公开(公告)号：US5630772A

公开(公告)日：1997-05-20

申请号：US428552

申请日：1995-04-25

申请人： Kazumasa Tsukamoto ,  Masahiro Hayabuchi ,  Masaaki Nishida ,  Yoshihisa Yamamoto ,  Muneo Kusafuka ,  Hiroshi Tsutsui ,  Akihito Iwata

发明人： Kazumasa Tsukamoto ,  Masahiro Hayabuchi ,  Masaaki Nishida ,  Yoshihisa Yamamoto ,  Muneo Kusafuka ,  Hiroshi Tsutsui ,  Akihito Iwata

IPC分类号： F16H3/66 ,  F16H59/22 ,  F16H59/54 ,  F16H59/66 ,  F16H61/20 ,  B60K41/20

CPC分类号： F16H61/20 ,  B60W30/18118 ,  F16H2061/205 ,  F16H2061/207 ,  F16H2312/02 ,  F16H3/66 ,  F16H59/22 ,  F16H59/54 ,  F16H59/66 ,  Y10T477/641 ,  Y10T477/646 ,  Y10T477/648 ,  Y10T477/84

摘要： A system and method for controlling an automatic transmission in a vehicle drive train including an engine, the automatic transmission and a fluid coupling for transmitting the rotation of the engine to the transmission. The transmission includes a clutch applied when a forward running range is selected; a second one-way clutch which is applied, when the first clutch is applied, to establish a forward 1st speed; and a brake for locking the one-way clutch, when applied, to block the reverse rotation of the output shaft of the transmission. A first hydraulic servo receives a first oil pressure for applying the first clutch and a second hydraulic servo receives a second oil pressure for applying the brake. When a forward running range is selected, with the vehicle stopped, the engine idling and a foot brake engaged, the oil pressure of the first hydraulic servo is lowered from the oil pressure at the 1st speed whereas the oil pressure of the second hydraulic servo is raised to a modulated pressure. The modulated pressure is set to generate, against the reverse force on the vehicle facing up an incline, a resistance corresponding to the forward driving force generated when the engine is idling in 1st speed.

摘要翻译： 一种用于控制包括发动机，自动变速器和用于将发动机的旋转传递到变速器的流体联动器的车辆传动系中的自动变速器的系统和方法。 变速器包括当选择正向行驶范围时施加的离合器; 当施加第一离合器时，施加第二单向离合器以建立前进1速度; 以及用于在施加时用于锁定单向离合器的制动器，以阻止变速器的输出轴的反向旋转。 第一液压伺服机构接收用于施加第一离合器的第一油压，而第二液压伺服机构接收用于施加制动器的第二油压。 当选择正向行驶范围时，当车辆停止时，发动机怠速和脚踏制动器接合，第一液压伺服机构的油压从第一速度的油压降低，而第二液压伺服机构的油压为 提高到调制压力。 调制压力被设定为产生对着车辆朝向斜坡的反向力，该阻力对应于当发动机以第一速度空转时产生的前进驱动力。

公开(公告)号：US5542887A

公开(公告)日：1996-08-06

申请号：US428968

申请日：1995-04-25

申请人： Kazumasa Tsukamoto ,  Masahiro Hayabuchi ,  Masaaki Nishida ,  Yoshihisa Yamamoto ,  Muneo Kusafuka ,  Kazuhiro Mikami ,  Hiroshi Tsutsui ,  Akihito Iwata

发明人： Kazumasa Tsukamoto ,  Masahiro Hayabuchi ,  Masaaki Nishida ,  Yoshihisa Yamamoto ,  Muneo Kusafuka ,  Kazuhiro Mikami ,  Hiroshi Tsutsui ,  Akihito Iwata

IPC分类号： F16H3/66 ,  F16H59/22 ,  F16H59/38 ,  F16H59/42 ,  F16H59/46 ,  F16H61/00 ,  F16H61/20

CPC分类号： F16H61/20 ,  F16H2059/385 ,  F16H2059/467 ,  F16H2061/207 ,  F16H2312/02 ,  F16H3/66 ,  F16H59/22 ,  F16H59/42

摘要： An automatic transmission control system providing a neutral control state in which there is no slipping engagement of a first clutch which is engaged upon selection of a forward range and, as a result, the vehicle is not subjected to idling vibration. The fuel consumption reducing effect of the neutral control state is maintained and there is no heating and consequent deterioration of the friction material of the clutch. The control system includes a hydraulic servo for operation of the clutch, an input side speed sensor for detecting the input side speed of a fluid power coupling device connecting the transmission to the output of an engine, an output side speed sensor for detecting the output side speed of the fluid power coupling device, and a controller. The controller includes differential speed calculator, differential speed change detector, a pressure increasing device for increasing the hydraulic pressure of the hydraulic servo by a set pressure when the differential speed has not changed, and a pressure reducing device for reducing the hydraulic pressure of the hydraulic servo by a set pressure when the differential speed has changed.

摘要翻译： 一种自动变速器控制系统，其提供空档控制状态，其中在选择前进档位时接合的第一离合器没有滑动接合，结果，车辆不受到空转振动。 保持中性控制状态的燃料消耗降低效果，并且不会导致离合器的摩擦材料的加热和随之而来的劣化。 控制系统包括用于操作离合器的液压伺服机构，用于检测将变速器与发动机的输出连接的流体动力联接装置的输入侧速度的输入侧速度传感器，检测输出侧的输出侧速度传感器 流体动力耦合装置的速度和控制器。 控制器包括差速器计算器，差速变速检测器，用于当差速没有变化时将设定压力提高液压伺服机构的液压的增压装置，以及用于降低液压油压的减压装置 当差速变化时，通过设定压力伺服。

公开(公告)号：US5547436A

公开(公告)日：1996-08-20

申请号：US428551

申请日：1995-04-25

申请人： Masahiro Hayabuchi ,  Masaaki Nishida ,  Yoshihisa Yamamoto ,  Kazuhiro Mikami ,  Hiroshi Tsutsui ,  Akihito Iwata

发明人： Masahiro Hayabuchi ,  Masaaki Nishida ,  Yoshihisa Yamamoto ,  Kazuhiro Mikami ,  Hiroshi Tsutsui ,  Akihito Iwata

IPC分类号： F16H61/00 ,  F16H3/66 ,  F16H59/16 ,  F16H59/22 ,  F16H59/24 ,  F16H59/36 ,  F16H59/44 ,  F16H59/54 ,  F16H61/02 ,  F16H61/04 ,  F16H61/10 ,  F16H61/20 ,  F16H63/40 ,  F16H59/04 ,  F16H59/14

CPC分类号： F16H61/20 ,  B60W30/18118 ,  F16H2061/205 ,  F16H2061/207 ,  F16H2312/02 ,  F16H3/66 ,  F16H59/16 ,  F16H59/22 ,  F16H59/24 ,  F16H59/36 ,  F16H59/44 ,  F16H59/54 ,  F16H61/0021 ,  Y10T477/681

摘要： A control system for an automatic transmission in a vehicle powertrain including an engine and a fluid coupling for transmitting the rotation of an engine to the transmission, the transmission having a clutch which is applied responsive to selection of a forward running range and a hydraulic servo for applying the clutch responsive to an oil pressure. The control system includes a control unit for controlling the oil pressure to the hydraulic servo; an input torque detector for detecting the input torque to be inputted to the transmission; and a specific state detector for detecting satisfaction of a set of specific starting conditions including: (1) that the forward running range has been selected, (2) that the vehicle is stopped and (3) that the engine is in an idling state. The control unit sets the oil pressure to the hydraulic servo to correspond to the input torque at the instant of detection of satisfaction the specific starting conditions, and includes: a first pressure-reducer for abruptly reducing the oil pressure of the hydraulic servo to a set oil pressure immediately before the release of the clutch is started; and a second pressure-reducer for gradually reducing the oil pressure of the hydraulic servo, which has been reduced to the set oil pressure by the first pressure-reducer.

摘要翻译： 一种用于车辆动力系统中的自动变速器的控制系统，包括发动机和用于将发动机的旋转传递到变速器的流体联轴器，所述变速器具有响应于向前行驶范围的选择而施加的离合器和用于 响应于油压而施加离合器。 控制系统包括用于控制液压伺服机构的油压的控制单元; 输入转矩检测器，用于检测要输入到变速器的输入转矩; 以及用于检测特定起动条件的满足的特定状态检测器，包括：（1）已经选择了前进行驶范围，（2）车辆停止，（3）发动机处于空转状态。 控制单元将液压伺服系统的油压设定为与特定起动条件满足时的检测时刻的输入转矩对应，包括：将液压伺服机构的油压突然降低到一组的第一减压器 开始释放离合器之前的油压; 以及用于逐渐降低由第一减压器降低到设定油压的液压伺服机构的油压的第二减压器。

公开(公告)号：US5741201A

公开(公告)日：1998-04-21

申请号：US645958

申请日：1996-05-10

申请人： Hiroshi Tsutsui ,  Masahiro Hayabuchi ,  Masaaki Nishida ,  Yoshihisa Yamamoto

发明人： Hiroshi Tsutsui ,  Masahiro Hayabuchi ,  Masaaki Nishida ,  Yoshihisa Yamamoto

IPC分类号： F16H61/20 ,  F16H59/44 ,  F16H59/50 ,  F16H59/54 ,  F16H59/68 ,  F16H61/06

CPC分类号： F16H61/061 ,  F16H2059/6807 ,  F16H2061/207 ,  F16H2312/022 ,  F16H59/44 ,  F16H59/54 ,  F16H61/20 ,  Y10T477/689 ,  Y10T477/6895

摘要： A control system for an automatic transmission includes: an input clutch applied, responsive to selection of a forward running range, to transmit the rotation of an engine to a transmission mechanism; a hydraulic servo for selectively applying/releasing the input clutch; a stop state detector for detecting a stop state of a vehicle in terms of the selection of the forward running range, lack of vehicle speed, the release of an accelerator pedal and the depression of a brake pedal; starting operation detector for detecting an operation to start the vehicle in motion; application state detector for detecting the application state of the input clutch; and a controller for controlling oil pressure fed to the hydraulic servo on the basis of signals coming from the various detectors. If arrival at a predetermined released state is decided, the hydraulic servo is fed with a summed oil pressure which is the total of an initial application oil pressure and a release oil pressure, to initiate piston movement and start of engagement of the input clutch, and the oil pressure is thereafter gradually raised from the summed pressure on the basis of a predetermined pressure relationship. If a failure to arrive at the predetermined released state is decided, the oil pressure is gradually raised on the basis of the predetermined pressure relationship from the oil pressure which is fed to the hydraulic servo when a starting operation is detected.

摘要翻译： 一种用于自动变速器的控制系统，包括：输入离合器，响应于选择正向行驶范围，将发动机的旋转传递到变速机构; 用于选择性地施加/释放输入离合器的液压伺服机构; 根据前进行驶范围的选择，车速的不足，油门踏板的释放以及制动踏板的按下来检测车辆的停止状态的停止状态检测器; 启动操作检测器，用于检测运动中启动车辆的操作; 用于检测输入离合器的应用状态的应用状态检测器; 以及控制器，用于根据来自各种检测器的信号来控制供给液压伺服的油压。 如果确定达到预定的释放状态，则液压伺服机构被馈送总和的油压，其是初始施加油压和释放油压的总和，以启动输入离合器的活塞移动和开始接合，以及 油压随后基于预定的压力关系从总和压力逐渐升高。 如果确定未到达预定释放状态，则当检测到启动操作时，基于从供给到液压伺服机构的油压的预定压力关系，油压逐渐升高。

公开(公告)号：US5558600A

公开(公告)日：1996-09-24

申请号：US427875

申请日：1995-04-26

申请人： Kazumasa Tsukamoto ,  Masahiro Hayabuchi ,  Masaaki Nishida ,  Yoshihisa Yamamoto ,  Hiroshi Tsutsui ,  Kaoru Nadayoshi

发明人： Kazumasa Tsukamoto ,  Masahiro Hayabuchi ,  Masaaki Nishida ,  Yoshihisa Yamamoto ,  Hiroshi Tsutsui ,  Kaoru Nadayoshi

IPC分类号： F16H61/00 ,  F16H59/24 ,  F16H59/44 ,  F16H59/66 ,  F16H61/02 ,  F16H61/10 ,  F16H59/00

CPC分类号： F16H59/66 ,  B60W2550/20 ,  F16H2059/605 ,  F16H59/24 ,  F16H59/44 ,  F16H61/0213 ,  Y10T477/693

摘要： An transmission control unit includes a sensor for detecting a vehicle condition, a traffic condition monitor for determining whether or not traffic is heavy, a transmission pattern selector, and a transmission controller. The traffic condition monitor adds or subtracts a predetermined value in response to vehicle speed detected at set intervals of time so as to provide a vehicle speed value. The heavier the traffic, the larger the additional value. Also, the lighter the traffic, the larger the subtractive value. The vehicle traffic value is used in order to determine how heavy the traffic is.

摘要翻译： 发送控制单元包括用于检测车辆状态的传感器，用于确定交通量是否重的交通状况监视器，发送模式选择器和变速器控制器。 交通状况监视器响应于在设定的时间间隔检测到的车速来添加或减去预定值，以便提供车速值。 交通越重，附加值越大。 此外，交通量越轻，减法值越大。 使用车辆流量值来确定交通量多大。

公开(公告)号：US5911646A

公开(公告)日：1999-06-15

申请号：US774529

申请日：1996-12-30

申请人： Hiroshi Tsutsui ,  Kazumasa Tsukamoto ,  Masahiro Hayabuchi ,  Masaaki Nishida ,  Yoshihisa Yamamoto ,  Akitomo Suzuki

发明人： Hiroshi Tsutsui ,  Kazumasa Tsukamoto ,  Masahiro Hayabuchi ,  Masaaki Nishida ,  Yoshihisa Yamamoto ,  Akitomo Suzuki

IPC分类号： F16H61/04 ,  B60T7/12 ,  F16H3/66 ,  F16H61/20 ,  B60K41/26

CPC分类号： F16H61/20 ,  B60T7/122 ,  B60W2550/142 ,  B60W30/18118 ,  F16H2059/663 ,  F16H2061/205 ,  F16H2061/207 ,  F16H3/66 ,  Y10T477/646 ,  Y10T477/681

摘要： When a vehicle is halted with the transmission in a forward drive range, an input clutch is disengaged to enhance the fuel efficiency and, at the same times a hill-hold brake is engaged to prevent the vehicle from rolling backward on a steep up-slope. At that time, the hydraulic pressure P.sub.C-1 of the input clutch C1 is gradually reduced by .DELTA.P.sub.CIR (P.sub.C-1 =P.sub.C-1 -.DELTA.P.sub.CIR) while the hydraulic pressure P.sub.B-1 of the hill-hold brake B1 is increased gradually so as to satisfy an equation P.sub.B-1 =K1+K2 X e where .DELTA.P.sub.cir is a change in hydraulic pressure which is required for gradually disengaging the first clutch C1, K1 is a hill-hold brake pressure at which braking resistance begins, K2 is hill-hold brake pressure producing a fully braked condition, and e is the input/output rotational-speed ratio of a torque converter Subsequently during start of vehicle movement, the hydraulic pressure P.sub.C-1 of the input clutch C1 is gradually increased (P.sub.C-1 =p.sub.C-1 +.DELTA.P.sub.C-1A) while the hydraulic pressure P.sub.B-1 of the hill-hold brake B1 is gradually decreased (P.sub.B-1 ==P.sub.B-1-.DELTA.P.sub.B-1) until the ratio of the rotational speed N.sub.C-1 of the first clutch C1 becomes less than a rotational speed N.sub.C-1E corresponding to the clutch being almost engaged .DELTA.P.sub.C-1A and .DELTA.P.sub.B-1 are incremental values proportional to accelerator depression so that a delay in starting is reduced in accordance with driver demand.

摘要翻译： 当车辆在前进驱动范围内的变速器停止时，输入离合器被分离以提高燃料效率，并且同时接合山形制动器以防止车辆在陡峭的上坡上向后滚动 。 此时，在山体抱闸B1的液压PB-1逐渐增大的同时，通过DELTA PCIR（PC-1 = PC-1-DELTA PCIR）逐渐减小输入离合器C1的液压PC-1 以满足公式PB-1 = K1 + K2×e，其中DELTA Pcir是逐渐脱离第一离合器C1所需的液压变化，K1是制动电阻开始时的保持制动压力，K2 是抱闸制动压力，产生完全制动状态，e是变矩器的输入/输出转速比。 随后在车辆移动开始时，输入离合器C1的液压PC-1逐渐增加（PC-1 = pC-1 + DELTA PC-1A），而抱抱制动器B1的液压PB-1为 逐渐减小（PB-1 = PB-1-DELTA PB-1），直到第一离合器C1的转速NC-1的比率变得小于对应于几乎接合的离合器的转速NC-1E DELTA PC- 1A和DELTA PB-1是与加速器抑制成比例的增量值，从而根据驾驶员需求减少启动延迟。

公开(公告)号：US5788603A

公开(公告)日：1998-08-04

申请号：US645954

申请日：1996-05-10

申请人： Hiroshi Tsutsui ,  Yoshihisa Yamamoto ,  Masahiro Hayabuchi ,  Masaaki Nishida

发明人： Hiroshi Tsutsui ,  Yoshihisa Yamamoto ,  Masahiro Hayabuchi ,  Masaaki Nishida

IPC分类号： F16H3/66 ,  F16H59/22 ,  F16H59/24 ,  F16H59/40 ,  F16H59/42 ,  F16H59/44 ,  F16H59/50 ,  F16H61/06 ,  F16H61/20 ,  F16H61/686

CPC分类号： F16H61/061 ,  F16H61/20 ,  F16H2059/706 ,  F16H2061/207 ,  F16H2312/02 ,  F16H2312/022 ,  F16H3/66 ,  F16H59/22 ,  F16H59/24 ,  F16H59/40 ,  F16H59/42 ,  F16H59/44 ,  F16H61/686 ,  Y10T477/689 ,  Y10T477/6895

摘要： A control system for an automatic transmission operates a clutch in a speed change unit to disconnect a transmission mechanism from a fluid transmission unit during a neutral operating state while the vehicle in a forward gear is held stopped by braking with the throttle fully closed. Reengagement of the clutch such as by depression of accelerator pedal (throttle open), release of the brake pedal, etc., is produced by a gradual increase in oil pressure to the servo operating the clutch to prevent clutch application shock. Wear on the clutch is reduced by abrupt increase of the oil pressure in response to satisfaction of a clutch engagement completion condition based upon input RPM, output RPM and the gear ratio of the target gear. In one embodiment, this abrupt increase occurs immediately after satisfaction of the clutch engagement completion condition when the throttle is open but occurs after elapse of a set time period from satisfaction of the clutch engagement completion condition when the throttle is closed. In a second embodiment when the throttle is closed, an application standby condition based on the input RPM, the output RPM and the gear ratio indicating backward vehicle movement is determined after the clutch engagement completion condition is satisfied. If backward movement is indicated, the abrupt increase in oil pressure is made after a set time period, otherwise the abrupt increase occurs immediately. In a third embodiment, a second clutch engagement completion condition requirement is substituted for the delay of the set time period of the second embodiment to prevent application shock during the clutch engagement.

摘要翻译： 用于自动变速器的控制系统在变速单元中操作离合器，以在中间运行状态期间将传动机构与流体传动单元断开，同时前进档中的车辆通过在节气门完全关闭时制动而停止。 通过按压加速器踏板（节气门打开），制动踏板释放等离合器的重新接合是通过逐渐增加操作离合器的伺服器的油压来防止离合器施加冲击而产生的。 响应于基于输入RPM，输出RPM和目标齿轮的传动比的离合器接合完成条件的满足，油压的突然增加减小了离合器上的磨损。 在一个实施例中，当节气门打开时满足离合器接合完成状态之后立即发生这种突然增加，但是当节气门关闭时从满足离合器接合完成状态起经过设定时间段之后发生。 在第二实施例中，当节气门关闭时，在满足离合器接合完成条件之后确定基于输入RPM，输出RPM和表示向后车辆移动的齿轮比的应用待机状态。 如果指示向后运动，则在设定的时间段之后进行油压的突然增加，否则立即出现突然增加。 在第三实施例中，第二离合器接合完成条件要求代替第二实施例的设定时间段的延迟，以防止离合器接合期间的施加冲击。

公开(公告)号：US5558599A

公开(公告)日：1996-09-24

申请号：US431074

申请日：1995-04-27

申请人： Kazumasa Tsukamoto ,  Masahiro Hayabuchi ,  Masaaki Nishida ,  Yoshihisa Yamamoto ,  Muneo Kusafuka ,  Kazuhiro Mikami ,  Hiroshi Tsutsui

发明人： Kazumasa Tsukamoto ,  Masahiro Hayabuchi ,  Masaaki Nishida ,  Yoshihisa Yamamoto ,  Muneo Kusafuka ,  Kazuhiro Mikami ,  Hiroshi Tsutsui

IPC分类号： F16H61/18 ,  F16H59/24 ,  F16H59/36 ,  F16H61/00 ,  F16H61/02 ,  F16H61/04

CPC分类号： F16H61/0437 ,  F16H2059/6823 ,  F16H2061/0258 ,  F16H2061/026 ,  F16H2061/0488 ,  F16H59/24 ,  F16H59/36 ,  F16H61/0206 ,  Y10T477/689 ,  Y10T477/6895

摘要： A control system for an automatic transmission, which receives the rotation of the engine through a fluid coupling, and which has a clutch applied when a forward running range is selected and released when a neutral range is selected and a range selecting mechanism for selecting a range. The control system includes a range detector for detecting the selected range, a hydraulic circuit and a control unit. The hydraulic circuit includes a hydraulic servo which is fed an oil pressure for applying the clutch and a manual valve movable between at least a forward range position for generating a forward range oil pressure and a neutral range position, by operation of the range selecting mechanism. A regulator valve regulates the forward range oil pressure to generate a regulated oil pressure. A solenoid valve is turned ON/OFF by the control unit to generate a signal oil pressure for switching a change-over valve between a first position feeding the forward range oil pressure to the hydraulic servo and a second position feeding the regulated oil pressure to the hydraulic servo. The control unit delays output of the signal solenoid valve, if a switching from the forward running range to the neutral range is detected by the range detector, so that the change-over valve remains in the second position until lapse of a set time period, and is then moved to a first position after the set time period has elapsed.

摘要翻译： 一种用于自动变速器的控制系统，其通过流体联轴器接收发动机的旋转，并且当选择空档范围时选择和释放正向行驶范围时具有离合器，以及用于选择范围的范围选择机构 。 控制系统包括用于检测选定范围的量程检测器，液压回路和控制单元。 液压回路包括供给用于施加离合器的油压的液压伺服机构，以及通过范围选择机构的动作可以在至少前进范围位置之间移动的手动阀，该手动阀可以产生前进油压和中间档位置。 调节阀调节前进油压以产生调节油压。 电磁阀通过控制单元接通/断开，以产生用于在将前进范围油压提供给第一位置与液压伺服机构之间切换转换阀的信号油压和将调节油压供给到第二位置的信号油压 液压伺服 控制单元延迟信号电磁阀的输出，如果由范围检测器检测到从前进行程到中间范围的切换，则转换阀保持在第二位置直到经过设定的时间段， 然后在经过设定时间段之后移动到第一位置。

公开(公告)号：US5800308A

公开(公告)日：1998-09-01

申请号：US644444

申请日：1996-05-13

申请人： Hiroshi Tsutsui ,  Kazumasa Tsukamoto ,  Masahiro Hayabuchi ,  Masaaki Nishida ,  Yoshihisa Yamamoto

发明人： Hiroshi Tsutsui ,  Kazumasa Tsukamoto ,  Masahiro Hayabuchi ,  Masaaki Nishida ,  Yoshihisa Yamamoto

IPC分类号： F16H61/20 ,  F16H59/24 ,  F16H59/36 ,  F16H59/38 ,  F16H59/50 ,  F16H59/54 ,  F16H59/68 ,  F16H61/06

CPC分类号： F16H61/20 ,  F16H61/061 ,  B60W30/18118 ,  F16H2059/363 ,  F16H2059/385 ,  F16H2059/425 ,  F16H2059/6807 ,  F16H2061/0477 ,  F16H2061/205 ,  F16H2061/207 ,  F16H2312/02 ,  F16H2312/022 ,  F16H59/24 ,  F16H59/36 ,  F16H59/54 ,  Y10T477/689 ,  Y10T477/6895 ,  Y10T477/6939

摘要： A control system for an automatic transmission operates a clutch for disengaging a transmission mechanism when a vehicle is stopped and idling with the brake pedal depressed while the gear shift is in a forward gear. The clutch is maintained at a drag state (friction elements disengaged but oil causing some torque transmission) bordering a slip state (friction elements engaged) When a neutral control is started, the clutch is released until the retraction of the piston of the hydraulic servo is started. When the rate of change in a rotational difference does not exceeds a reference rate of change even after a set time has elapsed, booster means of specific release state holding means decides that the clutch is in a drag region, and raises an oil pressure to be fed to the hydraulic servo, by a set pressure. On the other hand, when the rate of change exceeds the reference rate and the rotational difference increases, irrespective of the lapse of a set time, the first pressure reducing means of the specific release state holding means decides that the clutch is in a slip region, and lowers the oil pressure to be fed to the hydraulic servo, by a set pressure. As a result, the clutch is always held in a state which is immediately before the transfer from the drag region to the slip region.

摘要翻译： 用于自动变速器的控制系统操作离合器，用于当车辆停止时使传动机构脱离，并且在变速处于前进档时踩下制动踏板。 离合器保持在拖曳状态（摩擦元件脱开但导致一些扭矩传递的油）接合滑动状态（摩擦元件接合）当开始空档控制时，离合器被释放，直到液压伺服机构的活塞的缩回为 开始了 当旋转差的变化率即使经过设定时间后也不超过参考变化率时，特定释放状态保持机构的升压装置判定离合器处于拖曳区域，并将油压升高为 通过设定压力供给液压伺服。 另一方面，当变化率超过参考速度并且旋转差异增加时，与设定时间的经过无关，特定释放状态保持装置的第一减压装置决定离合器处于滑动区域 并且通过设定压力降低要供给到液压伺服机构的油压。 结果，离合器总是保持在从拖曳区域到滑移区域之前的紧挨着的状态。

公开(公告)号：US5782711A

公开(公告)日：1998-07-21

申请号：US768462

申请日：1996-12-18

申请人： Hiroshi Tsutsui ,  Kazumasa Tsukamoto ,  Masahiro Hayabuchi ,  Masaaki Nishida ,  Yoshihisa Yamamoto ,  Toshihiro Kano ,  Takayuki Kubo ,  Saoto Tsuchiya

发明人： Hiroshi Tsutsui ,  Kazumasa Tsukamoto ,  Masahiro Hayabuchi ,  Masaaki Nishida ,  Yoshihisa Yamamoto ,  Toshihiro Kano ,  Takayuki Kubo ,  Saoto Tsuchiya

IPC分类号： F16H59/24 ,  F16H59/42 ,  F16H59/44 ,  F16H59/72 ,  F16H61/00 ,  F16H61/06 ,  F16H61/08 ,  F16H5/40

CPC分类号： F16H61/061 ,  F16H2059/425 ,  F16H2061/0087 ,  F16H59/24 ,  F16H59/42 ,  F16H59/44 ,  F16H59/72 ,  F16H61/08 ,  Y10T477/6937 ,  Y10T477/6939 ,  Y10T477/693958

摘要： A hydraulic pressure control apparatus for an automatic transmission including a microprocessor-based control unit for controlling hydraulic pressure supplied to hydraulic servos of friction engagement elements. The control apparatus calculates a target hydraulic pressure P.sub.TA for a condition at the start of the inertia phase in accordance with the input torque, and a gradient based on the target hydraulic pressure and a predetermined time t.sub.TA. A first up-sweep of hydraulic pressure is performed by the apparatus with the gradient. A relatively gradual gradient .delta.P.sub.TA is set based on a target rotation change rate for the input rotational speed to provide a predetermined change amount when the hydraulic pressure becomes the target hydraulic pressure P.sub.TA. The control apparatus performs a second up-sweep with the gradient .delta.P.sub.TA. When the rotational speed change .DELTA.N of the input rotation becomes a rotation change start-determining rotational speed dN.sub.S, the control apparatus feedback-controls the hydraulic pressure with a predetermined gradient while referring to the input rotation change. Further, the control apparatus detects the target shift start time and the rotational speed change rate at the target shift start time to correct the target hydraulic pressure P.sub.TA, the gradient .delta.P.sub.TA of the second sweep section, and the target shift start time t.sub.aim.

摘要翻译： 一种用于自动变速器的液压控制装置，包括基于微处理器的控制单元，用于控制供应到摩擦接合元件的液压伺服的液压。 控制装置根据输入转矩和基于目标液压和规定时间tTA的梯度，计算出惯性阶段开始时的条件的目标液压PTA。 液压的第一次上升是由具有梯度的装置进行的。 基于用于输入转速的目标旋转变化率来设定相对逐渐的梯度ΔPTA，以在液压成为目标液压PTA时提供预定的变化量。 控制装置用梯度ΔPTA执行第二次上扫。 当输入旋转的转速变化DELTA N变为旋转变化开始判定转速dNS时，控制装置参照输入的转动变化以预定的斜率反馈控制液压。 此外，控制装置检测目标换档开始时刻的目标换档开始时间和转速变化率，以校正目标液压PTA，第二扫描部分的斜率ΔPTA和目标换档开始时间taim。