公开(公告)号：US20160376968A1

公开(公告)日：2016-12-29

申请号：US14753499

申请日：2015-06-29

Applicant: Caterpillar Inc.

Inventor： Dongming Tan ,  Brian M. Cole ,  Shawn R. Herold ,  Kevin L. Dea ,  Theron Cassidy ,  Matthew F. Fahrenkrug ,  Douglas A. Long ,  James J. Driscoll

IPC: F01N3/20 ,  F01N3/021 ,  F01N3/08

CPC classification number: F01N3/2066 ,  F01N3/021 ,  F01N3/0842 ,  F01N3/103 ,  F01N3/106 ,  F01N2530/22 ,  F01N2560/021 ,  F01N2570/18 ,  F01N2610/02 ,  F01N2610/10 ,  F01N2610/14 ,  Y02T10/24

Abstract: A header unit for a reductant tank is provided. The header unit includes a reductant draw conduit extending into an interior space of the reductant tank. The reductant draw conduit is configured to draw a reductant from the reductant tank. The reductant draw conduit includes at least one expansion opening provided along a length thereof. The header unit also includes a valve element coupled to the reductant draw conduit. The valve element includes a main body member defining a channel therethrough. The main body member circumferentially surrounds at least a portion of the reductant draw conduit corresponding to the at least one expansion opening. The main body member is made of an elastomeric material configured to accommodate an expansion thereof.

Abstract translation: 提供了一种用于还原罐的头部单元。 头部单元包括延伸到还原剂罐的内部空间中的还原剂牵引导管。 还原剂牵引导管构造成从还原槽中吸收还原剂。 还原剂牵引导管包括沿其长度设置的至少一个膨胀开口。 集管单元还包括联接到还原剂牵引导管的阀元件。 阀元件包括限定穿过其中的通道的主体构件。 主体构件周向地包围对应于至少一个膨胀开口的还原剂牵引导管的至少一部分。 主体构件由构造成适应其膨胀的弹性体材料制成。

公开(公告)号：US20140326325A1

公开(公告)日：2014-11-06

申请号：US14336257

申请日：2014-07-21

Applicant: Caterpillar Inc.

Inventor： Brian M. Cole

IPC: F01N3/20

CPC classification number: F01N3/208 ,  F01N2610/142 ,  F01N2610/1473 ,  Y02T10/24 ,  Y10T137/0396

Abstract: A method for filling a reductant tank is disclosed. The method includes creating a lower air pressure within the reductant tank than a pressure of an external reductant reservoir using the first valve, the second valve, and the venturi. The method also includes determining a level of a reductant in the reductant tank. The method further includes engaging the tank fill coupling mechanism with the external reductant reservoir. The method includes supplying the reductant from the external reductant reservoir into the reductant tank based on a pressure difference between the air pressure within the reductant tank and the pressure of the external reductant reservoir. The method also includes shutting-off the supply of the reductant based, at least in part, on the level of the reductant in the reductant tank. The method further includes disengaging the tank fill coupling mechanism from the external reductant reservoir.

Abstract translation: 公开了一种填充还原剂罐的方法。 该方法包括使用第一阀，第二阀和文氏管在外部还原剂储存器的压力下产生较低的还原剂箱内的空气压力。 该方法还包括测定还原剂罐中还原剂的含量。 该方法还包括使罐填充连接机构与外部还原剂储存器接合。 该方法包括基于还原剂箱内的空气压力和外部还原剂储存器的压力之间的压力差，将还原剂从外部还原剂储存器供应到还原剂罐中。 该方法还包括至少部分地基于还原剂箱中的还原剂的水平来关闭还原剂的供应。 该方法还包括使罐填充联接机构与外部还原剂储存器脱开。

公开(公告)号：US20150300228A1

公开(公告)日：2015-10-22

申请号：US14753042

申请日：2015-06-29

Applicant: Caterpillar Inc.

Inventor： Xiaohui Gong ,  Dustin I. Landwehr ,  Brian M. Cole ,  Ioan David

IPC: F01N3/20 ,  B67D7/02

CPC classification number: B67D7/02 ,  B67D7/3209 ,  F01N3/2066 ,  F01N2590/08 ,  F01N2610/02 ,  F01N2610/1413 ,  F01N2610/142 ,  F01N2610/1493 ,  Y02T10/24

Abstract: A method for delivering a reductant into a reductant tank through a fill conduit associated with the reductant tank is provided. The reductant tank is in selective fluid communication with an external source having a delivery conduit associated therewith. The method includes connecting the delivery conduit of the external source with the fill conduit of the reductant tank. The method also includes operating a valve provided on the delivery conduit in a first configuration. The method includes changing an operation of the valve from the first configuration to a second configuration. The method also includes purging of a portion of the reductant retained in the fill conduit into the external source through the pump assembly based on the second configuration of the valve.

Abstract translation: 提供了通过与还原剂箱相关联的填充导管将还原剂输送到还原剂罐中的方法。 还原剂罐与具有与其相关联的输送导管的外部源选择性地流体连通。 该方法包括将外部源的输送管道与还原剂罐的填充管道连接。 该方法还包括以第一配置操作设置在输送管道上的阀。 该方法包括将阀的操作从第一配置改变到第二配置。 该方法还包括基于阀的第二配置，通过泵组件将保留在填充管道中的部分还原剂吹扫到外部源中。

公开(公告)号：US20150023843A1

公开(公告)日：2015-01-22

申请号：US14510141

申请日：2014-10-09

Applicant: Caterpillar Inc.

Inventor： James J. Driscoll ,  Brian M. Cole ,  Jinhui Sun

IPC: F01N3/20

CPC classification number: F01N3/208 ,  F01N2610/02 ,  F01N2610/1426 ,  F01N2610/1433 ,  F01N2610/1473 ,  Y02T10/24

Abstract: An aftertreatment system is disclosed. The aftertreatment system includes an exhaust conduit and a selective catalytic reduction module. The aftertreatment system also includes a reductant supply system. The reductant supply system includes a reductant tank, a reductant injector, and a pump assembly. The pump assembly includes a reversing valve assembly and a pump unit. The pump assembly also includes a plurality of check valves, a pressure sensor, and a filter. Further, the reductant supply system includes a back flow valve assembly. The reductant supply system also includes at least two header units associated with the pump assembly. The at least two header units include a reductant draw conduit and at least one heat exchanger. The at least two header units also include a bag filtration assembly.

Abstract translation: 公开了后处理系统。 后处理系统包括排气管和选择性催化还原模块。 后处理系统还包括还原剂供应系统。 还原剂供应系统包括还原剂罐，还原剂注入器和泵组件。 泵组件包括换向阀组件和泵单元。 泵组件还包括多个止回阀，压力传感器和过滤器。 此外，还原剂供给系统包括回流阀组件。 还原剂供应系统还包括与泵组件相关联的至少两个集管单元。 至少两个集管单元包括还原剂牵引管和至少一个热交换器。 至少两个集管单元还包括袋式过滤组件。

公开(公告)号：US09677444B2

公开(公告)日：2017-06-13

申请号：US14830222

申请日：2015-08-19

Applicant: Caterpillar Inc.

Inventor： Kevin L. Dea ,  Brian M. Cole

IPC: F01N3/20

CPC classification number: F01N3/208 ,  F01N3/206 ,  F01N3/2066 ,  F01N9/00 ,  F01N2560/026 ,  F01N2610/02 ,  F01N2610/1406 ,  F01N2610/144 ,  F01N2610/146 ,  F01N2610/1473 ,  F01N2610/148 ,  F01N2900/1402 ,  F01N2900/1812 ,  F01N2900/1821 ,  F01N2900/1822 ,  Y02T10/24 ,  Y02T10/47

Abstract: A reductant supply system for an exhaust aftertreatment system is disclosed. The reductant supply system may include a controller configured to receive an engine system operation signal and transmit a reductant delivery signal in response to the engine system operation signal, an injector configured to dispense a reductant fluid into an exhaust gas flow of the exhaust aftertreatment system in response to the reductant delivery signal, and a pump configured to actuate between an off condition and an on condition in response to the reductant delivery signal. Furthermore, the reductant supply system may include a recycle line and a two-way valve positioned in the recycle line configured to actuate between a closed position and an open position in response to the reductant delivery signal.

公开(公告)号：US20170051648A1

公开(公告)日：2017-02-23

申请号：US14830222

申请日：2015-08-19

Applicant: Caterpillar Inc.

Inventor： Kevin L. Dea ,  Brian M. Cole

IPC: F01N3/20

CPC classification number: F01N3/208 ,  F01N3/206 ,  F01N3/2066 ,  F01N9/00 ,  F01N2560/026 ,  F01N2610/02 ,  F01N2610/1406 ,  F01N2610/144 ,  F01N2610/146 ,  F01N2610/1473 ,  F01N2610/148 ,  F01N2900/1402 ,  F01N2900/1812 ,  F01N2900/1821 ,  F01N2900/1822 ,  Y02T10/24 ,  Y02T10/47

Abstract: A reductant supply system for an exhaust aftertreatment system is disclosed. The reductant supply system may include a controller configured to receive an engine system operation signal and transmit a reductant delivery signal in response to the engine system operation signal, an injector configured to dispense a reductant fluid into an exhaust gas flow of the exhaust aftertreatment system in response to the reductant delivery signal, and a pump configured to actuate between an off condition and an on condition in response to the reductant delivery signal. Furthermore, the reductant supply system may include a recycle line and a two-way valve positioned in the recycle line configured to actuate between a closed position and an open position in response to the reductant delivery signal.

Abstract translation: 公开了一种排气后处理系统的还原剂供给系统。 还原剂供应系统可以包括控制器，其被配置为接收发动机系统操作信号并且响应于发动机系统操作信号传送还原剂输送信号，喷射器被构造成将还原剂流体分配到排气后处理系统的废气流中 响应于还原剂递送信号，以及泵，被配置为响应于还原剂递送信号而在关闭状态和打开状态之间启动。 此外，还原剂供应系统可以包括再循环管线和位于循环管线中的双向阀，其被配置为响应于还原剂输送信号在关闭位置和打开位置之间致动。

公开(公告)号：US20140241948A1

公开(公告)日：2014-08-28

申请号：US14271707

申请日：2014-05-07

Applicant: Caterpillar Inc.

Inventor： Brian M. Cole

IPC: B01D53/92

CPC classification number: B01D53/92 ,  F01N3/2066 ,  F01N13/009 ,  F01N2610/02 ,  F01N2610/1406 ,  F01N2610/1433 ,  F01N2900/1808 ,  Y02T10/24

Abstract: An aftertreatment system for the transport of fluid reductant to an exhaust of a combustion engine is provided. The aftertreatment system includes a reductant tank configured to store the reductant. The reductant tank has an in-tank filter. A pump module is fluidly coupled to the reductant tank. The pump module includes a pump housing, a pump motor, a pump filter and a pump. The pump is connected downstream of the pump filter. A pressure sensor is connected downstream of the pump. A return conduit is configured to return a portion of the reductant from downstream of the pump to upstream of the pump. A pressure regulator is present within the return conduit. The pump housing is structured and arranged to enclose the pump filter, the pressure sensor, the return conduit, the pump motor and the pressure regulator. A reductant injector is fluidly coupled to the pump module.

Abstract translation: 提供了用于将流体还原剂输送到内燃机的排气的后处理系统。 后处理系统包括被配置为存储还原剂的还原罐。 还原罐有一个内置过滤器。 泵模块流体耦合到还原罐。 泵模块包括泵壳体，泵电机，泵过滤器和泵。 泵连接在泵过滤器的下游。 压力传感器连接在泵的下游。 返回导管构造成将一部分还原剂从泵的下游返回到泵的上游。 回流管道内存在压力调节器。 泵壳体构造和布置成包围泵过滤器，压力传感器，回流管道，泵电机和压力调节器。 还原剂注射器流体耦合到泵模块。