Speed stage shifting of automatic transmission by reduction of servo oil
pressure to slip limit stand-by pressure and subsequent decrements
    81.
    发明授权
    Speed stage shifting of automatic transmission by reduction of servo oil pressure to slip limit stand-by pressure and subsequent decrements 失效
    通过减少伺服油压到滑差极限待机压力和随后的减量,自动变速器的转速级换档

    公开(公告)号:US5363724A

    公开(公告)日:1994-11-15

    申请号:US952981

    申请日:1992-09-29

    摘要: In a certain speed stage shifting of an automatic transmission of a vehicle including a speed change gear mechanism including rotary members such as gears and gear carriers and hydraulically operated friction engaging brakes and clutches adapted to provide various speed stages according to selective engagement and disengagement of the friction engaging brakes and clutches, the servo oil pressure of a first friction engaging brake is immediately lowered down to a stand-by pressure marginally higher than a threshold pressure bordering non sliding and sliding of the first friction engaging brake at the start of a change-over of a second friction engaging brake is and then, when a substantial change-over of the second friction engaging means started, the servo oil pressure is further lowered across the threshold pressure and thereafter periodically lowered by a decrement the magnitude of which may desirably be increased along with a lapse of time.

    摘要翻译: 在包括包括诸如齿轮和齿轮架的旋转构件的变速齿轮机构的车辆的自动变速器的特定速度级变速器中,以及液压操作的摩擦接合制动器和离合器,其适于根据所选择的接合和分离来提供各种速度级 摩擦接合制动器和离合器,第一摩擦接合制动器的伺服油压力立即降低到稍微高于在变速开始时第一摩擦接合制动器的非滑动和滑动的阈值压力的待机压力, 然后在第二摩擦接合装置的实质切换开始时,伺服油压力进一步降低超过阈值压力,然后周期性地减小减小量,其量值可能期望地为 随着时间的推移而增加。

    Shift control system for selecting between two shift patterns based on
the transmission temperature and lock-up clutch state in an automatic
transmission
    82.
    发明授权
    Shift control system for selecting between two shift patterns based on the transmission temperature and lock-up clutch state in an automatic transmission 失效
    换档控制系统,用于根据自动变速器中的变速器温度和锁止离合器状态在两个变速档位之间进行选择

    公开(公告)号:US5347885A

    公开(公告)日:1994-09-20

    申请号:US889287

    申请日:1992-05-28

    摘要: A shift control system controls an automatic transmission of a vehicle wherein half-lock-up control for a lock-up clutch is executed when the running state of the vehicle is in a predetermined operative range. The shift control system includes a half-lock-up control inhibiting unit for inhibiting the half-lock-up control from being executed when the running state of the vehicle is held in a specific operative state even though the running state of the vehicle is in the predetermined range, a determining unit for determining whether or not the half-lock-up control is inhibited by the half-lock-up control inhibiting means, and a controlling unit for controlling the automatic transmission such that a low speed stage at which the half-lock-up control is easily executed is positively utilized when it is determined that the half-lock-up control is not inhibited by the determining unit, and moreover, controlling shift change of the automatic transmission such that a high speed stage having a gear ratio lower than that at the lower speed stage is positively utilized when it is determined that the half-lock-up control is inhibited by the determining unit.

    摘要翻译: 变速控制系统控制车辆的自动变速器,其中当车辆的行驶状态处于预定的操作范围时,执行用于锁止离合器的半锁定控制。 变速控制系统包括半停止控制禁止单元,用于当车辆的行驶状态保持在特定操作状态时,即使车辆的行驶状态处于特定操作状态,也可以禁止执行半锁定控制 所述预定范围,用于确定所述半锁定控制禁止装置是否禁止所述半锁定控制的确定单元,以及用于控制所述自动变速器的控制单元, 当确定该半锁定控制不被确定单元禁止时,积极地利用半锁定控制,此外,控制自动变速器的换档变化,使得具有 当确定半锁定控制被确定单元禁止时,正确地利用低于低速级的齿轮比。

    Five-speed automatic transmission
    83.
    发明授权
    Five-speed automatic transmission 失效
    五速自动变速箱

    公开(公告)号:US5254053A

    公开(公告)日:1993-10-19

    申请号:US964631

    申请日:1992-10-23

    IPC分类号: F16H3/62 F16H3/44 F16H3/66

    CPC分类号: F16H3/66 F16H2200/0047

    摘要: A five-speed automatic transmission includes a main transmission and an over-drive transmission of a front disposition type. The main transmission includes three sets of planetary gears, a clutch for engaging and disengaging speed-change elements of the planetary gear sets, and a brake for fixing and releasing the speed change elements, and provides for four forward speed ranges and one reverse speed range. In the over-drive transmission of a front disposition type, a speed change element of an over-drive planetary gear set connected to an input element of the main transmission is adapted to be engaged, disengaged and fixed for achieving either a directly coupled stage or an over-drive stage. The over-drive transmission releases the direct coupling for reverse driving operation. One of the clutches of the main transmission for achieving the directly coupled stage and one of the brakes for achieving the low speed stage are engageable in the reverse driving operation.

    摘要翻译: 五速自动变速器包括主变速器和前部配置型的过驱动变速器。 主变速器包括三组行星齿轮,用于接合和分离行星齿轮组的变速元件的离合器和用于固定和释放变速元件的制动器,并且提供四个前进速度范围和一个倒档速度范围 。 在前部配置型的过驱动传动中,连接到主变速器的输入元件的过驱动行星齿轮组的变速元件适于接合,分离和固定,以实现直接耦合的级或 过驱动阶段。 过驱动传动释放用于反向驱动操作的直接联接。 用于实现直接耦合级的主变速器的离合器之一和用于实现低速级的制动器之一可接合于反向驱动操作。

    Shift control system and method for automatic transmission of vehicles
    85.
    发明授权
    Shift control system and method for automatic transmission of vehicles 失效
    车辆自动变速器变速控制系统及方法

    公开(公告)号:US5133229A

    公开(公告)日:1992-07-28

    申请号:US655845

    申请日:1991-02-14

    摘要: A shift control system for use in an automatic transmission having a gear train to be set to a plurality of gear stages of different gear ratios in accordance with the engagement/release states of a plurality of fricitional engagement devices. The gear train is enabled to set a predetermined gear stage in accordance with plural kinds of combination of the engagement/release of the frictional engagement devices. The shift control system comprises: an input torque detector for detecting input torque to be inputted to the gear train; a torque evaluator for evaluating the level of the input torque; and an engagement/release pattern selector for selecting the combination of engagement/release of the frictional engagement devices for setting the predetermined gear stage, on the basis of the result of the input torque evaluated by the torque evaluator.

    摘要翻译: 一种用于自动变速器的变速控制系统,其具有根据多个摩擦接合装置的接合/释放状态将齿轮系设定为具有不同齿轮比的多个齿轮级。 齿轮系能够根据摩擦接合装置的接合/释放的多种组合来设定预定的齿轮级。 变速控制系统包括:输入转矩检测器,用于检测输入到齿轮系的输入转矩; 用于评估输入转矩水平的扭矩评估器; 以及接合/释放模式选择器,用于基于由扭矩评估器评估的输入转矩的结果来选择用于设定预定齿轮级的摩擦接合装置的接合/释放的组合。

    Shift control system and method for automatic transmission
    86.
    发明授权
    Shift control system and method for automatic transmission 失效
    换档控制系统及自动变速箱方法

    公开(公告)号:US5129287A

    公开(公告)日:1992-07-14

    申请号:US631409

    申请日:1990-12-21

    IPC分类号: F16H3/66 F16H61/12 F16H63/12

    摘要: A shift control system for use in an automatic transmission which comprises: a plurality of frictional engagement components; and a gear train adapted to set a plurality of speed stages having different gear ratios in accordance with the combination for engagement/release of the frictional engagement components and enabled to select a combination for engaging and releasing any of the frictional engagement components as that for engagement/release of the frictional engagement components for setting any of the speed stages. The shift control system comprises: a detector for detecting the engagement failure of the frictional engagement components; an engagement/release pattern selector for selecting a combination for releasing any one of the frictional engagement components as the combinations for engagement/release of the frictional engagement components for setting any one of the speed stages, if the engagement failure of any one of the frictional engagement components is detected; and an output device for outputting an instruction signal for setting the selected combination for engagement/release of the frictional engagement components.

    摘要翻译: 一种用于自动变速器的变速控制系统,包括:多个摩擦接合部件; 以及齿轮系,其适于根据用于摩擦接合部件的接合/释放的组合来设定具有不同齿轮比的多个速度级,并且能够选择用于接合和释放任何摩擦接合部件的组合,如用于接合 /释放用于设定任何速度级的摩擦接合部件。 变速控制系统包括:用于检测摩擦接合部件的接合故障的检测器; 用于选择用于释放任何一个摩擦接合部件的组合的接合/释放模式选择器,作为用于设置任何一个速度级的摩擦接合部件的接合/释放的组合,如果任何一个摩擦接合部件的摩擦接合部件的接合故障 检测到接合部件; 以及输出装置,用于输出用于设定所选择的组合以用于摩擦接合部件的接合/释放的指令信号。

    Hydraulic control device of automatic transmission more smooth in low
coast upshifting under under-D manual shift range
    87.
    发明授权
    Hydraulic control device of automatic transmission more smooth in low coast upshifting under under-D manual shift range 失效
    自动变速器液压控制装置在D档手动变速范围内的低档升档中更加平滑

    公开(公告)号:US5113725A

    公开(公告)日:1992-05-19

    申请号:US584784

    申请日:1990-09-19

    IPC分类号: F16H61/02 F16H61/04 F16H61/21

    摘要: A hydraulic control device is provided for automatic transmission in a vehicle such as an automobile. The transmission includes a combination of a gear mechanism and friction engaging devices which allows engagement of a particular first speed stage, such as first gear, and a particular second speed stage, such as second gear, according to selective engagement and disengagement of the friction engaging devices. Engine braking is not provided in the first speed stage, but is provided in the second speed stage when an under-D range is selected by the manual shift valve. Low coast upshifting is thus performed more smoothly. The shift from the first speed stage to the second speed stage is also completed more slowly than any other shift.

    摘要翻译: 提供了一种液压控制装置,用于诸如汽车的车辆中的自动变速器。 变速器包括齿轮机构和摩擦接合装置的组合,其允许根据摩擦接合的选择性接合和分离,允许特定的第一速度档,例如第一档和特定的第二速度档,例如第二档啮合 设备。 在第一速度级中不设置发动机制动,而是在通过手动换档阀选择了低于D档的范围时,设置在第二档位。 因此,进行较为平稳的低岸升档。 从第一速度阶段到第二速度阶段的转变也比任何其他班次慢得多。