车用空气滤清器的结构优化

Optimization of Vehicle Air Filter Structure

为有效提高车用空气滤清器的容灰量,采用无纺布层在前、滤纸层在后的双材双层滤芯结构,对车用空气滤清器的结构进行优化,并通过流体动力学(CFD)进行仿真与试验,确定无纺布层的最优厚度为8 mm。性能检测结果表明:选用8 mm无纺布方案后,空气滤清器压力降平均值为2.598 kPa,初期和终期过滤效率平均值分别为98.98%和99.43%,容灰量平均值为196 g。优化后的空气滤清器压力降、清净效率和粉尘捕捉量均满足性能参数的要求。

To increase its ash content,double-layer filter elements with non-woven fabric as surface and filter paper as depth were used to optimize the structure of the vehicle air filter.CFD simulation experiment indicates that the non-woven fabric layer at 8 mm thick has the optimal function.By this structure,the average pressure drop of air filter is 2.598 kPa,the average filtration efficiency is 98.98%and 99.43%at the initial and final stages respectively,and the average ash content is 196 g.The pressure drop,cleaning efficiency and dust capture of the optimized air filter meet the requirements of performance parameters.