This content is not included in your SAE MOBILUS subscription, or you are not logged in.
A CFD Analysis of a Multi-Fuel Injection System Rail
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 29, 2007 by SAE International in United States
Annotation ability available
Flexibility in running with different fuel is becoming an important issue in the Internal Combustion Engine design due to the increasingly wider use of alternative fuels. The injection systems must deal with fuels having different properties and effects on engine behavior and take proper adjustments in the control strategy. Particularly the transient during which one fuel is being replaced by the second one is a critical point of the injection system operation, and its capability of recognizing the fuel mixture currently available is a fundamental matter in the engine control development.
This paper focuses on the multidimensional CFD analysis of a Common Rail type multi-fuel injection system accumulator during the gasoline - ethanol shift. An open source computational fluid dynamics code was used in the modeling. A preliminary analysis of an experimental test case available in literature was carried out; different grid resolutions were employed in the simulations in order to asses their influence on the interface and distribution of the fluids. Finally the multi-fuel rail dynamic behavior was investigated under limiting operating conditions, and its effects on the engine functioning are discussed.
CitationFranzoni, F., Milani, M., and Montorsi, L., "A CFD Analysis of a Multi-Fuel Injection System Rail," SAE Technical Paper 2007-01-4020, 2007, https://doi.org/10.4271/2007-01-4020.
- Giroldo, M. B. Makant, W. Werninghaus, E. Coelho, E. P. D. Development of 1.6L Flex Fuel Engine for Brazilian Market SAE 2005-01-4130 2005
- Baêta, J. G. C. Valle, R. M. Amorim, R. J. Barbosa de Deus, J. R. Barros, J. E. M. Bahia de Carvalho, R. D. A New Concept of a Flex Multi-Fuel Engine SAE 2004-01-3427 2004
- Golovitchev, V.I. Montorsi, L. Denbratt, I. Corcione, F. E. Coppola, S. Numerical Evaluation of Direct Injection of Urea as NOx Reduction Method for Heavy Duty Diesel Engines SAE 2007-01-0909 2007
- Salsing, H. Rinaldini, C. A. Golovitchev, V.I. Denbratt, I. Performance and Emissions of a DME Diesel Engine Equipped With a Fuel-Specific, Common-Rail System SAE 2006-08-0251 2006
- Montorsi, L. Magnusson, A. Andersson, S. Jedrzejowski, S. Numerical and experimental analysis of the wall film thickness for diesel fuel sprays impinging on a temperature-controlled wall SAE 2007-01-0486 2007
- OpenFoam, User Guide April 2007
- Ashgriz, N Poo, J. Y. FLAIR: fux line - segment model for advection and interface reconstruction J. Comp. Phys. 93 449 468 1991
- Chen, L. Garimella, A. V. Reizes, J. A. Leonardi, E. The development of a bubble rising in a viscous liquid J. Fluid Mech. 387 61 96 1999
- Hirt C. W. Nicols B. D. Volume of Fuid (VOF) method for the dynamics of free boundaries J. Comp. Phys. 39 20 225 1981
- Rider W. J. Kothe D. B. Stretching and tearing interface tracking methods Technical Report LA-UR-98-1145 and AIAA Paper 95-1717 Los Alamos National Laboratory 1998
- Rudman M. Volume-tracking methods for interfacial ow calculations Int. J. Num. Meth. Fluids 24 671 691 1997
- Luo, P. Cheng, Y. Zhao, Y. Jin, Y. Yang, W. Millisecond mixing of two liquid streams in a mixer model Chemical Engineering Science J. 2007