Automatic transmission control apparatus
    1.
    发明授权
    Automatic transmission control apparatus 失效
    自动变速器控制装置

    公开(公告)号:US5749802A

    公开(公告)日:1998-05-12

    申请号:US646467

    申请日:1996-05-08

    摘要: An automatic transmission control apparatus has first and second hydraulic servos for engaging forward and reverse driving friction engaging elements, respectively, a fluid pressure control unit, a range shift detector, and an electronic control unit. When the forward driving range is selected, the fluid pressure control unit supplies a forward driving range pressure to the hydraulic servo via a changeover valve operated by a signal pressure from a normal open-type solenoid valve, when the signal pressure is drained. When the reverse driving range is selected, the electronic control unit outputs a signal to magnetize the solenoid valve. The solenoid valve is thus turned on to discontinue the drain. The control apparatus thus prevents low pressure in the reverse driving range pressure to prevent delay of engagement of the clutch.

    摘要翻译: 一种自动变速器控制装置具有用于分别接合前进和后退驱动摩擦接合元件的第一和第二液压伺服机构,流体压力控制单元,量程换档检测器和电子控制单元。 当选择正向驱动范围时,当信号压力被排出时,流体压力控制单元通过由来自正常开式电磁阀的信号压力操作的转换阀向液压伺服机构供给正向行驶范围压力。 当选择反向驱动范围时,电子控制单元输出一个信号来磁化电磁阀。 因此,电磁阀被打开以中止排水。 因此,控制装置防止反向驱动范围压力中的低压,以防止离合器的接合延迟。

    Automatic transmission control apparatus
    2.
    发明授权
    Automatic transmission control apparatus 失效
    自动变速器控制装置

    公开(公告)号:US5707316A

    公开(公告)日:1998-01-13

    申请号:US646635

    申请日:1996-05-08

    摘要: An automatic transmission control apparatus has a clutch, a hydraulic servo for the clutch, a fluid pressure control unit, a range shift detector, and an electronic control unit. The fluid pressure control unit has a manual valve, a pressure regulating valve device, and a changeover valve device. The electronic control unit controls the changeover valve device and the pressure regulating valve device. Immediately after a shift to the forward driving range, the electronic control unit holds the changeover valve device in such a state that a forward driving range pressure is supplied without passing through the pressure regulating valve device. Then, the electronic control unit shifts the changeover valve device to such a state that a regulated pressure is supplied from the pressure regulating valve device, which has been switched to a pressure regulating state by the electronic control unit. This control operation precisely sets the fluid pressure changeover timing and the initial fluid pressure.

    摘要翻译: 一种自动变速器控制装置具有离合器,用于离合器的液压伺服机构,流体压力控制单元,量程变速检测器和电子控制单元。 流体压力控制单元具有手动阀,压力调节阀装置和切换阀装置。 电子控制单元控制切换阀装置和压力调节阀装置。 在转移到前进行驶范围之后,电子控制单元将转换阀装置保持在提供正向行驶范围压力而不通过压力调节阀装置的状态。 然后,电子控制单元将切换阀装置移动到由电子控制单元切换到压力调节状态的调压阀装置供给调节压力的状态。 该控制操作精确地设定流体压力切换定时和初始流体压力。

    Control system for a single servo during multiple speed changes
    4.
    发明授权
    Control system for a single servo during multiple speed changes 失效
    多个速度变化时单伺服控制系统

    公开(公告)号:US5941795A

    公开(公告)日:1999-08-24

    申请号:US833389

    申请日:1997-04-04

    摘要: The present invention prevents shift shock and reduces time required to execute the complete speed change operation in the case where a second speed change is commanded while a first speed change operation is still in progress. If a down-shift to a first speed stage is commanded during an up-shift operation from the first to the second speed, the hydraulic pressure in the second speed change operation is controlled in accordance with the state of the first speed change operation at the time of generation of the command for the second speed change. For example, if a down-shift to the first speed stage is commanded during the torque phase of an up-shift operation from first to second speeds, namely, before change in the rotational speed of the input shaft has started, only completion control of the down-shift operation is executed. On the other hand, if the down-shift to the first speed stage is commanded during the inertia phase of the up-shift operation, namely, after the speed change has been started, hydraulic control of the down-shift is started with the initial speed change control.

    摘要翻译: 本发明在第一变速操作仍在进行中,在第二变速指令的情况下,能够防止变速冲击,并减少执行完全变速操作所需的时间。 如果在从第一速度到第二速度的升档操作期间指令到第一速度档位的下降,则根据第二变速操作中的第一变速操作的状态来控制第二变速操作中的液压 生成第二速变化命令的时间。 例如,如果在从第一速度到第二速度的升档操作的扭矩阶段期间,即在输入轴的转速的变化已经开始之前指令到第一速度级的下降,则仅完成控制 执行降档操作。 另一方面,如果在升档操作的惯性阶段(即在变速开始之后)指令到第一速度级的下降,则下降的液压控制开始于初始 变速控制。

    Control system for automatic transmission
    6.
    发明授权
    Control system for automatic transmission 失效
    自动变速器控制系统

    公开(公告)号:US5769753A

    公开(公告)日:1998-06-23

    申请号:US550965

    申请日:1995-10-31

    摘要: A control system for an automatic transmission which includes a fluid transmission unit. The control system includes a clutch applied in a forward running range; a hydraulic servo for applying the clutch responsive to an oil pressure; input and output R.P.M. sensors for detecting the input and output R.P.M.s of the fluid transmission unit; a stop state detector for detecting that the vehicle is stopped; a start detector for detecting start of the vehicle from a stop; and a control unit for controlling the oil pressure fed to the hydraulic servo. The oil pressure of the hydraulic servo is reduced, when the vehicle is stopped, to establish a neutral control state in which the clutch is released. A completely applied state of the clutch is established by boosting the oil pressure fed to the hydraulic servo when the shift of the vehicle from a stop to start is detected, in two stages. In the first stage the oil pressure fed to the hydraulic servo is boosted by adding a set shelf pressure to the base pressure until the clutch comes into a partially applied state and then, in the second stage, the oil pressure fed to the hydraulic servo is further boosted until the clutch becomes completely applied.

    摘要翻译: 一种用于自动变速器的控制系统,其包括流体传动单元。 该控制系统包括:一个向前运行的离合器; 液压伺服机构,用于响应于油压而施加离合器; 输入和输出R.P.M. 用于检测流体传动单元的输入和输出R.P.M.s的传感器; 用于检测车辆停止的停止状态检测器; 用于从停止检测车辆的起动的起动检测器; 以及用于控制供给到液压伺服机构的油压的控制单元。 当车辆停止时,液压伺服系统的油压降低,建立释放离合器的空档控制状态。 离合器的完全施加状态通过在两级检测到车辆从起停位移动时提高供给到液压伺服机构的油压来建立。 在第一阶段,通过向基座压力添加设定的搁板压力直到离合器处于部分施加状态,然后在第二阶段中,供给到液压伺服机构的油压被提供给液压伺服机构的油压 进一步升高直到离合器完全施加。

    Control system for automatic transmission
    7.
    发明授权
    Control system for automatic transmission 失效
    自动变速器控制系统

    公开(公告)号:US5741201A

    公开(公告)日:1998-04-21

    申请号:US645958

    申请日:1996-05-10

    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。

    Shift control device for automatic transmission
    10.
    发明授权
    Shift control device for automatic transmission 失效
    换档控制装置,用于自动变速器

    公开(公告)号:US6102830A

    公开(公告)日:2000-08-15

    申请号:US56793

    申请日:1998-04-08

    摘要: When a shift to a second gear ratio (second ratio) is determined during a shift control for a first shift (shift from fourth ratio to third ratio), the process status, or circumstances, of the first shift is determined using a hydraulic pressure for a fourth brake being engaged at the determination. When the process status, that is, the process circumstances, is in early phase, the first shift is interrupted and shift control for the direct shift to the second ratio (shift from fourth ratio to second ratio) is performed (first shift pattern). When the process status is in a late phase, the first shift control is continued, and after ending of the first shift control, the control for the shift to the second gear ratio (shift from third ratio to second ratio) is performed (second shift pattern). In the case of power off state, the second shift pattern is performed irrespective of the process status.

    摘要翻译: 当在第一班次的换档控制(从第四档次向第三档位转换)中确定换档到第二变速比(第二档位)时,第一变速档的处理状态或状态是使用液压 在确定时接合第四制动器。 当处理状态即处理情况处于早期阶段时,第一班次被中断,并且执行从第四比例到第二比例的直接班次的换档控制(第一班班模式)。 当过程状态处于后期阶段时,第一变速控制继续进行,并且在第一变速控制结束之后,进行向第二变速比的换档(从第三速比向第二转速)的控制(第二变速 模式)。 在断电状态的情况下,与处理状态无关地执行第二移位模式。