-
公开(公告)号：US20240026876A1
公开(公告)日：2024-01-25
申请号：US17813573
申请日：2022-07-19
申请人： Caterpillar Inc.
CPC分类号： F04B49/103 , F04B9/02 , F04B23/06 , F04B49/065 , F04B2201/1201 , F04B2201/1241 , F04B2201/1208 , F04B2203/0207 , F04B2203/0209 , F04B2205/06 , E21B43/2607
摘要： In some implementations, a controller may obtain a set of measurement values associated with the dual-pump single-power source system, wherein the set of measurement values includes at least one of one or more speed measurements associated with a clutch that is coupled to a power source and a first pump of the dual-pump single-power source system, a measurement value indicating an output speed of the power source, or a first crank angle associated with the first pump and a second crank angle associated with a second pump of the dual-pump single-power source system. The controller may detect that the clutch is experiencing slippage based on comparing at least two measurement values of the set of measurement values. The controller may perform an action to cause the clutch to disengage a mechanical connection between the first pump and the power source while the power source is running and is mechanically connected to the second pump.
-
公开(公告)号：US11649817B2
公开(公告)日：2023-05-16
申请号：US16963363
申请日：2019-01-23
发明人： Amal Bagulayan , Nan Mu , James Matthews , Bao Mi , Alexander Tanner Taylor , Marcos Suguru Kajita
CPC分类号： F04B49/065 , F04B23/04 , F04B49/20 , F04B2205/06 , F04B2205/09
摘要： Changing a cumulative pumping rate of multiple pump units by adjusting individual pumping rates of the pump units, wherein each temporary dip or spike of an individual pumping rate of one of the pump units is automatically offset by a predetermined temporary adjustment of an individual pumping rate of another one or more of the pump units to thereby reduce effects of the temporary dip or spike on the cumulative pumping rate of the pump units.
-
公开(公告)号：US20180202427A1
公开(公告)日：2018-07-19
申请号：US15870660
申请日：2018-01-12
申请人： Robert Bosch GmbH
发明人： Edna Boos , Roland Waschler
CPC分类号： F04B43/02 , F04B13/00 , F04B17/03 , F04B43/04 , F04B45/04 , F04B49/002 , F04B49/06 , F04B49/08 , F04B49/14 , F04B2205/06
摘要： A method for actuating a pump having a reciprocating piston or a diaphragm for pressure generation in a hydraulic system, the reciprocating piston or the diaphragm being moved by way of an actuator which is driven by a magnetic field of a magnet coil, and a system pressure in the hydraulic system being determined.
-
64.发明授权Method and apparatus for controlling an electric motor employed to power a fluidic pump 有权用于控制用于为流体泵供电的电动机的方法和装置公开(公告)号：US09356551B2
公开(公告)日：2016-05-31
申请号：US13756455
申请日：2013-01-31
发明人： Daniel J. Berry , Paul F. Turnbull , Chia-Chou Yeh
CPC分类号： H02P31/00 , F04B2205/06 , F04B2205/10 , F04B2205/11 , H02P29/60
摘要： An electric motor powers a fluidic pump fluidly connected to a hydraulic circuit. Operating the electric motor includes determining a heat transfer coefficient for the electric motor based upon a temperature of hydraulic fluid in the hydraulic circuit. A temperature of the electric motor is determined based upon the heat transfer coefficient. Operation of the electric motor is controlled based upon the temperature of the electric motor.
摘要翻译： 电动机驱动流体连接到液压回路的流体泵。 操作电动机包括基于液压回路中的液压流体的温度确定电动机的传热系数。 基于传热系数来确定电动机的温度。 基于电动机的温度来控制电动机的动作。
-
公开(公告)号：US20160084724A1
公开(公告)日：2016-03-24
申请号：US14861352
申请日：2015-09-22
申请人： OKUMA Corporation
发明人： Tomohiro SHIBATA
CPC分类号： F04B49/103 , F04B49/065 , F04B49/08 , F04B51/00 , F04B2201/1201 , F04B2201/1202 , F04B2205/06 , F04B2207/01
摘要： A hydraulic pressure control device comprising: a hydraulic sensor provided between a hydraulic pump and a load; a speed command arithmetic unit configured to output a speed command value Vc based on a difference between a hydraulic pressure detection value Pd from the hydraulic sensor and a hydraulic pressure command value Pc; a torque command value arithmetic unit configured to calculate a torque command value Tc based on a difference between a speed detection value Vd of a motor and the speed command value Vc; a current controller configured to control current of the motor based on the torque command value Tc; and a hydraulic pressure abnormality detector configured to detect whether a hydraulic circuit has abnormality based on the speed command value Vc and an operating condition of the load of the hydraulic circuit commanded from an upper-level control device.
摘要翻译： 一种液压控制装置，包括：设置在液压泵和负载之间的液压传感器; 速度指令运算部，其基于来自所述液压传感器的液压检测值Pd与液压指令值Pc之差输出速度指令值Vc; 扭矩指令值运算部，其基于马达的速度检测值Vd与速度指令值Vc之差计算转矩指令值Tc; 电流控制器，被配置为基于转矩指令值Tc来控制电动机的电流; 以及液压异常检测器，其被配置为基于速度指令值Vc和从上位控制装置指令的液压回路的负载的运转状况来检测液压回路是否有异常。
-
公开(公告)号：US20150267697A1
公开(公告)日：2015-09-24
申请号：US14223698
申请日：2014-03-24
申请人： Caterpillar Inc.
CPC分类号： F04B49/065 , E02F9/2228 , E02F9/2235 , E02F9/2292 , E02F9/2296 , F03C1/0678 , F04B1/26 , F04B23/06 , F04B49/08 , F04B49/22 , F04B2205/06 , F04B2205/09
摘要： Method of controlling multiple variable displacement hydraulic pumps determined relative to operator commands. If non-second-pump-dominated command, a respective adjusted displacement request is determined based upon the lesser of the operator requested torque limited displacement and an adjusted torque limited displacement that calculated based upon and the torque limited displacement of the respective pump and a scaling factor calculated based upon the first relief valve set pressure and respective pump pressure. If second-pump-dominated command, the set pressure of a relief valve associated with one of the pumps is instead utilized in calculating the scaling factor in the above strategy.
摘要翻译： 控制多个可变排量液压泵相对于操作者指令确定的方法。 如果以非二次泵为主的命令，则基于操作者所要求的扭矩限制位移和基于相应泵的扭矩限制位移计算的调整的转矩限制位移和缩放比例 基于第一安全阀设定压力和相应的泵压力计算的系数。 如果以二泵为主的指令，则在上述策略中计算缩放因子时，代替使用与其中一个泵相关的溢流阀的设定压力。
-
67.发明申请METHOD AND APPARATUS FOR CONTROLLING AN ELECTRIC MOTOR EMPLOYED TO POWER A FLUIDIC PUMP 有权用于控制使用电动泵的电动机的方法和装置公开(公告)号：US20140210392A1
公开(公告)日：2014-07-31
申请号：US13756455
申请日：2013-01-31
发明人： DANIEL J. BERRY , PAUL F. TURNBULL , CHIA-CHOU YEH
IPC分类号： H02P31/00
CPC分类号： H02P31/00 , F04B2205/06 , F04B2205/10 , F04B2205/11 , H02P29/60
摘要： An electric motor powers a fluidic pump fluidly connected to a hydraulic circuit. Operating the electric motor includes determining a heat transfer coefficient for the electric motor based upon a temperature of hydraulic fluid in the hydraulic circuit. A temperature of the electric motor is determined based upon the heat transfer coefficient. Operation of the electric motor is controlled based upon the temperature of the electric motor.
摘要翻译： 电动机驱动流体连接到液压回路的流体泵。 操作电动机包括基于液压回路中的液压流体的温度确定电动机的传热系数。 基于传热系数来确定电动机的温度。 基于电动机的温度来控制电动机的动作。
-
公开(公告)号：US20130243611A1
公开(公告)日：2013-09-19
申请号：US13616131
申请日：2012-09-14
申请人： Egon Rill
发明人： Egon Rill
IPC分类号： F04D13/02
CPC分类号： F04B27/18 , F01P7/044 , F01P2025/62 , F01P2025/64 , F04B1/26 , F04B1/34 , F04B17/05 , F04B49/02 , F04B49/06 , F04B49/12 , F04B2201/12 , F04B2205/06 , F04B2207/044 , F04D13/02
摘要： A hydraulic fan drive for a cooling system of an internal combustion engine, in particular a diesel engine of a mobile working machine or a construction machine, is configured to be switched off for a short time or by way of a transition in dependence on a load of the internal combustion engine. A shut-off valve, which is arranged in a working line connecting a variable-displacement pump to a fan motor, is configured to switch off the fan drive. The fan drive is further configured to be switched off by rotational speed monitoring of the internal combustion engine.
摘要翻译： 用于内燃机，特别是可移动工作机械或建筑机械的柴油发动机的冷却系统的液压风扇驱动器被配置为在短时间内关闭或通过依赖于负载的转换 的内燃机。 配置在将可变排量泵连接到风扇马达的工作线中的截止阀被配置为关闭风扇驱动器。 风扇驱动器被进一步构造成通过内燃机的转速监视来关闭。
-
69.发明授权Pump unit comprising a main pump and a charge pump with a variable pump capacity 有权泵单元包括主泵和具有可变泵容量的电荷泵公开(公告)号：US08231359B2
公开(公告)日：2012-07-31
申请号：US12595547
申请日：2008-04-22
CPC分类号： F04B23/106 , F04B49/12 , F04B2205/01 , F04B2205/06 , F04C14/02
摘要： A pump unit includes a main pump (4) and a charge pump (5), the pump capacity of which is adjustable via an adjusting element. To adjust the pump capacity of the charge pump (5), an adjusting element of the charge pump (5) is acted upon by an adjusting force which is dependent on the inlet pressure of the main pump (4).
摘要翻译： 泵单元包括主泵（4）和电荷泵（5），其泵容量通过调节元件可调节。 为了调节电荷泵（5）的泵容量，电荷泵（5）的调节元件受到取决于主泵（4）的入口压力的调节力的作用。
-
公开(公告)号：US20100147256A1
公开(公告)日：2010-06-17
申请号：US12591828
申请日：2009-12-02
申请人： Katsuaki Takahashi
发明人： Katsuaki Takahashi
CPC分类号： F01M1/20 , F04B49/08 , F04B2205/06 , Y10T137/86002
摘要： An abnormality detecting device for a hydraulic system is disclosed. The hydraulic system has a pressure level switching mechanism that adjusts oil pressure in accordance with the operating state of an internal combustion engine. The device includes an oil pressure sensor and a ECU. The oil pressure sensor detects an oil pressure that is adjusted by the pressure level switching mechanism. When the pressure level switching mechanism changes the oil pressure from a first oil pressure level to a second oil pressure level, which is higher than the first oil pressure level, the ECU compares the oil pressure detected by the oil pressure sensor with a determination oil pressure level, which is lower than and close to the second oil pressure level. The ECU determines that there is an abnormality in the hydraulic system if the oil pressure detected by the oil pressure sensor does not change to pass the determination oil pressure level.
摘要翻译： 公开了一种用于液压系统的异常检测装置。 液压系统具有根据内燃机的运行状态来调节油压的压力水平切换机构。 该装置包括油压传感器和ECU。 油压传感器检测由压力水平切换机构调节的油压。 当压力水平切换机构将油压从第一油压水平改变到高于第一油压水平的第二油压水平时，ECU将由油压传感器检测到的油压与确定油压进行比较 水平低于和接近第二油压水平。 如果由油压传感器检测到的油压不改变以通过确定油压水平，则ECU确定液压系统中存在异常。
-
-
-
-
-
-
-
-
-
搜索结果
81 条记录 (耗时 0.018 秒)
