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1. 发明授权

US06247766B1 Brake control system with an isolation valve 有权
标题翻译：具有隔离阀的制动控制系统
公开(公告)号：US06247766B1
公开(公告)日：2001-06-19
申请号：US09304877
申请日：1999-05-04
申请人： Viswanathan Subramanian , Earl Wayne Lloyd , David Fredrick Reuter , William Dale Cornwell , Sanjay Manilal Patel
发明人： Viswanathan Subramanian , Earl Wayne Lloyd , David Fredrick Reuter , William Dale Cornwell , Sanjay Manilal Patel
IPC分类号： B60T836
CPC分类号： F16K31/0665 , B60T7/12 , B60T8/365 , B60T8/4872 , B60T13/686
摘要： A vehicle braking system has a self-apply control which is effective to control the vehicle wheels under braking situations, traction control situations and chassis control situations. The self-apply control includes an electronic control unit (ECU) to establish the operation of the brakes. A positive displacement pump is utilized to provide fluid during self-apply operation. The output pressure of the pump is controlled by a variable pressure isolation valve which is controlled by the ECU to establish the maximum pressure required during each situation such that excess fluid pressure is not generated at the pump. the isolation valve has a stepped diameter bore in which a valve spool is disposed. The valve spool and the bore cooperate to form a unique dampening structure. The valve land and the bore wall form a flow restriction to and from a dampening chamber formed by the bore step and the valve land. This dampening reduces the pressure pulsation at the pump outlet for improved performance in the brake control system.
摘要翻译：车辆制动系统具有自适应控制，其有效地在制动状况，牵引力控制情况和底盘控制情况下控制车轮。自动施加控制包括用于建立制动器的操作的电子控制单元（ECU）。利用正排量泵在自动施加操作期间提供流体。泵的输出压力由可控压力隔离阀控制，该阀由ECU控制，以确定在每种情况下所需的最大压力，使得在泵处不产生过量的流体压力。隔离阀具有一个台阶式直径孔，其中设有一个阀芯。阀芯和孔配合形成独特的阻尼结构。阀盖和孔壁形成一个流动限制器，该流量限制器由一个由钻孔台阶和阀门区域形成的阻尼室。这种阻尼减轻了泵出口处的压力脉动，以改善制动控制系统的性能。

2. 发明授权

US06705083B2 Master cylinder having a compact profile 失效
标题翻译：主缸具有紧凑型材
公开(公告)号：US06705083B2
公开(公告)日：2004-03-16
申请号：US10210709
申请日：2002-07-31
申请人： Alfred Carl Vennemeyer , Frank Gerard Pirrello , William Dale Cornwell
发明人： Alfred Carl Vennemeyer , Frank Gerard Pirrello , William Dale Cornwell
IPC分类号： B60T1126
CPC分类号： B60T11/20 , F16J10/02 , Y10T29/4927
摘要： The subject invention provides a master cylinder having a compact profile. In particular, the master cylinder comprises a hollow body having a continuous outer wall with a continuous thickness. An end wall is integrally formed with the outer wall at a first end to close an end of an integrally formed bore. A number of apertures are formed within the outer wall to provide fluid communication between the outer wall and the bore. A flange is also integrally formed with the outer wall at a second end to define a fully integrated master cylinder. The outer wall further includes thickened sections extending between an inner surface of the bore and a mounting surface with the thickened sections being at least 30 percent smaller than the inner diameter of the bore for providing the compact profile of the integrated master cylinder.
摘要翻译：本发明提供具有紧凑型材的主缸。特别地，主缸包括具有连续厚度的连续外壁的中空本体。端壁在第一端处与外壁一体地形成，以封闭整体形成的孔的端部。在外壁内形成许多孔，以在外壁和孔之间提供流体连通。凸缘也在第二端处与外壁一体地形成，以限定完全集成的主缸。外壁还包括在孔的内表面和安装表面之间延伸的加厚部分，其中加厚部分比孔的内径小至少30％，以提供整体主缸的紧凑型材。

3. 发明授权

US6019441A Current control method for a solenoid operated fluid control valve of an antilock braking system 失效
标题翻译：防抱死制动系统的电磁式流体控制阀的电流控制方法
公开(公告)号：US6019441A
公开(公告)日：2000-02-01
申请号：US946909
申请日：1997-10-09
申请人： Earl Wayne Lloyd , William Dale Cornwell
发明人： Earl Wayne Lloyd , William Dale Cornwell
IPC分类号： B60T8/36 , B60T8/50 , B60T8/66
CPC分类号： B60T8/363 , B60T8/36 , B60T8/5006
摘要： The solenoid control valves of a solenoid-operated automotive antilock braking system are cyclically controlled to enable the valves to operate in a stable, partially open position that provides a desired fluid flow while minimizing noise associated with acceleration and deceleration of the controlled fluid. After an incipient lock-up condition is detected and the solenoid valve has been energized to hold and/or permit a partial release of the brake pressure, the solenoid is initially de-energized for a defined interval designed to reduce the current to a scheduled value. In this interval, the solenoid current is re-circulated through a free-wheeling diode for a smooth decay, allowing the valve to slowly open in a smooth and stable fashion. Then the solenoid is pulse-width modulated (PWM) at a frequency and duty cycle designed to maintain the solenoid current at the scheduled value. The interval of PWM is relatively brief to avoid any instability associated with the current pulsation. At this point, the solenoid is re-energized just long enough to reach its steady state value, thereby returning the valve to a closed or nearly closed position, and completing the current control cycle. The solenoid is then de-energized and the cycle is repeated, allowing the controller to smoothly return the brake pressure to the system pressure while minimizing any attendant hydro-mechanical noise.
摘要翻译：螺线管操作的汽车防抱死制动系统的电磁控制阀被循环地控制，以使得阀能够在稳定的，部分打开的位置运行，其提供期望的流体流，同时最小化与受控流体的加速和减速相关联的噪声。在检测到初始的锁定状态并且电磁阀已通电以保持和/或允许制动压力的部分释放之后，螺线管最初被断电一段限定的间隔，设计成将电流减小到预定值。在此间隔内，螺线管电流通过续流二极管再循环，以使光滑衰减，从而使阀门以平稳和稳定的方式缓慢打开。然后，螺线管以频率和占空比进行脉宽调制（PWM），以将电磁线圈电流维持在预定值。 PWM的间隔相对较短，以避免与电流脉动相关的任何不稳定性。此时，螺线管被重新通电足够长以达到其稳定状态值，从而将阀返回到闭合或接近闭合位置，并完成电流控制周期。螺线管然后断电，重复循环，允许控制器平稳地将制动压力返回到系统压力，同时最小化任何伴随的水力机械噪声。

4. 发明授权

US5927832A Brake system control 失效
标题翻译：制动系统控制
公开(公告)号：US5927832A
公开(公告)日：1999-07-27
申请号：US854252
申请日：1997-05-09
申请人： Gary Chris Fulks , William Dale Cornwell , William Frank Borchers
发明人： Gary Chris Fulks , William Dale Cornwell , William Frank Borchers
IPC分类号： B60T8/40 , B60T8/42
CPC分类号： B60T8/4059 , B60T8/4275 , Y10S303/04
摘要： A brake system control apparatus comprising: a fluid brake system including a master cylinder containing a hydraulic fluid having a hydraulic pressure, a hydraulic pump having an output hydraulically coupled to the master cylinder, a motor coupled to and providing motive force to the hydraulic pump, a current sensing device coupled to the motor and providing an output signal indicative of electric current through the motor; and an electronic controller coupled to the current sensing device comprising a first sampler taking a first sample of the output signal a first time period after a start up of the motor, a second sampler taking a second sample of the output current a second time period after start up of the motor and a divider for determining a ratio of the first and second samples wherein the ratio is indicative of a hydraulic pressure in the master cylinder at the start up of the motor.
摘要翻译：一种制动系统控制装置，包括：流体制动系统，包括包含具有液压压力的液压流体的主缸，具有液压耦合到主缸的输出的液压泵，耦合到液压泵并向其提供动力的马达，耦合到所述电动机并且提供指示通过所述电动机的电流的输出信号的电流感测装置; 以及耦合到所述电流感测装置的电子控制器，包括：第一采样器，在所述电动机启动之后的第一时间段内接收所述输出信号的第一采样;第二采样器，在所述输出电流的第二采样之后的第二时间段启动电动机和用于确定第一和第二样品的比率的分压器，其中该比率表示在马达启动时主缸中的液压。

5. 发明授权

US5703748A Solenoid driver circuit and method 失效
标题翻译：电磁线圈驱动电路及方法
公开(公告)号：US5703748A
公开(公告)日：1997-12-30
申请号：US644492
申请日：1996-05-10
申请人： Gary Chris Fulks , William Dale Cornwell, Jr.
发明人： Gary Chris Fulks , William Dale Cornwell, Jr.
IPC分类号： H01H47/32 , H01H47/28
CPC分类号： H01H47/325
摘要： A solenoid driver circuit is provided that operates a solenoid in a quiet operation by reducing solenoid armature velocity. A pulse signal and a ramp signal are provided by a frequency generator and a ramp generator, respectively. A frequency switching circuit receives the pulse and ramp signals and responsively provides a time varying pulse signal that has a duty cycle that decreases with time. A dwell circuit allows the frequency switching circuit to control the solenoid for a first time period and then provides an on signal to the solenoid, maintaining the solenoid in the on position. The solenoid driver circuit is particularly suitable for use with solenoid controlled valves.
摘要翻译：提供一个螺线管驱动器电路，通过减小螺线管电枢速度在安静的操作中操作螺线管。脉冲信号和斜坡信号分别由频率发生器和斜坡发生器提供。频率切换电路接收脉冲和斜坡信号，并且响应地提供具有随时间减小的占空比的时变脉冲信号。驻留电路允许频率切换电路第一时间控制螺线管，然后向螺线管提供开启信号，将螺线管保持在接通位置。螺线管驱动电路特别适用于电磁阀。

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