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公开(公告)号：US20220282742A1
公开(公告)日：2022-09-08
申请号：US17189914
申请日：2021-03-02
Applicant: Caterpillar Inc.
Inventor： Kevin L. Martin , Paul A. Zwart , Michael Charles Marstall , Mikhail A. Sorokin , Lonnie James Devier
Abstract: A method of manufacturing a hydraulic valve component using additive manufacturing includes laying successive layers to form a flow aperture for a hydraulic valve component, and creating a lattice or mesh structure that at least partially defines the flow aperture of the hydraulic valve component, or a feature that forms an undercut along a direction that is parallel to a flow direction of the flow aperture, or a flow aperture having a size varying along a circumferential direction of the valve component.
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公开(公告)号：US11662031B2
公开(公告)日：2023-05-30
申请号：US17189914
申请日：2021-03-02
Applicant: Caterpillar Inc.
Inventor： Kevin L. Martin , Paul A. Zwart , Michael Charles Marstall , Mikhail A. Sorokin , Lonnie James Devier
IPC: F16K11/07 , B33Y80/00 , B33Y10/00 , B22F10/28 , F15B11/18 , F15B13/08 , F16K15/04 , F16K17/04 , F16K17/08
CPC classification number: F16K11/07 , B22F10/28 , B33Y10/00 , B33Y80/00 , F15B11/183 , F15B13/0842 , F16K15/044 , F16K17/0406 , F16K17/08
Abstract: A method of manufacturing a hydraulic valve component using additive manufacturing includes laying successive layers to form a flow aperture for a hydraulic valve component, and creating a lattice or mesh structure that at least partially defines the flow aperture of the hydraulic valve component, or a feature that forms an undercut along a direction that is parallel to a flow direction of the flow aperture, or a flow aperture having a size varying along a circumferential direction of the valve component.
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3.发明授权公开(公告)号：US10323384B2
公开(公告)日：2019-06-18
申请号：US15373074
申请日：2016-12-08
Applicant: Caterpillar Inc.
Inventor： Vickram Murugesan , Hongliu Du , Lonnie James Devier , Frank Breier , Mandi Henderson , Matthew James Beschorner
Abstract: A ride control system includes four independent metering valves (IMVs) that are independently and selectively controlled by a controller for attenuating oscillations in a hydraulic actuator of a machine. The controller is configured to open at least one of the IMVs for supplying pressurized fluid from a tank to a head end chamber of the hydraulic actuator when a pressure of the head end chamber drops to a value less than an initially registered pressure. Additionally, when the displacement of the piston block is positive and the pressure in the head end chamber falls to a value less than the pressure of fluid in a rod end chamber of the hydraulic actuator, the controller may also open another one of the IMVs by which fluid from the rod end chamber could be supplied to the head end chamber for supplementing pump flow and attenuating oscillations in the hydraulic actuator.
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4.发明申请公开(公告)号：US20180163373A1
公开(公告)日：2018-06-14
申请号：US15373074
申请日：2016-12-08
Applicant: Caterpillar Inc.
Inventor： Vickram Murugesan , Hongliu Du , Lonnie James Devier , Frank Breier , Mandi Henderson , Matthew James Beschorner
CPC classification number: E02F9/2207 , E02F3/283 , E02F9/0883 , E02F9/2228 , E02F9/2296 , F15B1/26 , F15B11/08 , F15B13/0401 , F15B2211/20546 , F15B2211/7051
Abstract: A ride control system includes four independent metering valves (IMVs) that are independently and selectively controlled by a controller for attenuating oscillations in a hydraulic actuator of a machine. The controller is configured to open at least one of the IMVs for supplying pressurized fluid from a tank to a head end chamber of the hydraulic actuator when a pressure of the head end chamber drops to a value less than an initially registered pressure. Additionally, when the displacement of the piston block is positive and the pressure in the head end chamber falls to a value less than the pressure of fluid in a rod end chamber of the hydraulic actuator, the controller may also open another one of the IMVs by which fluid from the rod end chamber could be supplied to the head end chamber for supplementing pump flow and attenuating oscillations in the hydraulic actuator.
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