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    Safety Hydraulic Dump for a Cryogenic Pump
    23.
    发明申请
    Safety Hydraulic Dump for a Cryogenic Pump 审中-公开

    公开(公告)号：US20180058218A1

    公开(公告)日：2018-03-01

    申请号：US15250312

    申请日：2016-08-29

    Applicant: Caterpillar Inc.

    Inventor： Sunil J. Bean ,  Alan R. Stockner ,  Mingchun Dong

    IPC: F01B23/08 ,  F04B9/103 ,  F04B15/08 ,  F04B23/02 ,  F01B1/01 ,  F01B25/00 ,  F01B31/28

    CPC classification number: F04B23/021 ,  F04B9/103 ,  F04B15/08 ,  F04B2015/081

    Abstract: A cryogenic fluid pump includes a drive assembly and a pumping assembly. The drive assembly includes a cylinder. The cylinder includes an annular dump channel formed in and extending about an interior wall of the cylinder. A piston is reciprocatable within the cylinder between a first and second position. A hydraulic pressure chamber is defined by the cylinder and the piston. The piston includes an axial spill passage in communication with the pressure chamber and a transverse spill passage in communication with the axial spill passage. The transverse spill passage includes a piston dump port which is sealed to the cylinder in the first position and in the second position unsealed to the cylinder to permit fluid exit from the pressure chamber. The second position includes an over travel state and the dump area of the piston dump port when unsealed to the cylinder increases as the piston advances.

    End of Stroke Detection for Plunger Velocity Correction
    24.
    发明申请
    End of Stroke Detection for Plunger Velocity Correction 有权
    柱塞速度校正的行程检测结束

    公开(公告)号：US20170030344A1

    公开(公告)日：2017-02-02

    申请号：US14809861

    申请日：2015-07-27

    Applicant: Caterpillar Inc.

    Inventor： Sunil J. Bean ,  Alan R. Stockner ,  Joshua W. Steffen ,  Cory A. Brown

    IPC: F04B49/00 ,  F04B1/14 ,  G01L23/26 ,  F04B53/14 ,  F04B51/00 ,  F04B1/12 ,  F04B1/28

    CPC classification number: F04B49/002 ,  F04B1/128 ,  F04B1/146 ,  F04B1/28 ,  F04B9/107 ,  F04B15/08 ,  F04B49/065 ,  F04B51/00 ,  F04B53/14 ,  G01L23/26

    Abstract: A method for controlling a stroke velocity in a pump includes using a sensor to detect a start of a pump stroke and an end of the pump stroke. A stroke time is calculated, the stroke time being a time period between the start of the pump stroke and the end of the pump stroke. The stroke velocity is calculated based on a stroke length and the stroke time. The stroke velocity is compared to a reference stroke velocity. A hydraulic supply pressure to the pump is increased if the calculated stroke velocity is less than the reference stroke velocity, and the hydraulic supply pressure is decreased if the calculated stroke velocity is more than the reference stroke velocity.

    Abstract translation: 用于控制泵中冲程速度的方法包括使用传感器来检测泵冲程的开始和泵冲程的结束。 计算行程时间，行程时间是泵行程开始和泵冲程结束之间的时间段。 行程速度根据行程长度和行程时间计算。 将行程速度与参考行程速度进行比较。 如果计算的行程速度小于参考行程速度，则泵的液压供应压力增加，并且如果计算的行程速度大于参考行程速度，则液压供应压力降低。

    Hydraulic Drive Multi-Element Cryogenic Pump
    25.
    发明申请
    Hydraulic Drive Multi-Element Cryogenic Pump 审中-公开
    液压驱动多元件低温泵

    公开(公告)号：US20160377068A1

    公开(公告)日：2016-12-29

    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: F04B15/08 ,  F04B7/02 ,  F04B1/12 ,  F04B1/28 ,  F04B1/16

    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.

    Abstract translation: 低温流体泵包括多个泵送元件，所述多个泵送元件中的每一个具有致动器部分，所述致动器部分响应于电子控制器的命令而相关联并且被配置为选择性地激活推杆的一端，激活部分相关联 其具有推杆的相对端，以及与激活部分相关联的泵送部分。 对于多个泵送元件中的每一个，泵送部分被启动，用于通过致动部分泵送流体，该致动部分由致动器部分激活。 电子控制器被配置为选择性地激活多个泵送元件中的每一个，使得来自低温流体泵的流体流由连续泵送元件的激活之间选定的停留时间的多个泵送元件的连续激活产生。

    Piston Seal and Pump Including Same
    27.
    发明申请
    Piston Seal and Pump Including Same 审中-公开
    活塞密封和泵包括相同

    公开(公告)号：US20160131132A1

    公开(公告)日：2016-05-12

    申请号：US14538269

    申请日：2014-11-11

    Applicant: Caterpillar Inc.

    Inventor： Alan R. Stockner ,  Dana R. Coldren

    IPC: F04B53/14 ,  F16J9/26 ,  F16J9/20 ,  F16J9/06

    CPC classification number: F04B53/143 ,  F04B53/02

    Abstract: A seal for a piston of a positive displacement pump includes an annular seal element, a radially outer surface of the annular seal element defining a longitudinal axis, and an annular energizer disposed between the annular seal element and the longitudinal axis along a radial direction. The annular energizer has a resilience along the radial direction to bias the annular seal element away from the longitudinal axis along the radial direction, the radial direction being perpendicular to the longitudinal axis. The radially outer surface of the annular seal element defines at least one circumferential groove about the annular seal element, and a concavity of the at least one circumferential groove faces away from the longitudinal axis along the radial direction

    Abstract translation: 用于容积式泵的活塞的密封件包括环形密封元件，限定纵向轴线的环形密封元件的径向外表面，以及沿着径向设置在环形密封元件和纵向轴线之间的环形增压器。 环形增压器具有沿着径向方向的弹性，以使环形密封元件沿着径向偏离纵向轴线，径向方向垂直于纵向轴线。 环形密封元件的径向外表面限定围绕环形密封元件的至少一个周向凹槽，并且至少一个周向凹槽的凹部沿径向方向远离纵向轴线

    Engine system having hydraulically actuated gas injector
    30.
    发明授权
    Engine system having hydraulically actuated gas injector 有权
    具有液压致动气体喷射器的发动机系统

    公开(公告)号：US09447740B2

    公开(公告)日：2016-09-20

    申请号：US14311770

    申请日：2014-06-23

    Applicant: Caterpillar Inc.

    Inventor： Aaron Michael Brown ,  David E. Hackett ,  Lifeng Wang ,  Scott F. Shafer ,  Alan R. Stockner ,  Martin A. Lehman

    IPC: F02M51/00 ,  F02D19/08 ,  F02M21/02 ,  F02M43/04 ,  F02M51/06 ,  F02M61/14 ,  F02D19/06 ,  F02F1/24

    CPC classification number: F02D19/08 ,  F02D19/0689 ,  F02D19/0694 ,  F02F1/242 ,  F02M21/0254 ,  F02M21/0275 ,  F02M43/04 ,  F02M51/06 ,  F02M61/14 ,  Y02T10/32 ,  Y02T10/36

    Abstract: A fuel injector is disclosed for use in an engine system. The fuel injector may have a body defining a gas inlet, an oil inlet, and an oil outlet. The fuel injector may also have a nozzle connected to the body and having a base end in fluid communication with the gas inlet, and an injection tip located opposite the base end. The fuel injector may also have a valve check disposed in the nozzle and movable to selectively block and unblock the injection tip of the nozzle, and a plunger disposed in the body between the oil inlet and the oil outlet. The plunger may be movable between a flow-passing position and a flow-blocking position to cause movement of the valve check through the injection tip. The injector may further have a solenoid actuator configured to selectively move the plunger.

    Abstract translation: 公开了一种用于发动机系统中的燃料喷射器。 燃料喷射器可以具有限定气体入口，进油口和出油口的主体。 燃料喷射器还可以具有连接到主体并具有与气体入口流体连通的基端的喷嘴，以及与基端相对的喷射尖端。 燃料喷射器还可以具有设置在喷嘴中并可移动以便选择性地阻塞和解除喷嘴的喷射尖端的阀检查，以及设置在油入口和出油口之间的主体中的柱塞。 柱塞可以在流动通过位置和阻流位置之间移动，以引起阀门检查通过注射尖端的移动。 喷射器还可以具有构造成选择性地移动柱塞的螺线管致动器。

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