A Model for Drilled Cooling in the Valve Bridge of Cylinder Head
To evaluate the efficiency of drilled cooling in the valve bridge of cylinder head, theoretical analysis for the drilled cooling is carried out, and a mathematical model for the enhanced cooling is presented based on a simplified 3D model. The mathematical model is validated by numerical study on the heat transfer with and without drilled cooling, which is carried out through fluid-solid coupling. The correlation between the velocity in the drilled passage and heat transfer coefficient was also analyzed. The results can be used to solve the heat transfer in enhanced diesel engine.
X. Liu et al., "A Model for Drilled Cooling in the Valve Bridge of Cylinder Head", Applied Mechanics and Materials, Vols. 52-54, pp. 338-342, 2011