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Development of a One-Dimensional Engine Thermal Management Model to Predict Piston and Oil Temperatures
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 12, 2011 by SAE International in United States
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A new, 1-D analytical engine thermal management tool was developed to model piston, oil and coolant temperatures in the Ford 3.5L engine family. The model includes: a detailed lubrication system, including piston oil-squirters, which accurately represents oil flow rates, pressure drops and component heat transfer rates under non-isothermal conditions; a detailed coolant system, which accurately represents coolant flow rates, pressure drops and component heat transfer rates; a turbocharger model, which includes thermal interactions with coolant, oil, intake air and exhaust gases (modeled as air), and heat transfer to the surroundings; and lumped thermal models for engine components such as block, heads, pistons, turbochargers, oil cooler and cooling tower. The model was preliminarily calibrated for the 3.5L EcoBoost™ engine, across the speed range from 1500 to 5500 rpm, using wide-open-throttle data taken from an early heat rejection study.
The model accurately predicts oil sump temperatures, coolant engine-out temperatures and peak piston temperatures for steady-state, WOT conditions, across the speed range. Also, the model predicts warm-up oil sump temperatures within the experimental test data variation, and predicts warm-up coolant temperatures within ± 5°F. With further calibration, it is expected that this model may provide design guidance to determine the effects of piston squirter oil flow rates on piston temperature and on cold-start oil warm-up temperatures.
The current model uses experimental coolant energy to estimate the combustion energy input. To enhance the predictive capability, this model should be further calibrated using data from additional engine configurations and from piston heat transfer engine or bench tests. Additionally, an in-cylinder heat release model should be included as a replacement for the experimental coolant energy input.
CitationSangeorzan, B., Barber, E., and Hinds, B., "Development of a One-Dimensional Engine Thermal Management Model to Predict Piston and Oil Temperatures," SAE Technical Paper 2011-01-0647, 2011, https://doi.org/10.4271/2011-01-0647.
- Heywood, J.B., “Internal Combustion Engine Fundamentals”, McGraw-Hill, New York, ISBN 0-07-028637-X, 1988.
- LMS Imagine.Lab, AMESim, http://www.lmsintl.com/imagine-amesim-1-d-multi-domain-system-simulation, September 2010.
- daSilva, A.K., Lebrun, M., and Samuel, S., “Modeling and Simulation of a Cooling System using MultiPort Approach,” SAE Technical Paper 2000-01-0292, 2000, doi:10.4271/2000-01-0292.
- Senatore, A., Cardone, M., Buono, D., Doha, E.P. et al., “Thermo-Fluid-Dynamic Analysis of a High Performance Engine Cooling System,” SAE Technical Paper 2007-24-0061, 2007, doi:10.4271/2007-24-0061.
- LeBrun, M., Meillier, R., Patron, L.B., and Samuel, S., “Polymorphic Modeling Applied to Vehicle Thermal Management,” SAE Technical Paper 2000-01-0293, 2000, doi:10.4271/2000-01-0293.
- Gamma Technologies, GT-Suite, http://www.gtisoft.com/products/p_GT_SUITE.php, September 2010.
- Ricardo, Wave, http://www.ricardo.com/en-gb/What-we-do/Software/Products/, September 2010.
- Hasebe, T., Kaminishizono, T., Arai, F., Machida, S., Fujikake, K., and Takahashi, R., “A thermal analysis of a spark ignition engine piston”, 82019, Proceedings of the XIX International FISITA Congress, Melbourne, Australia, Nov. 1982.
- Li, C.-H.,, “Piston Thermal Deformation and Friction Considerations,” SAE Technical Paper 820086, 1982, doi: 10.4271/820086.
- Takeuchi, Y., Akimoto, K., Noda, T., Nozawa, Y., and Yamada, T., “Experimental and Numerical Investigation of Heat Absorption Characteristics by Engine Oil in a Piston Cooling Channel”, SAE 2006-05-0241, 2006.
- Varghese, M.B., Goyal, S.K., and Agarwal, A.K., “Numerical and Experimental Investigation of Oil Jet Cooled Piston,” SAE Technical Paper 2005-01-1382, 2005, doi:10.4271/2005-01-1382.
- Rasihhan, Y. and Wallace, F.J., “Piston-liner thermal resistance model for diesel engine simulation. Part 1: formulation and tuning”, Proc Instn Mech Engrs, Vol. 205, I MechE 1991.
- Singh, V.P., Upadhyay, P.C., and Samria, N.K., “Some heat transfer studies on a diesel engine piston”, Technical Note, Int. J. Heat Mass Transfer, vol. 29, No. 5, pp. 812-814, 1986
- Mierbach, A., Duck, G.E., and Newman, B.A., “Heat Flow through Piston Rings and Its Influence on Shape,” SAE Technical Paper 831283, 1983, doi: 10.4271/831283.
- Yoshida, M., Yasuo, H., and Sato, K., “Variation of Heat Flux through Combustion Chamber Wall of Pre-Chamber type Diesel Engine (Heat Flux through Piston Crown, Cylinder Head, Suction Valve, Exhaust Valve, Pre-Combustion Chamber and Exhaust Port Wall), Paper No. 201-17, Bull. JSME, Vol. 25, No. 201, March 1982.
- Woschni, G. and Fieger, J., “Determination of Local Heat Transfer Coefficients at the Piston of a High Speed Diesel Engine by Evaluation of Measured Temperature Distribution,” SAE Technical Paper 790834, 1979, doi: 10.4271/790834.
- Schelling, H., “Temperature and Oil Flow Measurements on the Engine”, Mahle Piston Symposium, Germany, 1973.
- French, C.C.J, “Piston Cooling,” SAE Technical Paper 720024, 1972, doi: 10.4271/720024.
- Pachernegg, S.J., “Heat Flow in Engine Pistons,” SAE Technical Paper 670928, 1967, doi: 10.4271/670928.