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：US10024311B2

公开(公告)日：2018-07-17

申请号：US14820326

申请日：2015-08-06

Applicant: Caterpillar Inc.

Inventor： Cory A. Brown ,  Adrienne M. Brasche ,  Daniel R. Baldwin ,  Sudhindra K. Ayanji ,  Joshua W. Steffen

IPC: F04B15/08 ,  F04B23/02 ,  F04B37/08

Abstract: A cryogenic pump for pumping liquefied natural gas (LNG) from a cryogenic tank storing LNG includes a drive assembly and a pump assembly disposed along a pump axis. The drive assembly includes a spool housing having a plurality of spool valves arranged around the pump axis, a tappet housing having a plurality of tappet bores with slidable tappets arranged around the pump axis, and spring housing including a plurality of movably disposed pushrods urged upward by a plurality of associated pushrod springs. Hydraulic fluid received by a hydraulic fluid inlet in the drive assembly is directed by the spool valves to the tappet bores to move the tappets downward against the pushrods. To collect the hydraulic fluid, the lowermost spring housing also includes a collection cavity formed therein that can return the hydraulic fluid to a hydraulic fluid outlet.

公开(公告)号：US20170002800A1

公开(公告)日：2017-01-05

申请号：US14788988

申请日：2015-07-01

Applicant: CATERPILLAR INC.

Inventor： Sunil J. Bean ,  Cory A. Brown

IPC: F04B15/08 ,  F04B9/107 ,  F04B53/16 ,  F04B49/22 ,  F04B53/14 ,  F04B53/10 ,  F04B19/22 ,  F04B49/06

CPC classification number: F04B15/08 ,  F04B9/107 ,  F04B23/02 ,  F04B23/06 ,  F04B37/08 ,  F04B49/06 ,  F04B49/22 ,  F04B53/10 ,  F04B53/14 ,  F04B53/16 ,  F04B2015/081 ,  Y10S417/901

Abstract: A cryogenic pump system includes a supply of liquid natural gas, a source of hydraulic fluid, a cryogenic pump, and an electronic control module. The cryogenic pump is operatively arranged with the supply of liquid natural gas and the source of hydraulic fluid. The cryogenic pump is configured to operate using the source of hydraulic fluid to compress at least some of the supply of liquid natural gas for delivery to an engine. The electronic control module is operably arranged with the cryogenic pump and configured to selectively operate the cryogenic pump. Control strategies for operating the cryogenic pump system are disclosed which have reduced power demands.

Abstract translation: 低温泵系统包括供应液体天然气，液压流体源，低温泵和电子控制模块。 低温泵可操作地配置有供应液体天然气和液压流体源。 低温泵构造成使用液压流体源进行操作，以压缩至少一些液体天然气供应以便输送到发动机。 电子控制模块可操作地布置有低温泵并且被配置为选择性地操作低温泵。 公开了用于操作低温泵系统的控制策略，其具有降低的功率需求。

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：US09200560B2

公开(公告)日：2015-12-01

申请号：US13739115

申请日：2013-01-11

Applicant: Caterpillar Inc.

Inventor： Dana R. Coldren ,  Cory A. Brown ,  Martin L. Willi

IPC: F02B19/12 ,  F02M21/02

CPC classification number: F02B19/12 ,  F02M21/0245 ,  F02M21/0275 ,  F02M21/0281 ,  Y02T10/32

Abstract: A gaseous fuel engine combines the efficiencies associated with high compression ratio engines with the attractiveness of fueling with natural gas. Each engine cylinder has an associated fuel injector positioned for direct injection and supplied with gaseous fuel from a high pressure common rail. A separate ignition prechamber is also supplied with natural gas and includes an ignition device. Hot gas generated by igniting a mixture of gaseous fuel and air in the prechamber are used to ignite a much larger charge of gaseous fuel injected into the engine cylinder from the fuel injector. The engine has a compression ratio greater than 14: to 1.

Abstract translation: 气体燃料发动机将与高压缩比发动机相关联的效率与天然气加燃料的吸引力相结合。 每个发动机气缸具有相关联的燃料喷射器，定位用于直接喷射并从高压共轨供应气态燃料。 单独的点火前置机还配有天然气，并包括点火装置。 通过点燃预燃室中的气体燃料和空气的混合物而产生的热气体用于点燃从燃料喷射器喷射到发动机气缸中的更大量的气体燃料。 发动机的压缩比大于14：1。

公开(公告)号：US20140238353A1

公开(公告)日：2014-08-28

申请号：US13778343

申请日：2013-02-27

Applicant: CATERPILLAR INC.

Inventor： Cory A. Brown ,  Michael A. Brown ,  Steven Thomas Grant ,  Daniel Reese Puckett, Jr.

IPC: F02M51/06

CPC classification number: F02M51/06 ,  F02D19/025 ,  F02D19/08 ,  Y02T10/32 ,  Y02T10/36

Abstract: Methods and systems for detecting leakage of a liquid fuel into a gas fuel rail of a dual-fuel system for an internal combustion engine are disclosed. The methods and systems include sending an injection signal from a controller to a fuel injector and subsequently injecting gas fuel and liquid fuel into a cylinder for combustion. A pressure in the gas rail detects the pressure in the gas rail over a pre-determined time period after the injection event. A controller measures pressure fluctuations in the gas rail over a pre-determined time period after the injection event. If the pressure in the gas rail fluctuates by more than the pre-determined amount, the controller is programmed to take at least one mitigating action to prevent or limit damage to the engine.

Abstract translation: 公开了一种用于检测液体燃料进入用于内燃机的双燃料系统的气体燃料轨道的泄漏的方法和系统。 所述方法和系统包括将喷射信号从控制器发送到燃料喷射器，随后将气体燃料和液体燃料喷射到用于燃烧的气缸中。 气体导轨中的压力在喷射事件之后的预定时间段内检测气轨中的压力。 控制器在注射事件之后的预定时间段内测量气轨中的压力波动。 如果气体轨道中的压力波动超过预定量，则控制器被编程为采取至少一个减轻措施来防止或限制对发动机的损坏。

公开(公告)号：US20140158224A1

公开(公告)日：2014-06-12

申请号：US13710984

申请日：2012-12-11

Applicant: CATERPILLAR INC.

Inventor： Cory A. Brown

IPC: B61C17/02

CPC classification number: B61C17/02 ,  Y10T137/6858 ,  Y10T137/6866 ,  Y10T137/6873 ,  Y10T137/7727 ,  Y10T137/7784 ,  Y10T137/7785

Abstract: A fuel supply arrangement adapted for use with a locomotive system. The fuel supply arrangement includes a flow line to supply the fuel from a tender car to an engine car. Further, a quick disconnect coupling is provided on the flow line. A first control system is provided on the flow line configured to stop the supply of the fuel in an event of breaking of the flow line.

Abstract translation: 适于与机车系统一起使用的燃料供应装置。 燃料供应装置包括用于将来自招标车的燃料供应到发动机轿厢的流动管线。 此外，在流动管线上提供快速断开连接。 在流路线上设置第一控制系统，该流路线在流路断裂的情况下停止燃料的供给。

公开(公告)号：US20140091159A1

公开(公告)日：2014-04-03

申请号：US13630212

申请日：2012-09-28

Applicant: CATERPILLAR INC.

Inventor： Cory A. Brown ,  Adrienne M. Brasche

IPC: F02M63/00

CPC classification number: F02M63/00 ,  F02M43/04 ,  F02M45/086 ,  F02M47/027 ,  F02M61/20

Abstract: A fuel injector has the ability to inject two fuels that differ in at least one of pressure, chemical identity and matter phase, such as liquid diesel fuel and nature gas. A first direct operated check includes a closing hydraulic surface exposed to fluid pressure in a first control chamber, and is normally biased toward a closed position by a first spring. A second direct operated check has a closing hydraulic surface exposed to fluid pressure in a second control chamber, and is biased toward a closed position with a second spring. The first spring and the second spring are located on opposite sides of a plane oriented perpendicular to a long axis of the injector body, in part to satisfy packaging constraints when the direct operated checks are arranged in a side by side parallel configuration.

Abstract translation: 燃料喷射器具有注入在压力，化学特性和物质相中的至少一种不同的两种燃料的能力，例如液体柴油燃料和天然气。 第一直接操作检查包括在第一控制室中暴露于流体压力的关闭液压表面，并且通常由第一弹簧偏压到关闭位置。 第二直接操作检查具有在第二控制室中暴露于流体压力的关闭液压表面，并且利用第二弹簧偏压到关闭位置。 第一弹簧和第二弹簧位于垂直于喷射器主体的长轴定向的平面的相对侧上，部分以满足直接操作检查并排配置时的包装约束。

公开(公告)号：US11840993B1

公开(公告)日：2023-12-12

申请号：US18104369

申请日：2023-02-01

Applicant: Caterpillar Inc.

Inventor： Cory A. Brown ,  Sana Mahmood ,  Glenn B. Cox ,  Zhenyu Li

IPC: F02M47/02 ,  F02M53/04 ,  F02M63/00 ,  F02M55/02 ,  F02M55/00

CPC classification number: F02M47/027 ,  F02M53/043 ,  F02M63/0022 ,  F02M63/0033 ,  F02M63/0054 ,  F02M63/0077 ,  F02M55/002 ,  F02M55/008 ,  F02M55/025

Abstract: A fuel injector assembly for a fuel-actuated fuel injector includes an injector body, and an injection control valve assembly. The injector body includes therein a low-pressure fuel passage extending from a clamping face to an armature cavity to convey spent actuating fuel to the armature cavity. The fuel injector assembly also includes a flushing drain formed by the injector body and fluidly connected to at least one of a valve pin bore in the injector body or the armature cavity. The flushing drain forms, together with the low-pressure fuel passage and the armature cavity, a cooling circuit for the spent actuating fuel. The flushing drain extends to a drain opening formed in an outer body surface of the injector body. Related methodology is also disclosed.