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    • 9. 发明申请
    • LOCKUP CLUTCH CONTROL APPARATUS AND METHOD
    • 锁定离合器控制装置和方法
    • WO1988009454A1
    • 1988-12-01
    • PCT/JP1988000485
    • 1988-05-23
    • KABUSHIKI KAISHA KOMATSU SEISAKUSHOASAYAMA, YoshioTSUBOTA, MakioOKURA, YasunoriSATO, Takayuki
    • KABUSHIKI KAISHA KOMATSU SEISAKUSHO
    • F16H45/02
    • F16H61/143F16H59/02F16H59/24F16H59/40F16H59/52F16H59/70F16H61/70F16H2059/385F16H2059/6807F16H2061/0096F16H2061/0209F16H2061/0258F16H2061/145F16H2061/146Y10T74/19163Y10T477/6351Y10T477/63525
    • An electronic pressure control valve (40) is connected to a lockup clutch (4) directly connected to input/output shafts (1a, 2a) of a torque converter (2). In order to change the speed, the lockup clutch (4) is disconnected when the filling of transmission clutches (21-24) to be engaged next has been finished, to prevent the nonavailability of torque. With respect to the lockup clutch (4) in which an inner pressure (Pt) of the torque converter is applied to a back pressure portion of a piston, the inner pressure of the torque converter (2) is applied to the side of a proportional solenoid (42) of the pressure control valve (40), to enable an initial pressure to decrease. During a speed changing operation, the lockup clutch (4) is not completely disconnected to maintain the low pressure, whereby a shock due to the lockup clutch shifting operation is lessened. In order to gradually increase the hydraulic pressure, a degree of opening of a throttle, the weight of the vehicle and a gear ratio are determined, and a rate of gradual increase is varied in accordance with these values. In order to drive the vehicle at a regular speed, the hydraulic pressure in the lockup clutch is controlled so that it is in the vicinity of the level of the engine output torque, to thereby widen the region of travelling with the lockup clutch used.
    • 电子压力控制阀40连接到直接连接到变矩器(2)的输入/输出轴(1a,2a)的锁止离合器(4)。 为了改变速度,当接下来要接合的变速器离合器(21-24)的填充已经完成时,锁止离合器(4)被断开,以防止扭矩不可用。 关于将变矩器的内部压力(Pt)施加到活塞的背压部的锁止离合器(4),将变矩器(2)的内部压力施加到比例侧 压力控制阀(40)的螺线管(42),以使初始压力降低。 在变速操作期间,锁止离合器(4)没有完全断开以保持低压,从而减少了由于锁止离合器变速操作引起的冲击。 为了逐渐增加液压,确定节流阀的开度,车辆的重量和齿轮比,并且逐渐增加的速度根据这些值而变化。 为了以规律的速度驱动车辆,控制锁止离合器中的液压,使其处于发动机输出转矩水平附近,从而扩大使用的锁止离合器的行驶区域。