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公开(公告)号：US20160377041A1
公开(公告)日：2016-12-29
申请号：US14753613
申请日：2015-06-29
Applicant: Caterpillar Inc.
Inventor： Joshua W. Steffen , Sunil J. Bean
IPC: F02M59/10
CPC classification number: F02D19/0644 , F02D19/0684 , F02D19/0694 , F02D19/10 , F02D41/0027 , F02D41/3845 , F02D2041/3881 , F02D2200/0602 , Y02T10/36
Abstract: A pump has a plurality of pumping elements, each being independently responsive to an actuation signal from a controller. The controller is programmed to maintain a desired pressure at the pump discharge, monitor the fluid pressure at the pump discharge, compare the fluid pressure with the desired fluid pressure to determine a pressure error, provide commands to sequentially actuate the pumping elements when the pressure error is within a threshold range, and provide commands to actuate more than one of the plurality of pumping elements simultaneously, such that more than one pumped amounts of fluid are delivered simultaneously at the pump discharge, when the pressure error droops outside of the threshold range.
Abstract translation: 泵具有多个泵送元件，每个泵送元件独立地响应于来自控制器的致动信号。 控制器被编程为在泵排出时保持期望的压力，监测泵出口处的流体压力，将流体压力与期望的流体压力进行比较以确定压力误差，提供当压力误差时依次致动泵送元件的命令 并且提供用于同时致动多于一个泵送元件的命令，使得当压力误差下降到阈值范围之外时，在泵排出时同时输送多于一个的泵送量的流体。
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公开(公告)号：US08936009B2
公开(公告)日：2015-01-20
申请号：US13665534
申请日：2012-10-31
Applicant: Caterpillar Inc.
Inventor： Daniel R. Puckett , Joshua W. Steffen , Frank J. Lombardi , Steven T. Grant
IPC: F02M21/02
CPC classification number: F02D19/10 , F02D19/0673 , Y02T10/36 , Y10T137/0379 , Y10T137/7782 , Y10T137/7793
Abstract: A pressure regulator is disclosed having a body, a valve seat dividing a cavity of the body into first and second portions, and an end stop movable against a bias to selectively engage the valve seat and isolate the first and second portions. The pressure regulator may also have a first inlet port in the first portion, a first outlet port in the second portion and in fluid communication with the first portion via the valve seat, and a second inlet port in the second portion. The fuel system may also have a valve element in the second portion and movable against a spring bias based on a pressure difference between an open position and a restricted position against the end stop. The fuel system may additionally have an actuator biased to urge the valve element toward the second position and selectively actuated to move away from the valve element.
Abstract translation: 公开了一种压力调节器，其具有主体，阀体将主体的空腔分成第一和第二部分，以及端部止动件，其可抵抗偏压移动，以选择性地接合阀座并隔离第一和第二部分。 压力调节器还可以具有第一部分中的第一入口端口，第二部分中的第一出口端口，并且经由阀座部与第一部分流体连通，以及第二部分中的第二入口端口。 燃料系统还可以在第二部分中具有阀元件，并且可基于相对于端部止挡件的打开位置和限制位置之间的压力差抵抗弹簧偏压运动。 燃料系统可以另外具有偏压的致动器，以将阀元件推向第二位置并且被选择性地致动以远离阀元件移动。
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公开(公告)号：US20140130778A1
公开(公告)日：2014-05-15
申请号：US14159831
申请日：2014-01-21
Applicant: Caterpillar Inc.
Inventor： Daniel R. Puckett , Steven T. Grant , Joshua W. Steffen , Benjamin A. Nash
IPC: F02M39/00
CPC classification number: F02M43/00 , F02D19/022 , F02D19/0647 , F02D41/0025 , F02D2200/06 , F02D2250/18 , F02M21/0215 , F02M21/0221 , F02M21/0245 , F02M21/06 , Y02T10/32 , Y02T10/36
Abstract: A method of operating an engine is disclosed. The method includes estimating an operational status of a cryogenic pump selectively driven by the engine. The cryogenic pump is configured to pressurize a liquefied gaseous fuel. The method also includes estimating a power requirement of the cryogenic pump. The method further includes determining whether the engine is operating on a lug curve. Moreover, the method includes providing additional fuel to the engine in order to increase an engine power beyond the lug curve prior to an operation of the cryogenic pump. The increase in engine power is at least equal to the power requirement of the cryogenic pump.
Abstract translation: 公开了一种操作发动机的方法。 该方法包括估计由发动机选择性驱动的低温泵的操作状态。 低温泵构造成对液化的气态燃料加压。 该方法还包括估计低温泵的功率需求。 该方法还包括确定发动机是否在凸耳曲线上操作。 此外，该方法包括向发动机提供额外的燃料，以便在低温泵的操作之前增加引擎功率超过凸耳曲线。 发动机功率的增加至少等于低温泵的功率要求。
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公开(公告)号：US10006449B2
公开(公告)日：2018-06-26
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
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.
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公开(公告)号：US09810163B2
公开(公告)日：2017-11-07
申请号：US14753613
申请日：2015-06-29
Applicant: Caterpillar Inc.
Inventor： Joshua W. Steffen , Sunil J. Bean
CPC classification number: F02D19/0644 , F02D19/0684 , F02D19/0694 , F02D19/10 , F02D41/0027 , F02D41/3845 , F02D2041/3881 , F02D2200/0602 , Y02T10/36
Abstract: A pump has a plurality of pumping elements, each being independently responsive to an actuation signal from a controller. The controller is programmed to maintain a desired pressure at the pump discharge, monitor the fluid pressure at the pump discharge, compare the fluid pressure with the desired fluid pressure to determine a pressure error, provide commands to sequentially actuate the pumping elements when the pressure error is within a threshold range, and provide commands to actuate more than one of the plurality of pumping elements simultaneously, such that more than one pumped amounts of fluid are delivered simultaneously at the pump discharge, when the pressure error droops outside of the threshold range.
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Patent Agency Ranking
公开(公告)号：US20170016434A1
公开(公告)日：2017-01-19
申请号：US14798058
申请日：2015-07-13
Applicant: CATERPILLAR INC.
Inventor： Joshua W. Steffen , Dana R. Coldren
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.
Abstract translation: 泵具有泵体和至少第一和第二泵送元件，每个泵送元件包括限定头端和杆端的活塞。 泵在入口处接收加压流体，并通过排水口返回流体。 液压分配器用于将延伸活塞的头端流体连接到加压流体，并且延伸活塞的杆端流体到排出口。 液压分配器还将回缩活塞的杆端连接到排水出口，将一个或多个回缩活塞的杆端连接到排水口或低于延伸压力的返回压力。
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公开(公告)号：US09371784B2
公开(公告)日：2016-06-21
申请号：US13725161
申请日：2012-12-21
Applicant: Caterpillar Inc.
Inventor： Joshua W. Steffen , Dana R. Coldren
CPC classification number: F02D19/06 , B64C27/51 , F02D19/024 , F02D19/027 , F02M37/0041 , Y02T10/32 , Y02T10/36
Abstract: A dual fuel system for an engine is disclosed. The dual fuel system may have a first fuel supply providing a first fuel to the engine, and a second fuel supply providing a second fuel. The dual fuel system may also have a regulator configured to pass the second fuel from the second fuel supply to the engine, with the regulator also in fluid communication with the first fuel supply. The dual fuel system may further have a damper in fluid communication with the first fuel supply and an output of the regulator.
Abstract translation: 公开了一种用于发动机的双燃料系统。 双燃料系统可以具有向发动机提供第一燃料的第一燃料供应和提供第二燃料的第二燃料供应。 双燃料系统还可以具有调节器，其被配置为将第二燃料从第二燃料供应传递到发动机，调节器也与第一燃料供应流体连通。 双燃料系统还可以具有与第一燃料供应和调节器的输出流体连通的阻尼器。
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公开(公告)号：US09228507B2
公开(公告)日：2016-01-05
申请号：US13732673
申请日：2013-01-02
Applicant: Caterpillar Inc.
Inventor： Cory A. Brown , Joshua W. Steffen , Dana R. Coldren , Alan R. Stockner , Hoisan Kim , Dianqi Fang
Abstract: A dual fuel common rail system may be operated in a regular mode in which a relatively large charge of gaseous fuel is ignited by compression igniting a relatively small injection quantity of liquid diesel fuel. The dual fuel system may be operated in a single fuel limp home mode in which liquid diesel fuel is injected at higher pressures. Over pressurization of the gaseous fuel side of the fuel system due to leaked liquid fuel is avoided by regularly injecting leaked liquid fuel, but not gaseous fuel, from the gaseous nozzle outlet set during the limp home mode of operation.
Abstract translation: 双燃料共轨系统可以以常规模式操作，其中相对较大量的气体燃料通过压缩点燃，点燃相对较小量的液体柴油燃料。 双燃料系统可以在单一燃料跛行家庭模式中操作，其中液体柴油燃料在较高压力下喷射。 由于泄漏的液体燃料，燃料系统的气体燃料侧的过度加压通过在跛行家庭操作模式期间从设置的气体喷嘴出口定期注入泄漏的液体燃料而不是气体燃料来避免。
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公开(公告)号：US20140182552A1
公开(公告)日：2014-07-03
申请号：US13732673
申请日：2013-01-02
Applicant: CATERPILLAR INC.
Inventor： Cory A. Brown , Joshua W. Steffen , Dana R. Coldren , Alan R. Stockner , Hoisan Kim , Dianqi Fang
IPC: F02M69/50
Abstract: A dual fuel common rail system may be operated in a regular mode in which a relatively large charge of gaseous fuel is ignited by compression igniting a relatively small injection quantity of liquid diesel fuel. The dual fuel system may be operated in a single fuel limp home mode in which liquid diesel fuel is injected at higher pressures. Over pressurization of the gaseous fuel side of the fuel system due to leaked liquid fuel is avoided by regularly injecting leaked liquid fuel, but not gaseous fuel, from the gaseous nozzle outlet set during the limp home mode of operation.
Abstract translation: 双燃料共轨系统可以以常规模式操作，其中相对较大量的气体燃料通过压缩点燃，点燃相对较小量的液体柴油燃料。 双燃料系统可以在单一燃料跛行家庭模式中操作，其中液体柴油燃料在较高压力下喷射。 由于泄漏的液体燃料，燃料系统的气体燃料侧的过度加压通过在跛行家庭操作模式期间从设置的气体喷嘴出口定期注入泄漏的液体燃料而不是气体燃料来避免。
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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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