公开(公告)号：US11542965B2

公开(公告)日：2023-01-03

申请号：US16817788

申请日：2020-03-13

申请人： AUDI AG

发明人： Andreas Birk

IPC分类号： F15B19/00 ,  F15B21/00 ,  G05D19/00 ,  G05D19/02

摘要： A method for operating a hydraulic valve of a hydraulic device of a motor vehicle transmission device, wherein an actuating current of the hydraulic valve is superposed with a modulation alternating current in order to adjust a shaking vibration of the hydraulic valve by a control device, wherein a deviation between an actual pressure resulting from the actuating current and a setpoint pressure determined as a function of the actuating current is determined for the hydraulic device by means of an electronic computing device, and an amplitude and/or a frequency of the modulation alternating current is increased as compared to a starting value equalizing a hysteresis of the actual pressure relative to the setpoint pressure, as a function of a tolerance range being exceeded by the determined deviation.

公开(公告)号：US20220412382A1

公开(公告)日：2022-12-29

申请号：US17851299

申请日：2022-06-28

申请人： ZF CV SYSTEMS EUROPE BV

发明人： Adam ZAWISZA

IPC分类号： F15B21/048 ,  F15B21/044 ,  F15B21/00

摘要： A twin chamber air dryer for a pneumatic system of a commercial vehicle comprises: a supply inlet port, a supply outlet, a compressor control outlet, and an exhaust outlet; a first desiccant cartridge and a second desiccant cartridge, to be operated alternately; a toggling valve assembly for switching between the first and second desiccant cartridges; a pneumatically controlled purge valve switchable between a blocking basic position and an activated position; and a solenoid valve assembly. The solenoid valve assembly comprises a directional control solenoid valve for receiving an electrical direction control signal and controlling the toggling valve assembly, a regeneration solenoid valve for receiving an electrical regeneration control signal and providing pressurized air in regeneration phases of the desiccant cartridge, and a governor solenoid valve for receiving an electrical governor control signal and controlling the purge valve and a compressor mode.

公开(公告)号：US11536298B2

公开(公告)日：2022-12-27

申请号：US17562449

申请日：2021-12-27

申请人： Danfoss Power Solutions II Technology A/S

发明人： QingHui Yuan

IPC分类号： F15B21/00 ,  E04G21/04 ,  E02F9/22 ,  F15B13/01 ,  F15B15/20 ,  F15B20/00

摘要： A system for damping mass-induced vibrations in a machine having a long boom or elongate member, the movement of which causes mass-induced vibration in such boom or elongate member. The system comprises at least one motion sensor operable to measure movement of such boom or elongate member resulting from mass-induced vibration, and a processing unit operable to control a first control valve spool in a pressure control mode and a second control valve spool in a flow control mode in order to adjust the hydraulic fluid flow to the load holding chamber of an actuator attached to the boom or elongate member to dampen the mass-induced vibration. The system further comprises a control manifold fluidically interposed between the actuator and control valve spools that causes the first and second control valve spools to operate, respectively, in pressure and flow control modes.

公开(公告)号：US20220403859A1

公开(公告)日：2022-12-22

申请号：US17845083

申请日：2022-06-21

申请人： Nott Company

发明人： Dusten Carl O'Konek, JR. ,  Anthony Reid Hennum

IPC分类号： F15B15/18 ,  F15B21/00 ,  F15B1/26

摘要： The disclosure relates to an electronic pump that can be used in a motor vehicle, particularly for generating hydraulic fluid flow for steering and braking, or to perform auxiliary functions such as dump bodies for garbage trucks or landscape trucks. Methods of operating the system and manufacturing the system are also provided.

公开(公告)号：US20220178390A1

公开(公告)日：2022-06-09

申请号：US17604785

申请日：2020-03-30

申请人： NOK CORPORATION

发明人： Daiki KAMO ,  Kiichiro GOTO

IPC分类号： F15B21/00 ,  F15B1/26 ,  F15B15/22

摘要： A hydraulic actuator sealing device includes an annular piston, an annular cancel plate, a return spring, and an annular piston spring seat. The annular piston includes an annular pressure receiving plate portion receiving a load of the return spring, an inner cylinder portion extending from an inner peripheral side of the annular pressure receiving plate portion toward the annular cancel plate, and a bent portion connecting the annular pressure receiving plate portion with the inner cylinder portion and expanding with respect to the annular pressure receiving plate portion in a direction away from the return spring in an axial direction.

公开(公告)号：US11311751B2

公开(公告)日：2022-04-26

申请号：US16654278

申请日：2019-10-16

申请人： Ogura & Co., Ltd.

发明人： Keita Dobashi

IPC分类号： A62B3/00 ,  B25F5/00 ,  B25F5/02 ,  F15B21/00

摘要： A hydraulic device 10 includes a hydraulic pump 20, a tool 70, an oil passage 30, 32, 50, 52 for sending the pressure oil generated by the hydraulic pump 20 to the tool 70 and returning return oil from the tool 70 to the hydraulic pump 20, a handle 90 configured to be held by one hand of a worker, a switching part 88 disposed at the oil passage 30, 32, 50, 52 and configured to switch a path for at least one of the pressure oil and the return oil, and an operation part 80 for operating the switching part 88. The operation part 80 is disposed at a position that allows the operation part 80 to be operated with the hand of the worker holding the handle 90, or with a finger of the hand holding the handle 90.

公开(公告)号：US11193512B2

公开(公告)日：2021-12-07

申请号：US16429157

申请日：2019-06-03

申请人： Robert Bosch GmbH

发明人： Gernot Becker ,  Quang Huy Nguyen ,  Steffen Rose

IPC分类号： F15B21/00

摘要： There are disclosed a method and a lifting mechanism for actively damping in mobile working machines vibrations which may occur as a result of raised attachments during travel. The method or the lifting mechanism has a prediction or a predictor for estimating the future vibration. The prediction is preferably carried out with a recursive least squares algorithm. The mobile working machine may, for example, be a tractor.

公开(公告)号：US20210332837A1

公开(公告)日：2021-10-28

申请号：US16857188

申请日：2020-04-24

申请人： YAN-YUH CHEN ,  TZONG-YOU CHEN ,  HUEY-JEN CHEN

发明人： YAN-YUH CHEN ,  TZONG-YOU CHEN ,  HUEY-JEN CHEN

IPC分类号： F15B21/048 ,  F15B21/00

摘要： An automatic water handling device of an air compressor includes a barrel and a pneumatic cylinder. The barrel has an interior space in which a division board formed with through holes is mounted to define a first chamber in which a desiccant agent is disposed and a second chamber. The barrel has a gas outlet opening connected with a gas accumulation tank. The second chamber has a gas inlet opening to receive compressed air. An electromagnetic valve is in connection with the second chamber and is connected to a timer for activation at predetermined time points by the timer to drive the pneumatic cylinder to open a control valve to drain off water removed from compressed air.

公开(公告)号：US11118489B2

公开(公告)日：2021-09-14

申请号：US16582202

申请日：2019-09-25

申请人： RPM INDUSTRIES, LLC

发明人： John K. Apostolides

IPC分类号： F01M11/04 ,  F15B21/00 ,  F16K11/02 ,  F16K17/04 ,  F16K11/044 ,  F16N21/02 ,  F16N21/04 ,  F16N39/06 ,  F01M1/12 ,  F16N37/00 ,  F01M1/02 ,  F01M1/10 ,  F01M11/00 ,  F16N13/00 ,  F16N25/00 ,  F16N39/00

摘要： A fluid system of a machine. The fluid system includes a fluid reservoir, a pump coupled to the fluid reservoir, a filter coupled to the pump and a valve assembly. The valve assembly includes a first port, a second port coupled to the first port and to the fluid reservoir, a third port coupled to the first port, and a first check valve positioned between the first port and the second port. The fluid system further includes a second check valve positioned between the filter and the third port.

公开(公告)号：US11105106B2

公开(公告)日：2021-08-31

申请号：US16092698

申请日：2017-04-10

申请人： Schwing GmbH

发明人： Johannes Henikl ,  Reiner Vierkotten ,  Andreas Lehmann

IPC分类号： E04G21/04 ,  F15B13/044 ,  F15B15/20 ,  F15B11/16 ,  F15B13/02 ,  F15B13/04 ,  F15B20/00 ,  F15B21/00

摘要： A manipulator includes an articulated boom configured to be folded out. The articulated boom includes a turntable that can be rotated about a vertical axis, a plurality of boom segments, electrically-actuated proportional valves, and a remote control. The boom segments are pivotable via respective drive assemblies. The electrically-actuated proportional valves are respectively arranged directly on or in proximity to the respective drive assemblies to be controlled. The remote control includes at least one control lever configured to be displaced in a plurality of actuating directions. The manipulator further includes an electronic controller configured to actuate the drive assemblies via a travel command. The travel command indicates a desired movement of the boom tip. The travel command is generated in response to displacement of the control lever into at least one of the plurality of actuating directions. And, the travel command causes actuation of the respective electrically-actuated proportional valves.