公开(公告)号：US09506435B2

公开(公告)日：2016-11-29

申请号：US14220748

申请日：2014-03-20

Applicant: Caterpillar Inc.

Inventor： Jayaraman Venkataraghavan ,  John McDonnell ,  Nadeem Bunni ,  Christopher D. Hanson

IPC: F02M51/06 ,  F02M47/02 ,  F02M63/00 ,  H01F7/16

CPC classification number: F02M51/0625 ,  F02M47/027 ,  F02M51/061 ,  F02M51/0635 ,  F02M63/0015 ,  F02M63/0075 ,  H01F7/1638

Abstract: In one aspect, a fuel injector includes an injector body that defines a fuel inlet, a drain outlet and a nozzle outlet. A direct operated check valve is positioned in the injector body and includes a needle valve member with an opening hydraulic surface exposed to fluid pressure in a nozzle supply passage, and a closing hydraulic surface exposed to fluid pressure in a needle control chamber. The needle valve member is movable between a first position at which the nozzle supply passage is blocked to the nozzle outlet, and a second position at which the nozzle supply passage is open to the nozzle outlet. A needle control valve is positioned in the injector body and includes a control valve member movable between a first position at which the needle control chamber is fluidly connected to the drain outlet, and a second position at which the needle control chamber is fluidly blocked to the drain outlet. A solenoid actuator is positioned in the injector body and includes a stator assembly and an armature assembly coupled to the control valve member. One of the stator assembly and the armature assembly includes a non-magnetic insert that moves into and out of contact with another of the stator assembly and the armature assembly at an energized position and a de-energized position, respectively.

Abstract translation: 一方面，燃料喷射器包括限定燃料入口，排水出口和喷嘴出口的喷射器主体。 直接操作的止回阀定位在喷射器主体中，并且包括具有在喷嘴供应通道中暴露于流体压力的开口液压表面的针阀构件以及在针控制室中暴露于流体压力的关闭液压表面。 针阀构件可以在喷嘴供给通道被阻塞到喷嘴出口的第一位置和喷嘴供给通道对喷嘴出口打开的第二位置之间移动。 针控制阀定位在喷射器主体中，并且包括控制阀构件，该控制阀构件可以在针控制室流体地连接到排水出口的第一位置和第二位置之间移动，在第二位置，针控制室被流体地封闭到 排水口。 螺线管致动器定位在喷射器主体中并且包括定子组件和联接到控制阀构件的电枢组件。 定子组件和电枢组件中的一个包括非磁性插入件，其分别在通电位置和断电位置分别进入和离开定子组件和电枢组件中的另一个。

公开(公告)号：US20140203113A1

公开(公告)日：2014-07-24

申请号：US14220748

申请日：2014-03-20

Applicant: Caterpillar Inc.

Inventor： Jayaraman Venkataraghavan ,  John McDonnell ,  Nadeem Bunni ,  Christopher D. Hanson

IPC: F02M51/06

CPC classification number: F02M51/0625 ,  F02M47/027 ,  F02M51/061 ,  F02M51/0635 ,  F02M63/0015 ,  F02M63/0075 ,  H01F7/1638

Abstract: In one aspect, a fuel injector includes an injector body that defines a fuel inlet, a drain outlet and a nozzle outlet. A direct operated check valve is positioned in the injector body and includes a needle valve member with an opening hydraulic surface exposed to fluid pressure in a nozzle supply passage, and a closing hydraulic surface exposed to fluid pressure in a needle control chamber. The needle valve member is movable between a first position at which the nozzle supply passage is blocked to the nozzle outlet, and a second position at which the nozzle supply passage is open to the nozzle outlet. A needle control valve is positioned in the injector body and includes a control valve member movable between a first position at which the needle control chamber is fluidly connected to the drain outlet, and a second position at which the needle control chamber is fluidly blocked to the drain outlet. A solenoid actuator is positioned in the injector body and includes a stator assembly and an armature assembly coupled to the control valve member. One of the stator assembly and the armature assembly includes a non-magnetic insert that moves into and out of contact with another of the stator assembly and the armature assembly at an energized position and a de-energized position, respectively.

Abstract translation: 一方面，燃料喷射器包括限定燃料入口，排水出口和喷嘴出口的喷射器主体。 直接操作的止回阀定位在喷射器主体中，并且包括具有在喷嘴供应通道中暴露于流体压力的开口液压表面的针阀构件以及在针控制室中暴露于流体压力的关闭液压表面。 针阀构件可以在喷嘴供给通道被阻塞到喷嘴出口的第一位置和喷嘴供给通道对喷嘴出口打开的第二位置之间移动。 针控制阀定位在喷射器主体中，并且包括控制阀构件，该控制阀构件可以在针控制室流体地连接到排水出口的第一位置和第二位置之间移动，在第二位置，针控制室被流体地封闭到 排水口。 螺线管致动器定位在喷射器主体中并且包括定子组件和联接到控制阀构件的电枢组件。 定子组件和电枢组件中的一个包括非磁性插入件，其分别在通电位置和断电位置分别进入和离开定子组件和电枢组件中的另一个。

公开(公告)号：US20160245142A1

公开(公告)日：2016-08-25

申请号：US14628836

申请日：2015-02-23

Applicant: Caterpillar Inc.

Inventor： Jayaraman Venkataraghavan ,  James J. Driscoll ,  David A. Akers

IPC: F01N3/28 ,  F01N3/20

CPC classification number: F01N3/2066 ,  F01N3/2892 ,  F01N2340/00 ,  F01N2590/08 ,  F01N2610/02 ,  F01N2610/1453 ,  Y02T10/24

Abstract: A reductant injector mount is provided. The reductant injector mount includes a mounting region configured to connect to an exhaust conduit. The reductant injector also includes a contoured region formed in the mounting region. The contoured region is configured to increase a velocity of an exhaust gas flow through the contoured region. The contoured region is also configured to reduce a recirculation of the exhaust gas flow through the contoured region. Further, the reductant injector mount includes a cut out portion provided on the contoured region. The cut out portion is configured to receive a reductant injector tip therethrough.

Abstract translation: 提供还原剂注射器支架。 还原剂喷射器支架包括构造成连接到排气导管的安装区域。 还原剂喷射器还包括形成在安装区域中的轮廓区域。 轮廓区域被配置为增加通过轮廓区域的废气流的速度。 轮廓区域还被配置为减少通过轮廓区域的废气流的再循环。 此外，还原剂喷射器支架包括设置在轮廓区域上的切口部分。 切出部分构造成接收通过其的还原剂注射器头部。