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The Application of Steady-Flow Loss Correlations to Intake Manifold Design
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Abstract
Application of steady-flow correlations to characterize flow losses in complex piping systems is well established for non-transient fluid transport engineering. As a result, the literature contains numerous correlations relating flow (or pressure) losses to the piping system geometry. The present study applies these correlations to an intake manifold of a four cylinder engine to identify regions in the manifold that contribute most significantly to the system flow loss; results showed that the primary runner entrances accounted for over half of the total system loss. With this finding, four manifolds were designed and tested on a steady-flow bench and on an engine. Reduced flow losses resulted in improved peak engine performance at the expense of low speed volumetric efficiency. Primary runner pressures at peak performance conditions were analyzed in both the time and frequency domain.
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Citation
Tallio, K., Tobis, B., and Selamet, A., "The Application of Steady-Flow Loss Correlations to Intake Manifold Design," SAE Technical Paper 930608, 1993, https://doi.org/10.4271/930608.Also In
References
- Idelchik, I. E. Handbook of Hydraulic Resistance Washington: Hemisphere 1986
- Miller, D. S. Internal Flow Systems 2nd Bedford, England British Hydromechanics Research Association, The Fluid Engineering Centre 1990
- Chapman, M. Novak, J. M. Stein, R. A. Numerical Modeling of Inlet and Exhaust Flows in Multi-cylinder Internal Combustion Engines Flows in Internal Combustion Engines Uzkan T. ASME WAM Phoenix, Arizona 1982
- Wagner, T. C. Anderson, R. W. A Comprehensive Data Generation Facility for Internal Combustion Engine Evaluation and Development SAE 900166
- Heywood, John B. Internal Combustion Engine Fundamentals New York McGraw-Hill 1988
- Wylie, E. B. Streeter, V. L. Fluid Transients Ann Arbor, MI FEB Press 1983
- Fox, R. W. MacDonald, A. T. Introduction to Fluid Mechanics New York Wiley 1978
- Swamee, P. K. Jain, A. K. Explicit Equations for Pipe-flow Problems ASCE J. Hydraulics Division 102 657 664 1976