Hydrostatic pump and motor with improved torque reversal characteristics
    2.
    发明申请
    Hydrostatic pump and motor with improved torque reversal characteristics 失效
    静液压泵和电机具有改进的扭矩反转特性

    公开(公告)号:US20100095665A1

    公开(公告)日:2010-04-22

    申请号:US12255350

    申请日:2008-10-21

    IPC分类号: F15B13/044 F15B21/08

    摘要: A system and method for variator control employs positively directed electronic make-up and flushing relief valves for more precise torque control of a hydraulic variator, especially during torque reversal, as well as improved cold weather operation. This can improve machine response during periods of severe torque change. The ability to more tightly control variator torque allows more precise torque management algorithms for power control and engine matching purposes. Moreover, the ability to positively control venting of the hydraulic circuit for purposes of fluid cooling allows for more consistent machine response regardless of ambient temperature.

    摘要翻译: 用于变换器控制的系统和方法使用正向电子化妆和冲洗安全阀,用于液压变速器的更精确的扭矩控制,特别是在扭矩反转期间以及改进的寒冷天气操作。 这可以在严重的扭矩变化期间改善机器响应。 更紧密地控制变矩器扭矩的能力允许更精确的扭矩管理算法用于功率控制和发动机匹配目的。 此外,为了流体冷却的目的,积极控制液压回路排气的能力允许不管环境温度如何,更一致的机器响应。

    Method and apparatus for operating a continuously variable transmission in the torque limited region near zero output speed
    5.
    发明授权
    Method and apparatus for operating a continuously variable transmission in the torque limited region near zero output speed 失效
    在零输出速度附近的转矩限制区域内操作无级变速器的方法和装置

    公开(公告)号:US06424902B1

    公开(公告)日:2002-07-23

    申请号:US09699953

    申请日:2000-10-30

    申请人: Brian D. Kuras

    发明人: Brian D. Kuras

    IPC分类号: G06F700

    摘要: An apparatus for controlling a continuously variable transmission includes an input shaft driven by an engine, an output shaft, an operator input for generating speed commands and a controller operable to receive the speed commands and generate transmission ratio commands which control a ratio of a speed of the output shaft to a speed of the input shaft. Torque of the output shaft is limited in a torque limited region near zero speed of the output shaft and the transmission ratio command is modified in the torque limited region.

    摘要翻译: 用于控制无级变速器的装置包括由发动机驱动的输入轴,输出轴,用于产生速度指令的操作者输入和可操作以接收速度指令的控制器,并产生控制比例的传动比命令, 输出轴到输入轴的转速。 输出轴的扭矩在输出轴接近零速度的转矩限制区域受到限制,传动比指令在扭矩限制区域中被修改。

    Electric motor actuation of a hydrostatic pump
    6.
    发明授权
    Electric motor actuation of a hydrostatic pump 失效
    液压泵的电动机驱动

    公开(公告)号:US08074451B2

    公开(公告)日:2011-12-13

    申请号:US12131662

    申请日:2008-06-02

    IPC分类号: F16D31/02 F01B3/02

    摘要: A hydraulic motor system for improved frequency response includes a hydraulic variator having a pump and a motor, wherein the pump includes a variable angle swash plate, and the system further includes an electric actuator for controlling an angle or torque of the swash plate, thereby controlling the motor output characteristics. The electric actuator for controlling the variable angle swash plate may comprise a linear electric motor, ball screw drive or a rotary electric motor. In an example, the rotary electric motor tilts the swash plate by applying a torque to the swash plate at a point away from its tilt axis. In a further example, the rotary electric motor tilts the swash plate via a worm drive or ball screw drive.

    摘要翻译: 用于改善频率响应的液压马达系统包括具有泵和马达的液压变速器,其中所述泵包括可变角度斜盘,并且所述系统还包括用于控制所述斜盘的角度或扭矩的电致动器,由此控制 电机输出特性。 用于控制可变角度斜盘的电致动器可以包括线性电动机,滚珠丝杠驱动器或旋转电动机。 在一个示例中,旋转电动机通过在远离其倾斜轴的点处向斜盘施加扭矩来倾斜斜盘。 在另一个例子中,旋转电动机通过蜗杆传动或滚珠丝杠驱动来使旋转斜盘倾斜。

    PART-THROTTLE PERFORMANCE OPTIMIZATION
    7.
    发明申请
    PART-THROTTLE PERFORMANCE OPTIMIZATION 有权
    零件性能优化

    公开(公告)号:US20090156360A1

    公开(公告)日:2009-06-18

    申请号:US11956081

    申请日:2007-12-13

    IPC分类号: B60W10/04 G06F19/00

    摘要: A system and method for optimizing machine performance using speed shaping in a machine having an engine and a drivetrain implementing engine underspeed module receives a throttle command requesting an increase in engine speed and transmits the throttle command to the engine. If the requested increase exceeds a predetermined function, the predetermined function is forwarded to the engine underspeed module as a speed standard. The engine underspeed module determines whether the actual engine speed attained by the engine is less than the speed standard by more than a predetermined gap value and, if so, reduces the power required by the drivetrain to avoid lugging of the engine.

    摘要翻译: 在具有发动机和传动系实现发动机欠速模块的机器中使用速度成形来优化机器性能的系统和方法接收到要求增加发动机速度并且向发动机发送节气门指令的节气门指令。 如果所请求的增加超过预定功能,则预定功能作为速度标准转发到发动机低速模块。 发动机欠速模块确定发动机获得的实际发动机转速是否小于速度标准超过预定的间隙值,如果是,则减小动力传动系统所需的功率,以避免发动机悬挂。

    Vehicle drivetrain having hydraulic power assist
    9.
    发明申请
    Vehicle drivetrain having hydraulic power assist 审中-公开
    具有液压动力辅助的车辆传动系

    公开(公告)号:US20080039262A1

    公开(公告)日:2008-02-14

    申请号:US11501699

    申请日:2006-08-10

    IPC分类号: F16H47/04

    摘要: A drivetrain for use in a mobile vehicle is disclosed. The drivetrain may have a combustion engine with a mechanical output, a ground engaging traction device, and a primary transmission unit. The primary transmission unit may be connected to transmit power from the mechanical output to the ground engaging traction device. The drive train may also have a hydraulic power assist unit operatively connected to the mechanical power output to selectively drive the combustion engine.

    摘要翻译: 公开了一种用于移动车辆的传动系。 传动系可以具有机械输出的内燃机,地面接合牵引装置和主传动装置。 主传动单元可以被连接以将动力从机械输出传递到地面接合牵引装置。 传动系还可以具有可操作地连接到机械动力输出的液压动力辅助单元,以选择性地驱动内燃机。

    Method and apparatus for preventing hunting between ranges in a continuously variable transmission
    10.
    发明授权
    Method and apparatus for preventing hunting between ranges in a continuously variable transmission 失效
    用于防止在无级变速器中的范围之间的摆动的方法和装置

    公开(公告)号:US06409628B1

    公开(公告)日:2002-06-25

    申请号:US09676411

    申请日:2000-09-29

    申请人: Brian D. Kuras

    发明人: Brian D. Kuras

    IPC分类号: B60K4116

    摘要: A transmission assembly is disclosed. The transmission assembly includes a continuously variable transmission driven by an input shaft at an input speed, a mechanical transmission coupled to the continuously variable transmission for selecting a first gear range and a second gear range, an output shaft driven by the mechanical transmission at an output speed, and controller operable to receive a speed command and generate a transmission ratio is command which control a ratio of the output speed to the input speed, and generate a shift command which causes the mechanical transmission to shift from the first gear range to the second gear range. An upper transmission ratio limit defined by an engine lug limit. A lower transmission ratio limit is defined by an engine overspeed limit. The controller causes the transmission to execute a shift from the first gear range to the second gear range which causes an instantaneous change in output speed. The engine lug limit or the engine overspeed limit are adjusted to inhibit a subsequent shift from the second gear range to the first gear range. A method for controlling a transmission assembly is also disclosed.

    摘要翻译: 公开了传动组件。 传动组件包括以输入速度由输入轴驱动的无级变速传动装置,耦合到无级变速器的机械传动装置,用于选择第一档位范围和第二档位范围;输出轴,由机械变速器在输出端 速度和控制器,其可操作以接收速度命令并产生传动比是控制输出速度与输入速度的比率的命令,并且生成使机械变速器从第一档位移动到第二档位的换档命令 齿轮范围 由发动机凸耳极限限定的上传动比限制。 较低的传动比限制由发动机超速限制定义。 控制器使得变速器执行从第一档位到第二档位的换档,这导致输出速度的瞬时变化。 发动机凸耳极限或发动机超速限制被调节以阻止随后从第二档位移到第一档位。 还公开了一种用于控制变速器组件的方法。