Anti-skid apparatus for automotive vehicle
    41.
    发明授权
    Anti-skid apparatus for automotive vehicle 失效
    汽车防滑装置

    公开(公告)号:US5461565A

    公开(公告)日:1995-10-24

    申请号:US929408

    申请日:1992-08-14

    CPC分类号: B60T8/17616

    摘要: An anti-skid apparatus for installation in a vehicle braking system includes an electrically operated actuator arranged to control hydraulic brake pressure applied to each wheel brake cylinder of road wheels of the vehicle and an electronic control device for applying an electric control signal to the actuator in response to electric signals indicative of each rotational speed of the road wheels so that the actuator is operated to decrease or increase the brake pressure when the rotational speed of the road wheels in braking operation becomes lower than a reference speed the value of which is defined on a basis of a travel, speed of the vehicle. The electronic control device is designed to detect a step on a travel road of the vehicle in braking operation and to compare the rotational speed of the road wheels with a subtracted value of the reference speed when the step on the travel road has been detected within a predetermined time thereby to maintain the actuator in its deactivated condition when the rotational speed of the road wheels is larger than the subtracted value of the reference speed.

    摘要翻译: 用于安装在车辆制动系统中的防滑装置包括:电动致动器,其被布置成控制施加到车辆的车轮的每个车轮制动缸的液压制动压力;以及电子控制装置,用于向致动器施加电控制信号 响应于指示车轮的每个转速的电信号,使得当制动操作中的车轮的转速变得低于其值定义在其上的参考速度时,致动器被操作以降低或增加制动压力 旅行的基础,车辆的速度。 电子控制装置被设计成在制动操作中检测车辆的行驶道路上的台阶,并且当在行驶道路中的步骤已被检测到时,将车轮的转速与基准速度的减去值进行比较 预定时间,从而当车轮的转速大于参考速度的减去值时,将致动器保持在停用状态。

    Anti-skid brake control system based on acceleration detection
    42.
    发明授权
    Anti-skid brake control system based on acceleration detection 失效
    基于加速度检测的防滑制动控制系统

    公开(公告)号:US5280432A

    公开(公告)日:1994-01-18

    申请号:US562991

    申请日:1990-08-06

    摘要: The anti-skid control system is constructed with a brake fluid pressure source for generating brake fluid pressure at high and low levers, a switching valve feeding either high pressure or low pressure to the wheel cylinders, a wheel velocity detecting device sensing the driving wheel rotating speed, an acceleration detecting device detecting the vehicle acceleration and a first arithmetic operation device for finding the estimated vehicle speed and the wheel rotating acceleration based on the wheel velocity detected by the wheel velocity detecting device and the vehicle body acceleration detected by the acceleration detecting device. A brake fluid pressure controlling device is provided for increasing, decreasing or maintaining the brake fluid pressure in the wheel cylinders, controlling the switching valve on the basis of wheel velocity, estimated vehicle speed, and wheel rotating acceleration. A second arithmetic operation device marks the minimum and maximum values in the wheel velocity after a brake fluid pressure reduction based on the wheel velocity detected by the wheel velocity detecting device calculates the recovery acceleration in the wheel velocity in the shift from the minimum value to the maximum value and compares the recovery acceleration with the set value. A vehicle acceleration correcting device corrects the vehicle body acceleration detected by the acceleration detecting device so as to set the vehicle body acceleration at a smaller value in case the recovery acceleration is less than the set value.

    摘要翻译: 防滑控制系统由制动液压源构成,用于在高低杆处产生制动液压,向轮缸供给高压或低压的切换阀;轮速检测装置,用于感测驱动轮旋转 速度,检测车辆加速度的加速度检测装置和用于根据由车轮速度检测装置检测的车轮速度和由加速度检测装置检测到的车体加速度来求出车速和车轮旋转加速度的第一算术运算装置 。 提供制动液压力控制装置,用于增加,减少或维持轮缸中的制动液压,根据车轮速度,估计车速和车轮转速加速度来控制切换阀。 第二算术运算装置在基于由车轮速度检测装置检测出的车轮速度的制动液压降低后的车轮速度中标记最小值和最大值,计算从最小值到最小值的车轮速度的恢复加速度 最大值,并将恢复加速度与设定值进行比较。 车辆加速度校正装置校正由加速度检测装置检测到的车体加速度,以便在恢复加速度小于设定值的情况下将车身加速度设定为较小的值。

    Anti-skid control system
    43.
    发明授权
    Anti-skid control system 失效
    防滑控制系统

    公开(公告)号:US5210693A

    公开(公告)日:1993-05-11

    申请号:US562992

    申请日:1990-08-06

    CPC分类号: B60T8/175

    摘要: The anti-skid control system is provided with wheel velocity sensors only for the driving wheels and yet is capable of performing the anti-skid control through its accurate estimation of the vehicle speed and proper compensatory control even when sharp braking occurs immediately upon the release of the accelerator after the occurrence of acceleration slip. The anti-skid control system is capable of starting the anti-skid control with certainty even when the braking operation is not detected because of a failure in the operation of the brake switch. The system is provided with a fluid pressure generating device, a fluid pressure controlling device, a brake operation detecting device, an acceleration detecting device, a wheel velocity detecting device, a braking force controlling device, a brake force correcting device and an acceleration slip detecting device.

    摘要翻译: 防滑控制系统仅提供用于驱动轮的车轮速度传感器,并且能够通过其对车速的准确估计和适当的补偿控制来执行防滑控制,即使在释放后立即发生急剧制动时 加速器发生加速滑动后。 即使由于制动开关的操作失败而没有检测到制动操作,防滑控制系统也能够确定地启动防滑控制。 该系统设置有流体压力生成装置,流体压力控制装置,制动操作检测装置,加速度检测装置,车轮速度检测装置,制动力控制装置,制动力校正装置和加速滑移检测 设备。

    Antiskid control system
    44.
    发明授权
    Antiskid control system 失效
    防滑控制系统

    公开(公告)号:US4912641A

    公开(公告)日:1990-03-27

    申请号:US263575

    申请日:1988-10-27

    CPC分类号: B60T8/172 B60T8/17636

    摘要: An antiskid control system is disclosed in which a single solenoid-operated switching valve connects a single wheel brake selectively to a high pressure or low pressure from a source of brake pressure. After the decompression of a wheel brake pressure, a repetitive intensifying operation is executed with a period of 40 msec in which an intensifying and a decompressing operation take place alternately. During the repetitive intensifying operation, the duty cycle for the intensifying operation is increased at a given rate. A flash intensification is executed immediately before the repetitive intensification. An initial value of the duty cycle for the repetitive intensification which occurs after the decompression of a second and a subsequent pass is chosen in proportion to the time duration of the previous repetitive intensifying operation and in inverse proportion to the immediately preceding decompressing interval.

    摘要翻译: 公开了一种防滑控制系统,其中单个电磁开关阀将单轮制动器选择性地连接到来自制动压力源的高压或低压。 在减速车轮制动压力之后,以40msec的周期执行重复增压操作,其中交替地进行增压和减压操作。 在重复强化操作期间,强化操作的占空比以给定的速率增加。 在重复强化之前立即执行闪电强化。 按照与先前的重复增压操作的持续时间成比例的方式选择在第二次和后续通过的解压缩之后发生的重复增强的占空比的初始值,并且与紧接在前的减压间隔成反比。

    Anti creep vehicle braking system allowing further additional braking
action application
    45.
    发明授权
    Anti creep vehicle braking system allowing further additional braking action application 失效
    防爬车制动系统允许进一步额外的制动动作应用

    公开(公告)号:US4497395A

    公开(公告)日:1985-02-05

    申请号:US350571

    申请日:1982-02-22

    IPC分类号: B60T7/04 G05G1/32 B60K41/28

    摘要: An anti creep braking system for a vehicle. A force transmission member is drivingly coupled to a part of the brake pedal and transmits braking force to a braking force generation system. A braked member is selectively braked by a braking device, and is driven by the brake pedal with a one direction force transmission device being interposed on the path of transmission of force between the brake pedal and the braked member. The sense of force transmission of the one direction force transmission device is such that, when the movement of the braked member with respect to the vehicle is prevented by the braking device, the brake pedal may be further depressed to increase vehicle braking action without transmitting substantial force to the braked member, but may not be moved backwards to reduce vehicle braking action. A control system selectively controls the braking device so as to put it into operation and to release it from operation according to the operational conditions of the vehicle effected by the driver of the vehicle and/or skidding condition of the vehicle.

    摘要翻译: 一种用于车辆的抗蠕变制动系统。 力传递构件驱动地联接到制动踏板的一部分并将制动力传递到制动力产生系统。 制动部件被制动装置选择性地制动,并且由制动踏板驱动,其中单向力传递装置插入在制动踏板和制动部件之间的力传递路径上。 一方向力传递装置的力传递感使得当制动装置防止制动部件相对于车辆的运动时,可以进一步按压制动踏板以增加车辆制动动作而不传输实质的 对制动部件的力,但不能向后移动以减少车辆制动动作。 控制系统选择性地控制制动装置,使其投入运行,并根据车辆驾驶员所执行的车辆的操作条件和/或车辆的打滑状况将其解除操作。

    Regulator valve for hydraulic anti-skid apparatus
    46.
    发明授权
    Regulator valve for hydraulic anti-skid apparatus 失效
    液压防滑装置调节阀

    公开(公告)号:US4492414A

    公开(公告)日:1985-01-08

    申请号:US498855

    申请日:1983-05-27

    CPC分类号: B60T13/16 B60T8/4225

    摘要: A regulator valve for a hydraulic anti-skid apparatus, in which a first valve member in the form of a piston is reciprocable within a housing for the regulator valve and subdivides the interior of the housing into first and second chambers arranged to be respectively applied with a hydraulic power pressure from a fluid pump and a master cylinder pressure from a master cylinder, the first valve member being formed at its one end with a valve part exposed within the first chamber, and in which a second annular valve member is arranged in the first chamber coaxially with the first valve member and is formed at its one end with a first small diameter valve part cooperating with the valve part of the first valve member to form a first annular throttle for throttling the fluid flow from the pump to a fluid reservoir through the first chamber and at its other end with a second large diameter valve part cooperating with the inner end wall of the first chamber to form a second annular throttle for throttling the fluid flow after the first annular throttle is closed, the second valve member being resiliently loaded by a spring toward the inner end wall of the first chamber.

    摘要翻译: 一种用于液压防滑装置的调节阀,其中活塞形式的第一阀构件在用于调节阀的壳体内往复运动,并将壳体的内部细分成第一和第二腔室,所述第一和第二腔室分别被施加 来自流体泵的液压动力压力和来自主缸的主缸压力,第一阀构件在其一端形成有暴露在第一室内的阀部分,并且其中第二环形阀构件布置在 第一室与第一阀构件同轴并且在其一端处形成有与第一阀构件的阀部配合的第一小直径阀部分,以形成第一环形节流阀,用于节流从泵到流体储存器的流体流 通过第一室并且在其另一端具有与第一室的内端壁配合的第二大直径阀部件,以形成第二环形节流阀 为了在所述第一环形节气门关闭之后节流流体流动,所述第二阀构件通过弹簧弹性地装载到所述第一腔室的内端壁。