Brake system and method having secondary hydraulic braking in a de-energized operational mode

    公开(公告)号:US06533369B2

    公开(公告)日:2003-03-18

    申请号:US09821970

    申请日:2001-03-30

    IPC分类号: B60T860

    CPC分类号: B60T8/4081

    摘要: A brake system and method of controlling the system are disclosed. The system provides secondary hydraulic braking in a de-energized mode. The system includes a wheel brake associated with wheels of a vehicle typically at each corner of the vehicle. The wheel brake typically includes a caliper or drum for deceleration of the vehicle. The system includes a master cylinder in fluid communication with the wheel brake. In the de-energized mode, the master cylinder operates the wheel brake. A solenoid isolation valve decouples the master cylinder from the wheel brake when the system is in a normal, i.e., an energized, mode. As such, the master cylinder is isolated from the wheel brake and is prevented from operating the wheel brake. Alternatively, in the de-energized mode, the isolation valve couples the master cylinder with the wheel brake to provide the secondary hydraulic braking. The system includes an actuator assembly for operation of the wheel brake independent of the master cylinder when the system is in the energized operational mode. A second, normally-closed, solenoid valve opens in the energized mode to couple the actuator assembly with the wheel brake. The second solenoid valve closes in the de-energized mode to isolate the actuator assembly from the wheel brake such that the secondary hydraulic braking is provided through the master cylinder.

    Dry interface corner vehicle braking system
    3.
    发明授权
    Dry interface corner vehicle braking system 有权
    干式接口角车辆制动系统

    公开(公告)号:US06371574B1

    公开(公告)日:2002-04-16

    申请号:US09653397

    申请日:2000-09-01

    IPC分类号: B60T832

    CPC分类号: B60T8/326 B60T8/3275

    摘要: A braking assembly for providing a braking force to a wheel brake of a vehicle based upon receipt of an electrical brake signal is provided. The brake assembly comprises an actuator including a motor that applies and releases a piston within an actuator body. The actuator is fluidly connected to a wheel brake whereby the wheel brake can be applied and released. A solenoid valve is interposed between the actuator and the wheel brake on a primary fluid path for opening and closing the fluid connection. A step piston is placed within a secondary fluid path between the actuator and the wheel brake and operates to momentarily increase fluid displacement applied to the wheel brake when the solenoid valve closed.

    摘要翻译: 提供了一种用于基于接收到电制动信号向车辆的车轮制动器提供制动力的制动组件。 制动组件包括致动器,其包括在致动器主体内施加和释放活塞的马达。 致动器流体地连接到车轮制动器,由此可以施加和释放车轮制动器。 电磁阀介于致动器和车轮制动器之间的主流体路径上,用于打开和关闭流体连接。 步进活塞被放置在致动器和车轮制动器之间的次级流体路径中,并且操作以在电磁阀关闭时瞬间增加施加到车轮制动器的流体位移。

    Zero drag disc brake with anti-knock-back device
    4.
    发明授权
    Zero drag disc brake with anti-knock-back device 失效
    零拖盘式制动器带防倒装置

    公开(公告)号:US06481543B1

    公开(公告)日:2002-11-19

    申请号:US09633942

    申请日:2000-08-08

    IPC分类号: F16D5502

    摘要: A disc brake caliper assembly is provided that includes a housing having a bore. A piston is arranged within the bore and is movable between normal retracted and knock-back positions. A linkage is adjacent to the piston and is movable between first and second positions with a clearance between the piston and the linkage in the first position. The clearance undesirably permits the piston to move to the knock-back position during severe operating conditions. An actuator, which also may be used as part an electric parking brake, moves the linkage from the first position to the second position to eliminate the clearance when the linkage is moved from the first position to the second position where the linkage abuts the piston. The linkage is connected to the caliper housing by a support. The linkage prevents the piston from moving from the normal retracted position to the knock-back position. In operation, the present invention prevents piston knock-back by sending an adjustment signal from a controller to the actuator at a predetermined interval. The signal commands the actuator to move a linkage from the first to the second position where the linkage abuts the piston. In this manner, the linkage prevents the piston from moving from a normal retracted position to a knock-back position.

    摘要翻译: 提供了一种盘式制动钳组件,其包括具有孔的壳体。 孔内布置有活塞,并可在正常的缩回位置和倒退位置之间移动。 联动装置与活塞相邻,并且可在第一和第二位置之间移动,在第一位置中活塞与联动装置之间具有间隙。 在严格的操作条件期间,间隙不期望地允许活塞移动到撞击位置。 也可以用作电动驻车制动器的部件的致动器将联动装置从第一位置移动到第二位置,以便当联动装置从第一位置移动到联动装置邻接活塞的第二位置时消除间隙。 连杆通过支撑件连接到卡钳外壳。 联动装置防止活塞从正常缩回位置移动到敲击位置。 在操作中,本发明通过以预定的间隔将调节信号从控制器发送到致动器来防止活塞翻倒。 信号命令致动器将连杆从第一位置移动到第二位置,在该位置,联动装置邻接活塞。 以这种方式,联动装置防止活塞从正常缩回位置移动到敲击位置。

    Brake by wire system with separate controllers and both position and force input sensors

    公开(公告)号:US06390565B1

    公开(公告)日:2002-05-21

    申请号:US09791381

    申请日:2001-02-23

    IPC分类号: B60T1374

    摘要: A brake by wire system provides the capability of both travel and force sensors on a brake apply input member such as a brake pedal and also provides redundancy in sensors by providing the signal from a sensor responsive to travel or position of the brake pedal to a first controller and the signal from a sensor responsive to force applied to the brake pedal to a second controller. The first and second controllers are connected by a bi-directional communication link whereby each controller may communicate its received one of the sensor signals to the other controller. In at least one of the controllers, linearized versions of the signals are combined for the generation of first and second brake apply command signals for communication to brake apply units. If either controller does not receive one of the sensor signals from the other, it nevertheless generates its brake apply command signal on the basis of the sensor signal provided directly to it from the sensor. In a preferred embodiment of the system, a controller combines the linearized signals by choosing the largest in magnitude.

    Method for controlling a valve in a hydraulic braking system
    6.
    发明授权
    Method for controlling a valve in a hydraulic braking system 失效
    用于控制液压制动系统中的阀的方法

    公开(公告)号:US06361128B1

    公开(公告)日:2002-03-26

    申请号:US09345620

    申请日:1999-06-30

    IPC分类号: B60T1316

    摘要: Improved control for a hydraulic system useful in automotive braking applications, particularly in dry interface automotive braking applications, includes the use of a valve for holding pressure in a hydraulic system constant while relieving the pressure load on the pressure source. Preferably, the valve is a normally-open solenoid valve that is closed and opened in response to a desired pressure being sensed at a pressure actuated mechanism, such as a brake caliper. The use of the improved control for a hydraulic system improves brake response times during ABS applications, and increases the energy efficiency and life expectancy of the pressure providing motor.

    摘要翻译: 用于汽车制动应用中的液压系统的改进的控制,特别是在干式接口汽车制动应用中,包括使用阀来保持液压系统中的压力恒定,同时减轻压力源上的压力负荷。 优选地,阀是常开电磁阀,其响应于在压力致动机构(例如制动钳)处感测到的期望压力而关闭和打开。 使用改进的液压系统控制可提高ABS应用中的制动响应时间,并提高压力提供电机的能量效率和使用寿命。

    Pressurized brake bleed system
    7.
    发明授权
    Pressurized brake bleed system 失效
    加压制动器排气系统

    公开(公告)号:US5967199A

    公开(公告)日:1999-10-19

    申请号:US78156

    申请日:1998-05-13

    IPC分类号: B60T17/22 B65B1/08

    CPC分类号: B60T17/222

    摘要: A pressurized brake bleed system includes a rigid container, a flexible container containing brake fluid disposed within the rigid container, a hose having one end connected to the flexible container and another end for connection to a fluid reservoir of a brake system and a structure to apply a force to pressurize the flexible container to bleed the brake fluid from the flexible container through the hose to the fluid reservoir.

    摘要翻译: 加压制动器泄放系统包括刚性容器,容纳设置在刚性容器内的制动流体的柔性容器,具有连接到柔性容器的一端的软管和用于连接到制动系统的流体储存器的另一端以及应用的结构 用于对柔性容器加压以将制动流体从柔性容器通过软管排放到流体储存器的力。

    Electro-hydraulic brake apply system displacement augmentation
    10.
    发明授权
    Electro-hydraulic brake apply system displacement augmentation 失效
    电动液压制动器应用系统位移增大

    公开(公告)号:US6082831A

    公开(公告)日:2000-07-04

    申请号:US64337

    申请日:1998-04-22

    摘要: A brake apply system includes a modulator that has a first bore carrying a power driven dual-effect piston. The piston has a base piston surface and an augmentation piston surface. A wheel brake is hydraulically connected to the modulator through an open fluid communication route that is provided between the wheel brake and the base piston surface. A selectively open fluid communication route is provided between the wheel brake and the augmentation piston surface with a check valve mechanism positioned in the selectively open fluid communication route. An augmentation chamber is defined adjacent the augmentation surface of the dual-effect piston. The modulator includes a second bore carrying a valve mechanism that provides an open flow path between the augmentation chamber and a reservoir when pressure at the wheel brake is relatively high and that significantly restricts the flow path when the wheel brake pressure is relatively low. Through this mechanism the augmentation surface is added to the base piston surface for a dual-effect pressure generation area that increases the initial pressurization rate of the brake apply system. Advantageously, the faster the apply rate of the braking system, the greater the augmentation pressure and displacement that is available.

    摘要翻译: 制动施加系统包括具有承载动力驱动的双重作用活塞的第一孔的调节器。 活塞具有基座活塞表面和增强活塞表面。 车轮制动器通过设置在车轮制动器和基座活塞表面之间的开放的流体连通路径与调制器液压连接。 在车轮制动器和增压活塞表面之间设有选择性开放的流体连通路径,其中止回阀机构位于选择性打开的流体通道中。 在双效活塞的增强表面附近限定增强室。 该调节器包括一个带有阀机构的第二孔,该阀机构在车轮制动器的压力相对较高时,在增压室和储存器之间提供开放的流动路径,并且当车轮制动压力相对较低时,可显着限制流路。 通过该机构,增加表面被添加到基座活塞表面,用于增加制动施加系统的初始加压速率的双重效应压力产生区域。 有利地,制动系统的施加速率越快,增加压力和可用位移就越大。