A vehicle exhaust gas treatment device includes an exhaust passage, a mixing chamber, a nozzle and a reductant tank. The exhaust passage includes a draft tube, and the draft tube has a first end and a second end. The mixing chamber communicates with the exhaust passage, and the nozzle is disposed at one end of the mixing chamber. The reducing agent tank is connected to the nozzle. Wherein, the first end of the draft tube is connected to the exhaust passage, and the second end of the draft tube is connected to the mixing chamber, and the diameter of the first end is larger than the diameter of the second end.

Applied Country	Category	專利狀態	證書號	專利權期間	研究成果公告日期
CN	Other categories technology	獲證	CN104420948B	2017/04/12~2033/09/10