Continuously variable transmission
    1.
    发明授权
    Continuously variable transmission 失效
    连续可变传动

    公开(公告)号:US5662547A

    公开(公告)日:1997-09-02

    申请号:US621503

    申请日:1996-03-25

    摘要: A belt type continuously variable transmission (CVT) and a planetary gear unit are combined in a continuously variable transmission system for an automobile to deliver an output from the output shaft in the normal and reverse directions with a neutral position therebetween. A control mechanism with a hydraulic circuit controls hydraulic pressure of primary and secondary hydraulic servos for controlling axial forces applied to respective primary and secondary pulleys of the belt type continuously variable transmission. When an axial force difference is produced between the primary pulley and the secondary pulley, the belt type continuously variable transmission changes its speed corresponding to a torque transmission direction and normal and reverse rotation directions. When axial forces of the primary and secondary pulleys become equal, then the belt type continuously variable transmission self-converges so that the output shaft has zero rotation and is stably held at the neutral position without a driving starter device and without a normal and reverse rotation switching device.

    摘要翻译: 带式无级变速器(CVT)和行星齿轮单元组合在用于汽车的无级变速器系统中,在输出轴的正反方向输出中间位置。 具有液压回路的控制机构控制一级和二级液压伺服系统的液压,以控制施加到带式无级变速器的相应主级和次级滑轮的轴向力。 当初级带轮和次级带轮之间产生轴向力差时,带式无级变速器根据转矩传递方向和正向和反向旋转方向改变其速度。 当初级和次级滑轮的轴向力相等时,皮带式无级变速器自身会聚,使得输出轴具有零旋转,并且在没有驱动启动装置的情况下稳定地保持在中立位置,并且没有正常和反向旋转 开关装置。

    Continuously variable transmission with control of switching between
forward and reverse
    2.
    发明授权
    Continuously variable transmission with control of switching between forward and reverse 失效
    连续可变传动,控制前后转换

    公开(公告)号:US5690576A

    公开(公告)日:1997-11-25

    申请号:US620226

    申请日:1996-03-22

    IPC分类号: F16H37/08 F16H61/662 F16H9/26

    摘要: A continuously variable transmission system includes a belt type continuously variable transmission unit which, in turn, is composed of a primary pulley and a secondary pulley wherein the torque transmitting direction is switched by torque circulation in changeover between forward and reverse travel. When a low mode is selected in a D range, a somewhat higher hydraulic pressure from a regulator valve is supplied, through a manual valve, to a secondary hydraulic servo, which moves one sheave of the secondary pulley, and a somewhat lower hydraulic pressure from a ratio control valve is supplied to a primary hydraulic servo which moves one sheave of the primary pulley. When the D range is switched to R range by the manual valve, the supplies of the above hydraulic pressures are reversed. With this arrangement, the relative axial forces on the pulleys are changed in switching between forward and reverse travel.

    摘要翻译: 无级变速器系统包括带式无级变速器单元,该传动单元又由初级带轮和次级带轮组成,其中扭矩传递方向由前进和后退行驶之间的转换中的转矩循环切换。 当在D范围内选择低模式时,来自调节阀的稍高的液压通过手动阀被供应到辅助液压伺服机构,该液压伺服机构使次滑轮的一个滑轮移动,并且稍低的液压从 比率控制阀被供给到主滑轮的一个滑轮的主液压伺服系统。 当通过手动阀将D档切换到R档时,上述液压的供给相反。 通过这种布置,在前进和后退行驶之间切换中,滑轮上的相对轴向力被改变。

    Continuously variable transmission
    4.
    发明授权
    Continuously variable transmission 失效
    连续可变传动

    公开(公告)号:US5846152A

    公开(公告)日:1998-12-08

    申请号:US755474

    申请日:1996-11-22

    IPC分类号: F16H9/26 F16H37/02 F16H37/08

    CPC分类号: F16H37/0846 F16H2037/088

    摘要: A transmission unit includes a belt type continuously variable transmission (CVT) having a first pulley arranged on a first shaft with a stationary sheave, a movable sheave and a hydraulic actuator for the movable sheave. The second pulley of the CVT is mounted on a second shaft and also has a stationary sheave, a movable sheave and a hydraulic actuator. A belt is mounted around the first and second pulleys. The transmission unit further includes a synchronous transmission for connecting a first rotary member arranged on the first shaft and a second rotary member arranged on the second shaft at a constant speed ratio, an output gear for transmitting power to the wheels and a planetary gear unit. The planetary gear unit is mounted on the second shaft and includes at least first, second and third rotary elements. The first rotary element is connected to the second rotary member, the second rotary element to the second pulley, and the third rotary element to the output gear. The first shaft is connected through the CVT to the second rotary element and through the synchronous transmission to the first rotary element. The hydraulic actuators are arranged on opposite sides of the belt.

    摘要翻译: 传动单元包括带式无级变速器(CVT),其具有布置在具有固定滑轮的第一轴上的第一滑轮,可动滑轮和用于可动滑轮的液压致动器。 CVT的第二滑轮安装在第二轴上,并且还具有固定滑轮,可动滑轮和液压致动器。 皮带安装在第一和第二滑轮周围。 传动单元还包括用于连接布置在第一轴上的第一旋转构件和以恒定速比配置在第二轴上的第二旋转构件的同步变速器,用于向车轮传递动力的输出齿轮和行星齿轮单元。 行星齿轮单元安装在第二轴上并且包括至少第一,第二和第三旋转元件。 第一旋转元件连接到第二旋转构件,第二旋转元件连接到第二滑轮,并且第三旋转元件连接到输出齿轮。 第一轴通过CVT连接到第二旋转元件,并通过同步传动装置连接到第一旋转元件。 液压致动器布置在带的相对侧上。

    Infinitely variable transmission
    5.
    发明授权
    Infinitely variable transmission 失效
    无级变速器

    公开(公告)号:US5961418A

    公开(公告)日:1999-10-05

    申请号:US957772

    申请日:1997-10-24

    摘要: An infinitely variable transmission has a gear neutral (GN) point and serves as an output member by torque circulation. When a pulley ratio thereof is within a predetermined range from the GN point, a coasting state occurs which may hinder smooth torque transmission based on the transmission efficiency and generate a great engine braking effect (failure in the transmission resulting from the coasting state) based on a large gear ratio. When the pulley ratio assumes a predetermined value that may cause failure in transmission resulting from the coasting state, upon release of the accelerator pedal, an electronic throttle system performs control such that the engine outputs a predetermined torque. Thus a positive driving state is always established. In this state, the continuously variable transmission (CVT) is shifted in the upshift direction to escape rapidly from a range defined by the pulley ratio of the predetermined value.

    摘要翻译: 无级变速器具有齿轮中性点(GN),通过扭矩循环作为输出部件。 当其比率在GN点以上的预定范围内时,会发生滑行状态,这可能会阻碍基于传动效率的平稳转矩传递,并且基于以下原因产生很大的发动机制动效果(由于惯性滑行状态导致的变速器失效) 大齿轮比。 当滑轮比例成为可能导致由于滑行状态导致的变速器失灵的预定值时,在释放加速踏板时,电子节气门系统进行控制,使得发动机输出预定的转矩。 因此,始终建立积极的行车状态。 在这种状态下,无级变速器(CVT)在升档方向上移动,从预定值的滑轮比限定的范围内迅速逃逸。

    Automatic transmission for vehicle
    8.
    发明授权
    Automatic transmission for vehicle 失效
    汽车自动变速箱

    公开(公告)号:US5683325A

    公开(公告)日:1997-11-04

    申请号:US620191

    申请日:1996-03-22

    IPC分类号: F16H3/62 F16H3/66 F16H3/00

    摘要: A 5-speed automatic transmission for a vehicle having a highly efficient top gear, a compact construction and a wide overall range of gear ratios. The automatic transmission has a speed changer which provides five gear stages, namely two speeds on the speed decreasing side and two speeds on the speed increasing side with a direct-coupled gear therebetween. The speed changer includes a ring gear connected to an output shaft, a first carrier, a first sun gear, a second carrier connected to the first carrier, a stepped pinion gear supported by these two carriers, and a sun gear meshing with the pinion gear. The first carrier is connected to an input shaft by a clutch and the first sun gear is connected to the input shaft by a clutch. The first sun gear may be stopped by a first brake, a second brake stops the second sun gear and a third brake is provided to stop a third sun gear. Top gear is achieved by meshing of the pinion gear with the second sun gear and the ring gear. Top gear is thus achieved with the equivalent of only one planetary gear set of intermeshing elements and without loss of efficiency. Also, the arrangement of the three planetary gear sets of the transmission is such that one planetary gear set can be easily removed to make a 4-speed transmission derived from the 5-speed transmission of the invention.

    摘要翻译: 一种具有高效顶级齿轮,紧凑结构和宽范围传动比的车辆的5速自动变速器。 自动变速器具有变速器,其提供五个档位,即减速侧的两个速度和增速侧的两个速度,其间具有直联齿轮。 变速器包括连接到输出轴的环形齿轮,第一行星架,第一太阳齿轮,连接到第一行星架的第二行星架,由这两个行星架支撑的阶梯式小齿轮,以及与小齿轮啮合的太阳齿轮 。 第一行星架通过离合器连接到输入轴,第一太阳齿轮通过离合器连接到输入轴。 第一太阳齿轮可以通过第一制动器停止,第二制动器停止第二太阳齿轮,并且提供第三制动器以停止第三太阳齿轮。 顶齿轮通过小齿轮与第二太阳齿轮和齿圈啮合来实现。 因此,顶齿轮相当于仅有一个行星齿轮组的啮合元件并且不失去效率。 此外,变速器的三个行星齿轮组的布置使得能够容易地移除一个行星齿轮组,以形成源自本发明的5速变速器的4速变速器。

    Automatic transmission for vehicles
    9.
    发明授权
    Automatic transmission for vehicles 失效
    汽车自动变速器

    公开(公告)号:US5735376A

    公开(公告)日:1998-04-07

    申请号:US621033

    申请日:1996-03-22

    摘要: A vehicular automatic transmission, for establishing a plurality of forward gear stages, includes: a transmission case; an input shaft; a transmission mechanism connected to the input shaft and including a plurality of transmission elements; an output shaft connected to the transmission mechanism; a clutch drivably connecting any one of the input shaft and the transmission elements individually; and a hydraulic servo for applying the clutch responsive to an oil pressure. The transmission case encloses the transmission mechanism, the clutch and the hydraulic servo, and includes axial end walls, on one of which is formed a stationary cylinder for the hydraulic servo. A piston is slidably mounted in the cylinder and together with the cylinder, defines an oil chamber for receipt of the actuating oil pressure. A bearing is arranged between the piston and the clutch for transmitting the thrust force from the piston to the clutch, while allowing relative rotation between the piston and the clutch. The clutch includes a hub with an outer cylindrical surface splined to a friction plate assembly and a rim radially spaced from the hub with the friction plate assembly splined to its inner cylindrical surface. The input shaft is connected to the hub whereas one of the transmission elements is connected to the rim.

    摘要翻译: 一种用于建立多个前进档位的车辆自动变速器,包括:变速箱; 输入轴; 连接到所述输入轴并且包括多个传动元件的传动机构; 连接到传动机构的输出轴; 分别驱动地连接输入轴和传动元件中的任一个的离合器; 以及用于响应于油压而施加离合器的液压伺服机构。 传动箱包围传动机构,离合器和液压伺服机构,并且包括轴向端壁,其中一个壁形成液压伺服机构的静止气缸。 活塞可滑动地安装在气缸中并与气缸一起形成用于接收致动油压力的油室。 在活塞和离合器之间布置有用于将推力从活塞传递到离合器的轴承,同时允许活塞和离合器之间的相对旋转。 离合器包括具有花键连接到摩擦板组件的外圆柱形表面的轮毂和与轮毂径向间隔开的边缘,摩擦板组件花键连接到其内圆柱形表面。 输入轴连接到轮毂,而其中一个传动元件连接到轮辋。

    Vehicular automatic transmission
    10.
    发明授权
    Vehicular automatic transmission 失效
    车载自动变速器

    公开(公告)号:US5876300A

    公开(公告)日:1999-03-02

    申请号:US873014

    申请日:1997-06-11

    IPC分类号: F16H3/66

    摘要: A vehicular automatic transmission for establishing a plurality of forward gear stages, includes: a transmission case; an input shaft; a transmission mechanism connected to the input shaft and including a plurality of transmission elements; an output shaft connected to the transmission mechanism; first and second clutches at opposite ends of the transmission mechanism and drivably connecting the input shaft with at least one of the transmission elements; and first and second hydraulic servos for applying the first and second clutches responsive to feed of an oil pressure. The transmission case encloses the transmission mechanism, the clutches and the hydraulic servos, and includes axial end walls forming cylinders for the hydraulic servos. First and second bearings are arranged between the pistons of the hydraulic servos and the first and second clutches, respectively, for allowing the relative rotation between the pistons and the clutches and for transmitting the thrust forces from the pistons to the respective clutches.

    摘要翻译: 一种用于建立多个前进档位的车辆用自动变速器,包括:变速箱; 输入轴; 连接到所述输入轴并且包括多个传动元件的传动机构; 连接到传动机构的输出轴; 第一离合器和第二离合器,其在传动机构的相对端处可驱动地将输入轴与至少一个传动元件连接; 以及用于响应于油压的进给而施加第一和第二离合器的第一和第二液压伺服机构。 变速器壳体包围传动机构,离合器和液压伺服机构,并包括形成液压伺服机构的轴向端壁。 第一和第二轴承分别布置在液压伺服机构的活塞和第一和第二离合器之间,用于允许活塞和离合器之间的相对旋转,并将推力从活塞传递到相应的离合器。