低温等离子体协同木纤维净化柴油机尾气台架试验

Engine Bench Test of Purifying Diesel Exhaust Gas with Non-thermal Plasma Combined with Wood Fiber

依据线管式电晕放电等离子体净化NO与微小颗粒物(PM)的优势,结合微米木纤维滤芯自身的结构特点,设计了等离子木纤维净化器,并通过发动机台架试验对不同电压和不同温度条件下净化器性能进行试验。结果表明:电压和温度对净化器净化NO和PM的效率均有促进作用。随着净化器工作时间的增加,过滤阻力会不断增加,而净化器对NO和PM净化效率在工作7 h以内时是逐渐增加,当超过7 h以后净化效率几乎不再变化。

According to the advantages of line-pipe corona discharge plasma reactor in purifying NO and PM,combined with the structural characteristics of micron wood fiber filter,a plasma wood fiber purifier was designed.The performance of the purifier under different voltage and temperature was tested by engine bench test.The results show that both voltage and temperature can promote the purification efficiency of NO and PM.With the increase of the working time of the purifier,the filtration resistance will increase,while the purification efficiency of NO and PM will increase gradually when the purifier works within7h,and the purification efficiency will not change after more than7h.