公开(公告)号：US20150167523A1

公开(公告)日：2015-06-18

申请号：US14404323

申请日：2013-06-19

Applicant: KOMATSU LTD.

Inventor： Katsuhiro Tsutsumi ,  Hirofumi MIiyamoto

IPC: F01N3/20 ,  F01N13/00

CPC classification number: F01N3/206 ,  B60K13/04 ,  B60Y2200/412 ,  E02F9/0866 ,  F01N3/021 ,  F01N3/035 ,  F01N3/10 ,  F01N3/2066 ,  F01N3/2882 ,  F01N13/009 ,  F01N13/011 ,  F01N13/08 ,  F01N13/1805 ,  F01N13/1816 ,  F01N13/1822 ,  F01N2250/02 ,  F01N2340/02 ,  F01N2340/04 ,  F01N2470/16 ,  F01N2470/18 ,  F01N2470/20 ,  F01N2590/06 ,  F01N2590/08 ,  F01N2610/02 ,  F01N2610/1406 ,  F01N2610/1453 ,  Y02A50/2325 ,  Y02T10/20 ,  Y02T10/24

Abstract: An exhaust gas aftertreatment device provided to an upper portion of an engine includes a right and left pair of first and second aftertreatment units, into which exhaust gas from the engine dividedly flows, each including a first exhaust gas emission control system on an upstream side, a second exhaust gas emission control system on a downstream side and a communication pipe through which the first and second systems are in communication with each other, the first and second systems, while being arranged side by side in a right-and-left direction, being oriented so that a flow direction of the exhaust gas flowing therein is parallel with a front-and-rear direction. When the device is seen in the front-and-rear direction, an outer linear envelope tangent to the first system and the communication pipe of each of the units extends upward while tilting toward a right-and-left center of the engine.

Abstract translation: 设置在发动机上部的废气后处理装置具有左右一对第一和第二后处理单元，分配有来自发动机的废气分别流入的第一和第二后处理单元，每个包括在上游侧的第一废气排放控制系统， 第一和第二系统在下游侧具有第二废气排放控制系统和第一和第二系统彼此连通的连通管，第一和第二系统，同时沿左右方向并排布置， 被定向为使得流过其中的废气的流动方向与前后方向平行。 当沿着前后方向观察装置时，与第一系统相切的外部线性包络体和每个单元的连通管向上延伸，同时向发动机的左右中心倾斜。