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1. 发明申请

WO2011150010A3 HYDRAULIC SYSTEM HAVING IMPLEMENT AND STEERING FLOW SHARING 审中-公开
标题翻译：具有执行和转向流动共享的液压系统
公开(公告)号：WO2011150010A3
公开(公告)日：2012-03-15
申请号：PCT/US2011037839
申请日：2011-05-25
申请人： CATERPILLAR INC , JOHNSON BRYAN A , BRINKMAN JASON L , TOGNETTI LAWRENCE J , CESUR RUSTU , SPRING PETER , ZHANG JIAO
发明人： JOHNSON BRYAN A , BRINKMAN JASON L , TOGNETTI LAWRENCE J , CESUR RUSTU , SPRING PETER , ZHANG JIAO
IPC分类号： F15B13/02 , E02F9/22 , F15B13/06
CPC分类号： E02F9/2242 , B62D5/075 , E02F3/34 , E02F9/2296 , F15B11/162 , F15B11/17 , F15B2211/20546 , F15B2211/20576 , F15B2211/4053 , F15B2211/50554 , F15B2211/781
摘要： A hydraulic system (34) for a machine (10) is disclosed. The hydraulic system may have a first pump (40) with variable displacement and being load- sense controlled, and a first hydraulic circuit (36) associated with the first pump. The hydraulic system may also have a second pump (58) with variable displacement and being electro-hydraulically controlled, and a second hydraulic circuit (38) associated with the second pump. The hydraulic system may further have a flow-sharing valve (83) arrangement configured to selectively share fluid flow between the first and second hydraulic circuits.
摘要翻译：公开了一种用于机器（10）的液压系统（34）。液压系统可以具有可变排量并被负载感测控制的第一泵（40）和与第一泵相关联的第一液压回路（36）。液压系统还可以具有可变位移和电液压控制的第二泵（58）和与第二泵相关联的第二液压回路（38）。液压系统还可以具有配置成选择性地共享第一和第二液压回路之间的流体流动的分流阀（83）装置。

2. 发明申请

WO2012154464A2 PRESSURE LIMITING IN HYDRAULIC SYSTEMS 审中-公开
标题翻译：液压系统压力限制
公开(公告)号：WO2012154464A2
公开(公告)日：2012-11-15
申请号：PCT/US2012036090
申请日：2012-05-02
申请人： CATERPILLAR INC , HARLOW RANDALL A , HAND TIMOTHY L , BRINKMAN JASON L , BACON KEVIN A
发明人： HARLOW RANDALL A , HAND TIMOTHY L , BRINKMAN JASON L , BACON KEVIN A
IPC分类号： F15B13/044 , F15B13/02
CPC分类号： F15B11/168 , F15B2211/30555 , F15B2211/6058 , F15B2211/653 , F15B2211/654
摘要： This disclosure provides for pressure limiting a hydraulic system (100, 200) to a desired pressure value by a particular circuit by controlling and closing the compensator when the desired pressure setting is achieved. Closing the compensator will reduced the pressure head and flow in the circuit resulting in improved efficiency. One illustrated embodiment of the disclosure provides a relief valve (30) in the pilot signal for a compensator. The method relates to limiting the pressure on an open side (202a) of the compensator, such that the pressure on the other side closes the compensator thereby limiting the pressure and also flow in the hydraulic circuit. In other words, the pressure on the open side (202a) is limited by the relief valve (30). Thus, the pressure on the other side increases thereby regulating the flow and pressure through the compensator. In another embodiment of the disclosure, instead of reducing the pressure on the open side (202a), the pressure on the closed side (202b) is increased, thereby controlling the flow and pressure of the hydraulic circuit. The pressure can be increased by a pump (12) or any other suitable mode.
摘要翻译：本公开提供了当实现期望的压力设定时，通过控制和关闭补偿器，通过特定的电路将液压系统（100,200）限制到期望的压力值。关闭补偿器将减少电路中的压头和流量，从而提高效率。本公开的一个示出的实施例提供了用于补偿器的导频信号中的安全阀（30）。该方法涉及限制补偿器的开放侧（202a）上的压力，使得另一侧的压力关闭补偿器，从而限制压力并且还在液压回路中流动。换句话说，开放侧（202a）的压力受到安全阀（30）的限制。因此，另一侧的压力增加，从而调节通过补偿器的流量和压力。在本公开的另一个实施例中，代替减小开口侧（202a）上的压力，封闭侧（202b）上的压力增加，从而控制液压回路的流量和压力。压力可以通过泵（12）或任何其他合适的模式来增加。

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