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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
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
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公开(公告)号：US10851753B2
公开(公告)日：2020-12-01
申请号：US15335066
申请日：2016-10-26
Applicant: Caterpillar Inc.
Inventor： Graeme Mawhinney , Alan R. Stockner , Paul Stark , David Mack
Abstract: A fuel injector is provided which has a valve member, a valve member guide and a spring chamber. Discharge of fuel out of a fuel injector outlet is controlled by movement of the valve member within a bore of the valve member guide. The spring chamber contains a biasing member, which is a compression spring, and which biases the valve member into contact with a valve seat when in a closed configuration. The fuel supply passage is provided, which by-passes the spring chamber, to direct a flow of the fuel to an outlet chamber of the fuel injector, and the cleaning fluid supply passage is provided to supply a pressurized cleaning fluid to a second end of the bore to restrict leakage of the fuel from the outlet chamber towards the second end of the bore along a clearance extending between the valve member and the valve member guide.
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公开(公告)号：US10519877B2
公开(公告)日：2019-12-31
申请号：US15355270
申请日：2016-11-18
Applicant: Caterpillar Inc.
Inventor： Alan R. Stockner , Thomas J. Crowell , Scott F. Shafer
IPC: F02D19/06 , F02D33/00 , F02D41/00 , F02B43/10 , F02D41/14 , F02D41/22 , F02D29/02 , F02D35/02 , F02D19/10
Abstract: A control system for a dual fuel engine having a liquid fuel supply and a gaseous fuel supply is disclosed. The control system may include at least one sensor operably coupled to a cylinder of the dual fuel engine and configured to monitor cylinder condition and transmit a cylinder condition signal. Additionally, a controller may be communicably coupled with the at least one sensor and the controller may be configured to receive the cylinder condition signal and determine whether the cylinder is operating in an abnormal operating condition. Whereas the controller determines the cylinder is operating in the abnormal operating condition, the controller sends a control signal for the liquid fuel supply to provide an amount of liquid fuel which is greater than an amount of liquid fuel supplied to the cylinder during a normal operating condition.
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公开(公告)号：US10316839B2
公开(公告)日：2019-06-11
申请号：US15378240
申请日：2016-12-14
Applicant: Caterpillar Inc.
Inventor： Aaron M. Brown , Alan R. Stockner
Abstract: A pump plunger is disclosed. The plunger may include a proximal end and a distal end opposite the proximal end. The plunger may also include a body portion extending between the proximal end and a second transition datum, and additionally include a transition section extending between a first transition datum and the second transition datum. The transition section may have a non-linear geometric profile. A first shoulder portion may be positioned adjacent to the transition section that may extend between the second transition datum and a third datum. The third datum may be positioned radially inward of the second transition datum. The plunger may also include a tip portion positioned adjacent to the first shoulder portion that may extend between the third datum and a fourth datum positioned at the distal end. The fourth datum may be positioned radially inward of the third datum.
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公开(公告)号：US10184462B2
公开(公告)日：2019-01-22
申请号：US14934593
申请日：2015-11-06
Applicant: Caterpillar Inc.
Inventor： Alan R. Stockner
Abstract: A cryogenic pump for pumping cryogenic fluid is provided. The pump includes a pump assembly adapted for exposure to cryogenic fluid that includes a plurality of pumping elements disposed about a pump axis. A drive assembly drives the pumping elements to pump cryogenic fluid. A plurality of actuating elements are arranged circumferentially about the pump axis, each actuating element operatively interconnecting the drive assembly with a respective one of the pumping elements. Each actuating element includes a first portion disposed a first radial distance from the pump axis and a second portion disposed a second radial distance from the pump axis with the first radial distance being less than the second radial distance at ambient temperature.
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Patent Agency Ranking
公开(公告)号：US09989048B2
公开(公告)日：2018-06-05
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.
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公开(公告)号：US20180142629A1
公开(公告)日：2018-05-24
申请号：US15355270
申请日：2016-11-18
Applicant: Caterpillar Inc.
Inventor： Alan R. Stockner , Thomas J. Crowell , Scott F. Shafer
Abstract: A control system for a dual fuel engine having a liquid fuel supply and a gaseous fuel supply is disclosed. The control system may include at least one sensor operably coupled to a cylinder of the dual fuel engine and configured to monitor cylinder condition and transmit a cylinder condition signal. Additionally, a controller may be communicably coupled with the at least one sensor and the controller may be configured to receive the cylinder condition signal and determine whether the cylinder is operating in an abnormal operating condition. Whereas the controller determines the cylinder is operating in the abnormal operating condition, the controller sends a control signal for the liquid fuel supply to provide an amount of liquid fuel which is greater than an amount of liquid fuel supplied to the cylinder during a normal operating condition.
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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
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.
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公开(公告)号：US20170130708A1
公开(公告)日：2017-05-11
申请号：US14934593
申请日：2015-11-06
Applicant: Caterpillar Inc.
Inventor： Alan R. Stockner
CPC classification number: F04B15/08 , F04B1/12 , F04B9/02 , F04B27/0878 , F04B27/0891 , F04B27/0895 , F04B27/10 , F04B53/10 , F04B53/14 , F04B53/16 , F04B2015/081
Abstract: A cryogenic pump for pumping cryogenic fluid is provided. The pump includes a pump assembly adapted for exposure to cryogenic fluid that includes a plurality of pumping elements disposed about a pump axis. A drive assembly drives the pumping elements to pump cryogenic fluid. A plurality of actuating elements are arranged circumferentially about the pump axis, each actuating element operatively interconnecting the drive assembly with a respective one of the pumping elements. Each actuating element includes a first portion disposed a first radial distance from the pump axis and a second portion disposed a second radial distance from the pump axis with the first radial distance being less than the second radial distance at ambient temperature.
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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
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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