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公开(公告)号：US20180135622A1
公开(公告)日：2018-05-17
申请号：US15352284
申请日：2016-11-15
Applicant: Caterpillar Inc.
Inventor： Sunil J. Bean , Cory A. Brown
CPC classification number: F04B53/166 , F04B1/12 , F04B1/122 , F04B1/128 , F04B9/109 , F04B9/1176 , F04B15/08 , F04B23/021 , F04B53/14 , F04B53/144 , F04B53/168 , F04B2015/081
Abstract: A hydraulic piston pump includes a piston disposed in a blind housing bore of a piston housing and that reciprocates to generate a pumping action. To accommodate the piston, a piston cartridge is installed in each of the housing bores. The piston cartridge includes a piston sleeve having an inner sleeve periphery, a first outer sleeve periphery, and a second outer sleeve periphery. The inner sleeve periphery is configured to establish sliding contact with the piston. The first outer sleeve periphery has a first outer sleeve diameter that is larger than a second outer sleeve diameter associated with the second outer sleeve periphery. To seal against the blind housing bore, a liner cap having a cylindrical liner wall and an axial liner cover is disposed over the first outer sleeve periphery. The axial liner cover abuts a housing bore ceiling of the blind housing bore and can receive hydraulic fluid there through.
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公开(公告)号：US20180073644A1
公开(公告)日：2018-03-15
申请号：US15264210
申请日：2016-09-13
Applicant: Caterpillar Inc.
Inventor： Sunil J. Bean , Shivangini Singh Hazari
CPC classification number: F16K11/0716 , B23P15/001 , F15B1/00 , F16K11/0712 , F16K31/426
Abstract: A valve spool may include a cylindrical spool body having a spool longitudinal axis, a first spool body end wall and a second spool body end wall disposed axially opposite the first spool body end wall, and a spool outer surface. The spool outer surface may include a first spool guide region proximate the first spool body end wall and having a spool guide region outer diameter, a second spool guide region proximate the second spool body end wall and having the spool guide region outer diameter, and a spool tight clearance region disposed between the first spool guide region and the second spool guide region. The spool tight clearance region may have a spool tight clearance region outer diameter that is greater than the spool guide region outer diameter.
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公开(公告)号：US20170058878A1
公开(公告)日：2017-03-02
申请号：US14833847
申请日：2015-08-24
Applicant: Caterpillar Inc.
Inventor： Adrienne M. Brasche , Cory A. Brown , Sunil J. Bean
CPC classification number: F04B15/08 , F01L9/02 , F04B7/04 , F04B9/1178 , F04B19/22 , F04B37/08 , F04B37/085 , F04B49/22 , F04B49/225 , F04B53/10 , F04B53/14 , F04B53/146 , F04B53/148 , F04B2015/081 , F17C2227/0135 , F17C2227/0142 , F17C2227/0178 , Y10S417/901
Abstract: A drive system for a cryogenic pump is provided including a spool housing having a plurality of valves disposed therein about a pump axis and a tappet housing including a plurality of tappet bores, each tappet bore in communication with a respective one of the plurality of valves. A collection cavity collects hydraulic fluid from the tappet bores. A pump flange includes a fluid inlet and a fluid outlet. An inlet manifold directs hydraulic fluid received through the fluid inlet to each of the plurality of valves. An outlet manifold directs hydraulic fluid from each of the valves and the collection cavity to the fluid outlet.
Abstract translation: 提供了一种用于低温泵的驱动系统，其包括具有围绕泵轴设置的多个阀的卷轴壳体和包括多个挺杆孔的挺杆壳体，每个挺杆孔与多个阀中的相应一个连通。 收集腔从挺杆孔收集液压流体。 泵法兰包括流体入口和流体出口。 入口歧管将通过流体入口接收的液压流体引导到多个阀中的每一个。 出口歧管将液压流体从每个阀和收集腔引导到流体出口。
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Patent Agency Ranking
公开(公告)号：US10309543B2
公开(公告)日：2019-06-04
申请号：US15264210
申请日：2016-09-13
Applicant: Caterpillar Inc.
Inventor： Sunil J. Bean , Shivangini Singh Hazari
Abstract: A valve spool may include a cylindrical spool body having a spool longitudinal axis, a first spool body end wall and a second spool body end wall disposed axially opposite the first spool body end wall, and a spool outer surface. The spool outer surface may include a first spool guide region proximate the first spool body end wall and having a spool guide region outer diameter, a second spool guide region proximate the second spool body end wall and having the spool guide region outer diameter, and a spool tight clearance region disposed between the first spool guide region and the second spool guide region. The spool tight clearance region may have a spool tight clearance region outer diameter that is greater than the spool guide region outer diameter.
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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
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.
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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
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。
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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
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。
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公开(公告)号：US20140352664A1
公开(公告)日：2014-12-04
申请号：US14460623
申请日：2014-08-15
Applicant: Caterpillar Inc.
Inventor： Dana R. Coldren , Dennis H. Gibson , Sana Mahmood , Sunil J. Bean
IPC: F02D19/06
CPC classification number: F02D19/0678 , F02D19/0623 , F02D19/0647 , F02D19/0694 , F02D19/105 , Y02T10/36
Abstract: The present disclosure is related to a flow limiting system for a dual fuel engine is disclosed. The flow limiting system includes a first valve configured to regulate a flow of a liquid fuel therethrough based on a pressure difference across the first valve. The flow limiting system further includes a second valve configured to regulate a flow of a gaseous fuel therethrough based on a pressure difference across the second valve. The second valve includes a valve body movably provided within a valve chamber. The valve body includes a control orifice extending therethrough. The valve body also includes grooves defined on an outer surface thereof.
Abstract translation: 本公开涉及一种用于双燃料发动机的流量限制系统。 流量限制系统包括第一阀，其构造成基于跨越第一阀的压力差来调节液体燃料流过其中的流动。 流量限制系统还包括第二阀，其构造成基于穿过第二阀的压差来调节气体燃料的流动。 第二阀包括可移动地设置在阀室内的阀体。 阀体包括延伸穿过其中的控制孔。 阀体还包括限定在其外表面上的凹槽。
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