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Fuel Sulfate Content Influence in the Formation of Inorganics Components Deposits in the Engine Injectors with Technologies of Gasoline Direct Injection
Technical Paper
2012-36-0314
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The development of a four-stroke engine, spark ignition, with direct injection of fuel into the combustion chamber was an important initiative for the global automotive market. The thermodynamic potential of this type of engine and its significant improvement in fuel economy have meant this technology as focus of a large number of research projects, with the objective to understand, develop and improve the system of direct fuel injection.
However, to meet new emission limits set by Euro 5 specification, it was necessary to reevaluate the geometry design of the injector, which resulted in the development of a new component with a larger number of holes and with a diameter reduction (multi-holes injector). This change in the project aims to ensure a better spray, optimizing air / fuel ratio and, consequently, a better process of combustion inside the combustion chamber, satisfying the emission limits established by the applicable norms.
The processes for preparing the mixture, injection, atomization and air flow control inside the cylinder have been the main source of periodic publications that study the direct injection system. Therefore, this paper purpose is to evaluate the formation of inorganic deposits in the injectors using fuels formulated with different amounts of sulfate.
The engine used for running the tests was the EP6CDT of PSA Peugeot Citroën. For this study one has performed tests on test bench and in vehicles (road and dynamometer). Other vehicles, with the same technology available in Brazil, were also tested. The variables evaluated during the project were: the chemical composition of different fuels, the correction factor from the injection time (FRA) and flow through the injectors during the tests.
This study has indicated that the injector geometry modification, coupled with tested compositions of gasoline, resulted in the formation of deposits that will be discussed throughout this work.
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Authors
- Heder Fernandes - PSA Peugeot Citroen do Brasil
- Leonardo C. Braga - Pontif¡cia Universidade Catolica - PUC-Rio
- Ana Rosa Martins - Pontif¡cia Universidade Catolica - PUC-Rio
- Sergio L. Braga - Pontif¡cia Universidade Catolica - PUC-Rio
- Carlos Valois M. Braga - Pontif¡cia Universidade Catolica - PUC-Rio
Citation
Fernandes, H., Braga, L., Martins, A., Braga, S. et al., "Fuel Sulfate Content Influence in the Formation of Inorganics Components Deposits in the Engine Injectors with Technologies of Gasoline Direct Injection," SAE Technical Paper 2012-36-0314, 2012, https://doi.org/10.4271/2012-36-0314.Also In
References
- PARSINEJAD, Farzan BIGGS, Wilton “Direct Injection Spark Ignition Engine Deposit Analysis: Combustion Chamber and Intake Valve Deposits” SAE 2011-01-2110
- ARTERS, D. C. MACDUFF, M. J. “The effect on Vehicle Performance of Injector Deposits in a Direct Injection Gasoline Engine” SAE 2000-01-2021
- KINOSHITA, M. “Study of nozzle deposit formation mechanism for direct injection gasoline engines” Proceedings, JSAE No. 976 1997
- ZHAO, F. LAI, M. C. HARRINGTON, D.L. “Automotive spark-ignited direct injection gasoline engines”
- BOSCH, R. Manual de Tecnologia Automotiva 25 São Paulo Edgard Blücher 2005 1232
- GANESAN, V. Internal Combustion Engines 1 New York McGraw-Hill, Inc. 1995 540
- HEYWOOD, John B. Internal Combustion Engine Fundamentals 1 New York McGraw-Hill, Inc. 1988 930
- OBERT, E. F. Motores de Combustão Interna Porto Alegre Ed. Globo 1971 618
- TAYLOR, C. F. Análise dos Motores de Combustão Interna 1 São Paulo Edgard Blücher 1968 558