This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Car Radiator Transient Response: Front - End Air Management
Technical Paper
912504
Annotation ability available
Sector:
Event:
Language:
English
Abstract
Cooling of low-drag cars can be very sensitive to front-end air management in hot environments. An iterative simulator of a car-engine-radiator system is presented which predicts the radiator temperature at idle after a heat soak. The procedure uses information gained under laboratory conditions at lower than boiling temperatures which is then used for thermal stability predictions. An estimate of the stored energy in the engine-bay at high temperature is needed.
The procedure offers a reasonably simple way of computer prediction of the coolant temperature of a radiator system and assessing the sensitivity of the various parameters. It also offers the potential for less testing-time in the environmental wind tunnel.
The analytical simulator appears to behave correctly in response to known state changes. Other than simulating one condition in a car, its ability to satisfactorily predict other conditions for other cars has not been established.
Authors
Citation
Saunders, J. and Udvary, T., "Car Radiator Transient Response: Front - End Air Management," SAE Technical Paper 912504, 1991.Also In
References
- Hird, T.G. Johnson P.W. Pitt, B. “Aerodynamic Improvements to Car Radiator Performance using a Wind Tunnel Facility,” Proc. 9th Australasian Fluids Conf. Auckland, N.Z. Dec. 1986
- Udvary, T. “Car Radiator Performance - Transient Response,” Final Year Undergraduate Project. Mechanical Engineering, Royal Melbourne Institute of Technology Melbourne, Australia October 1990
- Williams J. “An Automotive Front-End Design Approach for Improved Aerodynamics and Cooling,” SAE paper 850285 , SAE Congress Detroit Feb. 1985
- Corbel J.C. “An Original Simulation Method for Car Engine Cooling Systems: A Modular System,” SAE 870713 1987
- Fenton J. “Gasoline Engine Analysis for Computer Aided Design,” Mechanical Engineer Publications Ltd. London 1986
- Taylor C.F. “The Internal Combustion Engine in Theory and Practice,” 1 Thermodynamics, Fluid Flow Performance 2nd Ed. MIT Press 1980 266 291
- Beard R.A. Smith G.J. “A Method of Calculating the Heat Dissipation from Radiators to Cool Vehicle Engines.” Automotive Engineering Congress Detroit, Michigan January 11-15 1971