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公开(公告)号:US20170159678A1
公开(公告)日:2017-06-08
申请号:US14961244
申请日:2015-12-07
申请人: Caterpillar Inc.
CPC分类号: F15B11/17 , E02F3/34 , E02F9/2217 , E02F9/2228 , E02F9/2242 , E02F9/2253 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F15B1/024 , F15B2211/20523 , F15B2211/20546 , F15B2211/20569 , F15B2211/20576 , F15B2211/212 , F15B2211/27 , F15B2211/30525 , F15B2211/3053 , F15B2211/3111 , F15B2211/3144 , F15B2211/31523 , F15B2211/351 , F15B2211/455 , F15B2211/613 , F15B2211/6346 , F15B2211/665 , F15B2211/7135 , F15B2211/851 , F15B2211/88 , F16H61/4078
摘要: A hydraulic system is disclosed for use with a machine. The hydraulic system may have a closed-loop, meterless hydraulic circuit with a first pump fluidly connected to a first actuator. The hydraulic system may also have a closed-loop, metered hydraulic circuit with a second pump fluidly connected to a second actuator. The hydraulic system may further have a combiner valve configured to selectively direct fluid from the closed-loop metered hydraulic circuit to the closed-loop meterless hydraulic circuit.
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公开(公告)号:US20160333903A1
公开(公告)日:2016-11-17
申请号:US14708788
申请日:2015-05-11
申请人: Caterpillar Inc.
CPC分类号: F15B21/14 , E02F9/2207 , E02F9/2217 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F15B1/024 , F15B1/033 , F15B7/006 , F15B2211/20523 , F15B2211/20546 , F15B2211/20561 , F15B2211/20569 , F15B2211/20576 , F15B2211/27 , F15B2211/30515 , F15B2211/613 , F15B2211/625 , F15B2211/6346 , F15B2211/6652 , F15B2211/785 , F15B2211/851 , F15B2211/8613
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.
摘要翻译: 公开了一种液压系统。 液压系统可以包括流体源和具有第一通道和第二通道的致动器。 液压系统还可以包括具有连接到第一通道的第一端口,连接到第二通道的第二端口和连接到流体源的第三端口的泵。 第一和第二通道可以经由第一和第二端口彼此连接,并且第一通道和低压流体源可以经由第一和第三端口彼此连接。 它们的液压系统还可以包括流体地连接到第一和第二通道的充电回路,以及至少一个阻尼控制阀,其构造成选择性地允许来自泵的流体进入充电回路以抑制致动器和泵之间的压力振荡。
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