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Correlation Between Instantaneous Pattern of Intake Air Motion and Combustion Behaviour in a S.I.Turbocharged Engine
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 16, 2007 by SAE International in United States
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Improvement of combustion efficiency is an effective way to increase engine torque and to reduce fuel consumption simultaneously. For gasoline engines, however, especially at medium and high load, combustion efficiency is limited by knock. It is well known that intake air motion into the cylinder influences combustion speed and knock resistance.
During the development activity of a S.I. (Spark Ignition) turbocharged engine it was noticed that not only the maximum intensity of air motion, but also its instantaneous pattern had an impact on combustion behaviour. A methodology which estimates the instantaneous pattern of intake air flow through the valves, based on in-cylinder pressure measurements and on flow test rig data, was found. A further verification of this methodology through a computational 1-D thermodynamic cycle model was performed. The methodology predictive capability was tested in terms of evaluating the effect on the combustion, i.e. on the engine torque, due to an engine intake system modification, with advantages in time spent during engine development activity.
CitationFormisano, G., Lucignano, G., Maresca, L., Polichetti, C. et al., "Correlation Between Instantaneous Pattern of Intake Air Motion and Combustion Behaviour in a S.I.Turbocharged Engine," SAE Technical Paper 2007-01-0937, 2007, https://doi.org/10.4271/2007-01-0937.
- Fiorenza R. Polichetti C. Torella E. Tortorella P. Pallotti P. Kapus P. Zingali A. “The FIRE 1.4l, 8V Turbo Gasoline Engine - High Performance at Low Cost” 17TH AVL “ENGINE & ENVIRONMENT” CONFERENCE 2005
- Uzkan T Borgnakke C Morel T “Characterization of Flow Produced by High-Swirl Inlet Port” SAE paper 830266 1983
- Heywood J.B. Higgins J. M. Watts P. A. Tabaczynski R. J. “Development and Use of a Cycle Simulation to Predict SI Engine Efficiency an NO x Emission” SAE paper 790191 1991
- Bozza F. Gimelli A. Merola S. S. Vaglieco B. M. “Validation of A Fractal Combustion Model through Flame Imaging” SAE 2005 Transaction Journal of Engines 114-3 973 987 0-7680-1689-4 2006
- Bozza F. Gimelli A. Russo F. Torella E. Strazzullo L. Mastrangelo G. 2005 “Application of a Quasi-Dimensional Combustion Model to the Development of a High-EGR VVT SI Engine” 7th International Conference ICE05 Internal Combustion Engines: Experiments and Modeling September 2005 Capri (NA) - Italy Proceedings distributed on CD-ROM 88-900399-2-2
- Woods W. A. Khan S. R. “An Experimental Study of Flow through Poppet Valves” proc. Instn Mech. Engrs. 180 32 41 1965-1966
- Kirillin V.A.. Sycev V.V. Sejndlin A.E.
- Heywood John B. “Internal Combustion Engine Fundamentals” McGraw Hill inc
- Halmos P. 1950 “Measure theory” D. van Nostrand and Co.
- Kolmogorov A. N. 1950 “Foundations of the theory of probability” Chelsea Publishing Company NY
- Gnedenko B. V.m
- Beligardi G.