利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

109 条记录 (耗时 0.014 秒)

    Work Machine Having a Hydro-Mechanical Drive Unit
    1.
    发明申请
    Work Machine Having a Hydro-Mechanical Drive Unit 有权

    公开(公告)号：US20230138883A1

    公开(公告)日：2023-05-04

    申请号：US17980091

    申请日：2022-11-03

    申请人： Weidemann GmbH

    发明人： Max Weymann ,  Andreas Albach

    IPC分类号： F02D41/04 ,  F16H61/462 ,  B60K11/02 ,  B60K11/06

    摘要： A mobile work machine has a drive unit for driving at least one drive element and/or a working element. The drive unit is hydromechanical drive unit with at least one internal combustion engine and hydraulic energy transmission unit with at least one hydraulic pump and a hydraulic motor. In normal operation, the motor shaft of the internal combustion engine rotates at a normal speed (n_0). Conversely, in a limit temperature operation in which a sensed actual operating temperature of the internal combustion engine or another part of the drive unit is higher than or equal to a target limit temperature (T_limit), an electrical control unit and/or electronic control unit controls the internal combustion engine in such a way that the motor shaft of the internal combustion engine rotates at a first speed (n_target) that is higher than the normal speed (n_0) of the motor shaft in normal operation.

    Method for controlling gear ratio of continuously variable transmission vehicle
    3.
    发明授权
    Method for controlling gear ratio of continuously variable transmission vehicle 有权

    公开(公告)号：US10352441B2

    公开(公告)日：2019-07-16

    申请号：US15815052

    申请日：2017-11-16

    申请人： Hyundai Motor Company ,  KIA Motors Corporation

    发明人： Chan Hee Won ,  Hyung Hee Lee ,  Woo Il Chang ,  Jun Sung Park ,  Ho Young Kim

    IPC分类号： F16H61/66 ,  F16H9/16 ,  F16H61/427 ,  F16H61/462

    摘要： A method for controlling a gear ratio of a continuously variable transmission vehicle includes: a step of detecting a position of a shift lever by a controller; a step of checking, by the controller, a gear ratio variation based on a difference between a desired stage gear ratio and a current gear ratio in a continuously variable transmission when the shift lever is detected to be positioned in a manual range; a step of calculating, by the controller, a gear ratio correction value based on a rate of change of engine RPM when the gear ratio variation is checked as being other than zero after the step of checking the gear ratio variation; and a step of correcting, by the controller, the gear ratio variation in response to the calculated gear ratio correction value after the calculation step.

    Hydro-mechanical continuously variable transmission for producing high torque output
    7.
    发明授权
    Hydro-mechanical continuously variable transmission for producing high torque output 有权
    水力机械无级变速器，用于产生高扭矩输出

    公开(公告)号：US09447858B2

    公开(公告)日：2016-09-20

    申请号：US14349059

    申请日：2012-11-12

    申请人： CNH Industrial America LLC

    发明人： Cecil Asoka Weeramantry ,  Haibo Guo

    IPC分类号： F16H47/10 ,  F16H47/04 ,  B60W10/02 ,  B60W10/103 ,  B60W30/19 ,  F16H61/462 ,  F16H37/10 ,  F16H37/08

    CPC分类号： F16H47/10 ,  B60W10/02 ,  B60W10/103 ,  B60W30/19 ,  F16H47/04 ,  F16H61/462 ,  F16H2037/0886 ,  F16H2037/106 ,  F16H2200/2005 ,  F16H2200/2007 ,  F16H2200/2023

    摘要： A hydro-mechanical continuously variable transmission for producing high torque output is provided. One transmission includes an engine drive shaft driven by an engine and a planetary gear unit driven by power from the engine and to provide power to drive a transmission output shaft. The transmission also includes a hydrostatic drive unit driven by power from the engine and to drive a primary hydrostatic drive shaft. The transmission includes an engine clutch to be driven by the engine and to drive an input sun gear of the planetary gear unit while engaged. The transmission includes a secondary hydrostatic drive shaft driven by the primary hydrostatic drive shaft and to drive a ring gear of the planetary gear unit. The transmission includes a hydrostatic output clutch driven by the secondary hydrostatic drive shaft and to provide power to drive an output sun gear of the planetary gear unit while engaged.

    摘要翻译： 提供了一种用于产生高扭矩输出的水力机械无级变速器。 一个变速器包括由发动机驱动的发动机驱动轴和由发动机的动力驱动的行星齿轮单元，并且提供驱动变速器输出轴的动力。 变速器还包括由发动机的动力驱动并驱动主静液压驱动轴的静液压驱动单元。 变速器包括由发动机驱动的发动机离合器并且在接合时驱动行星齿轮单元的输入太阳齿轮。 变速器包括由主静液压驱动轴驱动并驱动行星齿轮单元的齿圈的次级静液压驱动轴。 变速器包括由二级静液压驱动轴驱动的静液压输出离合器，并且在接合时提供驱动行星齿轮单元的输出太阳齿轮的动力。

    System and method of operating a machine having a continuously variable transmission
    8.
    发明授权
    System and method of operating a machine having a continuously variable transmission 有权
    操作具有无级变速器的机器的系统和方法

    公开(公告)号：US09169926B2

    公开(公告)日：2015-10-27

    申请号：US13666642

    申请日：2012-11-01

    申请人： Caterpillar Inc.

    发明人： Adam Nackers ,  Kevin Davis

    IPC分类号： B60W10/101 ,  F16H61/462 ,  F16H47/04

    CPC分类号： F16H61/462 ,  F16H47/04

    摘要： A system and method involves a machine that powertrain including a continuously variable transmission (CVT) and a machine speed sensor to determine a measured machine speed. The machine also includes a controller in communication with the CVT and the speed sensor. The controller may include a table relating the measured machine speed to a plurality of virtual gear ratios associated with the CVT. The controller is configured to determine a calculated virtual gear ratio using the table and, if desired, may display the calculated virtual gear ratio on a visual display.

    摘要翻译： 一种系统和方法涉及包括无级变速器（CVT）和机器速度传感器的动力传动系统的机器，以确定测量的机器速度。 该机器还包括与CVT和速度传感器通信的控制器。 控制器可以包括将测量的机器速度与与CVT相关联的多个虚拟齿轮比关联的表格。 控制器被配置为使用该表确定计算的虚拟齿轮比，并且如果需要，可以在可视显示器上显示计算的虚拟齿轮比。

    Utility vehicle driveline control method
    9.
    发明授权
    Utility vehicle driveline control method 失效
    实用车辆传动系统控制方法

    公开(公告)号：US5575737A

    公开(公告)日：1996-11-19

    申请号：US517482

    申请日：1995-08-21

    申请人： Heinz Weiss

    发明人： Heinz Weiss

    IPC分类号： B60K25/00 ,  B60K25/06 ,  B60W10/06 ,  B60W10/10 ,  B60W30/18 ,  F16H47/04 ,  F16H59/06 ,  F16H61/46 ,  F16H61/462 ,  F16H61/66 ,  B60K41/12

    CPC分类号： B60W10/06 ,  B60W10/101 ,  B60W30/1882 ,  F16H47/04 ,  F16H61/462 ,  F16H61/66 ,  B60W2510/0604 ,  B60W2510/0638 ,  B60W2710/0616 ,  B60W2710/1005 ,  F16H2059/743 ,  Y02T10/76 ,  Y10T477/623 ,  Y10T477/6237 ,  Y10T477/6242

    摘要： A method is described for controlling the power train of a work vehicle. The power train includes an engine with a fuel injection control and an infinitely variable transmission. The method include first determining an initial engine speed, an initial wheel speed, the actual engine speed, and the actual wheel speed. To improve comfort and reduce fuel consumption and emissions two steps are performed. First, the transmission ratio of the infinitely variable transmission will be increased if the actual engine speed is less than the initial engine speed, or decreased if the actual engine speed is greater than the initial engine speed. Second, while the transmission ratio remains constant, the engine speed will be adjusted until the engine speed is the same as the initial engine speed.

    摘要翻译： 描述了一种用于控制工作车辆的动力传动系的方法。 动力传动系包括具有燃料喷射控制和无级变速器的发动机。 该方法包括首先确定初始发动机速度，初始车轮速度，实际发动机转速和实际车轮速度。 为了提高舒适度并降低燃油消耗和排放，执行了两个步骤。 首先，如果实际发动机转速小于初始发动机转速，则无级变速器的变速比将增加，如果实际发动机转速大于初始发动机转速，则变速器减速。 第二，当传动比保持恒定时，发动机转速将被调节直到发动机转速与初始发动机转速相同。

    Dynamic braking on an all wheel drive machine
    10.
    发明授权
    Dynamic braking on an all wheel drive machine 失效
    全轮驱动机动态制动

    公开(公告)号：US5489007A

    公开(公告)日：1996-02-06

    申请号：US275857

    申请日：1994-07-15

    申请人： Leon P. Yesel

    发明人： Leon P. Yesel

    IPC分类号： B60K23/08 ,  B60T13/58 ,  F16H61/40 ,  F16H61/4157 ,  F16H61/456 ,  F16H61/46 ,  F16H61/462 ,  B60K28/16

    CPC分类号： F16H61/4157 ,  B60K23/08 ,  B60T13/585 ,  F16H61/456 ,  F16H61/46 ,  F16H61/462 ,  B60W2520/26

    摘要： Dynamic braking on the all wheel drive front wheel motors of a motor grader is implemented by turning on all the wheel drive system, depressing the inching pedal, sensing brake pressure, determining ground speed, determining a pump set point current using the ground speed, and setting actual pump current to 90% of set point current. Both sides of the drive loop are monitored and the high side pressure is used to control loop pressure. Motor displacement which is normally controlled by shift lever position is set to low displacement for braking. When the all wheel drive system is turned off, the inching pedal is released, or there is a loss of brake pressure the all wheel drive system disengages. The pump upstrokes to provide an anti-lock feature when the desired brake pressure is less than 30% of the set point. The pump upstrokes to reduce pressure and thereby limit maximum pressure when the desired brake pressure exceeds 30,000 kPa. When the desired brake pressure exceeds 90% of the set point the pump upstrokes to prevent the pump from driving the wheel motors.

    摘要翻译： 通过打开所有的车轮驱动系统，按下踏板踏板，感应制动压力，确定地面速度，使用地面速度确定泵的设定点电流，实现电动平地机全轮驱动前轮电动机的动态制动，以及 将实际泵浦电流设置为设定点电流的90％。 监控驱动环路的两侧，使用高侧压力来控制回路压力。 通常由换档杆位置控制的电机位移设置为低位移制动。 当全轮驱动系统关闭时，微动踏板被释放，或者全轮驱动系统脱离时制动压力损失。 当所需的制动压力小于设定值的30％时，泵上升以提供防抱死功能。 泵的冲程减小压力，从而在所需制动压力超过30,000 kPa时限制最大压力。 当所需的制动压力超过设定值的90％时，泵上升，以防止泵驱动车轮电机。