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    • 2. 发明授权
    • Vehicular automatic transmission and apparatus and method for
controlling gear shift thereof
    • 车辆自动变速器及其变速控制装置及方法
    • US5925086A
    • 1999-07-20
    • US908713
    • 1997-08-12
    • Hiromasa SakaiMotoharu NishioTakashi Murasugi
    • Hiromasa SakaiMotoharu NishioTakashi Murasugi
    • F16H59/24F16H59/36F16H59/40F16H59/42F16H61/06F16H61/08
    • F16H61/061F16H59/24F16H59/36F16H59/40F16H59/42F16H61/08Y10T477/69383
    • In apparatus and method for controlling a gear shift of a vehicular automatic transmission, the automatic transmission the automatic transmission having a releasing frictional element, a clutching frictional element, and a source of a releasing working liquid pressure to be applied to the releasing frictional element and a clutching working liquid pressure to be applied to the clutching frictional element, a gear shift in the automatic transmission being carried out by a shift from the releasing frictional element to the clutching frictional element, during a time duration from a time at which a gear shift instruction is outputted to a time at which a torque phase is started, the releasing working liquid pressure is reduced and reached without undershooting to a first predetermined working liquid pressure value under which the releasing frictional element is in a state immediately before an occurrence of a slip and the clutching working liquid pressure is set at least a second predetermined working liquid pressure value under which the clutching element is in a state immediately before a clutching.
    • 在用于控制车辆自动变速器的换档的装置和方法中,自动变速器具有释放摩擦元件,离合摩擦元件和释放作用液体的压力源以提供给释放摩擦元件的自动变速器,以及 施加在离合摩擦元件上的离合作用液体压力,在从换档时间起的持续时间内,通过从释放摩擦元件向离合摩擦元件的移动来执行自动变速器中的档位换档 指令被输出到转矩相位开始的时刻,释放工作液体压力下降并达到,而不会下降到第一预定工作液体压力值,在该第一预定工作液体压力值下,释放摩擦元件处于紧急发生滑动之前的状态 并且将所述离合工作液体压力设定为至少第二预定器 挖掘的工作液体压力值,在该工作液压值下,夹紧元件处于紧接着离合之前的状态。
    • 4. 发明授权
    • Shift control apparatus of automatic transmission
    • 自动变速箱换档控制装置
    • US5938563A
    • 1999-08-17
    • US25256
    • 1998-02-18
    • Motoharu NishioTakashi MurasugiHiromasa Sakai
    • Motoharu NishioTakashi MurasugiHiromasa Sakai
    • F16H61/04F16H61/08F16H61/686
    • F16H61/0437F16H2061/0488F16H2312/02F16H61/08F16H61/686Y10T477/6895
    • A shift control apparatus of an automatic transmission executes a transient control of an engagement pressure of a first speed selecting friction element when a first speed is selected after a higher speed is once selected during a change from a neutral range to a forward drive range. A band brake pressure for selecting the second speed is rapidly increased at a first moment. A forward clutch pressure for selecting the first speed is increased at a second moment delaying to the first moment by a predetermined period adjusted to a line pressure lowered period. The forward clutch pressure is pre-charged during a period between the first and second moments, then being hold for a preset time period at a return spring corresponding pressure adjusted by a leaning control, and being increased by a slope adjusted by the leaning control for a predetermined period to establish the second speed by the engagement of the forward clutch. Then, the band brake pressure is rapidly decreased and further decreased by a slope to disengage the band brake in order to establish the first speed.
    • 自动变速器的变速控制装置,在从中立档位向正向行驶档位的变更期间,一旦选择了高速,则选择第一速度时,对第一速度选择摩擦元件的接合压力进行暂态控制。 用于选择第二速度的带制动压力在第一时刻迅速增加。 用于选择第一速度的前进离合器压力在延迟到第一时刻的调整到行压降低期间的预定周期的第二时刻增加。 前进离合器压力在第一和第二力矩之间的期间被预充电,然后在由倾斜控制调整的复位弹簧对应压力下保持预设时间段,并且通过倾斜控制调整的斜率增加 通过前进离合器的接合来建立第二速度的预定时间段。 然后,频带制动压力迅速下降,并进一步减小斜率以使带制动器脱离,以便建立第一速度。
    • 7. 发明授权
    • Controller of toroidal continuously variable transmission
    • 环形无级变速器控制器
    • US06409625B1
    • 2002-06-25
    • US09708706
    • 2000-11-09
    • Hiromasa SakaiTsutomu YamazakiMotoharu Nishio
    • Hiromasa SakaiTsutomu YamazakiMotoharu Nishio
    • F16H3702
    • F16H37/086F16H15/38F16H61/6648F16H2037/088
    • A toroidal continuously variable transmission (1) comprises power rollers (18C, 18D, 20C, 20D) which transmit a torque between input disks (18A, 20A) and output disks (20A, 20B), and trunnions (104, 105, 114, 115) which drive the power rollers (18C, 18D, 20C, 20D) in a perpendicular direction to a rotation shaft (16A) according to a differential pressure between a first oil chamber (101) and a second oil chamber (102). When the second oil chamber (102) is at higher pressure than the first oil chamber (101), the toroidal continuously variable transmission (1) causes a downshift, and when the first oil chamber (101) is at higher pressure than the second oil chamber (102), the toroidal continuously variable transmission (1) causes an upshift. The first oil chamber (101) is connected to a first passage (176) and the second oil chamber (102) is connected to a second passage (177). A speed ratio control valve (70, 70A) controls a direction and a flowrate of the first passage (176) and the second passage (177). A pressure control valve (200, 210, 220, 40, 45, 41, 46) limits a maximum differential pressure of the first oil chamber (101) and the second oil chamber (102) when the transmission (1) causes a downshift to be less than a maximum differential pressure of the first oil chamber (101) and the second oil chamber (102) when the transmission (1) causes an upshift. This arrangement prevents a sharp downshift of the toroidal continuously variable transmission (1) due to a fault or incorrect operation.
    • 环形无级变速器(1)包括在输入盘(18A,20A)和输出盘(20A,20B)之间传递扭矩的动力辊(18C,18D,20C,20D)和耳轴(104,105,114, 115),其根据第一油室(101)和第二油室(102)之间的压差沿垂直于旋转轴(16A)的方向驱动动力辊(18C,18D,20C,20D)。 当第二油室(102)处于比第一油室(101)更高的压力时,环形无级变速器(1)导致降档,并且当第一油室(101)处于比第二油室 室(102),环形无级变速器(1)导致升档。 第一油室(101)连接到第一通道(176),第二油室(102)连接到第二通道(177)。 速比控制阀(70,70A)控制第一通道(176)和第二通道(177)的方向和流量。 压力控制阀(200,210,220,40,45,41,46)限制了当变速器(1)导致降档到第一油室(101)和第二油室(102)时的最大压差 小于当变速器(1)升档时第一油室(101)和第二油室(102)的最大压差。 这种布置防止由于故障或不正确的操作导致的环形无级变速器(1)的急速降档。
    • 9. 发明授权
    • Non-finite speed ratio continuously variable transmission device
    • 无限速比无级变速器
    • US06287232B1
    • 2001-09-11
    • US09459922
    • 1999-12-14
    • Hiromasa SakaiMotoharu Nishio
    • Hiromasa SakaiMotoharu Nishio
    • F16H3714
    • F16H61/6648F16H37/086F16H61/664F16H2037/088F16H2061/6614
    • In a non-finite speed ratio transmission device using a toroidal continuously variable transmission (2), a hydraulic cylinder (30) for driving a power roller (20) via a trunnion (23), a shift control valve (46) for controlling a supply direction of oil to an oil chambers (30A, 30B) of the hydraulic cylinder (30), and a precess cam (35) which feeds back a displacement of the power roller (20) to the shift control valve (46) so as to shut-off the flow of oil to and from the oil chambers (30A, 30B), are provided. The shift control valve (46) comprises a drain port (46J) which can be connected to the oil chamber (30A) and a drain port (46I) which can be connected to the oil chamber (30B). By providing a positive torque control valve (40) which controls the oil pressure of the drain port (46I), and a negative torque control valve (45) which controls the oil pressure of the drain port (46J), the shift control valve (46) controls a differential pressure &Dgr;P of the oil chambers (30A, 30B) from 0 to a line pressure PL when the speed ratio ic of the toroidal continuously variable transmission (2) is maintained in the vicinity of a geared neutral position GNP.
    • 在使用环形无级变速器(2)的非有限速比传动装置中,经由耳轴(23)驱动动力辊(20)的液压缸(30),用于控制 向液压缸(30)的油室(30A,30B)供给油的方向,以及将动力辊(20)的位移反馈到换挡控制阀(46)的进动凸轮(35),以便 以便将油流向油室(30A,30B)切断。 变速控制阀(46)包括能够连接到油室(30A)的排出口(46J)和能够连接到油室(30B)的排出口46I。 通过设置控制排水口(46I)的油压的正转矩控制阀(40)和控制排水口(46J)的油压的负转矩控制阀(45),变速控制阀( 46)当环形无级变速器(2)的速比ic保持在齿轮空档位置GNP附近时,将油室(30A,30B)的压差DELTAP从0控制到管路压力PL。
    • 10. 发明授权
    • Non-finite speed change ratio transmission device
    • 非限速变速传动装置
    • US5935039A
    • 1999-08-10
    • US35730
    • 1998-03-05
    • Hiromasa SakaiMotoharu Nishio
    • Hiromasa SakaiMotoharu Nishio
    • F16H15/38F16H37/08F16H61/00F16H61/02
    • F16H37/086F16H2037/088F16H61/0272Y10T477/619
    • The same rotation torque is input to a continuously variable transmission of a vehicle which continuously varies a speed change ratio and a reduction gear unit. A planetary gear mechanism is provided comprising an output shaft which varies a rotation direction according to a relation between the output speed of the continuously variable transmission and the output speed of the reduction gear unit. The continuously variable transmission varies the speed change ratio according to an oil pressure balance between two oil chambers. A direction change-over valve selectively supplies a first oil pressure and a second oil pressure to these oil chambers, and a control valve controls a differential pressure of the first oil pressure and second oil pressure. The control range of the differential pressure controlled by the control valve is narrowed due to reversal of the oil pressure supply direction by the direction change-over valve according to whether the vehicle is moving forward or in reverse, and control precision is thereby improved.
    • 相同的转矩被输入到连续变化变速比的车辆的无级变速器和减速装置。 行星齿轮机构包括输出轴,该输出轴根据无级变速器的输出速度与减速齿轮单元的输出速度之间的关系来改变旋转方向。 无级变速器根据两个油室之间的油压平衡来改变变速比。 方向切换阀选择性地向这些油室提供第一油压和第二油压,并且控制阀控制第一油压和第二油压的压差。 控制阀控制的压差的控制范围由于车辆向前或向后移动而由于方向转换阀的油压供给方向的反转而变窄,从而提高了控制精度。