知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

9 条记录 (耗时 0.015 秒)

    PILOT PUMP SOURCED PEAK SHAVING FOR HYBRID HYDRAULIC CIRCUITS
    4.
    发明申请
    PILOT PUMP SOURCED PEAK SHAVING FOR HYBRID HYDRAULIC CIRCUITS 审中-公开
    混合泵液压泵的泵浦峰值冲击

    公开(公告)号：US20140223893A1

    公开(公告)日：2014-08-14

    申请号：US13764024

    申请日：2013-02-11

    申请人： CATERPILLAR INC.

    发明人： Jeremy Todd Peterson ,  Jeffrey L. Kuehn

    IPC分类号： F15B1/02

    CPC分类号： F15B1/024 ,  B60W20/00 ,  E02F9/123 ,  E02F9/2066 ,  E02F9/207 ,  E02F9/2217 ,  E02F9/2285 ,  F15B1/033 ,  F15B21/14 ,  F15B2211/212 ,  F15B2211/4053 ,  F15B2211/625 ,  F15B2211/6316 ,  F15B2211/6355 ,  F15B2211/67 ,  F15B2211/7058 ,  Y10T137/0396 ,  Y10T137/85986

    摘要： A system includes a pilot pump with an output that may be directed to a pilot circuit by way of a selector valve. The selector valve is shifted between a first position providing communication between the pump and the pilot circuit to a second position providing communication between the pilot pump and the hybrid circuit when pressure in the pilot circuit reaches a predetermined level. That pressure is used to hydraulically shift the selector valve to redirect flow from the pilot pump to the hybrid circuit. Both the pilot circuit and the hybrid circuit include accumulators for storing pressurized hydraulic fluid. The fluid stored in the pilot circuit is used for pilot functionality while the fluid stored in the hybrid circuit is used to power any one or more of a variety of power consuming components.

    摘要翻译： 一种系统包括具有可通过选择阀引导到先导回路的输出的先导泵。 当在先导电路中的压力达到预定水平时，选择阀在提供泵和导向电路之间的通信的第一位置之间移动到提供先导泵和混合电路之间的连通的第二位置。 该压力用于液压移动选择阀以将流体从引导泵转向混合回路。 导频电路和混合电路都包括用于存储加压液压流体的蓄电池。 存储在先导电路中的流体用于先导功能，而存储在混合电路中的流体用于为各种功耗组件中的任何一个或多个供电。

    Hydraulic system having regeneration and hybrid start
    5.
    发明授权
    Hydraulic system having regeneration and hybrid start 有权

    公开(公告)号：US10344784B2

    公开(公告)日：2019-07-09

    申请号：US14708788

    申请日：2015-05-11

    申请人： Caterpillar Inc.

    发明人： Jeremy Todd Peterson ,  Jeffrey Lee Kuehn ,  Michael L. Knussman ,  Michael T. Verkuilen

    IPC分类号： F15B21/14 ,  F15B1/02 ,  F15B1/033 ,  F15B7/00 ,  E02F9/22

    摘要： A hydraulic system is disclosed. The hydraulic system may include a fluid source and an actuator having a first passage and a second passage. The hydraulic system may further include a pump having a first port connected to the first passage, a second port connected to the second passage, and a third port connected to the fluid source. The first and second passages may be connected to each other via the first and second ports, and the first passage and the low-pressure fluid source may be connected to each other via the first and third ports. They hydraulic system may further include a charge circuit fluidly connected to the first and second passages, and at least one damping control valve configured to selectively allow fluid from the pump to pass into the charge circuit to dampen pressure oscillations between the actuator and the pump.

    Hydraulic Fluid Circuit With Fixed Minimum Back Pressure
    9.
    发明申请
    Hydraulic Fluid Circuit With Fixed Minimum Back Pressure 审中-公开

    公开(公告)号：US20190309771A1

    公开(公告)日：2019-10-10

    申请号：US15944994

    申请日：2018-04-04

    申请人： Caterpillar Inc.

    发明人： Jeremy Todd Peterson ,  Jeffrey Lee Kuehn

    IPC分类号： F15B13/043 ,  F15B11/10 ,  F15B13/02

    摘要： A hydraulic circuit is disclosed. The hydraulic circuit may comprise an actuation valve configured to actuate a flow of hydraulic fluid to and from the hydraulic consumer, a first control valve in fluid communication with the actuation valve through a first pilot line and configured to displace the actuation valve to a first position when actuated, and a second control valve in fluid communication with the actuation valve through a second pilot line and configured to displace the actuation valve to a second position when actuated. The first pilot line and the second line may each have a fixed minimum back pressure sufficient to maintain dissolved air in the hydraulic fluid.