半流式DPF排气背压和过滤效率公式的建立  

Establishment of the Exhaust Back Pressure and Filtration Efficiency Equation for Partial-Flow Diesel Particulate Filters

作　　者：龚为佳[1] 沈卫东[1] 徐嘉锋[1] 李建平[2] 

机构地区：[1]重庆通信学院军事目标特征控制总参重点实验室 [2]73881部队

出　　处：《柴油机》2011年第2期16-19,共4页Diesel Engine

摘　　要：分析了半流式DPF的工作原理,建立了其排气背压和过滤效率的数学公式,试验验证了公式的正确性,能够较准确地计算半流式DPF的排气背压和过滤效率;半流式DPF在柴油机排气后处理领域有良好应用效果。The working principle of partial flow DPF is analyzed. The mathematical formulas of exhaust back pressure and filtration efficiency were set up, and through experiments, the formulas were verified to be correct, which could be used to calculate the back pressure and filtration efficiency accurately. Partial flow DPF would have excellent application effect in exhaust after-treatment field.

关 键 词：半流式DPF 排气背压 过滤效率 数学模型 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]