公开(公告)号：US20140123936A1

公开(公告)日：2014-05-08

申请号：US13667650

申请日：2012-11-02

Applicant: CATERPILLAR, INC.

Inventor： Hoisan Kim ,  Dana R. Coldren ,  Mayank Mittal

IPC: F02M21/02 ,  F02M43/04 ,  F02M51/06

CPC classification number: F02M43/04 ,  F02D19/0689 ,  F02D19/0694 ,  F02D19/10 ,  F02M21/0281 ,  F02M45/086 ,  F02M63/0035 ,  F02M2200/44 ,  Y02T10/32 ,  Y02T10/36

Abstract: A dual fuel injector utilizes first and second control valves to open and close first and second nozzle outlet sets to inject a first fuel and a second fuel, respectively. The first and second control valves have concentric lines of action, and include a self alignment feature with respect to a flat seat. The two fuels may differ in at least one of chemical identity, matter phase and pressure.

Abstract translation: 双燃料喷射器利用第一和第二控制阀打开和关闭第一和第二喷嘴出口组，以分别注入第一燃料和第二燃料。 第一和第二控制阀具有同心的作用线，并且包括相对于平的座椅的自对准特征。 这两种燃料可能在化学特性，物质相和压力中至少有一种不同。

公开(公告)号：US11815055B1

公开(公告)日：2023-11-14

申请号：US18060931

申请日：2022-12-01

Applicant: Caterpillar Inc.

Inventor： Dana R. Coldren ,  Lifeng Wang ,  Eric L. Schroeder

IPC: F02M43/04 ,  F02M51/06 ,  F02M55/00 ,  F02M47/04

CPC classification number: F02M43/04 ,  F02M47/046 ,  F02M51/06 ,  F02M55/002

Abstract: A fuel injector capable of injecting a plurality of different fuels in a single fuel injection event includes a body including a primary fuel path and a pilot fuel path and a first plunger in fluid communication with the pilot fuel path. The fuel injector also includes a second plunger in fluid communication with the primary fuel path and with the pilot fuel path, a hydraulic control chamber within the pilot fuel path, and an injection valve at which the primary fuel path and the pilot fuel path connect to each other.

公开(公告)号：US20190383254A1

公开(公告)日：2019-12-19

申请号：US16007418

申请日：2018-06-13

Applicant: Caterpillar Inc.

Inventor： Dana R. Coldren ,  Sana Mahmood ,  Stephen R. Lewis

IPC: F02M63/02 ,  F02M57/00 ,  F02M51/00 ,  F02M61/18

Abstract: A fuel system for an internal combustion engine includes a common rail and a plurality of fuel injectors connected to the common rail and each including an outlet check, an injection control valve, and an injection rate controller. The injection rate controller varies a flow area to a nozzle of the fuel injector such that a pressure drop through the fuel injector is varied to provide injection rate shaping.

公开(公告)号：US10060421B2

公开(公告)日：2018-08-28

申请号：US14753585

申请日：2015-06-29

Applicant: Caterpillar Inc.

Inventor： Cory A. Brown ,  Adrienne M. Brasche ,  Sunil J. Bean ,  Shivangini S. Hazari ,  Sana Mahmood ,  Nikhil M. Arya ,  Joshua W. Steffen ,  Daniel R. Baldwin ,  Dana R. Coldren ,  Robert M. Campion ,  Alan R. Stockner

IPC: F04B9/117 ,  F04B23/02 ,  F04B23/06 ,  F04B37/08 ,  F04B49/06 ,  F04B15/08

CPC classification number: F04B23/02 ,  F04B9/1176 ,  F04B23/023 ,  F04B23/06 ,  F04B37/08 ,  F04B49/065 ,  F04B2015/081 ,  F17C2227/0142

Abstract: A cryogenic fluid pump includes a plurality of pumping elements, each of the plurality of pumping elements having an actuator portion that is associated with and configured to selectively activate one end of a pushrod in response to a command by an electronic controller, an activation portion associated with an opposite end of the pushrod, and a pumping portion associated with the activation portion. For each of the plurality of pumping elements, the pumping portion is activated for pumping a fluid by the activation portion, which activation portion is activated by the actuator portion. The electronic controller is configured to selectively activate each of the plurality of pumping elements such that a flow of fluid from the cryogenic fluid pump results from continuous activations of the plurality of pumping elements at selected dwell times between activations of successive pumping elements.

公开(公告)号：US20180142679A1

公开(公告)日：2018-05-24

申请号：US15356696

申请日：2016-11-21

Applicant: Caterpillar Inc.

Inventor： Dana R. Coldren ,  David T. Montgomery

IPC: F04B15/08

Abstract: A cryogenic pump includes a pressurization assembly configured to be submerged in a cryogenic liquid; a hydraulic actuation assembly; and a transmission assembly in communication between the pressurization assembly and the hydraulic actuation assembly. The transmission assembly including a conduit having a first end adjacent the hydraulic actuation assembly and a second end adjacent the pressurization assembly. The conduit is configured to contain a material having a first state at the first end and a different second state at the second end.

公开(公告)号：US09945364B2

公开(公告)日：2018-04-17

申请号：US14798058

申请日：2015-07-13

Applicant: Caterpillar Inc.

Inventor： Joshua W. Steffen ,  Dana R. Coldren

IPC: F04B15/08 ,  F04B9/113 ,  F04B53/04 ,  F04B9/117

CPC classification number: F04B15/08 ,  F04B9/113 ,  F04B9/1172 ,  F04B53/04 ,  F04B2015/081

Abstract: A pump has a pump body and at least first and second pumping elements, each pumping element including a piston defining a head-end and a rod-end. The pump receives a pressurized fluid at an inlet, and returns fluid through a drain outlet. A hydraulic distributor operates to fluidly connect the head end of an extending piston to the pressurized fluid, and the rod end of the extending piston to the drain outlet. The hydraulic distributor further connects the rod-end of a retracting piston to the drain outlet, and the rod-end of one or more retracting pistons to the drain or to a return pressure, which is lower than an extending pressure.

公开(公告)号：US20160215766A1

公开(公告)日：2016-07-28

申请号：US14603898

申请日：2015-01-23

Applicant: CATERPILLAR INC.

Inventor： Cory A. Brown ,  Bryan E. Nelson ,  Dana R. Coldren

IPC: F04B9/109 ,  F04B53/16 ,  F04B19/22 ,  F04B53/14 ,  F04B1/16 ,  F04B15/08

CPC classification number: F04B9/109 ,  F04B1/16 ,  F04B15/08 ,  F04B19/22 ,  F04B37/08 ,  F04B39/0005 ,  F04B53/14 ,  F04B53/16 ,  F04B2015/081

Abstract: A cryogenic pump comprising a shaft disposed in a bearing. The shaft rotates with respect to the bearing housing, and the shaft includes an end with an angled face. The pump includes a drive at one end of the bearing housing. A tappet passage is formed through the drive housing. A pushrod housing connects to the drive housing. The pump includes a piston and a tappet sliding within the tappet passage. The tappet has a base end disposed within the tappet passage and a rod end extending below the tappet end of the drive housing. A fluid cavity is in the tappet passage between the piston and the tappet. The pump includes a pushrod connected to the tappet. The angled face of the shaft rotates and drives the piston toward the drive housing, pushing fluid within the fluid cavity against the tappet, driving the pushrod away from the drive housing.

Abstract translation: 一种低温泵，包括设置在轴承中的轴。 轴相对于轴承壳体旋转，并且轴包括具有倾斜面的端部。 该泵包括在轴承壳体的一端的驱动器。 挺杆通道形成穿过驱动器壳体。 推杆外壳连接到驱动器外壳。 该泵包括在推杆通道内滑动的活塞和挺杆。 推杆具有设置在挺杆通道内的基端和延伸在驱动器壳体的挺杆端下方的杆端。 流体腔位于活塞和挺杆之间的挺杆通道中。 泵包括连接到挺杆的推杆。 轴的倾斜面旋转并将活塞驱动向驱动器壳体，将流体腔内的流体推向挺杆，将推杆远离驱动器壳体驱动。

公开(公告)号：US20160201659A1

公开(公告)日：2016-07-14

申请号：US14597019

申请日：2015-01-14

Applicant: Caterpillar Inc.

Inventor： Bryan E. Nelson ,  Daniel R. Baldwin ,  Alan R. Stockner ,  Robert M. Campion ,  Cory A. Brown ,  Joshua W. Steffen ,  Dana R. Coldren ,  Sana Mahmood

IPC: F04B27/10 ,  F16C23/08 ,  F16C19/54

CPC classification number: F04B27/1054 ,  F04B27/1063 ,  F04B37/08 ,  F16C19/06 ,  F16C19/30 ,  F16C19/547 ,  F16C23/086 ,  F16C2360/00

Abstract: A bearing arrangement for a wobble plate piston pump includes first, second, third, and fourth bearing assemblies. The first and second bearing assemblies support the drive shaft portion for rotation within the housing about the central longitudinal axis, while the third and fourth bearing assemblies support the load plate for rotation relative to the offset shaft portion of the shaft. The second bearing assembly is distally disposed from the first, the third disposed distally to second, and the fourth disposed distally to third. The fourth bearing assembly is the most distally disposed bearing assembly along the shaft.

Abstract translation: 摆动板活塞泵的轴承装置包括第一，第二，第三和第四轴承组件。 第一和第二轴承组件支撑驱动轴部分，用于围绕中心纵向轴线在壳体内旋转，同时第三和第四轴承组件支撑负载板以相对于轴的偏心轴部分旋转。 第二轴承组件从第一轴向组件向远侧设置，第三轴向组件向远侧配置到第二轴承组件，而第四轴向组件向远侧配置到第二轴承组件。 第四轴承组件是沿着轴的最远端布置的轴承组件。

公开(公告)号：US09376992B2

公开(公告)日：2016-06-28

申请号：US13905285

申请日：2013-05-30

Applicant: Caterpillar, Inc.

Inventor： Cory Andrew Brown ,  Dana R. Coldren

IPC: F02M43/04 ,  F02M21/02

CPC classification number: F02M43/04 ,  F02M21/0209 ,  F02M21/0212 ,  F02M21/0215 ,  F02M21/0218 ,  F02M21/0248 ,  F02M21/0251 ,  F02M21/0254 ,  F02M21/0257 ,  F02M21/026 ,  F02M21/0263 ,  F02M2200/44 ,  Y02T10/36

Abstract: A dual fuel injector in a dual common rail fuel system includes an injector body defining a liquid fuel supply passage to a liquid fuel nozzle outlet, and a gaseous fuel supply passage to a gaseous fuel nozzle outlet. A liquid fuel needle check is movable within the injector body and has an opening hydraulic surface exposed to a fuel pressure of a liquid fuel common rail. A gaseous fuel needle check is positioned side by side with the liquid fuel needle check and has an opening hydraulic surface exposed to the fuel pressure of the liquid fuel common rail. Sensitivity to differences in gaseous fuel rail pressure and liquid fuel rail pressure is reduced by the design.

Abstract translation: 双共用燃料燃料系统中的双燃料喷射器包括限定到液体燃料喷嘴出口的液体燃料供给通道的喷射器主体和气体燃料喷嘴出口的气体燃料供给通道。 液体燃料针检查可在喷射器主体内移动，并具有暴露于液体燃料共轨的燃料压力的开启液压表面。 气体燃料针检查与液体燃料针检查并排定位，并且具有暴露于液体燃料共轨的燃料压力的开口液压表面。 通过设计可以降低气体燃料轨压力和液体燃料轨压力差异的灵敏度。

公开(公告)号：US20150361925A1

公开(公告)日：2015-12-17

申请号：US14837259

申请日：2015-08-27

Applicant: Caterpillar Inc.

Inventor： Dennis H. Gibson ,  Shivangini S. Hazari ,  Dana R. Coldren ,  Daniel R. Baldwin

IPC: F02M21/02 ,  F02M55/04 ,  F02M61/10 ,  F02M55/02

CPC classification number: F02M21/0257 ,  F02B3/06 ,  F02B43/00 ,  F02D19/0647 ,  F02D19/0684 ,  F02D19/0694 ,  F02M21/0215 ,  F02M21/0245 ,  F02M21/0281 ,  F02M21/0287 ,  F02M37/0017 ,  F02M43/04 ,  F02M45/00 ,  F02M45/086 ,  F02M55/02 ,  F02M55/025 ,  F02M55/04 ,  F02M61/10 ,  F02M63/029 ,  F02M2200/856 ,  Y02T10/32 ,  Y02T10/36

Abstract: A dual fuel common rail engine supplies pressurized natural gas and liquid diesel fuel at different pressures through a co-axial quill assembly for direct injection from a single fuel injector into an engine cylinder. Pressure waves in the gaseous fuel common rail are damped in a pressure damping chamber of the co-axial quill assembly to promote consistent gaseous fuel injection rates and quantities from the fuel injector.

Abstract translation: 双燃料共轨发动机通过同轴套筒组件在不同的压力下提供加压天然气和液体柴油燃料，用于从单个燃料喷射器直接喷射到发动机气缸中。 气体燃料共轨中的压力波在同轴羽毛笔组件的压力阻尼室中被阻尼，以促进来自燃料喷射器的一致的气体燃料喷射速率和数量。