Control for belt-type continuously-variable transmission
    1.
    发明授权
    Control for belt-type continuously-variable transmission 有权
    皮带式无级变速器控制

    公开(公告)号:US07140990B2

    公开(公告)日:2006-11-28

    申请号:US10674069

    申请日:2003-09-30

    IPC分类号: F16H61/06 B60K41/12

    摘要: In a belt drive continuously-variable transmission control apparatus, a line pressure control section controls a line pressure to be supplied to a shift control valve for controlling a fluid pressure to a primary pulley, and a secondary pulley, in accordance with an estimated input torque to the continuously-variable transmission, and an input torque estimating section to determine the estimated input torque in accordance with a speed ratio and a torque ratio of the torque converter. The input torque estimating section includes a speed ratio monitoring subsection to examine whether the speed ratio is in an increasing state; and a torque ratio setting subsection to decrease the torque ratio when the speed ratio is in the increasing state.

    摘要翻译: 在带式无级变速器传动控制装置中,线路压力控制部根据估计的输入转矩来控制供给到变速控制阀的管路压力,该变速控制阀用于控制对初级带轮和次级带轮的流体压力 以及输入转矩估计部,用于根据变矩器的转速比和转矩比来确定估计输入转矩。 输入转矩估计部分包括速比监视部分,以检查速比是否处于增加状态; 以及当速比处于增加状态时减小扭矩比的扭矩比设定子部。

    Lock-up control system for torque converter

    公开(公告)号:US06663533B2

    公开(公告)日:2003-12-16

    申请号:US10126314

    申请日:2002-04-18

    IPC分类号: F16H6114

    摘要: A lock-up control system for a torque converter which includes a lock-up clutch engageable under control of an engaging capacity of the lock-up clutch to thereby lock up input and output elements of the torque converter. The control system is operative during coasting in a lock-up region requiring engagement of the lock-up clutch, so as to bring the engaging capacity of the lock-up clutch to a coast lockup capacity smaller than a lock-up capacity under a driving condition at the same vehicle speed. The control system is further operative when an engine braking range is selected during coasting in the lock-up region, so as to bring the engaging capacity of the lock-up clutch to a value greater than the coast lock-up capacity, preferably to a controlling maximum value.

    Shift control system in belt-type continuously variable transmission
    4.
    发明授权
    Shift control system in belt-type continuously variable transmission 有权
    带式无级变速器变速控制系统

    公开(公告)号:US07651422B2

    公开(公告)日:2010-01-26

    申请号:US10788720

    申请日:2004-02-27

    IPC分类号: F16H61/00

    摘要: When a speed of a vehicle is less than 8 km/h, an upshift determination condition is established, an idle switch signal is turned off, and a downshift is detected, an operating speed of the step motor is limited. Thereby, since the operating speed of the step motor is limited even when the vehicle is rapidly decelerated and re-accelerated before a pulley ratio is returned to a lowest value Lo, a shift speed of the downshift performed in the re-acceleration is lowered, and no slippage occurs in a V-belt between pulleys.

    摘要翻译: 当车辆速度小于8km / h时,建立升档判定条件,关闭怠速开关信号,检测到降档,则步进电动机的运转速度受到限制。 因此,由于即使在滑轮比返回到最低值Lo之前车辆快速减速再加速的情况下,由于步进马达的运转速度受到限制,所以在再加速度中进行的降档的换档速度降低, 在皮带轮之间的V形皮带中不会发生滑动。