Transmission with a two-step actuator valve
    2.
    发明授权
    Transmission with a two-step actuator valve 有权
    用两步执行器阀传动

    公开(公告)号:US06729454B2

    公开(公告)日:2004-05-04

    申请号:US10139412

    申请日:2002-05-06

    IPC分类号: F16D2510

    摘要: A transmission having one or more clutches and brakes wherein only one clutch or brake need be engaged to connect the input to the output is equipped with a two-step actuator valve arrangement in which two valves, arranged in series, must be opened before any clutch or brake is engaged to power the output shaft. A single first-step actuator valve is arranged in series with a plurality of second-step actuator valves. Each of the second-step valves controls a clutch or brake.

    摘要翻译: 具有一个或多个离合器和制动器的变速器,其中仅一个离合器或制动器需要接合以将输入连接到输出端配备有两级致动器阀装置,其中两个串联布置的阀必须在任何离合器 或制动器接合以对输出轴供电。 单个第一级致动器阀与多个第二级致动器阀串联设置。 每个第二级阀控制离合器或制动器。

    Method and apparatus for detecting a restricted or bypassed transmission oil filter
    3.
    发明授权
    Method and apparatus for detecting a restricted or bypassed transmission oil filter 有权
    用于检测受限制或旁路传动油滤清器的方法和装置

    公开(公告)号:US06504474B1

    公开(公告)日:2003-01-07

    申请号:US09614202

    申请日:2000-07-12

    IPC分类号: B60Q100

    摘要: A method and apparatus for detecting a restricted or bypassed transmission oil filter by providing pressure transducers on both sides of the oil filter whereby the pressure differential will indicate the extent of filter restriction. A first alarm is activated at a first pressure differential to indicate a restricted filter and the need for filter replacement. A second, higher level, alarm is activated to indicate the filter is bypassed and the engine is reduced in speed to allow the pressure and the pressure differential to drop to the point that the filter is no longer bypassed. This enables the vehicle to be operated with limited capabilities to allow the vehicle to be driven to the shop for filter replacement. If the lowered engine speed is insufficient to reduce the pressure differential to stop the bypass, then the engine speed is further reduced to a low idle and the transmission shifted to neutral. The filter must be replaced before the vehicle is can be operated again to prevent damage to the hydrostatic unit in the transmission.

    摘要翻译: 一种用于通过在油过滤器的两侧设置压力传感器来检测限制或旁路的变速箱油过滤器的方法和装置,由此压差将指示过滤器限制的程度。 第一个报警在第一个压力差下被激活,表示有限的过滤器和更换过滤器的需要。 第二个更高级别的报警被激活以指示过滤器被旁路,并且发动机的速度降低以允许压力和压力差落到过滤器不再旁路的程度。 这使得车辆能够以有限的能力进行操作,以允许车辆被驱动到商店以进行过滤器更换。 如果降低的发动机转速不足以降低压差以停止旁路,则发动机转速进一步降低到低空转,变速箱转到空档。 必须更换过滤器,才能再次操作车辆,以防止变速箱内的​​静液压单元损坏。

    Solenoid driver circuit
    4.
    发明授权
    Solenoid driver circuit 失效
    电磁线圈驱动电路

    公开(公告)号:US5748431A

    公开(公告)日:1998-05-05

    申请号:US731472

    申请日:1996-10-16

    CPC分类号: H01F7/1844 H01F2007/1855

    摘要: An electrical circuit applies an oscillatory electrical current to a coil of a solenoid in order to cause the solenoid to move in response to a command signal. The circuit includes a signal divider for generating an upper peak current signal value from the command signal and a lower peak current signal value which is a fixed percentage of the upper peak current signal value. A current sense resistor generates a current sense voltage representing current through the coil. A first comparator compares the current sense voltage to the upper current signal value. A second comparator compares the current sense voltage to the lower current signal value. A set/reset flip-flop latches a current driver on and off. A current driver applies a driving current to the solenoid coil as a function of output signals generated by the first and second comparators so that the coil current will have a lower peak current value which is substantially a fixed percentage of the upper peak current value.

    摘要翻译: 电路将振荡电流施加到螺线管的线圈,以便响应于命令信号使螺线管移动。 电路包括用于根据命令信号产生上峰值电流信号值的信号分配器和作为上峰值电流信号值的固定百分比的较低峰值电流信号值。 电流检测电阻产生表示通过线圈的电流的电流感测电压。 第一比较器将电流检测电压与上电流信号值进行比较。 第二个比较器将电流检测电压与较低的电流信号值进行比较。 一个置位/复位触发器锁存当前的驱动器。 电流驱动器根据第一和第二比较器产生的输出信号将驱动电流施加到螺线管线圈,使得线圈电流将具有基本上是上峰值电流值的固定百分比的较低峰值电流值。

    Vehicle function management system

    公开(公告)号:US06292729B1

    公开(公告)日:2001-09-18

    申请号:US09291080

    申请日:1999-04-14

    IPC分类号: G06F770

    摘要: A tractor includes various actuators or functions, such as a powershift transmission, a hitch and hitch control system, a PTO, a plurality of selective control valves, etc., all controlled by one or more control units in response to sensed parameters and operator manipulated control devices, such as switches, knobs and levers. A function management system includes a programmed control unit which has a learn/save mode which is operable while the vehicle is moving. During the learn/save mode the operator performs a sequence of manual manipulations of the operator control devices, and the control unit records and then stores information pertaining to the sequence of operations, together with information pertaining to the distances traveled by the tractor between operations. The control unit also has an execute or replay mode, operable in response to an operator command signal, wherein the control unit automatically performs the stored sequence of operations so that the sequence of operations is performed at the same distance intervals at which they were learned, regardless of the speed of the vehicle.

    Method of adjusting an engine load signal used by a transmission
controller
    7.
    发明授权
    Method of adjusting an engine load signal used by a transmission controller 有权
    调整发送控制器使用的发动机负载信号的方法

    公开(公告)号:US6022292A

    公开(公告)日:2000-02-08

    申请号:US250780

    申请日:1999-02-12

    IPC分类号: F16H59/14 F16H59/50 F15H59/34

    摘要: A vehicle transmission controller responds of a load signal representing a load on the vehicle engine. The load signal is automatically and repeatedly adjusted as a function of an operational status of the auxiliary vehicle function, and the load signal is automatically adjusted during a shift of the transmission.

    摘要翻译: 车辆传动控制器响应表示车辆发动机上的负载的负载信号。 作为辅助车辆功能的操作状态的函数自动重复地调整负载信号,并且在变速器的换档期间自动调整负载信号。