公开(公告)号：US09145806B2

公开(公告)日：2015-09-29

申请号：US14239876

申请日：2013-09-19

Applicant: KOMATSU LTD.

Inventor： Hiroshi Nakagami ,  Taira Ozaki ,  Hironori Yamamitsu ,  Takashi Katou ,  Yoshihisa Fujimoto

IPC: F01N3/00 ,  F01N3/20 ,  F01N3/10 ,  F01N3/24 ,  F01N13/18 ,  F01N3/021

CPC classification number: F01N3/2046 ,  F01N3/021 ,  F01N3/10 ,  F01N3/2066 ,  F01N3/24 ,  F01N13/1805 ,  F01N2590/08 ,  F01N2610/11 ,  F01N2610/1453 ,  Y02A50/2325 ,  Y02T10/24

Abstract: An exhaust treatment unit for a work vehicle includes a selective catalytic reduction apparatus, a connection pipe, an ejection apparatus attached to the connection pipe, a first pipe section that guides coolant to the ejection apparatus, a second pipe section that discharges coolant from the ejection apparatus, first and second retaining sections, and a coolant pump. The ejection apparatus ejects reducing agent into exhaust supplied to the selective catalytic reduction apparatus. The first and second retaining sections retain coolant and are connected to the first and second pipe sections above the ejection apparatus, respectively. The coolant pump is driven by an engine driving force and supplies the coolant to the ejection apparatus via the first pipe section. The first and second pipe sections extend upward from first and second connecting sections of the first and second pipe sections and the ejection apparatus toward the first and second retaining sections, respectively.

Abstract translation: 作业车辆的排气处理单元包括选择性催化还原装置，连接管，安装在连接管上的排出装置，将冷却剂引导至排出装置的第一管段，将排出的冷却剂从排出口排出的第二管段 设备，第一和第二保持部分以及冷却剂泵。 喷射装置将还原剂喷射到供给到选择性催化还原装置的废气中。 第一和第二保持部分保持冷却剂并且分别连接到喷射装置上方的第一和第二管部分。 冷却剂泵由发动机驱动力驱动，并通过第一管段将冷却剂供给到喷射装置。 第一和第二管段分别从第一和第二管段的第一和第二连接部分和喷射装置朝向第一和第二保持部分向上延伸。

公开(公告)号：US20140290222A1

公开(公告)日：2014-10-02

申请号：US14234474

申请日：2013-03-15

Applicant: Komatsu Ltd.

Inventor： Masahiro Sawada ,  Takashi Katou ,  Kanji Namimatsu

IPC: F01N3/10

CPC classification number: F01N3/2046 ,  F01N3/021 ,  F01N3/10 ,  F01N3/2066 ,  F01N3/24 ,  F01N13/1805 ,  F01N2590/08 ,  F01N2610/11 ,  F01N2610/1453 ,  Y02A50/2325 ,  Y02T10/24

Abstract: An exhaust gas post-treatment unit includes a diesel particulate filtering device that treats engine exhaust gas, a selective catalyst reduction device that treats the engine exhaust gas, a connecting pipe, an injection device, a cooling water supply pipe and a cooling water return pipe. The connecting pipe connects the diesel particulate filtering device and the selective catalyst reduction device. The injection device is disposed on the connecting pipe and injects a reducing agent into the exhaust gas supplied to the selective catalyst reduction device. The a cooling water supply pipe guides cooling water to the injection device to cool the injection device. The cooling water return pipe discharges the cooling water from the injection device. At least one of the cooling water supply pipe and the cooling water return pipe has a convection section extending upward along the connecting pipe from a connecting portion with the injection device.

Abstract translation: 废气后处理单元包括处理发动机废气的柴油机微粒过滤装置，处理发动机废气的选择性催化剂还原装置，连接管，喷射装置，冷却水供给管和冷却水回流管 。 连接管连接柴油机微粒过滤装置和选择性催化剂还原装置。 注射装置设置在连接管上，并将还原剂注入供给到选择性催化剂还原装置的废气中。 冷却水供应管将冷却水引导到注射装置以冷却注射装置。 冷却水回流管从注射装置排出冷却水。 冷却水供给管和冷却水返回管中的至少一个具有沿着连接管从与注射装置的连接部向上延伸的对流部。

公开(公告)号：US20150078967A1

公开(公告)日：2015-03-19

申请号：US14239876

申请日：2013-09-19

Applicant: KOMATSU LTD.

Inventor： Hiroshi Nakagami ,  Taira Ozaki ,  Hironori Yamamitsu ,  Takashi Katou ,  Yoshihisa Fujimoto

IPC: F01N3/20

CPC classification number: F01N3/2046 ,  F01N3/021 ,  F01N3/10 ,  F01N3/2066 ,  F01N3/24 ,  F01N13/1805 ,  F01N2590/08 ,  F01N2610/11 ,  F01N2610/1453 ,  Y02A50/2325 ,  Y02T10/24

Abstract: An exhaust treatment unit for a work vehicle includes a selective catalytic reduction apparatus, a connection pipe, an ejection apparatus attached to the connection pipe, a first pipe section that guides coolant to the ejection apparatus, a second pipe section that discharges coolant from the ejection apparatus, first and second retaining sections, and a coolant pump. The ejection apparatus ejects reducing agent into exhaust supplied to the selective catalytic reduction apparatus. The first and second retaining sections retain coolant and are connected to the first and second pipe sections above the ejection apparatus, respectively. The coolant pump is driven by an engine driving force and supplies the coolant to the ejection apparatus via the first pipe section. The first and second pipe sections extend upward from first and second connecting sections of the first and second pipe sections and the ejection apparatus toward the first and second retaining sections, respectively.

Abstract translation: 作业车辆的排气处理单元包括选择性催化还原装置，连接管，安装在连接管上的排出装置，将冷却剂引导至排出装置的第一管段，将排出的冷却剂从排出口排出的第二管段 设备，第一和第二保持部分以及冷却剂泵。 喷射装置将还原剂喷射到供给到选择性催化还原装置的废气中。 第一和第二保持部分保持冷却剂并且分别连接到喷射装置上方的第一和第二管部分。 冷却剂泵由发动机驱动力驱动，并通过第一管段将冷却剂供给到喷射装置。 第一和第二管段分别从第一和第二管段的第一和第二连接部分和喷射装置朝向第一和第二保持部分向上延伸。

公开(公告)号：US08973353B2

公开(公告)日：2015-03-10

申请号：US14234474

申请日：2013-03-15

Applicant: Komatsu Ltd.

Inventor： Masahiro Sawada ,  Takashi Katou ,  Kanji Namimatsu

IPC: F01N3/00 ,  F01N3/10 ,  F01N3/02 ,  F01N5/02 ,  F01N3/24 ,  F01N3/20

CPC classification number: F01N3/2046 ,  F01N3/021 ,  F01N3/10 ,  F01N3/2066 ,  F01N3/24 ,  F01N13/1805 ,  F01N2590/08 ,  F01N2610/11 ,  F01N2610/1453 ,  Y02A50/2325 ,  Y02T10/24

Abstract: An exhaust gas post-treatment unit includes a diesel particulate filtering device that treats engine exhaust gas, a selective catalyst reduction device that treats the engine exhaust gas, a connecting pipe, an injection device, a cooling water supply pipe and a cooling water return pipe. The connecting pipe connects the diesel particulate filtering device and the selective catalyst reduction device. The injection device is disposed on the connecting pipe and injects a reducing agent into the exhaust gas supplied to the selective catalyst reduction device. The a cooling water supply pipe guides cooling water to the injection device to cool the injection device. The cooling water return pipe discharges the cooling water from the injection device. At least one of the cooling water supply pipe and the cooling water return pipe has a convection section extending upward along the connecting pipe from a connecting portion with the injection device.

Abstract translation: 废气后处理单元包括处理发动机废气的柴油机微粒过滤装置，处理发动机废气的选择性催化剂还原装置，连接管，喷射装置，冷却水供给管和冷却水回流管 。 连接管连接柴油机微粒过滤装置和选择性催化剂还原装置。 注射装置设置在连接管上，并将还原剂注入供给到选择性催化剂还原装置的废气中。 冷却水供应管将冷却水引导到注射装置以冷却注射装置。 冷却水回流管从注射装置排出冷却水。 冷却水供给管和冷却水返回管中的至少一个具有沿着连接管从与注射装置的连接部向上延伸的对流部。

公开(公告)号：USD702736S1

公开(公告)日：2014-04-15

申请号：US29466881

申请日：2013-09-12

Applicant: Komatsu Ltd.

Designer： Hiroyuki Tomioka ,  Takashi Katou