公开(公告)号：US06725992B1

公开(公告)日：2004-04-27

申请号：US10303599

申请日：2002-11-25

申请人： E. David Ray ,  Fredric H. Tubbs

发明人： E. David Ray ,  Fredric H. Tubbs

IPC分类号： F16D27115

CPC分类号： F16D27/115 ,  F16D27/004

摘要： Engagement characteristics of electromagnetic friction clutch pack assemblies disposed in, for example, motor vehicle transfer cases are improved, especially at the transition between static and dynamic friction modes, by superimposing a random noise signal on an otherwise smooth analog or stepped digital signal. The controller and driver for the clutch includes a random noise (signal) generator having an output which is superimposed on the controller output generated in response to signals from various sensors disposed on the vehicle. When the controller inputs cause clutch engagement in accordance with the controller software, an engagement signal comprising both a drive portion and a smaller random noise portion is supplied to the electromagnetic clutch operator. Improved, less perceptible clutch engagement action is thereby achieved.

摘要翻译： 通过将随机噪声信号叠加在其他平滑的模拟或阶梯式数字信号上，特别是在静摩擦模式和动态摩擦模式之间的转换时，改进了设置在例如机动车辆传送箱中的电磁摩擦离合器组件的接合特性。 用于离合器的控制器和驱动器包括随机噪声（信号）发生器，其具有叠加在响应于设置在车辆上的各种传感器的信号而产生的控制器输出上的输出。 当控制器输入根据控制器软件引起离合器接合时，将包括驱动部分和较小随机噪声部分的接合信号提供给电磁离合器操作器。 由此实现了改进的，较不可察觉的离合器接合动作。

公开(公告)号：US07172528B2

公开(公告)日：2007-02-06

申请号：US10773108

申请日：2004-02-05

申请人： Andy Yu ,  Fredric H. Tubbs ,  Thomas J. Foster

发明人： Andy Yu ,  Fredric H. Tubbs ,  Thomas J. Foster

IPC分类号： F16H3/44

CPC分类号： B60K17/3467

摘要： A transfer case for a vehicle that includes a planetary gear assembly, a clutch pack assembly, and a band and drum assembly that provide an overdrive or underdrive and direct drive in combination with a vehicle transmission. In one embodiment, an input shaft drives an outer ring gear of the planetary gear assembly and is coupled to one set of discs of the clutch assembly. A carrier of the planetary gear assembly is coupled to a rear output shaft, where the carrier supports a plurality of pinion gears. A sun gear of the planetary gear assembly is coupled to another set of discs of the clutch assembly that are coupled to the drum. When the clutch assembly is engaged, the ring gear is coupled to the sun gear for direct drive and when the band is engaged, the pinion gears and the ring gear provide underdrive.

摘要翻译： 一种用于车辆的分动箱，包括行星齿轮组件，离合器组件以及与车辆变速器组合提供过驱动或欠驱动和直接驱动的带和鼓组件。 在一个实施例中，输入轴驱动行星齿轮组件的外齿圈并且联接到离合器组件的一组盘。 行星齿轮组件的载体联接到后输出轴，其中载体支撑多个小齿轮。 行星齿轮组件的太阳齿轮联接到耦合到滚筒的离合器组件的另一组盘。 当离合器组件接合时，齿圈联接到太阳齿轮用于直接驱动，并且当带接合时，小齿轮和齿圈提供欠驱动。