公开(公告)号：US07318789B2

公开(公告)日：2008-01-15

申请号：US11092043

申请日：2005-03-29

申请人： Yuuji Saitou ,  Masahiro Iwanabe

发明人： Yuuji Saitou ,  Masahiro Iwanabe

IPC分类号： F16H61/00 ,  G06F7/00

CPC分类号： F16H61/061 ,  F16H61/686 ,  F16H2061/0087 ,  F16H2200/0043 ,  F16H2200/2007 ,  F16H2306/52 ,  Y10T477/6937 ,  Y10T477/6939

摘要： An automatic transmission has an electronic control unit and a hydraulic control unit. The electronic control unit outputs an engagement command pressure to a solenoid disposed in a hydraulic control unit to generate a shelf pressure to upshift the automatic transmission. The engagement command pressure is corrected downwardly when the maximum rate of the gear ratio change is larger than the rate of change of a thrust-up determination gear ratio, and upwardly when the maximum rate of the gear ratio change is smaller than the rate change of a prolongation determination gear ratio. By correcting the engagement command pressure using the maximum rate of the gear ratio change, a proper output shaft torque wave form can be obtained so that a fluctuation of an output shaft torque during a torque phase while upshifting has no strong influence on the acceleration of a vehicle to achieve a comfortable shift feeling.

摘要翻译： 自动变速器具有电子控制单元和液压控制单元。 电子控制单元向布置在液压控制单元中的螺线管输出接合指令压力，以产生升档自动变速器的搁板压力。 当齿轮比变化的最大速率大于上推判定传动比的变化率时，接合指令压力向下修正，当传动比变化的最大速率小于 延长确定传动比。 通过使用变速比变化的最大速率来修正接合指令压力，可以获得适当的输出轴转矩波形，使得升档时转矩阶段期间的输出轴转矩的波动对加速度 车辆实现舒适的换档感觉。

公开(公告)号：US20050221956A1

公开(公告)日：2005-10-06

申请号：US11092043

申请日：2005-03-29

申请人： Yuuji Saitou ,  Masahiro Iwanabe

发明人： Yuuji Saitou ,  Masahiro Iwanabe

IPC分类号： F16H61/00 ,  F16H61/06 ,  F16H61/26 ,  F16H61/686

CPC分类号： F16H61/061 ,  F16H61/686 ,  F16H2061/0087 ,  F16H2200/0043 ,  F16H2200/2007 ,  F16H2306/52 ,  Y10T477/6937 ,  Y10T477/6939

摘要： An automatic transmission comprises an electronic control unit and a hydraulic control unit. The electronic control unit commands an engagement command pressure to a solenoid disposed in a hydraulic control unit until the time engagement element pressure generated by the solenoid reaches to a shelf pressure, thereby an upshift of the automatic transmission is achieved. The engagement command pressure is corrected in a decrease direction when a maximum rate of change of a gear ratio is larger than a rate of change of a thrust-up determination gear ratio, and the engagement command pressure is corrected in a rise direction when the maximum rate of change of the gear ratio is smaller than a rate of change of a prolongation determination gear ratio. Thus, by correcting an engagement command pressure using the maximum rate of change of the gear ratio, a proper output shaft torque wave form can be obtained. Therefore, a fluctuation of an output shaft torque at the time of a torque phase during the upshift has no strong influence on an acceleration of a vehicle, As a result a shift of a comfortable feeling can be achieved.

摘要翻译： 自动变速器包括电子控制单元和液压控制单元。 电子控制单元向设置在液压控制单元中的螺线管指令接合指令压力，直到由螺线管产生的时间接合元件压力达到搁板压力，从而实现自动变速器的升档。 当变速比的最大变化率大于上推判定传动比的变化率时，接合指令压力在减小方向上被校正，并且当最大值 变速比的变化率小于延长判定传动比的变化率。 因此，通过使用变速比的最大变化率来修正接合指令压力，可以获得适当的输出轴转矩波形。 因此，升档时的扭矩相位时的输出轴转矩的变动对车辆的加速度没有强烈的影响，结果可以实现舒适感的转变。