Research on Cylinder Head Thermal State Simulation

Abstract

The thermal state of the cylinder head has a huge influence on its fatigue and damage situation; therefore it is essential to accurately simulate the thermal state of the cylinder head during engine operation. In this paper, a method research of the cylinder head thermal state simulation test has been done. A thermal state simulation test bench has been launched, using induction heating and water-cooling to regulate the temperature. A series of cylinder head surface temperature field simulation tests has been accomplished. Compared to the actual engine test results, the temperature simulation results have an average error of less than 5% and a maximum error of 8.5% in these temperature test points. It turns out that the test bench can simulate the actual cylinder head temperature distribution accurately and will has significant effects on the research of the cylinder head thermal stress distribution and thermal fatigue situation.