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Computation of Instantaneous Air Flow and Volumetric Efficiency
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English
Abstract
The presentation here of a computer program simulating an engine cycle emphasizes mechanical factors under the control of the engine designer rather than scientific aspects of combustion. Data secured by measuring valves, manifolds, and other parts on a flow bench are used to calculate instantaneous flow in and out of the cylinder for the firing engine. Heat transfer, finite time of combustion, and variable specific heat of the gas are also calculated. The program is particularly well adapted to indicating the direction and relative magnitude of the effect of changing one variable, such as valve size, at a time.
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Authors
Citation
Huber, P. and Brown, J., "Computation of Instantaneous Air Flow and Volumetric Efficiency," SAE Technical Paper 640832, 1964, https://doi.org/10.4271/640832.Also In
References
- Bishop I. N. “An Analysis of Engine Friction and Economy.” SAE Transactions 73 1965 334 358
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- Patterson D. J. “A Comprehensive Cycle Analysis and Digital Computer Simulation for Spark Ignited Engines,” Ph. D.Thesis, University of Michigan 1962
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- McAdams W. H. “Heat Transmission,” 3d ed. New York McGraw-Hill Book Company, Inc. 1954
- Ede A. S. “Effect of Right Angled Bend on Heat Transfer in a Pipe,” International Heat Transfer Conference Part III London, England 1961
- Rassweiler Withrow “High Speed Motion Pictures of Engine Flames Correlated with Pressure Cards,” SAE J. May 1938
- Unpublished reduction by method of Ref. 9 of indicator cards taken by Wallace and Robison (SAE Paper No. 471E, 1962) and during associated work.