways; thermal desorption followed by gravimetric analysis, fast neutron activation analysis and solid-state 13C nuclear magnetic resonance spectroscopy.
Up to 50% of the deposits, formed inside the GDI engine, consist of volatiles. The composition of the deposits is strongly related to the composition of the engine oil.
The fraction of volatiles in the deposits decreased in the order: cylinder head, piston squish surface and piston bowl. The deposits from the piston squish surface contained the highest fraction of oxygen, about 30 %.
The non-volatile part of the deposits was highly oxidized. The organic oxygen in the non-volatile part was found in different types of carbon compounds: oxygenated aliphatics, carboxyls and carbonyls.
The fuels used in this study apparently did not significantly affect the content of oxygen and the volatile organic found in the deposits.
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Authors
- Farshid Owrang - Chalmers University of Technology, Department of Reactor Physics
- Håkan Mattsson - Chalmers University of Technology, Department of Reactor Physics
- Anders Nordlund - Chalmers University of Technology, Department of Reactor Physics
- Jim Olsson - Chalmers University of Technology, Department of Physical Chemistry and Arealia AB
- Jörgen Pedersen - Chalmers University of Technology, Department of Physical Chemistry and Arealia AB
Citation
Owrang, F., Mattsson, H., Nordlund, A., Olsson, J. et al., "Characterization of Combustion Chamber Deposits from a Gasoline Direct Injection SI Engine," SAE Technical Paper 2003-01-0546, 2003, https://doi.org/10.4271/2003-01-0546.Also In
References
- Sandquist, H. 2001 “Emission and Deposit Formation in Direct Injection Stratified Charge SI Engine” Thesis Chalmers University of Technology ISBN 91-7291-075-5
- Sandquist, H. Denbratt, I. Owrang, F. Olsson, J. O. 2001 “Influence of Fuel Parameters on Deposit Formation and Emissions in a Direct Injection Stratified Charge SI Engine” SAE paper 2001-01-05
- Chemistry of Engine Combustion Chamber Deposits 1985 Ebert, L. B. Plenum Press ISBN 0-306-41936-x
- Siegl, W. O. Zinbo, M. “On the Chemical Composition and Origin of Engine Deposits” pp 53 70 in 4 above
- Bachman, H. E. Prestridge, E. B. 1975 “The use of Combustion Deposit Analysis for Studying Lubricant Induced ORI” SAE Paper 750938
- Kim, C. Cheng, S. S. Majorski. S. A. 1991 “Engine Combustion Chamber Deposits: Fuel Effects and Mechanisms of Formation” SAE paper 912379
- Ebert, L. B. 1985 “The Chemistry of Internal Combustion Engine Deposits - Part I” pp 71 99 in 3 above
- Lauer, J. L. Friel, P. J. 1960 “Some Properties of Carbonaceous Deposits Accumulated in Internal Combustion Engines” Combust. Flame 4 107
- Pedersen, J. R. Strömberg K. Olsson, J. O. 1996 “Emissions from Slow Pyrolysis of Solid Fuels Studied by GC/MS in a Miniature Reactor” Combust. Sci. and Tech. 121 271 279
- Håkansson, Å. 2000 “Slow Pyrolysis of Spruce and Pine Samples Studied with GC/MS and GC/FTIR/FID Combustion Chemistry-investigation of Liquid and Solid Fuels” Chemosphere 36 2879 2889
- Nargolwalla, S. S. Przybylowicz E. P. 1973 “Activation Analysis with Neutron Generator” John Wily & Sons ISBN 0-471-63031-4
- De Soete, Gijbels Hoste 1972 “Neutron Activation analysis” 34 Wiley-Interscience ISBN 0-471-20390-4
- Mahajan, O. P. 1985 “Determination of Organic Oxygen Content of Coals” Fuel 64 7 973 980
- Ebert, L. B. 1985 “The Chemistry of Internal Combustion Engine Deposits - Part III” pp 119 144 in 3 above
- McKlveen, J. W. 1981 “Fast Neutron Activation Analysis, Elemental Data Base” Ann Arbor Science Publishers, Inc. ISBN 0-250-40406-0
- Browne, E. Firestone, R. B. Shirley, S. S. 1986 “Table of Radioactive Isotopes” John Wiley & Sons, New York ISBN 0-471-84909-X
- Yoshida, T. Maekawa, Y. 1986 “Characterization of Coal Structure by CP/MAS Carbon-13 NMR Spectroscopy” Coal Characterisation for Conversion Processes 1986 Edited by Moulijn J. A. Kapteijn F. Elsevier ISBN 0-444-42742-2
- Edwards, J., C. Choate, P. J. 1993 “Average Molecular Structure of Gasoline Engine Combustion Chamber Deposits Obtained by Solid-State 13 C, 31 P and 1 H Nuclear Magnetic Resonance Spectroscopy” SAE paper 932811
- Kelemen, S., R. Siskin, M. Homan, H., S. Pugmire R., J. Solum M., S. 1998 “Fuel, Lubricant and Additive Effects on Combustion Chamber Deposits” SAE paper 1998-27-15
- Benson., S. W. Nangia, P. S 1979 “Some Unresolved Problems in Oxidation and Combustion” Acc. Chem. Res. 12 223