Improvement of Piston Top Temperature Analysis Using Intake Process CFD Simulation
Cooling effect of intake air on piston top temperature distribution of a gasoline engine was investigated experimentally and numerically.Piston top temperature was measured by using temperature plug during a dynamometer engine test.It was found that the piston top temperature at intake side was lower than that at exhaust side because of the intake air cooling effect.Computational fluid dynamics (CFD) simulation of air intake process was employed to analyze the cooling effect of intake air on the piston top.Heat transfer at the piston top during air intake process was obtained by CFD simulation and was used to correct the thermal boundary conditions for piston temperature analysis.The simulation result was verified by the measurement.The piston top temperature at intake side is lower than that at the exhaust side.CFD simulation of air intake process can be applied to correct the thermal boundary conditions and improve the accuracy of the piston temperature analysis.
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万方数据
维普
