Six-speed powertrain of an automatic transmission
    2.
    发明授权
    Six-speed powertrain of an automatic transmission 有权
    六速动力传动系自动变速器

    公开(公告)号:US07377873B2

    公开(公告)日:2008-05-27

    申请号:US11302065

    申请日:2005-12-12

    IPC分类号: F16H3/44

    摘要: Six forward speeds and one reverse speed may be realized with minimized length and weight of the transmission by employing two single pinion planetary gear sets and a double pinion planetary gear set. One planetary gear of the double pinion planetary gear set is interconnected with an adjacent second planetary gear of the second single pinion planetary gear set by a common planet carrier such that they may rotate independently, and at the same time, at least two ring gears are integrated so as to enhance strength in the axial direction.

    摘要翻译: 通过采用两个单小齿轮行星齿轮组和双小齿轮行星齿轮组,可以最小化变速器的长度和重量来实现六个前进速度和一个倒车速度。 双小齿轮行星齿轮组的一个行星齿轮通过共同的行星架与第二单小齿轮行星齿轮组的相邻的第二行星齿轮互连,使得它们可以独立地旋转,并且同时至少两个齿圈是 一体化,以提高轴向强度。

    Shift control for a two-axis automatic transmission for a vehicle
    6.
    发明授权
    Shift control for a two-axis automatic transmission for a vehicle 失效
    用于车辆的双轴自动变速箱的换档控制

    公开(公告)号:US06966861B2

    公开(公告)日:2005-11-22

    申请号:US10656944

    申请日:2003-09-05

    摘要: A shift control method for an automatic transmission having a primary shift portion and a secondary shift portion is provided that comprises: starting, if a shift signal is output, a shift in the secondary shift portion, and then starting a shift in the primary shift portion; performing feedback control of duty ratios of friction element solenoids for the primary shift portion with a goal of approaching a change rate of a difference between an input speed and an output speed of the primary shift portion to a first target speed change rate, and simultaneously performing feedback control of duty ratios of friction element solenoids for the secondary shift portion with a goal of approaching a change rate of a turbine speed to a second target speed change rate; and completing the shift in the primary shift portion, and then completing the shift in the secondary shift portion.

    摘要翻译: 提供了一种具有一次换挡部分和副换档部分的自动变速器的变速控制方法,包括:如果输出换档信号,则启动副变速部分的换档,然后开始主变速部分的换档 ; 对主变速部分的摩擦元件螺线管的占空比进行反馈控制,目标是将主变速部分的输入速度与输出速度之间的差的变化率接近第一目标变速率,同时执行 反馈控制用于副变速部分的摩擦元件螺线管的占空比,目标是将涡轮转速的变化率接近第二目标变速率; 并且完成主换档部分中的换档,然后完成副换档部分中的换档。