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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。
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公开(公告)号：US6019203A
公开(公告)日：2000-02-01
申请号：US134588
申请日：1998-08-14
CPC分类号： F16K31/0655 , F16H61/0251 , F16H61/143 , F16K31/0665 , F16H2061/0253 , F16H2061/026
摘要： A transmission and control has a torque converter and clutch which is controlled between torque converter operation and torque converter clutch operation. The switch between these operations is controlled by a solenoid valve and a TCC apply valve. The solenoid valve is a normally open valve and includes a plunger that is spring loaded against a poppet valve to control the static pressure in the torque converter, during non-operating conditions of a vehicle, at or above a predetermined value.
摘要翻译： 变速器和变速器具有变矩器和离合器，其在变矩器操作和变矩器离合器操作之间被控制。 这些操作之间的切换由电磁阀和TCC施加阀控制。 电磁阀是常开阀，并且包括柱塞，该柱塞弹簧加载抵靠提升阀，以在车辆的非操作状态下控制变矩器中的静压，等于或高于预定值。
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公开(公告)号：US06390569B1
公开(公告)日：2002-05-21
申请号：US09518942
申请日：2000-03-06
IPC分类号： B60T836
CPC分类号： B60T15/028 , B60T8/363
摘要： A vehicle solenoid valve includes a coil case with a plunger housing disposed therein. The plunger housing establishes a first fluid communication path and a second fluid communication path. Reciprocably disposed within the plunger housing is a plunger. The plunger is movable between a de-energized configuration wherein fluid communication through the first fluid communication path is permitted and fluid communication through the second fluid communication path is blocked, an energized configuration, wherein fluid communication through the first fluid communication path is blocked and fluid communication through the second fluid communication path is permitted, and a pressure relief configuration, wherein, while the valve is energized, fluid pressure on the plunger surpasses a predetermined pressure level to overcome an opposing magnetic force on the plunger and permit fluid communication through the first fluid communication path.
摘要翻译： 一种车辆电磁阀包括其中布置有柱塞壳体的线圈壳体。 柱塞壳体建立第一流体连通路径和第二流体连通路径。 可往复地设置在柱塞壳体内的是柱塞。 柱塞可在停用配置之间移动，其中通过第一流体连通路径的流体连通被允许并且通过第二流体连通路径的流体连通被阻挡，通电结构，其中通过第一流体连通路径的流体连通被阻塞，并且流体 允许通过第二流体连通路径的连通，以及压力释放构造，其中，当阀被通电时，柱塞上的流体压力超过预定压力水平以克服柱塞上的相反的磁力并允许流体连通通过第一流体连通路径 流体通信路径。
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