发明名称 |
REDUCTANT AQUEOUS SOLUTION MIXING DEVICE AND EXHAUST AFTERTREATMENT DEVICE PROVIDED WITH THE SAME |
摘要 |
A mixing device includes: an elbow pipe attached to an outlet pipe of a filter device, the elbow pipe changing a flow direction of an exhaust gas flowing from the filter device; a straight pipe connected to a downstream side of the elbow pipe, the straight pipe extending in a direction intersecting an axial line of the outlet pipe; an injector attached to the elbow pipe and injecting a reductant aqueous solution inside the elbow pipe toward the straight pipe; and a mixing pipe disposed in the elbow pipe to serve as a cover for the reductant aqueous solution, the mixing pipe being provided with openings on a circumferential wall thereof. A cutout is provided at a fixing portion of the mixing pipe with the elbow pipe at a position for allowing the exhaust gas entering through an inlet of the elbow pipe to flow toward the injection nozzle. |
申请公布号 |
US2014196440(A1) |
申请公布日期 |
2014.07.17 |
申请号 |
US201314000481 |
申请日期 |
2013.01.17 |
申请人 |
Katou Takashi;Tomioka Hiroyuki;Itou Boku |
发明人 |
Katou Takashi;Tomioka Hiroyuki;Itou Boku |
分类号 |
F01N3/10 |
主分类号 |
F01N3/10 |
代理机构 |
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代理人 |
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主权项 |
1. A reductant aqueous solution mixing device interposed between a filter device that captures particulate matters in an exhaust gas and a selective catalytic reduction device disposed downstream of the filter device, the reductant aqueous solution mixing device adding a reductant aqueous solution in the exhaust gas, the reductant aqueous solution mixing device comprising:
an elbow pipe attached to an outlet pipe of the filter device, the elbow pipe changing a flow direction of the exhaust gas flowing from the filter device; a straight pipe connected to a downstream side of the elbow pipe, the straight pipe extending in a direction intersecting an axial line of the outlet pipe of the filter device; an injector attached to the elbow pipe, the injector injecting the reductant aqueous solution into an inside of the elbow pipe toward the straight pipe; and a mixing pipe disposed in the elbow pipe to serve as a cover for the reductant aqueous solution injected from the injector, the mixing pipe being provided with a plurality of openings on a circumferential wall thereof, wherein a cutout is provided to a portion of the mixing pipe fixed with the elbow pipe at a position adapted to allow the exhaust gas flowing through the inlet of the elbow pipe to flow toward the injection nozzle of the injector. |
地址 |
Oyama-shi JP |