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Understanding and Improving Evaporative Engine Cooling at High Load, High Speed by Engine Tests and 3D Calculations
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English
Abstract
This paper deals with engine evaporative cooling on the VW TDI diesel engine at high heat rejection running points. Engine tests and thermohydraulic 3D computations inside the engine head are used. First, the basic engine is studied. Then, the flow rate corresponding to evaporation is determined. Around this flow rate, the influence of inlet coolant temperature and circuit pressure are studied. The engine tests and 3D calculations give hydraulic ways of improvements consisting in balancing the flows around the different cylinders. Geometrical modifications of the inside engine circuit (gasket....) are then tested to achieve these improvements.
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Authors
Citation
Porot, P., Ménégazzi, P., and Ap, N., "Understanding and Improving Evaporative Engine Cooling at High Load, High Speed by Engine Tests and 3D Calculations," SAE Technical Paper 971792, 1997, https://doi.org/10.4271/971792.Also In
References
- Ap N.S. Golm N. “New Concept for Engine Cooling System”
- Ménégazzi P. Trapy J. “A new approach to the modelling of engine cooling systems” proceedings of the 3rd IMechE Int. Conf. on Computers in Reciprocating Engines and Gas Turbines 1996 153 161
- Delingette H. Seguin O. Perrocheau R. Ménégazzi P. “Accuracy of 3D Reconstruction from CT-Scan Images for Inspection of Industrial Parts” Int. Conf. on Quality Control by Artificial Vision May 28-30 1997 Le Creusot (France)
- Chabard J. P. Metivet B. Pot G. Thomas B. “An efficient finite element method for the computation of 3D turbulent incompressible flows” Finite Element in Fluid Hemisphere publishing corporation 1992 8