Hydraulic clutch control of vehicle power train
    33.
    发明授权
    Hydraulic clutch control of vehicle power train 有权
    汽车动力传动系液压离合器控制

    公开(公告)号:US07043347B2

    公开(公告)日:2006-05-09

    申请号:US10648826

    申请日:2003-08-27

    IPC分类号: G06F10/00 F16H31/00

    摘要: A hydraulic clutch transmits driving torque in a power train of a vehicle. An oil pressure supply unit supplies oil pressure for engagement to the clutch and a controller controls the unit. The controller causes the unit, prior to engagement of the clutch, to precharge the interior of the clutch with hydraulic fluid. The controller counts an elapsed time since the last release of the clutch and shortens the precharge period as the elapsed time decreases, thereby optimizing the precharge state of the clutch.

    摘要翻译: 液压离合器在车辆的动力传动系中传递驱动扭矩。 油压供应单元提供用于接合到离合器的油压,并且控制器控制该单元。 在离合器接合之前,控制器使该单元在液压流体中对离合器的内部进行预充电。 控制器对离合器的最后一次释放后的经过时间进行计数,并且随着经过时间的减少而缩短预充电期间,从而优化离合器的预充电状态。

    Control device for controlling V-belt continuously variable transmission
    34.
    发明申请
    Control device for controlling V-belt continuously variable transmission 有权
    用于控制V型带无级变速器的控制装置

    公开(公告)号:US20050070402A1

    公开(公告)日:2005-03-31

    申请号:US10947201

    申请日:2004-09-23

    摘要: A control device for controlling a continuously variable transmission (5) is disclosed. The control device has an oil pressure control unit (100) which supplies an oil pressure to a primary pulley (10) and secondary pulley (11) based on a command signal indicative of a target speed-reduction ratio, a sensor (26) which detects a rotation speed (Np1) of the primary pulley (26), and a controller (20) which transmits the command signal indicative of the target speed-reduction ratio to the oil pressure control unit (100). The controller is programmed to set the target speed-reduction ratio to a first speed-reduction ratio (R1); calculate a first predetermined rotation speed (N1) of the primary pulley at which the V-belt reaches a first limiting temperature (T1) at the first speed-reduction ratio (R1); calculate a first elapsed time after the detected rotation speed (Np1) of the primary pulley exceeds the first predetermined rotation speed (N1); maintain the first speed-reduction ratio (R1) when the first elapsed time is equal to or less than a first predetermined time; and set the target speed-reduction ratio to a second speed-reduction ratio (R2) smaller than the first speed-reduction ratio (R1) when the first elapsed time exceeds the first predetermined time. At the second speed-reduction ratio (R2), the temperature of the V-belt should become equal to or less than the first limiting temperature (T1) throughout the permitted rotation speed region of the primary pulley. Thus, starting acceleration performance of the continuously variable transmission is enhanced.

    摘要翻译: 公开了一种用于控制无级变速器(5)的控制装置。 控制装置具有油压控制单元(100),其基于表示目标减速比的指令信号向主滑轮(10)和次滑轮(11)供给油压;传感器(26),其 检测主滑轮(26)的转速(Np1),以及向油压控制单元(100)发送表示目标减速比的指令信号的控制器(20)。 控制器被编程为将目标减速比设置为第一减速比(R1); 以所述第一减速比(R1)计算所述V型带达到第一极限温度(T1)的所述主带轮的第一预定转速(N1); 计算出初级带轮的检测转速(Np1)超过第一预定转速(N1)之后的第一经过时间; 当第一经过时间等于或小于第一预定时间时,保持第一减速比(R1); 并且当所述第一经过时间超过所述第一预定时间时,将所述目标减速比设定为小于所述第一减速比(R1)的第二减速比(R2)。 在第二减速比(R2)下,V带的温度在初级带轮的整个允许转速区域内应变得等于或小于第一极限温度(T1)。 因此,提高了无级变速器的起动加速性能。

    Linear solenoid valve control device

    公开(公告)号:US20050028866A1

    公开(公告)日:2005-02-10

    申请号:US10912281

    申请日:2004-08-06

    摘要: Disclosed is a control device for controlling a two-way linear solenoid valve (60) including a pressure regulating port (60p) which communicates with a hydraulic circuit side, a drain port (60d) which communicates with a drain side, a plunger (61) which controls the state of communication between the pressure regulating port and drain port, and a coil (70) which drives the plunger in accordance with an exciting current. The control device has a current generator (65) which supplies the coil with the exciting current corresponding to a duty signal; and a microcomputer (1). The microcomputer determines whether or not a preset foreign matter removal starting condition for removing foreign matter accumulated in the ports has been established. When the foreign matter removal starting condition is established, the microcomputer sets a variation pattern for a current command value in the form of a rectangular wave having a preset maximum current command value (A1) and a preset minimum current command value (A0), and transmit to the current generator a first duty signal corresponding to the maximum current command value and a second duty signal corresponding to the minimum current command value. The microcomputer further determines whether or not a preset foreign matter removal completion condition has been established. When the foreign matter removal completion condition is established, the microcomputer terminates the setting of the rectangular wave variation pattern.