The Design of Cylinder Head for a Heavy-duty Four-valve Diesel Engine

Based on empirical design,an optimal design of the cylinder head for a heavy-duty four-valve diesel engine is carried out by combining the techniques of computational fluid dynamics(CFD) and finite element analysis(FEA),in which the volume and flow distribution of coolant in cylinder head are quantitatively determined by CFD,while the temperature distribution and fatigue safety factor of cylinder head are predicted by FEA.The temperature of cylinder head is measured and engine reliability test is conducted.The results show that the cylinder head operates reliably and the measured temperatures well agree with numerical results,which prove the effectiveness of the cylinder head design method presented.