高性能商用车用散热器轻量化设计

Lightweight design of high performance radiators for a commercial vehicle

为提高商用车冷却模块散热性能,实现冷却模块轻量化,采用计算流体动力学方法分析散热器的散热带高度、波峰距、开窗角度对散热性能的影响,得到最佳冷却模块性能参数;对散热器结构进行优化,并对优化后的散热器进行风洞试验和整车热平衡试验。结果表明:优化后的散热器质量减轻17.9%,散热性能提升1%~8%;通过优化散热带高度、波峰距以及开窗角度,可以提高冷却模块散热性能,实现轻量化,降低生产成本。

In order to improve the heat dissipation performance of commercial vehicle cooling modules and achieve lightweight cooling modules,computational fluid dynamics method is used to analyze the effects of the height of the heat dissipation strip,wave peak distance,and window opening angle of the radiator on heat dissipation performance.The optimal performance parameters of the cooling module are obtained,and the radiator structure is optimized based on simulation results.Wind tunnel tests and vehicle thermal balance tests are conducted on the optimized radiator.The results show that the mass of the optimized radiator is reduced by 17.9%and heat dissipation performance is improved by 1%-8%.Optimizing the height of the heat dissipation strip,peak to peak distance,and window opening angle can improve the heat dissipation performance of the cooling module,achieve lightweight,and reduce production costs.