微粒捕集器喷油率对再生温度影响的仿真分析与优化  

Simulation analysis and optimization of the effect of Diesel Paeticle Filter fuel injection rate on the regeneration temperature

作　　者：邓伟[1] 孙后环[1] 

机构地区：[1]南京工业大学机械与动力工程学院,江苏南京211816

出　　处：《节能》2016年第2期11-13,2,共3页Energy Conservation

基　　金：江苏省第九批六大人才高峰高层次人才资助项目(项目编号:2012-ZBZZ-047)

摘　　要：对于柴油机微粒排放后处理问题,可通过喷油助燃再生的方法来实现。再生温度对柴油机微粒过滤器(DPF)内部冲击造成过滤器内部温度受热很难达到均匀,易造成热应力破坏。结果表明:在微粒过滤器(DPF)喷油助燃再生过程中,不同的喷油率值对DPF内部峰值温度的影响也不同。提高喷油率可以增加燃烧功率,但喷油率提高后,排气中氧含量减少,燃烧效率下降导致再生速率下降。因此对于排气中氧含量的增加尤为必要。The wall flow honeycomb ceramic as filter material,we adopt renewable fuel injection method to solve the particle emission in diesel engine after treatment.Regeneration temperature of Diesel Particulate Filter(DPF) internal impact caused by the internal temperature of the filter is difficult to achieve uniform,easy to cause thermal stress damage.The results showed that in the Diesel Particulate Filter(DPF) fuel injected regeneration process and injection rate on the DPF internal temperature does not have a significant effect.Increasing fuel injection rate can increase the burning power,but the fuel injection rate is increased,the oxygen content in the exhaust gas is reduced,and the combustion efficiency decreases.This need to increase the oxygen content in the exhaust to increase.

关 键 词：柴油机 微粒过滤器 喷油助燃 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]