公开(公告)号：US20150198241A1

公开(公告)日：2015-07-16

申请号：US14154309

申请日：2014-01-14

Applicant: Caterpillar Inc.

Inventor： Michael Barngrover ,  Daniel G. Wear

IPC: F16H61/02 ,  F16K31/06 ,  F16K11/07

CPC classification number: F16H61/0251 ,  F16H2061/0253 ,  F16K11/07 ,  F16K31/0613 ,  Y10T137/0318 ,  Y10T137/86622

Abstract: A spool valve is associated with a hydraulic system and includes a valve body delineating an inlet port, a relief port, and an actuator port. A spool is movably disposed inside the valve body between relief position, an opened position, and a modulating position. A solenoid can initially urge the spool from the relief position to the opened position to establish fluid communication between the inlet port and the actuator port. As a result, flow forces can further urge the spool to the opened position. When fluid communication between the inlet port and the actuator port ceases, the spool moves to a modulating position.

Abstract translation: 滑阀与液压系统相关联并且包括描绘入口端口，排放端口和致动器端口的阀体。 阀芯在释放位置，打开位置和调节位置之间可动地设置在阀体内。 螺线管可以最初将阀芯从释放位置推动到打开位置，以在入口端口和致动器端口之间建立流体连通。 结果，流动力可以进一步推动卷轴到打开位置。 当进口和致动器端口之间的流体连通停止时，阀芯移动到调制位置。

公开(公告)号：US09002595B2

公开(公告)日：2015-04-07

申请号：US13666527

申请日：2012-11-01

Applicant: Caterpillar Inc.

Inventor： Kevin Davis ,  Adam Nackers ,  Michael Barngrover ,  Brian D. Kuras

IPC: F16H61/66 ,  F16H61/472 ,  B60W10/101 ,  B60W10/103 ,  B60W30/188 ,  F16H47/04

CPC classification number: B60W30/1882 ,  B60W10/103 ,  B60W2710/1038 ,  B60W2710/105 ,  B60Y2200/411 ,  F16H47/04 ,  Y10T477/60 ,  Y10T477/619

Abstract: A method regulates the torque output and/or speed output of a continuously variable transmission (CVT) in a manner that may simulate a clutch. The CVT may be incorporated in a machine and maybe operatively coupled to a power source and to a propulsion device. The method utilizes an unaltered torque-to-speed curve that relates the torque output to the speed output of the CVT. The method may receive an operator input signal indicating a desire to change operation of the machine. The torque-to-speed curve may be shifted in response to the operator input signal to limit the torque output available. In an aspect, an under-run curve may be applied to the torque-to-speed curve, the under-run curve corresponding to a target speed. The operator input signal may also shift the under-run curve to reduce the target speed.

Abstract translation: 一种方法以可模拟离合器的方式调节无级变速器（CVT）的扭矩输出和/或速度输出。 CVT可以结合在机器中并且可以可操作地耦合到电源和推进装置。 该方法利用将转矩输出与CVT的速度输出相关联的未改变的转矩 - 转速曲线。 该方法可以接收指示改变机器操作的期望的操作者输入信号。 扭矩到速度曲线可以响应于操作者输入信号而偏移以限制可用的扭矩输出。 在一个方面，运行中的曲线可以应用于转矩 - 速度曲线，对应于目标速度的欠运行曲线。 操作员输入信号也可以移动欠运行曲线以降低目标速度。

公开(公告)号：US08772954B1

公开(公告)日：2014-07-08

申请号：US13862559

申请日：2013-04-15

Applicant: Caterpillar Inc.

Inventor： Michael Barngrover

IPC: F02D29/06 ,  F03B13/10 ,  F03B15/08 ,  H02P9/04 ,  F03D9/00 ,  H02P9/00

CPC classification number: H02P5/74 ,  B60K6/46 ,  B60L3/003 ,  B60L15/007 ,  B60L2200/40 ,  B60L2200/44 ,  B60L2210/30 ,  B60L2210/40 ,  B60L2220/42 ,  B60L2240/527 ,  F02D29/06 ,  Y02P90/60 ,  Y02T10/6217 ,  Y02T10/645 ,  Y02T10/646 ,  Y02T10/7241

Abstract: A machine is described that includes an electric drive for propelling the machine along a ground surface. The machine includes an electric power system having a first generator and a second generator. The electric power system also includes a first rectifier coupled to the first generator and having a first direct current (DC) power output and a second rectifier coupled to the second generator and having a second DC power output. Both the first DC output and the second DC output are coupled to the single DC bus, thereby providing an arrangement for the first rectifier and the second rectifier to simultaneously provide power to the single DC bus. A power balancer control receives power commands from both the first and the second ECMs and issues a corrective voltage adjustment to at least one of the first and second ECMs.

Abstract translation: 描述了一种机器，其包括用于沿着地面推进机器的电驱动器。 该机器包括具有第一发电机和第二发电机的电力系统。 电力系统还包括耦合到第一发电机并具有第一直流（DC）功率输出的第一整流器和耦合到第二发电机并具有第二直流功率输出的第二整流器。 第一直流输出和第二直流输出都耦合到单个直流总线，从而为第一整流器和第二整流器提供同时向单个DC总线提供电力的布置。 功率平衡器控制器从第一和第二ECM两者接收功率命令，并向第一和第二ECM中的至少一个发出校正电压调节。

公开(公告)号：US09803749B2

公开(公告)日：2017-10-31

申请号：US14818403

申请日：2015-08-05

Applicant: Caterpillar Inc.

Inventor： Michael Barngrover

IPC: F16H61/433 ,  F16H37/08 ,  F16H47/04

CPC classification number: F16H61/433 ,  F16H37/0833 ,  F16H47/04 ,  F16H2037/088 ,  F16H2047/045

Abstract: A system for hydraulically coupled multi-variator actuation is disclosed. One system includes: a first hydraulic variator comprising: a first hydraulic pump; and a first hydraulic motor linked to the first hydraulic pump. The system may further include a second hydraulic variator comprising: a second hydraulic pump; and a second hydraulic motor linked to the second hydraulic pump. The system may further include a first actuator linked to the first hydraulic pump and configured to control a displacement of the first hydraulic pump; a second actuator linked to the second hydraulic pump and configured to control a displacement of the second hydraulic pump; a hydraulic link connecting the first actuator and the second actuator, the hydraulic link configured to facilitate a coordinated operation of the first actuator and the second actuator; a valve disposed in fluid communication with the hydraulic link connecting the first actuator and the second actuator; and a controller connected to the valve and configured to control an operation of the valve to regulate hydraulic flow in the hydraulic link.

公开(公告)号：US20140095035A1

公开(公告)日：2014-04-03

申请号：US13658465

申请日：2012-10-23

Applicant: CATERPILLAR INC.

Inventor： Brian D. Hoff ,  Michael Barngrover ,  Mark E. Rettig

IPC: F16H61/66

CPC classification number: B60W30/1884 ,  B60W10/02 ,  B60W2520/30 ,  B60W2710/105 ,  B60Y2300/56 ,  F16H61/472

Abstract: System and method for controlling a transmission in response to transient torque events are disclosed. The method includes commanding a maximum transmission output torque; comparing the commanded output torque to a feedback torque to determine if they are equal; and incrementally increasing the transmission output torque until equal. A machine and a powertrain include a controller configured to command a maximum negative transmission output torque in response to a transient torque event, and incrementally increase the transmission output torque until such time as the transmission output torque is equal to or within a preset range of the feedback torque.

Abstract translation: 公开了用于响应于瞬时扭矩事件来控制传动的系统和方法。 该方法包括命令最大传输输出扭矩; 将指令输出转矩与反馈转矩进行比较，以确定它们是否相等; 并增加传动输出扭矩直到相等。 机器和动力传动系包括：控制器，被配置为响应于瞬时转矩事件来命令最大负传动输出转矩，并递增地增加变速器输出扭矩，直到变速器输出转矩等于或在预定范围内 反馈扭矩。

公开(公告)号：US08918258B2

公开(公告)日：2014-12-23

申请号：US13658465

申请日：2012-10-23

Applicant: Caterpillar Inc.

Inventor： Brian D. Hoff ,  Michael Barngrover ,  Mark E. Rettig

IPC: B60W30/18 ,  F16H61/40

CPC classification number: B60W30/1884 ,  B60W10/02 ,  B60W2520/30 ,  B60W2710/105 ,  B60Y2300/56 ,  F16H61/472

Abstract: System and method for controlling a transmission in response to transient torque events are disclosed. The method includes commanding a maximum transmission output torque; comparing the commanded output torque to a feedback torque to determine if they are equal; and incrementally increasing the transmission output torque until equal. A machine and a powertrain include a controller configured to command a maximum negative transmission output torque in response to a transient torque event, and incrementally increase the transmission output torque until such time as the transmission output torque is equal to or within a preset range of the feedback torque.

Abstract translation: 公开了用于响应于瞬时扭矩事件来控制传动的系统和方法。 该方法包括命令最大传输输出扭矩; 将指令输出转矩与反馈转矩进行比较，以确定它们是否相等; 并增加传动输出扭矩直到相等。 机器和动力传动系包括：控制器，被配置为响应于瞬时转矩事件来命令最大负传动输出转矩，并递增地增加变速器输出扭矩，直到变速器输出转矩等于或在预定范围内 反馈扭矩。

公开(公告)号：US20170037964A1

公开(公告)日：2017-02-09

申请号：US14818403

申请日：2015-08-05

Applicant: Caterpillar Inc.

Inventor： Michael Barngrover

IPC: F16H61/433 ,  F16H61/44 ,  F16H39/06 ,  F16H61/4035

CPC classification number: F16H61/433 ,  F16H37/0833 ,  F16H47/04 ,  F16H2037/088 ,  F16H2047/045

Abstract: A system for hydraulically coupled multi-variator actuation is disclosed. One system includes: a first hydraulic variator comprising: a first hydraulic pump; and a first hydraulic motor linked to the first hydraulic pump. The system may further include a second hydraulic variator comprising: a second hydraulic pump; and a second hydraulic motor linked to the second hydraulic pump. The system may further include a first actuator linked to the first hydraulic pump and configured to control a displacement of the first hydraulic pump; a second actuator linked to the second hydraulic pump and configured to control a displacement of the second hydraulic pump; a hydraulic link connecting the first actuator and the second actuator, the hydraulic link configured to facilitate a coordinated operation of the first actuator and the second actuator; a valve disposed in fluid communication with the hydraulic link connecting the first actuator and the second actuator; and a controller connected to the valve and configured to control an operation of the valve to regulate hydraulic flow in the hydraulic link.

Abstract translation: 公开了一种用于液压耦合多变换器致动的系统。 一个系统包括：第一液压变速器，包括：第一液压泵; 以及与第一液压泵连接的第一液压马达。 该系统还可以包括第二液压变速器，其包括：第二液压泵; 和与第二液压泵连接的第二液压马达。 该系统可以进一步包括连接到第一液压泵并构造成控制第一液压泵的排量的第一致动器; 连接到第二液压泵的构造成控制第二液压泵的排量的第二致动器; 连接所述第一致动器和所述第二致动器的液压连杆，所述液压连杆构造成便于所述第一致动器和所述第二致动器的协调操作; 设置成与连接第一致动器和第二致动器的液压连杆流体连通的阀; 以及连接到所述阀并被配置为控制所述阀的操作以调节所述液压连杆中的液压流动的控制器。

公开(公告)号：US20170037963A1

公开(公告)日：2017-02-09

申请号：US14818550

申请日：2015-08-05

Applicant: Caterpillar Inc.

Inventor： Michael Barngrover ,  Brian Kuras

IPC: F16H61/42 ,  F16H61/44 ,  F16H39/06

CPC classification number: F16H61/42 ,  F16H39/06 ,  F16H47/04 ,  F16H61/433 ,  F16H61/44 ,  F16H61/456 ,  F16H2037/088 ,  F16H2047/045

Abstract: A system for mechanically coupled multi-variator actuation is disclosed. One system includes: a first hydraulic variator comprising: a first hydraulic pump; and a first hydraulic motor linked to the first hydraulic pump. The system may further include a second hydraulic variator comprising: a second hydraulic pump; and a second hydraulic motor linked to the second hydraulic pump. The system may further include a first actuator linked to the first hydraulic pump and configured to control a displacement of the first hydraulic pump; a second actuator linked to the second hydraulic pump and configured to control a displacement of the second hydraulic pump; and a mechanical link connecting the first actuator and the second actuator, the mechanical link configured to facilitate a coordinated operation of the first actuator and the second actuator.

Abstract translation: 公开了一种用于机械耦合的多变换器致动系统。 一个系统包括：第一液压变速器，包括：第一液压泵; 以及与第一液压泵连接的第一液压马达。 该系统还可以包括第二液压变速器，其包括：第二液压泵; 和与第二液压泵连接的第二液压马达。 该系统可以进一步包括连接到第一液压泵并构造成控制第一液压泵的排量的第一致动器; 连接到第二液压泵的构造成控制第二液压泵的排量的第二致动器; 以及连接所述第一致动器和所述第二致动器的机械连杆，所述机械连杆构造成便于所述第一致动器和所述第二致动器的协调操作。