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公开(公告)号：US10066612B2
公开(公告)日：2018-09-04
申请号：US14788988
申请日：2015-07-01
Applicant: Caterpillar Inc.
Inventor： Sunil J. Bean , Cory A. Brown
IPC: F04B15/08 , F04B37/08 , F04B9/107 , F04B49/06 , F04B49/22 , F04B53/14 , F04B53/10 , F04B53/16 , F04B23/02 , F04B23/06
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.
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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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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：US09915250B2
公开(公告)日：2018-03-13
申请号：US14833847
申请日：2015-08-24
Applicant: Caterpillar Inc.
Inventor： Adrienne M. Brasche , Cory A. Brown , Sunil J. Bean
IPC: F04B15/08 , F04B49/22 , F04B53/14 , F04B7/04 , F01L9/02 , F04B37/08 , F04B53/10 , F04B19/22 , F04B9/117
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.
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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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Patent Agency Ranking
公开(公告)号：US10273955B2
公开(公告)日：2019-04-30
申请号：US15352284
申请日：2016-11-15
Applicant: Caterpillar Inc.
Inventor： Sunil J. Bean , Cory A. Brown
Abstract: A hydraulic piston pump includes a reciprocal piston disposed in a blind housing bore of a piston housing 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 of 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：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：US20170159625A1
公开(公告)日：2017-06-08
申请号：US14961944
申请日：2015-12-08
Applicant: Caterpillar Inc.
Inventor： Adrienne M Brasche , Sunil J. Bean
CPC classification number: F02M43/04 , F02D19/0694 , F02M37/0064 , F02M47/027 , F02M61/10 , F02M2200/16 , Y02T10/36
Abstract: A dual fuel injector configuration is provided that includes a plurality of seals around a fuel check needle to prevent transfer of a gaseous fuel to portions of the injector intended for handling of liquid fuel, prevent transfer of liquid fuel to portions of the injector intended for handling of gaseous fuel, or a combination thereof. At least one seal can correspond to a pressure-assisted sealing member suitable for sealing against transfer of liquid fuel. At least one additional seal can correspond to a pressure-assisted sealing member suitable for sealing against transfer of gaseous fuel. The sealing members can be separated by a backing member that provides structural support for one or both of the sealing members. The volume occupied by the backing member can also include a conduit to an external surface of the injector.
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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
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。
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公开(公告)号：US10041484B2
公开(公告)日：2018-08-07
申请号：US14610669
申请日：2015-01-30
Applicant: Caterpillar Inc.
Inventor： Joshua W. Steffen , Sunil J. Bean , Adrienne M. Brasche , Cory A. Brown , Sana Mahmood
Abstract: A pump is disclosed having a manifold with an inlet, a pressure outlet, and a return outlet. The pump may also have a jacket connected to an end of the manifold to create an enclosure that is in fluid communication with the inlet of the manifold, and at least one pumping mechanism extending from the manifold into the jacket. The at least one pumping mechanism may have an inlet open to the enclosure and an outlet in communication with the pressure outlet of the manifold. The pump may further have a standpipe extending from the manifold into the enclosure. The standpipe may be in communication with the return outlet of the manifold.
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