Understanding and Improving Evaporative Engine Cooling at High Load, High Speed by Engine Tests and 3D Calculations 971792
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.
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. Download Citation
P. A. Porot, P. Ménégazzi, N. S. Ap
Institut Francais Du Petrole, Valeo Thermal Systems
1995 Vehicle Thermal Management Systems Conference and Exhibition
1997 Vehicle Thermal Management Systems Conference Proceedings-P-314, SAE 1997 Transactions - Journal of Engines-V106-3