公开(公告)号：US20150275729A1

公开(公告)日：2015-10-01

申请号：US14641577

申请日：2015-03-09

Applicant: KUBOTA CORPORATION

Inventor： Katsuaki ARAI ,  Takashi ONISHI ,  Yoshikazu TAKEMOTO ,  Tomoya AKITOMO

IPC: F01N3/20

CPC classification number: F01N3/2006 ,  F01N3/0256 ,  F01N3/035 ,  F01N3/103 ,  F01N3/36 ,  F01N3/38 ,  F01N9/002 ,  F01N13/008 ,  F01N13/0097 ,  F01N2240/14 ,  F01N2240/16 ,  F01N2560/06 ,  F01N2560/08 ,  F01N2560/14 ,  F01N2610/04 ,  F01N2610/107 ,  Y02T10/26 ,  Y02T10/47

Abstract: An exhaust gas processing device for an engine, capable of securely warming a combustion catalyst, is provided. A combustion catalyst burning gas is produced when a warming end condition for the combustion catalyst is established, which signifies the establishment of either one of a first condition or a second condition. In the first condition, an inlet temperature of a combustion catalyst is equal to or higher than an activation requirement temperature of the combustion catalyst, and further, an outlet temperature of the combustion catalyst is equal to or higher than an activation confirmation temperature of the combustion catalyst in excess of the inlet temperature of the combustion catalyst. In the second condition, the outlet temperature of the combustion catalyst exceeds a warming confirmation temperature of the combustion catalyst that is set to be higher as an engine speed is lower, for a predetermined period of time.

Abstract translation: 提供一种能够可靠地加热燃烧催化剂的用于发动机的废气处理装置。 当建立用于燃烧催化剂的加热结束条件时，产生燃烧催化剂燃烧气体，这表示建立第一条件或第二条件中的任一个。 在第一条件下，燃烧催化剂的入口温度等于或高于燃烧催化剂的活化要求温度，此外，燃烧催化剂的出口温度等于或高于燃烧的活化确认温度 催化剂超过燃烧催化剂的入口温度。 在第二条件下，燃烧催化剂的出口温度超过燃烧催化剂的加热确认温度，其在发动机转速较低时设定得较高，预定时间段。

公开(公告)号：US20140174061A1

公开(公告)日：2014-06-26

申请号：US14108464

申请日：2013-12-17

Applicant: KUBOTA Corporation

Inventor： Mitsugu OKUDA ,  Yoshikazu TAKEMOTO ,  Takashi ONISHI ,  Hozumi ISHIDA ,  Manabu MIYAZAKI ,  Yuichi TAMAKI ,  Tomoya AKITOMO ,  Katsuaki ARAI

IPC: F01N3/10

CPC classification number: F01N3/10 ,  F01N3/0256 ,  F01N3/323 ,  F01N3/36

Abstract: An exhaust treatment apparatus for an engine including a combustible gas supplying passage; a heat releasing port opened in an upstream side in the exhaust passage from the oxidation catalyst and in a downstream side in the combustible gas supplying passage, the exhaust passage and the combustible gas supplying passage communicating with each other through the heat releasing port; an ignition apparatus beneath the heat releasing port, the heat of flaming combustion of combustible gas ignited by the ignition apparatus being supplied to the exhaust passage to raise the temperature of exhaust in the exhaust passage; a flame holding plate in a downstream side in the combustible gas supplying passage from the ignition apparatus, an exhaust guiding plate at the top portion of the flame holding plate, the exhaust guiding plate having an upward slope toward a downstream side in the exhaust passage.

Abstract translation: 一种用于包括可燃气体供应通道的发动机的排气处理装置; 在所述排气通路的上游侧从所述氧化催化剂和所述可燃性气体供给路径的下游侧开口的排气口，所述排气通路和所述可燃性气体供给路径通过所述散热口相互连通; 位于放热口下方的点火装置，由点火装置点燃的可燃气体的燃烧热量供给到排气通道，以提高排气通道中的排气温度; 来自点火装置的可燃性气体供给路径的下游侧的火焰保持板，在火焰保持板的顶部的排气引导板，排气引导板朝向排气通路的下游侧具有向上的倾斜。

公开(公告)号：US20140072478A1

公开(公告)日：2014-03-13

申请号：US14016366

申请日：2013-09-03

Applicant: KUBOTA CORPORATION

Inventor： Takashi ONISHI ,  Hidetaka MORINAGA ,  Yoshikazu TAKEMOTO ,  Toshio NAKAHIRA ,  Mitsugu OKUDA ,  Keita NAITO

IPC: F01N3/28

CPC classification number: F01N3/2889 ,  F01N3/025 ,  F01N3/0256 ,  F01N3/30 ,  F01N3/36 ,  F01N13/008 ,  F01N2240/14 ,  F01N2240/20 ,  F01N2240/30 ,  F01N2490/16 ,  F01N2560/06

Abstract: An exhaust treatment device of a diesel engine is provided in which combustible gas is burned with oxygen in exhaust, combustion heat increases a temperature of the exhaust, and heat of the exhaust can burn and remove PM accumulating in a DPF. In order to cause a heater for radiating heat at a start of generation of the combustible gas to enter a catalyst inlet portion, and fit a liquid fuel retaining member over a periphery of the heater, a guide plate is provided to a lower face of the liquid fuel retaining member so that the air-fuel mixture moving down in the liquid fuel retaining member flows along an upper face of the guide plate out to a periphery of the guide plate.

Abstract translation: 提供了一种柴油发动机的排气处理装置，其中可燃气体在排气中用氧气燃烧，燃烧热量增加了排气温度，并且排气的热量可燃烧并除去积聚在DPF中的PM。 为了在可燃气体的产生开始时产生用于放热的加热器进入催化剂入口部分，并且将液体燃料保持部件装配在加热器的周边上，则引导板被提供到 液体燃料保持构件，使得在液体燃料保持构件中向下移动的空气 - 燃料混合物沿着引导板的上表面流动到引导板的周边。

公开(公告)号：US20150118120A1

公开(公告)日：2015-04-30

申请号：US14478425

申请日：2014-09-05

Applicant: KUBOTA Corporation

Inventor： Yuichi TAMAKI ,  Yoshikazu TAKEMOTO ,  Takashi ONISHI ,  Mitsugu OKUDA ,  Tomoya AKITOMO

IPC: B01D53/94

CPC classification number: F01N3/0253 ,  F01N2240/12

Abstract: It is an object of the present invention to provide an exhaust gas treatment device of an engine capable of preventing matching surfaces of catalyst portions configuring a combustible gas catalyst from being thermally damaged. In the exhaust gas treatment device, combustible gas is produced by combustible gas generating catalyst, exhaust gas heated by combustion of combustible gas is supplied to an exhaust gas treatment portion, the combustible gas generating catalyst comprises an aggregate of a plurality of catalyst portions, each of the catalyst portions includes a matching surface with respect to adjacent one of the catalyst portions, a fastening ring is fitted over the combustible gas generating catalyst in which the matching surfaces of the adjacent catalyst portions are abutted against each other, and the matching surfaces of the adjacent catalyst portions are brought into tight contact with each other by a fastening force of the fastening ring.

Abstract translation: 本发明的目的是提供一种能够防止构成可燃气体催化剂的催化剂部分的匹配表面被热损坏的发动机的废气处理装置。 在废气处理装置中，通过可燃性气体发生催化剂生成可燃性气体，通过可燃性气体的燃烧而加热的废气被供给到排气处理部，该可燃性气体发生催化剂由多个催化剂部分的集合体构成， 的催化剂部分包括相对于相邻的催化剂部分的匹配表面，紧固环装配在可燃气体发生催化剂上，相邻催化剂部分的匹配表面彼此抵接，并且匹配表面 相邻的催化剂部分通过紧固环的紧固力彼此紧密接触。