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1. 发明申请

US20160152261A1 HYDRAULIC SYSTEM WITH MARGIN BASED FLOW SUPPLEMENTATION 审中-公开
标题翻译：具有基于流量补偿的液压系统
公开(公告)号：US20160152261A1
公开(公告)日：2016-06-02
申请号：US15016277
申请日：2016-02-05
申请人： Caterpillar Inc.
发明人： Beau D. Kuipers , Sudheer Holenarasipura , Patrick W. Sullivan, JR.
IPC分类号： B62D5/14
CPC分类号： B62D5/06 , B62D5/065 , B62D5/07 , E02F9/0841 , E02F9/225 , E02F9/2292 , E02F9/2296
摘要： A hydraulic system with margin based flow supplementation is provided. The hydraulic system includes a steering pump, an implement pump and a flow sharing device. The steering pump is associated with a steering circuit. The implement pump is associated with an implement circuit. The flow sharing device is disposed between the steering circuit and the implement circuit and is configured to operate in one of a first mode and a second mode. Further, the flow sharing device allows hydraulic fluid to flow from the implement circuit to the steering circuit in the first mode, when a margin pressure of the steering circuit is below a threshold value, and the flow sharing device stops the hydraulic fluid to flow from the implement circuit to the steering circuit in the second mode, when the margin pressure of the steering circuit is equal to or above the threshold value.
摘要翻译：提供了一种具有基于边缘的流量补充的液压系统。液压系统包括转向泵，工具泵和分流装置。转向泵与转向回路相关联。工具泵与工具电路相关联。流量共享装置设置在转向电路和实施电路之间，并且被配置为在第一模式和第二模式之一中操作。此外，当转向回路的余量压力低于阈值时，流量共享装置允许液压流体在第一模式中从工具回路流向转向回路，并且流量共享装置停止液压流体从当转向电路的余量压力等于或高于阈值时，在第二模式中转向电路的实现电路。

2. 发明授权

US10174770B2 System and method of hydraulic energy recovery for machine start-stop and machine ride control 有权
公开(公告)号：US10174770B2
公开(公告)日：2019-01-08
申请号：US14936172
申请日：2015-11-09
申请人： Caterpillar Inc.
发明人： Jiao Zhang , Dayao Chen , Sudheer Holenarasipura
IPC分类号： F16D31/02 , F15B1/02 , F15B1/027 , F15B1/04 , F15B1/26 , F15B11/024 , F15B11/16 , F15B13/02 , F15B13/16 , F15B15/18 , F15B21/14 , E02F9/22
摘要： A hydraulic control system for a machine is provided. The hydraulic control system includes a fluid reservoir and a pump motor. The pump motor is fluidly coupled to the fluid reservoir. The pump motor is configured to provide pressurized fluid and to receive fluid to provide a power output to the shaft. The hydraulic control system further includes an actuator and an accumulator fluidly coupled to the pump motor and the actuator. The hydraulic control system further includes an accumulator valve and a controller. The accumulator valve is fluidly coupled between the accumulator and the pump motor. The controller is in communication with the pump motor and the accumulator valve. The controller is configured to detect an operator command to operate the power source; determine pressure at the accumulator; and selectively move the accumulator valve to fluidly connect the accumulator with the pump motor.

3. 发明申请

US20170130739A1 SYSTEM AND METHOD OF HYDRAULIC ENERGY RECOVERY FOR MACHINE START-STOP AND MACHINE RIDE CONTROL 审中-公开
公开(公告)号：US20170130739A1
公开(公告)日：2017-05-11
申请号：US14936172
申请日：2015-11-09
申请人： Caterpillar Inc.
发明人： Jiao Zhang , Dayao Chen , Sudheer Holenarasipura
IPC分类号： F15B1/02 , F15B1/04 , F15B1/027 , F15B11/16 , F15B13/16 , F15B13/02 , F15B15/18 , F15B11/024 , F15B21/14 , F15B1/26
CPC分类号： F15B1/024 , E02F9/2207 , E02F9/2217 , E02F9/2246 , E02F9/2296 , F15B1/021 , F15B1/027 , F15B1/04 , F15B1/26 , F15B11/024 , F15B11/16 , F15B13/021 , F15B13/16 , F15B15/18 , F15B21/14 , F15B2211/20507 , F15B2211/20546 , F15B2211/20569 , F15B2211/212 , F15B2211/3058 , F15B2211/6306 , F15B2211/6309 , F15B2211/6313 , F15B2211/633 , F15B2211/6333 , F15B2211/6346 , F15B2211/6658 , F15B2211/7053 , F15B2211/7128
摘要： A hydraulic control system for a machine is provided. The hydraulic control system includes a fluid reservoir and a pump motor. The pump motor is fluidly coupled to the fluid reservoir. The pump motor is configured to provide pressurized fluid and to receive fluid to provide a power output to the shaft. The hydraulic control system further includes an actuator and an accumulator fluidly coupled to the pump motor and the actuator. The hydraulic control system further includes an accumulator valve and a controller. The accumulator valve is fluidly coupled between the accumulator and the pump motor. The controller is in communication with the pump motor and the accumulator valve. The controller is configured to detect an operator command to operate the power source; determine pressure at the accumulator; and selectively move the accumulator valve to fluidly connect the accumulator with the pump motor.

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