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1. 发明申请

US20220259828A1 Electro-Hydraulic Drive System for a Machine 有权
公开(公告)号：US20220259828A1
公开(公告)日：2022-08-18
申请号：US17617042
申请日：2020-06-04
申请人： Parker-Hannifin Corporation
发明人： Hao Zhang , Blake Carl , Dale Vanderlaan , Germano Franzoni
IPC分类号： E02F9/22
摘要： An example hydraulic system includes a hydraulic cylinder actuator comprising a cylinder and a piston, wherein the piston comprises a piston head and a rod extending from the piston head, wherein the piston head divides an internal space of the cylinder into a first chamber and a second chamber, and wherein the hydraulic cylinder actuator is unbalanced; a first pump driven by a first electric motor to provide fluid flow to the first chamber or the second chamber of the hydraulic cylinder actuator to drive the piston; a boost flow line; a hydraulic motor actuator; and a second pump driven by a second electric motor, wherein the second pump is fluidly coupled to the boost flow line to provide boost fluid flow to the hydraulic cylinder actuator.

2. 发明授权

US11225776B2 Boom potential energy recovery of hydraulic excavator 有权
公开(公告)号：US11225776B2
公开(公告)日：2022-01-18
申请号：US17160940
申请日：2021-01-28
申请人： Parker-Hannifin Corporation
发明人： Nicholas N. White , James Howland , Hao Zhang , Blake Carl
IPC分类号： E02F9/22 , E02F9/12 , F15B1/02 , F15B13/02 , F15B13/06 , F15B21/14
摘要： A hydraulic system for recovering potential energy of a load implement of a mobile construction vehicle. The hydraulic system includes first and second actuators and control valving. The first and second actuators are configured to be coupled to the load implement for controlling raising and lowering of the load element. The control valving is operable between a first position at which, during a lowering of the load implement, the control valving directs hydraulic fluid from one of the first and second actuators to an accumulator to charge the accumulator, and a second position at which the control valving directs hydraulic fluid from the accumulator to one or more of the first and second actuators to power the one or more of the first and second actuators to raise the load element.

3. 发明授权

US10160439B2 Power efficiency control mechanism for a working machine 有权
公开(公告)号：US10160439B2
公开(公告)日：2018-12-25
申请号：US15319959
申请日：2015-06-18
申请人： Parker-Hannifin Corporation
发明人： Hao Zhang , Raymond Collett , Zhesheng Jiang , Blake Carl
IPC分类号： B60W20/11 , B60K6/387 , B60K6/48 , B60W10/02 , B60W10/06 , B60W10/08 , B60W10/26
摘要： A control system for a working machine that includes a power consumer (14) includes a prime mover (12), an energy storage unit (24) for storing energy, an auxiliary power unit (20) for generating power or consuming power, the auxiliary power unit (20) having a first connection (20a) coupled to the prime mover (12) and a second connection couplable to the energy storage unit (24). A controller (18) operatively coupled to the prime mover (12) and operatively couplable to the power consumer (14) is configured to estimate a required power of the power consumer (14), and to command the prime mover (14) to operate at an optimal operating point that produces the estimated required power. Based on a relationship between power output capability of the prime mover and power consumption of the power consumer, the controller (18) is configured to at least one of command that excess power capacity from the prime mover be provided to the auxiliary power unit for storage in the energy storage unit, or command that energy stored in the energy storage unit be provided to the auxiliary power unit to drive the power consumer.

4. 发明申请

US20160053879A1 PUMP CONTROL METHOD AND SYSTEM 审中-公开
标题翻译：泵控制方法与系统
公开(公告)号：US20160053879A1
公开(公告)日：2016-02-25
申请号：US14781343
申请日：2014-03-26
申请人： PARKER-HANNIFIN CORPORATION
发明人： Blake Carl
IPC分类号： F16H47/04 , B60K6/12 , F16H61/02 , F04B19/22 , F04B49/12
CPC分类号： F16H47/04 , B60K6/12 , F04B19/22 , F04B49/12 , F04B49/121 , F16H61/421 , F16H61/444 , F16H2047/045
摘要： A hydraulic hybrid vehicle 10 includes a powersplit transmission 11, a prime mover 13, a primary hydraulic pump motor unit 42, a secondary pump motor unit 43, a high pressure hydraulic accumulator 46, a planetary gear set 71, and drive wheels 15. Under certain conditions when vehicle 10 is operated at relatively higher cruising speeds, the secondary unit 43 may be hydraulically disabled by valve 55 and/or mechanically disabled by clutch 101 and/or connected to the drive wheels 15 through high gear ratio connection 101a, 101b, 79a. Also under these conditions, primary unit 42 may be oscillated or repeatedly cycled through a power additive mode in which primary unit 42 rotates in one direction to charge accumulator 46 and a power regeneration mode in which primary unit 42 rotates in the opposite direction and receives hydraulic fluid from accumulator 46.
摘要翻译：液压混合动力车辆10包括动力分配变速器11，原动机13，主液压泵马达单元42，副泵马达单元43，高压液压蓄能器46，行星齿轮组71和驱动轮15。当车辆10以相对较高的巡航速度操作时的某些条件，次级单元43可以由阀55液压地禁用和/或由离合器101机械地禁用和/或通过高速齿轮比连接101a，101b连接到驱动轮15， 79a。同样在这些条件下，主单元42可以通过主单元42沿一个方向旋转以对蓄能器46充电的功率添加模式振荡或重复循环，并且主单元42沿相反方向旋转并接收液压的功率再生模式来自蓄能器46的流体。

5. 发明授权

US11788256B2 Dual architecture for an electro-hydraulic drive system 有权
公开(公告)号：US11788256B2
公开(公告)日：2023-10-17
申请号：US17628262
申请日：2020-06-09
申请人： Parker-Hannifin Corporation
发明人： Dale Vanderlaan , Blake Carl , Hao Zhang
IPC分类号： E02F9/22 , F15B11/17 , F15B13/08 , F15B15/18
CPC分类号： E02F9/2292 , E02F9/2242 , E02F9/2289 , F15B11/17 , F15B13/0885 , F15B15/18 , F15B2211/20515 , F15B2211/20576
摘要： An example hydraulic system includes a hydraulic actuator; a pump driven by an electric motor and having an inlet port and an outlet port; a boost flow line configured to provide boost fluid flow or receive excess fluid flow; a reservoir fluid line fluidly coupled to a reservoir; and a valve assembly configured to operate in a plurality of states to allow the pump to operate in a closed-circuit configuration in which fluid discharged from the hydraulic actuator is provided to the inlet port of the pump or an open-circuit configuration in which fluid discharged from the hydraulic actuator is provided to the reservoir.

6. 发明授权

US10815646B2 Boom potential energy recovery of hydraulic excavator 有权
公开(公告)号：US10815646B2
公开(公告)日：2020-10-27
申请号：US16436954
申请日：2019-06-11
申请人： Parker-Hannifin Corporation
发明人： Nicholas N. White , James Howland , Hao Zhang , Blake Carl
IPC分类号： F15B1/02 , E02F9/22 , E02F9/12 , F15B13/02 , F15B13/06 , F15B21/14
摘要： A hydraulic system for recovering potential energy of a load implement of a mobile construction vehicle. The hydraulic system includes first and second actuators and control valving. The first and second actuators are configured to be coupled to the load implement for controlling raising and lowering of the load element. The control valving is operable between a first position at which, during a lowering of the load implement, the control valving directs hydraulic fluid from one of the first and second actuators to an accumulator to charge the accumulator, and a second position at which the control valving directs hydraulic fluid from the accumulator to one or more of the first and second actuators to power the one or more of the first and second actuators to raise the load element.

7. 发明授权

US10358797B2 Boom potential energy recovery of hydraulic excavator 有权
公开(公告)号：US10358797B2
公开(公告)日：2019-07-23
申请号：US15747266
申请日：2016-08-15
申请人： Parker-Hannifin Corporation
发明人： Nicholas N. White , James Howland , Hao Zhang , Blake Carl
IPC分类号： E02F9/22 , E02F9/12 , F15B1/02 , F15B13/02 , F15B13/06 , F15B21/14
摘要： A hydraulic system for recovering potential energy of a load implement of a mobile construction vehicle. The hydraulic system includes first and second actuators and control valving. The first and second actuators are configured to be coupled to the load implement for controlling raising and lowering of the load element. The control valving is operable between a first position at which, during a lowering of the load implement, the control valving directs hydraulic fluid from one of the first and second actuators to an accumulator to charge the accumulator, and a second position at which the control valving directs hydraulic fluid from the accumulator to one or more of the first and second actuators to power the one or more of the first and second actuators to raise the load element.

8. 发明授权

US11781289B2 Electro-hydraulic drive system for a machine 有权
公开(公告)号：US11781289B2
公开(公告)日：2023-10-10
申请号：US17617042
申请日：2020-06-04
申请人： Parker-Hannifin Corporation
发明人： Hao Zhang , Blake Carl , Dale Vanderlaan , Germano Franzoni
IPC分类号： E02F9/22
CPC分类号： E02F9/2292 , E02F9/2285 , E02F9/2228 , E02F9/2267 , E02F9/2289
摘要： An example hydraulic system includes a hydraulic cylinder actuator comprising a cylinder and a piston, wherein the piston comprises a piston head and a rod extending from the piston head, wherein the piston head divides an internal space of the cylinder into a first chamber and a second chamber, and wherein the hydraulic cylinder actuator is unbalanced; a first pump driven by a first electric motor to provide fluid flow to the first chamber or the second chamber of the hydraulic cylinder actuator to drive the piston; a boost flow line; a hydraulic motor actuator; and a second pump driven by a second electric motor, wherein the second pump is fluidly coupled to the boost flow line to provide boost fluid flow to the hydraulic cylinder actuator.

9. 发明申请

US20220282458A1 Dual Architecture for an Electro-Hydraulic Drive System 有权
公开(公告)号：US20220282458A1
公开(公告)日：2022-09-08
申请号：US17628262
申请日：2020-06-09
申请人： Parker-Hannifin Corporation
发明人： Dale Vanderlaan , Blake Carl , Hao Zhang
IPC分类号： E02F9/22 , F15B11/17 , F15B15/18 , F15B13/08
摘要： An example hydraulic system includes a hydraulic actuator; a pump driven by an electric motor and having an inlet port and an outlet port; a boost flow line configured to provide boost fluid flow or receive excess fluid flow; a reservoir fluid line fluidly coupled to a reservoir; and a valve assembly configured to operate in a plurality of states to allow the pump to operate in a closed-circuit configuration in which fluid discharged from the hydraulic actuator is provided to the inlet port of the pump or an open-circuit configuration in which fluid discharged from the hydraulic actuator is provided to the reservoir.

10. 发明授权

US10941542B2 Boom potential energy recovery of hydraulic excavator 有权
公开(公告)号：US10941542B2
公开(公告)日：2021-03-09
申请号：US17027834
申请日：2020-09-22
申请人： Parker-Hannifin Corporation
发明人： Nicholas N. White , James Howland , Hao Zhang , Blake Carl
IPC分类号： E02F9/22 , E02F9/12 , F15B1/02 , F15B13/06 , F15B21/14 , F15B13/02
摘要： A hydraulic system for recovering potential energy of a load implement of a mobile construction vehicle. The hydraulic system includes first and second actuators and control valving. The first and second actuators are configured to be coupled to the load implement for controlling raising and lowering of the load element. The control valving is operable between a first position at which, during a lowering of the load implement, the control valving directs hydraulic fluid from one of the first and second actuators to an accumulator to charge the accumulator, and a second position at which the control valving directs hydraulic fluid from the accumulator to one or more of the first and second actuators to power the one or more of the first and second actuators to raise the load element.

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