Control system for torque converter
    81.
    发明授权
    Control system for torque converter 失效
    变矩器控制系统

    公开(公告)号:US5435211A

    公开(公告)日:1995-07-25

    申请号:US85795

    申请日:1993-07-06

    Abstract: A control system for a torque converter includes a lockup clutch provided in the converter for connecting input and output shafts of the torque converter directly. The lockup clutch includes an engaging chamber and a releasing chamber. The control system further includes a lockup shift valve for selectively switching communication between a fluid line, having a predetermined pressure, and the engaging chamber and communication between the fluid line and the releasing chamber. A lockup control valve is provided for controlling a pressure difference between fluid pressures in the engaging chamber and the releasing chamber and a control valve is provided for controlling the lockup clutch so that it engages completely. A first on-off solenoid valve controls the lockup shift valve, a duty solenoid valve controls the lockup control valve, and a second on-off solenoid valve controls the control valve.

    Abstract translation: 用于变矩器的控制系统包括设置在转换器中用于直接连接变矩器的输入和输出轴的锁止离合器。 锁止离合器包括接合室和释放室。 控制系统还包括锁止换档阀,用于选择性地切换具有预定压力的流体管线与接合室之间的连通以及流体管线和释放室之间的连通。 提供一种锁止控制阀,用于控制接合室和释放室中的流体压力之间的压力差,并且设置控制阀以控制锁止离合器使其完全啮合。 第一通断电磁阀控制锁止换档阀,负载电磁阀控制锁止控制阀,第二开关电磁阀控制控制阀。

    Valve and hydraulic system for operating a friction element of an
automatic transmission
    82.
    发明授权
    Valve and hydraulic system for operating a friction element of an automatic transmission 失效
    用于操作自动变速器摩擦元件的阀和液压系统

    公开(公告)号:US5429560A

    公开(公告)日:1995-07-04

    申请号:US82634

    申请日:1993-06-28

    CPC classification number: F16H61/0276 F16H61/065 F16H61/0267 Y10T477/6936

    Abstract: A valve (36) for controlling pressure supplied to a friction clutch (32) of an automatic transmission includes several valve spools (38,40,44) each formed with control lands located within a bore (42) opening to various ports (60,66,68,72,76,80) that are supplied selectively with line pressure depending upon the operating state of the transmission. The valve operates in a primed condition, whereby a predetermined low pressure is supplied continually to the friction clutch. The valve supplies the clutch with a higher pressure that operates to stroke the clutch cylinder and friction element and thereafter regulates clutch pressure in accordance with changes in pressure in one of the ports. The clutch is stroked rapidly because the valve provides a relatively unrestricted supply of pressurized fluid through one of its inlet ports. After the clutch free-pack clearances are taken up, the valve restricts the clutch stroke against a cushion spring by opening the clutch cylinder to an orificed supply circuit. A delayed response to a change in operating state of the valve is minimized such that the control lands of the valve spools do not fully open line pressure supplied to the valve.

    Abstract translation: 用于控制供应到自动变速器的摩擦离合器(32)的压力的阀(36)包括多个阀芯(38,40,44),每个阀芯形成有位于通孔(42)内的控制焊盘, 66,68,72,76,80),其根据变速器的操作状态选择性地供给管路压力。 阀门处于起动状态,从而将预定的低压力连续供给到摩擦离合器。 阀向离合器提供更高的压力,该压力用于冲击离合器气缸和摩擦元件,然后根据其中一个端口中的压力变化来调节离合器压力。 由于阀门通过其一个入口端口提供相对不受限制的加压流体供应,所以离合器快速地被冲击。 在离合器自由包装间隙被吸收之后,阀通过将离合器气缸打开到供油回路来限制离合器行程抵靠缓冲弹簧。 对阀的操作状态的变化的延迟响应被最小化,使得阀芯的控制台不能完全打开供应到阀的管线压力。

    Variable synchronous window
    83.
    发明授权
    Variable synchronous window 失效
    变量同步窗口

    公开(公告)号:US5413012A

    公开(公告)日:1995-05-09

    申请号:US116627

    申请日:1993-09-07

    Applicant: Alan R. Davis

    Inventor: Alan R. Davis

    Abstract: A control system/method for controlling the shifting of automated mechanical transmission systems (10) is provided. The control system/method (FIG. 4 ) defines the synchronous window ((OS*GR.sub.T)+X.gtoreq.IS.sub.E >(OS*GR.sub.T)-Y) for jaw clutch engagement (for shifts other than compound upshifts) where X and Y are each greater than zero and the total synchronous window (X+Y) equals the greater of a function (fGR.sub.T) of the numerical value of the target ratio (GR.sub.T) or a minimum value ((X+Y) min).

    Abstract translation: 提供了一种用于控制自动机械传动系统(10)的移动的控制系统/方法。 控制系统/方法(图4)定义用于爪式离合器接合的同步窗口((OS * GRT)+ X> / = ISE>(OS * GRT)-Y)(用于除了复合升档之外的班次),其中X和 Y大于零,总同步窗(X + Y)等于目标比(GRT)的数值或最小值((X + Y)min)的函数(fGRT)中的较大者。

    Automatic transmission control system
    84.
    发明授权
    Automatic transmission control system 失效
    自动变速器控制系统

    公开(公告)号:US5409427A

    公开(公告)日:1995-04-25

    申请号:US12120

    申请日:1993-02-01

    Abstract: An automatic transmission control system couples frictional coupling element, such as a low reverse brake, so that the frictional coupling element provides different torque transmissive capacities in a reverse gear and a first gear in which engine braking is available. The system includes a pressure regulator which regulates a coupling pressure, by which the frictional coupling element is coupled and which is controlled and gradually supplied to the frictional coupling element, during a shifting of the automatic transmission to a reverse gear. The pressure regulator is disabled from regulating the coupling pressure in the reverse gear.

    Abstract translation: 自动变速器控制系统将摩擦联接元件(例如低倒档制动器)联接,使得摩擦联接元件在倒档齿轮和可用于发动机制动的第一档中提供不同的扭矩传递能力。 该系统包括调节耦合压力的压力调节器,通过该压力调节器将摩擦联接元件联接并且在将自动变速器换档到倒档时被控制并逐渐地供给到摩擦联接元件。 压力调节器禁止调节倒档中的联轴器压力。

    Control apparatus for hydraulically operated vehicular transmission
    85.
    发明授权
    Control apparatus for hydraulically operated vehicular transmission 失效
    液压操纵车辆变速箱控制装置

    公开(公告)号:US5409421A

    公开(公告)日:1995-04-25

    申请号:US252352

    申请日:1994-06-01

    Abstract: A control apparatus for a hydraulically operated vehicular transmission has a plurality of hydraulic engaging elements including a first hydraulic engaging element which is kept engaged in a plurality of transmission trains. The control apparatus has an accumulator which is connected, via a branched oil passage, to a working oil passage which is communicated with the first hydraulic engaging element. It also has a control valve which is disposed in the branched oil passage and which can be moved between a first position in which an upstream portion of the branched oil passage on a side of the first hydraulic engaging element and a downstream portion of the branched oil passage on a side of the accumulator are brought into communication with each other and a second position in which the communication is shut off. It further has an oil discharge passage which is connected to a second hydraulic engaging element when the second hydraulic engaging element is disengaged. This oil discharge passage is arranged to be connected to the downstream portion of the branched oil passage in the second position of the control valve.

    Abstract translation: 用于液压操作车辆变速器的控制装置具有多个液压接合元件,其包括保持接合在多个传动系中的第一液压接合元件。 控制装置具有经由分支油路连接到与第一液压接合元件连通的工作油路的蓄压器。 它还具有控制阀,该控制阀设置在分支油路中,并且能够在第一位置与第一液压啮合元件一侧的分支油路的上游部分与分支油的下游部分之间移动 在蓄能器的一侧上的通道彼此连通并且第二位置中的通信被切断。 另外还有一个排油通道,当第二液压啮合元件脱开时,它连接到第二液压啮合元件。 该排油通道设置成在控制阀的第二位置连接到分支油路的下游部分。

    Speed stage shifting of automatic transmission by reduction of servo oil
pressure to slip limit stand-by pressure and subsequent decrements
    89.
    发明授权
    Speed stage shifting of automatic transmission by reduction of servo oil pressure to slip limit stand-by pressure and subsequent decrements 失效
    通过减少伺服油压到滑差极限待机压力和随后的减量,自动变速器的转速级换档

    公开(公告)号:US5363724A

    公开(公告)日:1994-11-15

    申请号:US952981

    申请日:1992-09-29

    Abstract: In a certain speed stage shifting of an automatic transmission of a vehicle including a speed change gear mechanism including rotary members such as gears and gear carriers and hydraulically operated friction engaging brakes and clutches adapted to provide various speed stages according to selective engagement and disengagement of the friction engaging brakes and clutches, the servo oil pressure of a first friction engaging brake is immediately lowered down to a stand-by pressure marginally higher than a threshold pressure bordering non sliding and sliding of the first friction engaging brake at the start of a change-over of a second friction engaging brake is and then, when a substantial change-over of the second friction engaging means started, the servo oil pressure is further lowered across the threshold pressure and thereafter periodically lowered by a decrement the magnitude of which may desirably be increased along with a lapse of time.

    Abstract translation: 在包括包括诸如齿轮和齿轮架的旋转构件的变速齿轮机构的车辆的自动变速器的特定速度级变速器中,以及液压操作的摩擦接合制动器和离合器,其适于根据所选择的接合和分离来提供各种速度级 摩擦接合制动器和离合器,第一摩擦接合制动器的伺服油压力立即降低到稍微高于在变速开始时第一摩擦接合制动器的非滑动和滑动的阈值压力的待机压力, 然后在第二摩擦接合装置的实质切换开始时,伺服油压力进一步降低超过阈值压力,然后周期性地减小减小量,其量值可能期望地为 随着时间的推移而增加。

    Supplemental front wheel drive control system and method
    90.
    发明授权
    Supplemental front wheel drive control system and method 失效
    补充前轮驱动控制系统及方法

    公开(公告)号:US5361208A

    公开(公告)日:1994-11-01

    申请号:US623155

    申请日:1990-12-06

    Abstract: An electronic control is provided for controlling the drive speed of a supplemental drive relative to an engine driven main drive of a vehicle. A fluid pump driven by the engine provides pressurized fluid flow. The supplemental drive is driven by the pressurized fluid. A main drive sensor senses the speed of the main drive and responsively produces a main drive speed signal. A command knob is provided for selecting a desired speed relationship between the main and supplemental drives. A knob sensor senses the position of the command knob and responsively produces a modifier signal. A modifier circuit receives the main drive speed and modifier signals and responsively produces a modified main drive speed signal. A supplemental drive sensor senses the speed of the supplemental drive and responsively produces a supplemental drive speed signal. A processor produces an error signal responsive to a difference between received modified main and supplemental drive speed signals. The processor produces a first signal responsive to a product of the error signal and a preselected constant, produces a second signal responsive to an integral of the error signal, produces a third signal responsive to a derivative of the error signal and produces a pump control signal in response to a sum of the first, second, and third signals. An actuator receives the pump control signal and responsively adjusts the pump output.

    Abstract translation: 提供一种电子控制装置,用于控制相对于车辆的发动机驱动的主驱动装置的辅助驱动装置的驱动速度。 由发动机驱动的流体泵提供加压的流体流。 补充驱动由加压流体驱动。 主驱动传感器感测主驱动器的速度并且响应地产生主驱动速度信号。 提供了一个命令旋钮,用于选择主驱动器和补充驱动器之间所需的速度关系。 旋钮传感器检测指令旋钮的位置,并响应地产生修正信号。 修正器电路接收主驱动速度和修正信号,并且响应地产生修改的主驱动速度信号。 补充驱动传感器感测补充驱动器的速度并且响应地产生辅助驱动速度信号。 处理器响应于所接收的修改的主要和补充的驱动速度信号之间的差异产生误差信号。 处理器产生响应于误差信号和预选常数的乘积的第一信号,响应于误差信号的积分产生第二信号,产生响应于误差信号的微分的第三信号,并产生泵控制信号 响应于第一,第二和第三信号的总和。 执行器接收泵控制信号并响应于调节泵输出。

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