In order to evaluate the dissipation performance of a motorcycle cooling system, based on computational fluid dynamics analysis method, a one-dimensional simulation analysis model of the motorcycle cooling system was built by GT-COOL module in GT-Suite software. The measured parameters of components performance and the radiator surface air velocity calculted by the three-dimensional flow field were used as one-dimensional analysis input parameters. The engine outlet temperature and engine coolant flow of the vehicle cooling system under the three working conditions of maximum torque point, maximum power point and maximum speed point were analyzed, and the model was verified by comparing with the thermal management test results of the vehicle.The results show that the simulation values of engine outlet temperature and engine coolant flow are basically consistent with the test values, of the vehicle, and the maximum errors are 3. 25％ and 6. 90％ respectively. In order to reduce the coolant outlet temperature of the engine, the structure of the radiator is improved, and the radiator is widened by 10 mm along the center line at both sides and raised by 13 mm upward, the coolant outlet temperature of the engine can be significantly improved. The motorcycle thermal management validation test shows that after the radiator structure improvement, the coolant outlet temperature of the engine under the three working conditions has been reduced, and the temperature has been reduced by 5 ℃, 8 ℃ and 5 ℃respectively. The results can provide data reference for cooling system performance evaluation and radiator structure improvement.
关键词
摩托车/冷却系统/一维分析/发动机出水温度/结构改进
Key words
motorcycle/cooling system/one dimensional analysis/coolant outlet temperature of engine/structural improvement
维普
万方数据