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    • 1. 发明授权
    • Method of controlling speed changes in hydraulically actuated type
multiple-stage speed change gear
    • 控制液压致动式多级变速齿轮变速的方法
    • US5265499A
    • 1993-11-30
    • US876700
    • 1992-04-29
    • Kohei SokaKiyoshi KanekoYasunori OkuraTakeo Kato
    • Kohei SokaKiyoshi KanekoYasunori OkuraTakeo Kato
    • F16H59/70F16H61/10F16H61/14B60K41/06
    • F16H61/10F16H61/143F16H2061/146F16H59/70Y10T477/6351
    • A method of controlling speed changes in a hydraulically actuated type multiple-stage speed change gear, which renders it possible to prevent the occurrence of "shift hunting" without impairing the acceleration characteristics of the vehicle and also reduce the magnitude of shocks which occur at the time of speed changes even in case hydraulic clutches of small capacity are used. According to this method of controlling speed changes, a controller (30) is used to conduct speed changes when conditions for speed changes, i.e., upshift/downshift are satisfied, and in cases where a downshift is made after an upshift and an upshift is made after a downshift, speed changes are conducted after the lapse of a long speed change inhibiting time, and in other cases than the aforementioned, speed changes are conducted after the lapse of a short speed change inhibiting time. Further, only in case the vehicle is decelerated from a high speed stage to a coasting speed, deceleration operations are conducted with a direct coupled clutch (8) of the torque converter (3) kept in engaged condition, and in other cases than the aforementioned, speed changes are conducted with the direct coupled clutch kept in released condition.
    • 一种控制液压致动型多级变速齿轮速度变化的方法,其可以防止“换档”的发生而不损害车辆的加速特性,并且还可以减小在 即使使用小容量的液压离合器,速度变化也是如此。 根据这种控制速度变化的方法,当满足速度变化的条件(即升档/降档)时,使用控制器(30)进行速度变化,并且在升档和升档之后进行降档的情况下 在降档之后,在经过长时间变化抑制时间之后进行速度变化,并且在其他情况下,在经过短时间变化抑制时间之后进行速度变化。 此外,仅在车辆从高速档位减速到滑行速度的情况下,通过变矩器(3)的直接联接离合器(8)保持接合状态进行减速操作,在其他情况下, ,直接耦合离合器保持在释放状态下进行速度变化。
    • 2. 发明授权
    • Method and apparatus for controlling transmission system
    • 控制传动系统的方法和装置
    • US5231898A
    • 1993-08-03
    • US965622
    • 1992-10-22
    • Yasunori Okura
    • Yasunori Okura
    • F16H59/18F16H59/54F16H59/68F16H61/00F16H61/02F16H61/06F16H63/44
    • F16H61/061F16H63/44F16H2059/6807F16H2061/0096F16H2061/0258F16H59/18F16H59/54Y10T477/648
    • In a configuration in which electronically operated pressure control valves (31-36) are respectively connected to clutches of a two-stage transmission (3) composed of main transmissions (1st, 2nd, R, 4th, 3rd) and sub transmissions (L, H), when a downshift is effected from a present speed stage to a next speed stage with power on, the supply of oil pressure to a speed-changing clutch for the present speed stage is stopped on the basis of a speed-change command, the pressure control valve is actuated when a relative number of revolutions of the speed-changing clutch for the next speed stage becomes zero, which commences the supply of oil pressure to that speed-changing clutch, and the supply of oil pressure is gradually increased upon confirming the completion of a filling time of the speed-changing clutch. Thus discomfort owing to a speed-change shock is prevented in whatever state the amount of an accelerator operated and the state of operation of a brake are.In addition, in a downshift accompanying the operation of clutches of both transmissions, torque off time is not provided for the sub transmission clutch, and the supply of oil pressure to a next stage clutch is commenced immediately so as to supply oil pressure at a gradually increasing rate. After engagement of the clutch, the supply of oil pressure to the main transmission clutch at a gradually increasing rate is effected upon completion of the filling time, thereby preventing discomfort attributable to a speed-change shock.
    • 在电动压力控制阀(31-36)分别连接到由主变速器(1st,2nd,R,4th,3)和副变速器(L,S)组成的两级变速器(3)的离合器的构造中, H),当从当前速度级到下一个加电阶段的降档进行降档时,根据变速指令停止向当前速度级的变速离合器供给油压, 当下一个速度级的变速离合器的相对转数为零时,压力控制阀被致动,开始向该变速离合器供给油压,并且随着油压的供给逐渐增加 确认变速离合器的填充时间的完成。 因此,在加速器的操作量和制动器的操作状态的任何状态下,防止由于变速冲击而引起的不适。 此外,在与两个变速器的离合器的操作相伴随的换档中,没有为副变速器离合器设置转矩关闭时间,并且立即开始向下一级离合器供给油压,以逐渐地供给油压 增长率。 在离合器接合之后,在完成填充时间后,以逐渐增加的速度向主变速器离合器供给油压,从而防止由于变速冲击引起的不适。