公开(公告)号：US12060878B2

公开(公告)日：2024-08-13

申请号：US17358410

申请日：2021-06-25

申请人： Project Phoenix, LLC

发明人： Thomas Afshari

IPC分类号： F04B49/22 ,  F04C2/08 ,  F04C2/18 ,  F04C11/00 ,  F04C14/08 ,  F04C15/00 ,  F15B7/00 ,  F15B15/08 ,  F15B15/18 ,  F15B15/20 ,  F16H39/02 ,  F16H39/06 ,  F16H61/4008 ,  F16H61/4035

CPC分类号： F04B49/22 ,  F04C2/084 ,  F04C2/18 ,  F04C11/00 ,  F04C11/003 ,  F04C11/008 ,  F04C14/08 ,  F04C15/00 ,  F04C15/0092 ,  F04C15/0096 ,  F15B7/006 ,  F15B15/08 ,  F15B15/18 ,  F15B15/202 ,  F16H39/02 ,  F16H39/06 ,  F16H61/4008 ,  F16H61/4035 ,  F04C2270/035 ,  F04C2270/051 ,  F15B2211/40515

摘要： A hydraulic system includes a hydraulic gear pump with a first gear having a plurality of first gear teeth and a second gear having a plurality of second gear teeth. The hydraulic system also includes a control valve and a control circuit. The control circuit controls the pump to adjust at least one of a flow in the hydraulic system to a flow set point or a pressure in the hydraulic system to a pressure set point, and concurrently establishes an opening of the control valve to adjust at least one of the flow to the flow set point or the pressure to the pressure set point. The control circuit establishes a position of a first tooth relative to a position of a second tooth to seal a fluid path from the outlet of the hydraulic gear pump to the inlet of the hydraulic gear pump.

公开(公告)号：US11719335B2

公开(公告)日：2023-08-08

申请号：US17432350

申请日：2020-04-02

申请人： KOMATSU LTD.

发明人： Akira Nakashima ,  Shinobu Kamikawa

IPC分类号： F16H61/4078 ,  F15B21/00 ,  F15B11/08 ,  F15B13/042 ,  F16H61/4139 ,  F16H61/4008 ,  F15B21/0423 ,  E02F9/22 ,  F15B11/16

CPC分类号： F16H61/4078 ,  E02F9/22 ,  F15B11/08 ,  F15B11/167 ,  F15B13/042 ,  F15B21/005 ,  F15B21/0423 ,  F16H61/4008 ,  F16H61/4139 ,  F15B2211/20546 ,  F15B2211/20576 ,  F15B2211/329 ,  F15B2211/355 ,  F15B2211/36 ,  F15B2211/613 ,  F15B2211/615 ,  F15B2211/62 ,  F15B2211/633 ,  F15B2211/6303 ,  F15B2211/6313 ,  F15B2211/6346 ,  F15B2211/67 ,  F15B2211/7058

摘要： An HST circuit has a hydraulic pump that converts a drive force of an engine into energy of oil, and a hydraulic motor that converts the energy of the oil converted by the hydraulic pump into drive energy. Pressure sensors detect a pressure of the oil within the HST circuit. A variable charge pump replenishes the oil into the HST circuit. A controller controls a capacity of the variable charge pump based on the pressure of the oil within the HST circuit detected by the pressure sensors.

公开(公告)号：US09995387B2

公开(公告)日：2018-06-12

申请号：US14928336

申请日：2015-10-30

申请人： Linde Hydraulics GmbH & Co. KG

发明人： Markus Wiertellok ,  Wolfgang Kraft

IPC分类号： F16H61/4148 ,  F16H61/47 ,  F16H61/4008 ,  F16H61/421 ,  F16H61/46 ,  F16H61/4035 ,  F16H61/425 ,  F16H61/456 ,  B62D11/00 ,  B62D11/06

CPC分类号： F16H61/47 ,  B62D11/003 ,  B62D11/005 ,  B62D11/06 ,  F16H61/4008 ,  F16H61/4035 ,  F16H61/4148 ,  F16H61/421 ,  F16H61/425 ,  F16H61/456 ,  F16H61/46

摘要： A hydrostatic traction drive system of a mobile machine has a first hydraulic traction motor associated with a first vehicle side and a second hydraulic traction motor associated with a second vehicle side. The hydraulic traction motors are operated in an open circuit and are jointly supplied with hydraulic fluid by a single hydraulic pump. The first hydraulic traction motor is controlled by a first control valve and the second hydraulic traction motor is controlled by a second control valve. The first hydraulic traction motor and the second hydraulic traction motor are each variable displacement motors with an electrically variable displacement volume, and the first control valve and the second control valve are electrically actuatable control valves.

公开(公告)号：US20180030692A1

公开(公告)日：2018-02-01

申请号：US15506799

申请日：2016-07-29

申请人： Komatsu Ltd.

发明人： Yuta Kamoshita ,  Tadashi Kawaguchi ,  Teruo Akiyama

IPC分类号： E02F9/22 ,  F16H61/47 ,  F16H61/4008 ,  F15B11/16

CPC分类号： E02F9/2228 ,  E02F9/2242 ,  E02F9/2253 ,  E02F9/2296 ,  F15B11/163 ,  F15B11/17 ,  F15B19/007 ,  F15B2211/20546 ,  F15B2211/20576 ,  F15B2211/3054 ,  F15B2211/30595 ,  F15B2211/6309 ,  F15B2211/6313 ,  F15B2211/6333 ,  F15B2211/6652 ,  F15B2211/6654 ,  F16H61/4008 ,  F16H61/47

摘要： A control system includes a cylinder pressure data acquisition unit that acquires cylinder pressure data indicating a pressure of operating oil of a hydraulic cylinder; an operation amount data acquisition unit that acquires operation amount data of an operating device; a pump flow rate calculation unit that calculates a first pump flow rate indicating a flow rate of the operating oil discharged from a first hydraulic pump and a second pump flow rate indicating a flow rate of the operating oil discharged from a second hydraulic pump in a splitting state in which a passage is closed based on the cylinder pressure data and the operation amount data; and a pump control unit that controls the first hydraulic pump and the second hydraulic pump based on the first pump flow rate and the second pump flow rate.

公开(公告)号：US09856975B2

公开(公告)日：2018-01-02

申请号：US13580386

申请日：2011-02-16

申请人： Thilo Schmidt ,  Manuel Straub

发明人： Thilo Schmidt ,  Manuel Straub

IPC分类号： F16H61/02 ,  F16H61/12 ,  F16H61/28 ,  F16H61/30 ,  F16H61/4008 ,  F16H61/4069

CPC分类号： F16H61/12 ,  B60Y2400/421 ,  F16H61/0206 ,  F16H61/2807 ,  F16H61/30 ,  F16H61/4008 ,  F16H61/4069 ,  F16H2061/1232 ,  F16H2200/2094 ,  Y10T74/20024

摘要： A hydraulic system for actuating an interlocking shifting element of a transmission which comprises two piston chambers and a piston element that delimits the piston chambers. The piston element can be acted upon in one piston chamber by a pressure to open the shifting element and, in the other piston chamber, by another pressure to close the shifting element. Pressure can be delivered by a valve to two piston chamber and the valve can be actuated by an actuator by a pilot pressure. The valve and the electro-hydraulic actuator are designed and functionally connected to one another such that, in the event of a pressure drop, a total hydraulic force, acting to close the shifting element, is applied to the piston element and, if the current supply to the actuator fails, a total hydraulic force acting, in the opening direction of the shifting element, acts upon the piston element.

公开(公告)号：US09783051B2

公开(公告)日：2017-10-10

申请号：US14785293

申请日：2014-04-16

申请人： FLUID-SYSTEM ,  CNH INDUSTRIAL FRANCE

发明人： Frédéric Lagors

IPC分类号： F16H61/40 ,  B60K17/356 ,  B60K17/10 ,  F16H61/4008 ,  F16H61/4035 ,  F16H61/448 ,  F16H59/66

CPC分类号： B60K17/356 ,  B60K17/10 ,  B60W2550/142 ,  F16H59/66 ,  F16H61/4008 ,  F16H61/4035 ,  F16H61/448 ,  F16H2059/663

摘要： A hydrostatic transmission device of a mobile machine having —at least one first motor and at least one second motor, —at least one first dual motor and at least one second dual motor each having first and second elementary motor, —the second elementary motor of the first dual motor is linked with the first motor by a serial duct, —the second elementary motor of the second dual motor is linked with the second motor by a serial duct, —each serial duct has a valve having an opening for passage of the fluid into the serial duct, said valve having a first position in which said opening has a maximum cross-section, and a second position in which said opening has a reduced cross-section, the movement of said valve between these two positions activated a control instruction generated when the machine is travelling on a slope.

公开(公告)号：US20110196585A1

公开(公告)日：2011-08-11

申请号：US13124976

申请日：2009-09-28

申请人： Eiji Ishibashi ,  Masayuki Mukaino ,  Shigeru Yamamoto ,  Yoshitaka Onodera ,  Takao Ishihara

发明人： Eiji Ishibashi ,  Masayuki Mukaino ,  Shigeru Yamamoto ,  Yoshitaka Onodera ,  Takao Ishihara

IPC分类号： F16H61/4008 ,  B62D11/02

CPC分类号： F16H61/4008 ,  B60W10/06 ,  B60W10/11 ,  E02F9/202 ,  E02F9/2253 ,  F04B27/08 ,  F04B49/24 ,  F16H59/06 ,  F16H59/44 ,  F16H59/46 ,  F16H61/0213 ,  F16H61/061 ,  F16H61/40 ,  F16H61/421 ,  F16H61/431 ,  F16H61/47 ,  F16H2059/366 ,  F16H2059/6861 ,  F17D1/08 ,  Y10T477/679 ,  Y10T477/68

摘要： A control device controls a hydrostatic transmission vehicle having a hydrostatic transmission including a variable displacement pump and a variable displacement hydraulic motor. The control device is configured to set a set vehicle speed based on a forward/rearward travel command and a gear stage command instructed by an operator, to set a torque limit usable for the hydrostatic transmission based on an engine speed, to set a vehicle speed limit based on a pressure in the hydraulic circuit and the torque limit, to select a lower one of the set vehicle speed and the vehicle speed limit, and to control respective displacements of the variable displacement pump and the variable displacement hydraulic motor based on the selected vehicle speed.

摘要翻译： 控制装置控制具有包括可变排量泵和可变排量液压马达的静液压传动装置的液压传动车辆。 控制装置被配置为基于前进/后退行驶指令和操作者指示的档位指令来设定设定的车速，以基于发动机转速设定可用于静液压变速器的转矩限制，以设定车速 基于液压回路中的压力和转矩极限的极限，选择设定车速和车速极限中的较低的一个，并且基于所选择的控制来控制可变排量泵和可变排量液压马达的各个位移 车速。

公开(公告)号：US20100083652A1

公开(公告)日：2010-04-08

申请号：US12531584

申请日：2008-03-27

申请人： Yuji Fukuda ,  Naritoshi Ohtsukasa

发明人： Yuji Fukuda ,  Naritoshi Ohtsukasa

IPC分类号： F16D39/00

CPC分类号： F16H61/421 ,  F16H35/10 ,  F16H61/4008 ,  F16H61/423 ,  F16H61/431 ,  F16H61/433 ,  F16H61/468 ,  F16H2059/186 ,  F16H2059/6861 ,  F16H2061/0232

摘要： [PROBLEMS] By accurately determining timing for suppressing overrun in a hydraulic motor or the like, work efficiency is prevented from falling. [MEANS FOR SOLVING PROBLEMS] A pressure difference ΔP between pressure Pa on a discharge port 1a side of a hydraulic pump 1 and pressure Pb on a suction port 1b side of the hydraulic pump 1 is calculated on the basis of the detected travel direction of the vehicle and the pressures Pa, Pb detected at the respective port 1a, 1b sides of the hydraulic pump 1. At least one of an engine 4 and the hydraulic pump 1 is controlled, according to the calculated pressure difference, such that overrun of at least one of the engine 4, the hydraulic pump 1, and a hydraulic motor 2 is suppressed.

摘要翻译： [问题]通过精确地确定液压马达等中的超限制的定时，防止工作效率下降。 解决问题的手段在液压泵1的排出口1a侧的压力Pa与液压泵1的吸入口1b侧的压力Pb之间的压力差Dgr·P，基于检测出的行驶方向 在液压泵1的各个端口1a，1b侧检测到的压力Pa，Pb。根据计算出的压力差，控制发动机4和液压泵1中的至少一个，使得超过 发动机4，液压泵1和液压马达2中的至少一个被抑制。

公开(公告)号：US3161022A

公开(公告)日：1964-12-15

申请号：US13853260

申请日：1960-12-24

申请人： HYDRAULIK AS

发明人： HARRY SANDOY

IPC分类号： B66D1/08 ,  B66D1/48 ,  F16H61/40 ,  F16H61/4008

CPC分类号： F16H61/4008 ,  B66D1/08 ,  B66D1/48 ,  B66D2700/0108 ,  B66D2700/0133 ,  F16H61/40

公开(公告)号：US2413301A

公开(公告)日：1946-12-31

申请号：US5907236

申请日：1936-01-14

申请人： VICKERS INC

发明人： ELLIS ARTHUR L

IPC分类号： F16H61/40 ,  F16H61/4008 ,  F16H61/46 ,  F16H61/472

CPC分类号： F16H61/472 ,  F16H61/4008 ,  F16H61/461 ,  Y10T74/19274