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1. 发明申请

WO2007027306A1 INDEPENDENT METERING VALVE CONTROL SYSTEM AND METHOD 审中-公开
标题翻译：独立的计量阀控制系统和方法
公开(公告)号：WO2007027306A1
公开(公告)日：2007-03-08
申请号：PCT/US2006/027708
申请日：2006-07-18
申请人： CATERPILLAR INC. , SHIN CATERPILLAR MITSUBISHI LTD. , EGELJA, Aleksandar , MA, Pengfei , VERKUILEN, Michael, T. , ZHANG, Jiao
发明人： EGELJA, Aleksandar , MA, Pengfei , VERKUILEN, Michael, T. , ZHANG, Jiao
IPC分类号： F15B11/042 , F15B11/044 , F15B11/028 , F15B21/08
CPC分类号： F15B21/082 , F15B11/006 , F15B11/028 , F15B11/042 , F15B11/044 , F15B2211/30575 , F15B2211/327 , F15B2211/351 , F15B2211/353 , F15B2211/6313 , F15B2211/6653 , F15B2211/6654 , F15B2211/6658
摘要： A hydraulic control system (24) for a work machine (10) is disclosed. The hydraulic control system has a fluid actuator (30c) with first and second chambers (56, 58), first and second metering valves (32, 28) having valve elements movable to fill and drain the first and second chambers respectively, and at least one fluid sensor (40) configured to generate a load signal indicative of a load on the fluid actuator. The hydraulic control system also has an operator interface device (22) movable to generate a desired velocity signal of the fluid actuator. The hydraulic control system further has a controller (48) in communication with the first and second metering valves, the at least one fluid sensor, and the operator interface device. The controller is configured to move the valve element of the first metering valve to a position based on the desired velocity signal and to move the valve element of the second metering valve to a position based on the load signal and a desired pressure within the second chamber.
摘要翻译：公开了一种用于工作机械（10）的液压控制系统（24）。液压控制系统具有带有第一和第二腔室（56,58）的流体致动器（30c），第一和第二计量阀（32,28）具有可移动以分别填充和排出第一和第二腔室的阀元件，并且至少一个流体传感器（40）被配置为产生指示流体致动器上的负载的负载信号。液压控制系统还具有可移动以产生流体致动器的期望速度信号的操作者界面装置（22）。液压控制系统还具有与第一和第二计量阀，至少一个流体传感器和操作者界面装置连通的控制器（48）。控制器被配置成基于期望的速度信号将第一计量阀的阀元件移动到一个位置，并且基于负载信号将第二计量阀的阀元件移动到一个位置，并且在第二腔室内的期望压力。

2. 发明申请

WO2012082354A3 INDEPENDENT METERING VALVE WITH FLOW LIMITER 审中-公开
公开(公告)号：WO2012082354A3
公开(公告)日：2012-06-21
申请号：PCT/US2011/062357
申请日：2011-11-29
申请人： CATERPILLAR INC. , FERRAZ, John , EGELJA, Aleksandar , MA, Pengfei , BESCHORNER, Matthew
发明人： FERRAZ, John , EGELJA, Aleksandar , MA, Pengfei , BESCHORNER, Matthew
IPC分类号： F15B13/02 , E02F9/22 , F16K31/12
摘要： An independent metering valve (24) (IMV) assembly is disclosed that includes a metering stem (21) including an inlet (29). The IMV assembly also includes a hydro-mechanical control valve (37) in communication with a fluid source and the inlet (29). The control valve (37) also including a spool (43) with a closed end (46) and an open end (42). The control valve (37) includes a biasing member (48) that biases the control valve (37) or spool (43) towards an open position thereby establishing communication between the fluid source and the inlet (29). The control valve (37) also including a load signal line (45) providing communication between an outlet (18) of the control valve (37) upstream of the inlet (29) and the closed end (46) of the spool (43). Wherein high pressure in the load signal line (45) allowing the control valve (37) to move towards a closed position thereby overcoming bias of the biasing member (48) and reducing flow to the inlet (29) during a high pressure condition.

3. 发明申请

WO2015102898A1 APPARATUS AND METHOD FOR HYDRAULIC SYSTEMS 审中-公开
标题翻译：液压系统的装置和方法
公开(公告)号：WO2015102898A1
公开(公告)日：2015-07-09
申请号：PCT/US2014/070775
申请日：2014-12-17
申请人： CATERPILLAR INC.
发明人： MA, Pengfei , ZHANG, Jiao , EGELJA, Aleksandar , SCHWAB, Michael
IPC分类号： E02F9/20 , E02F9/22 , F15B13/02
CPC分类号： F15B7/08 , E02F9/2217 , E02F9/2242 , E02F9/2292 , E02F9/2296 , F15B1/0275 , F15B11/17 , F15B2211/20584 , F15B2211/212 , F15B2211/30575 , F15B2211/41518 , F15B2211/6306 , F15B2211/6313 , F15B2211/6652 , F15B2211/6658 , F15B2211/71 , F15B2211/761 , F15B2211/78
摘要： A hydraulic system (100) and a method are disclosed. The hydraulic system (100) includes a first pump (106) having an outlet (116) that is fluidly coupled to a first actuator (102) via a first conduit (114), a second pump (136) having an outlet (144) that is fluidly coupled to a second actuator (104) via a second conduit (142), a flow control module (184, 300), and a controller (128) operatively coupled to the flow control module (184, 300), the controller (128) being configured to operate the flow control module (184, 300) in a first mode, such that the flow control module (184, 300) effects fluid communication between the auxiliary pump (182) and the first actuator (102) and blocks fluid communication between the auxiliary pump (182) and the first actuator (102), and operate the flow control module (184, 300) in a second mode, such that the flow control module (184, 300) effects fluid communication between the auxiliary pump (182) and the second actuator (104) and blocks fluid communication between the auxiliary pump (182) and the second actuator (104).
摘要翻译：公开了一种液压系统（100）和方法。液压系统（100）包括具有经由第一导管（114）与第一致动器（102）流体耦合的出口（116）的第一泵（106），具有出口（144）的第二泵（136）其经由第二导管（142），流量控制模块（184,300）和可操作地耦合到所述流量控制模块（184,300）的控制器（128）流体耦合到第二致动器（104），所述控制器（128）被构造成以第一模式操作所述流量控制模块（184,300），使得所述流量控制模块（184,300）实现所述辅助泵（182）和所述第一致动器（102）之间的流体连通，以及阻止辅助泵（182）和第一致动器（102）之间的流体连通，并且以第二模式操作流量控制模块（184,300），使得流量控制模块（184,300）辅助泵（182）和第二致动器（104），并且阻止辅助泵（182）和辅助泵（182）之间的流体连通 nd致动器（104）。

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