| 柴油机后处理DOC+DPF性能试验研究 |
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| 引用本文： | 鲍建军,刘西文,王梦华,郁岩,郭赛.柴油机后处理DOC+DPF性能试验研究[J].拖拉机与农用运输车,2020(2):37-40. |
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| 作者姓名： | 鲍建军 刘西文 王梦华 郁岩 郭赛 |
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| 作者单位： | 拖拉机动力系统国家重点实验室 |
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| 摘 要： | 在一台非道路国四用高压共轨柴油机上,利用试验台架研究了柴油机后处理柴油氧化催化器(diesel oxidtation catalyst,DOC)、柴油颗粒过滤器(diesel particulate filter,DPF)在不同温度条件下内部的化学特性。结果表明,在一定温度条件下,DOC对未燃HC、CO具有较高的转化效率,对NO的催化氧化效率随温度升高先升后降;同时,催化剂和NO2有助于降低炭烟燃烧所需的化学活化能,提高炭烟燃烧速率。研究结果对深入理解柴油机后处理DOC+DPF的工作过程具有重要的指导作用。
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| 关 键 词： | 柴油机 平衡点温度 炭烟燃烧速率 |
Experimental Study of Performance of DOC and DPF on Diesel Engine |
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| BAO Jianjun,LIU Xiwen,WANG Menghua,YU Yan,GUO Sai.Experimental Study of Performance of DOC and DPF on Diesel Engine[J].Tractor & Farm Transporter,2020(2):37-40. |
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| Authors: | BAO Jianjun LIU Xiwen WANG Menghua YU Yan GUO Sai |
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| Institution: | (State Key Laboratory of Power System of Tractor,Luoyang Tractor Research Institute Co.,Ltd.,Luoyang 471039,China) |
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| Abstract: | On a ChinaⅣnon-road high-pressure rail diesel engine,the chemical characteristic of DOC(diesel oxidation catalyst)and DPF(diesel particulate filter)in different temperatures is investigated on test bed.The test results show that DOC has a higher conversion efficiency on unburned HC and CO,and catalytic oxidation rate of NO x increases at first and then decreases with the increasing of temperature.At the same time,catalyst and NO x contribute to reduce the chemical activation energy for soot combustion and increase soot combustion rate.The research result can provide a significant guidance for understanding deeply the working process of DOC and DPF on diesel engine. |
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| Keywords: | Diesel engine Balance point temperature Soot combustion rate |
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