公开(公告)号：US20160193916A1

公开(公告)日：2016-07-07

申请号：US15068647

申请日：2016-03-14

Applicant: Caterpillar Inc.

Inventor： Chad L. Kassube ,  Balmes Tejeda ,  Corwin E. Storer

IPC: B60K17/354

CPC classification number: B60K17/354 ,  B60K17/10 ,  B60K23/0808 ,  B60W2510/0657 ,  B60W2520/26 ,  B60W2520/40 ,  B60W2520/403 ,  B60Y2200/411

Abstract: A powertrain system for a machine is described. The powertrain system includes a power source configured to provide a torque output. The powertrain system further includes a first drivetrain coupled to the power source, to drive a first set of ground engaging members, and a second drivetrain coupled to the power source to drive the second set of ground engaging members. The powertrain system further includes a controller having one or more lug curve maps defining a maximum allowed torque value of the power source for a current operating condition of the machine. The controller is configured to determine a parasitic load due to the second drivetrain, and adjust the torque output of the power source based on the determined parasitic load to maintain a rimpull performance of the machine, where the adjusted torque output is limited by the maximum allowed torque value.

Abstract translation: 描述了用于机器的动力系统。 动力系统包括被配置为提供扭矩输出的动力源。 动力系统还包括耦合到电源的第一传动系，以驱动第一组地面接合构件，以及联接到动力源的第二传动系以驱动第二组接地构件。 动力系统还包括控制器，该控制器具有一个或多个凸耳曲线图，其限定当前机器的当前操作状态的电源的最大允许扭矩值。 控制器被配置为确定由于第二传动系统引起的寄生负载，并且基于确定的寄生负载来调节电源的扭矩输出，以保持机器的轮辋性能，其中调节的扭矩输出受允许的最大允许 扭矩值。

公开(公告)号：US20150198246A1

公开(公告)日：2015-07-16

申请号：US14154592

申请日：2014-01-14

Applicant: Caterpillar Inc.

Inventor： Joshua Callaway ,  Steven J. Juricak ,  Corwin E. Storer

IPC: F16H61/66

CPC classification number: F16H61/66 ,  E02F9/2253 ,  F16H61/42 ,  F16H2059/663

Abstract: A system for driving a machine is provided. A user input device inputs a desired throttle setting for the machine. The system includes an infinitely variable transmission having a transmission ratio that is adjustable. At least one sensor determines an inclination of the machine relative to a reference plane. A controller is configured to determine and apply a variable rate limit upon change in the transmission ratio based on the inclination of the machine when the desired throttle setting is reduced more than a predetermined amount and to adjust the rate limit based on the difference between an actual engine speed and a desired engine speed.

Abstract translation: 提供了一种用于驱动机器的系统。 用户输入设备为机器输入所需的节气门设定。 该系统包括具有可调节的传动比的无级变速器。 至少一个传感器确定机器相对于参考平面的倾斜度。 控制器被配置为当期望的节气门设定减少到预定量以上时，基于机器的倾斜度来确定和应用变速比变化时的可变速率限制，并且基于实际的 发动机转速和所需的发动机转速。

公开(公告)号：US20140260221A1

公开(公告)日：2014-09-18

申请号：US13802867

申请日：2013-03-14

Applicant: Caterpillar Inc.

Inventor： Rustin G. Metzger ,  Carl Moberg ,  Corwin E. Storer ,  Paul A. Dvorak

IPC: F16H61/46

CPC classification number: F16H61/46 ,  F16H61/421 ,  F16H61/431 ,  F16H61/47

Abstract: A hydrostatic drive system for a machine is disclosed. The hydrostatic drive system includes a pump, a hydraulic motor configured to receive a pressurized fluid from the pump and a controller operably connected to the pump and the hydraulic motor. The controller is configured to receive an input signal indicative of a current machine speed and a desired machine speed. Further, the controller is configured to output a motor displacement command signal and a pump displacement command signal to adjust a displacement of the hydraulic motor and the pump respectively based on the input signal to maintain at least one of constant machine speed or constant acceleration or constant deceleration during adjustment of the pump displacement and the motor displacement.

Abstract translation: 公开了一种用于机器的静液压驱动系统。 静液压驱动系统包括泵，构造成从泵接收加压流体的液压马达和可操作地连接到泵和液压马达的控制器。 控制器被配置为接收指示当前机器速度和期望机器速度的输入信号。 此外，控制器被配置为输出马达位移命令信号和泵排量指令信号，以分别基于输入信号调节液压马达和泵的位移，以保持恒定的机器速度或恒定加速度或恒定中的至少一个 调节泵位移和电机位移时减速。

公开(公告)号：US10011173B2

公开(公告)日：2018-07-03

申请号：US15068647

申请日：2016-03-14

Applicant: Caterpillar Inc.

Inventor： Chad L. Kassube ,  Balmes Tejeda ,  Corwin E. Storer

IPC: B60K17/10 ,  B60K17/354 ,  B60K23/08

CPC classification number: B60K17/354 ,  B60K17/10 ,  B60K23/0808 ,  B60W2510/0657 ,  B60W2520/26 ,  B60W2520/40 ,  B60W2520/403 ,  B60Y2200/411

Abstract: A powertrain system for a machine is described. The powertrain system includes a power source configured to provide a torque output. The powertrain system further includes a first drivetrain coupled to the power source, to drive a first set of ground engaging members, and a second drivetrain coupled to the power source to drive the second set of ground engaging members. The powertrain system further includes a controller having one or more lug curve maps defining a maximum allowed torque value of the power source for a current operating condition of the machine. The controller is configured to determine a parasitic load due to the second drivetrain, and adjust the torque output of the power source based on the determined parasitic load to maintain a rimpull performance of the machine, where the adjusted torque output is limited by the maximum allowed torque value.

公开(公告)号：US09328821B2

公开(公告)日：2016-05-03

申请号：US13913693

申请日：2013-06-10

Applicant: Caterpillar Inc.

Inventor： Corwin E. Storer

IPC: F16D31/02 ,  F16H61/4008 ,  F16H61/4035 ,  F16H61/44 ,  E02F3/76 ,  E02F9/22 ,  F16H59/68

CPC classification number: F16H61/4008 ,  B60Y2200/411 ,  E02F3/7645 ,  E02F9/2235 ,  E02F9/2253 ,  F16H61/4035 ,  F16H61/44 ,  F16H2059/6861

Abstract: A hydrostatic drive system for a machine is provided. The hydrostatic drive system includes a first hydraulic circuit, and a second hydraulic circuit. The first hydraulic circuit includes a first pump and a first hydraulic motor configured to selectively receive a flow of pressurized hydraulic fluid from the first pump at a first pressure. The second hydraulic circuit includes a second pump and a second hydraulic motor configured to selectively receive the flow of the pressurized hydraulic fluid from the second pump at a second pressure. The hydrostatic drive system further includes a controller configured to maintain a pressure balance between the first and the second hydraulic circuits based on a difference between the first pressure and the second pressure.

Abstract translation: 提供了一种用于机器的静液压驱动系统。 液压驱动系统包括第一液压回路和第二液压回路。 第一液压回路包括第一泵和第一液压马达，其构造成在第一压力下选择性地接收来自第一泵的加压液压流体流。 第二液压回路包括第二泵和第二液压马达，第二液压马达构造成在第二压力下选择性地接收来自第二泵的加压液压流体的流动。 静液压驱动系统还包括控制器，该控制器被配置为基于第一压力和第二压力之间的差异来保持第一和第二液压回路之间的压力平衡。

公开(公告)号：US20140360173A1

公开(公告)日：2014-12-11

申请号：US13913693

申请日：2013-06-10

Applicant: Caterpillar Inc.

Inventor： Corwin E. Storer

IPC: F15B11/17

CPC classification number: F16H61/4008 ,  B60Y2200/411 ,  E02F3/7645 ,  E02F9/2235 ,  E02F9/2253 ,  F16H61/4035 ,  F16H61/44 ,  F16H2059/6861

Abstract: A hydrostatic drive system for a machine is provided. The hydrostatic drive system includes a first hydraulic circuit, and a second hydraulic circuit. The first hydraulic circuit includes a first pump and a first hydraulic motor configured to selectively receive a flow of pressurized hydraulic fluid from the first pump at a first pressure. The second hydraulic circuit includes a second pump and a second hydraulic motor configured to selectively receive the flow of the pressurized hydraulic fluid from the second pump at a second pressure. The hydrostatic drive system further includes a controller configured to maintain a pressure balance between the first and the second hydraulic circuits based on a difference between the first pressure and the second pressure.

Abstract translation: 提供了一种用于机器的静液压驱动系统。 液压驱动系统包括第一液压回路和第二液压回路。 第一液压回路包括第一泵和第一液压马达，其构造成在第一压力下选择性地接收来自第一泵的加压液压流体流。 第二液压回路包括第二泵和第二液压马达，第二液压马达构造成在第二压力下选择性地接收来自第二泵的加压液压流体的流动。 静液压驱动系统还包括控制器，该控制器被配置为基于第一压力和第二压力之间的差异来保持第一和第二液压回路之间的压力平衡。

公开(公告)号：US09347554B2

公开(公告)日：2016-05-24

申请号：US13802867

申请日：2013-03-14

Applicant: Caterpillar Inc.

Inventor： Rustin G. Metzger ,  Carl Moberg ,  Corwin E. Storer ,  Paul A. Dvorak

IPC: F16H61/46 ,  F16H61/421 ,  F16H61/431 ,  F16H61/47

CPC classification number: F16H61/46 ,  F16H61/421 ,  F16H61/431 ,  F16H61/47

Abstract: A hydrostatic drive system for a machine is disclosed. The hydrostatic drive system includes a pump, a hydraulic motor configured to receive a pressurized fluid from the pump and a controller operably connected to the pump and the hydraulic motor. The controller is configured to receive an input signal indicative of a current machine speed and a desired machine speed. Further, the controller is configured to output a motor displacement command signal and a pump displacement command signal to adjust a displacement of the hydraulic motor and the pump respectively based on the input signal to maintain at least one of constant machine speed or constant acceleration or constant deceleration during adjustment of the pump displacement and the motor displacement.

Abstract translation: 公开了一种用于机器的静液压驱动系统。 静液压驱动系统包括泵，构造成从泵接收加压流体的液压马达和可操作地连接到泵和液压马达的控制器。 控制器被配置为接收指示当前机器速度和期望机器速度的输入信号。 此外，控制器被配置为输出马达位移命令信号和泵排量指令信号，以分别基于输入信号调节液压马达和泵的位移，以保持恒定的机器速度或恒定加速度或恒定中的至少一个 调节泵位移和电机位移时减速。

公开(公告)号：US09091343B1

公开(公告)日：2015-07-28

申请号：US14154592

申请日：2014-01-14

Applicant: Caterpillar Inc.

Inventor： Joshua Callaway ,  Steven J. Juricak ,  Corwin E. Storer

IPC: G06F17/00 ,  F16H61/66

CPC classification number: F16H61/66 ,  E02F9/2253 ,  F16H61/42 ,  F16H2059/663

Abstract: A system for driving a machine is provided. A user input device inputs a desired throttle setting for the machine. The system includes an infinitely variable transmission having a transmission ratio that is adjustable. At least one sensor determines an inclination of the machine relative to a reference plane. A controller is configured to determine and apply a variable rate limit upon change in the transmission ratio based on the inclination of the machine when the desired throttle setting is reduced more than a predetermined amount and to adjust the rate limit based on the difference between an actual engine speed and a desired engine speed.

Abstract translation: 提供了一种用于驱动机器的系统。 用户输入设备为机器输入所需的节气门设定。 该系统包括具有可调节的传动比的无级变速器。 至少一个传感器确定机器相对于参考平面的倾斜度。 控制器被配置为当期望的节气门设定减少到预定量以上时，基于机器的倾斜度来确定和应用变速比变化时的可变速率限制，并且基于实际的 发动机转速和所需的发动机转速。