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    • 22. 发明授权
    • Pneumatic brake booster with improved valve
    • 带改进阀的气动制动助力器
    • US6044749A
    • 2000-04-04
    • US117298
    • 1998-07-24
    • Juan Simon Bacardit
    • Juan Simon Bacardit
    • B60T13/57B60T13/72F15B9/10F15B13/16
    • B60T13/57B60T13/72
    • A pneumatic brake booster having a casing (10) which is divided in a leaktight fashion by at least one movable wall (12) into a front chamber (14) and a rear chamber (16). A pneumatic piston (20) attached to the movable wall (12) has a tubular rear part (22) which extends through the casing (10). A three-way valve (36) which slides in a bore (26) of a pneumatic piston (20) has a valve element which interacts with a first valve seat (28a) formed on a plunger (28) and a second valve seat (20a) formed on the pneumatic piston (20) in response to an operating rod (30) moving a plunger (28) to selectively connects the rear chamber (16) to the front chamber (14) and to a source of high pressure to develop a pressure differential across the movable wall (12). A rear position of rest for the plunger (28) wherein the rear chamber (16) is connected to the front chamber (14) is defined by a front end (32) of a sleeve (34) located in the tubular rear part (22) of the pneumatic piston (20). The plunger (28) has a cylindrical rear part which slides on a front end (32) of the sleeve (34) and the sleeve (34) slides in a leaktight fashion in the bore (26) in response to movement of the operating rod (30). A return spring (38) is located between the pneumatic piston (20) and plunger (28) to permit un-interrupted communication from the high pressure source to the rear chamber (16) on movement of the plunger (28).
    • PCT No.PCT / FR98 / 01327 Sec。 371日期:1998年7月24日 102(e)1998年7月24日PCT PCT 1996年6月24日PCT公布。 出版物WO99 /​​ 00284 日期1999年1月7日一种具有壳体(10)的气动制动助力器,该壳体(10)以至少一个可动壁(12)以密封方式分成前室(14)和后室(16)。 附接到可移动壁(12)的气动活塞(20)具有延伸穿过壳体(10)的管状后部(22)。 在气动活塞(20)的孔(26)中滑动的三通阀(36)具有与形成在柱塞(28)和第二阀座(28)上的第一阀座(28a)相互作用的阀元件 20a),其响应于使柱塞(28)移动以选择性地将后室(16)连接到前室(14)的操作杆(30)而形成在气动活塞(20)上并且成为高压源 跨越可移动壁(12)的压力差。 后室(16)连接到前室(14)的柱塞(28)的后部位置由位于管状后部(22)中的套筒(34)的前端(32)限定, )的气动活塞(20)。 柱塞(28)具有圆柱形的后部,其在套筒(34)的前端(32)上滑动,并且套筒(34)响应于操作杆的移动而以密封的方式在孔(26)中滑动 (30)。 复位弹簧(38)位于气动活塞(20)和柱塞(28)之间,以允许在柱塞(28)移动时从高压源到后室(16)的不间断的连通。
    • 23. 发明授权
    • Method of operating a pneumatic brake servo-unit
    • 操作气动制动伺服单元的方法
    • US6006648A
    • 1999-12-28
    • US945867
    • 1998-01-26
    • Alfred Eckert
    • Alfred Eckert
    • B60T13/52B60T13/66B60T13/72F15B13/16
    • B60T13/72B60T13/662
    • To extend the control range of the pressure control in a brake system which is equipped with a brake power booster that is operable irrespective of the driver's wish, preferably electromagnetically, according to the present invention, the hydraulic pressure introduced into a master brake cylinder connected downstream of the brake power booster is determined and, following a comparison with a preset pressure value signal, is sent to a pressure controller having an output quantity which corresponds to a control current for the solenoid and is supplied to a limiter that determines the limit values of the desired control range, and the output quantity of the limiter is compared with the value of the current supplied to the solenoid. Subsequently, the comparison result is sent to a current controller which generates the voltage to be applied to the solenoid.
    • PCT No.PCT / EP97 / 00988 Sec。 371日期:1998年1月27日 102(e)日期1998年1月26日PCT 1997年2月28日PCT公布。 出版物WO97 / 32768 日期1997年9月12日为了将根据本发明的装备有制动助力器的制动系统中的压力控制的控制范围扩展为可操作的,无论驾驶员的愿望,优选电磁地操作,将引入到 确定连接在制动助力器下游的主制动缸,并且在与预设压力值信号进行比较之后,将其发送到具有对应于螺线管的控制电流的输出量的压力控制器,并将其提供给限制器 确定所需控制范围的极限值,并将限制器的输出量与提供给螺线管的电流值进行比较。 随后,将比较结果发送到电流控制器,该电流控制器产生施加到螺线管的电压。
    • 27. 发明授权
    • Method and apparatus for controlling an implement of a work machine
using linkage angles
    • 使用联动角度控制作业机械的工具的方法和装置
    • US5875701A
    • 1999-03-02
    • US871087
    • 1997-06-09
    • Michael A. CoboHans P. DietzCynthia M. GardnerRobert E. Stone
    • Michael A. CoboHans P. DietzCynthia M. GardnerRobert E. Stone
    • E02F3/43E02F9/20E02F9/22F15B9/09F15B13/16
    • F15B9/09E02F3/431E02F9/2029E02F9/2214
    • An apparatus for controllably moving a work implement is disclosed. The implement is connected to a work machine and is moveable in response to operation of a hydraulic cylinder. The apparatus includes an operator controlled joystick. A joystick position sensor senses the position of the joystick and responsively generates an operator command signal. Boom and bucket angle sensors sense the position of the work implement and responsively produces an boom angle signal and a bucket angle signal respectively. A microprocessor based controller receives the boom angle, bucket angle, and operator command signals, modifies the operator command signal, and produces an electrical valve signal in response to the modified operator command signal. An electrohydraulic valve receives the electrical valve signal, and controllably provides hydraulic fluid flow to the hydraulic cylinder in response to a magnitude of the electrical valve signal.
    • 公开了一种用于可控地移动工作装置的装置。 工具连接到作业机器,并且可以响应于液压缸的操作而移动。 该装置包括操作者控制的操纵杆。 操纵杆位置传感器感测操纵杆的位置,并响应地产生操作员指令信号。 起重臂和铲斗角度传感器感测工作装置的位置,并分别响应地产生起重臂角度信号和铲斗角度信号。 基于微处理器的控制器接收起重臂角度,铲斗角度和操作员指令信号,修改操作员指令信号,并响应修改的操作员指令信号产生电气阀信号。 电动液压阀接收电动阀信号,并且响应于电动阀信号的大小可控地向液压缸提供液压流体流。