公开(公告)号：US4947893A

公开(公告)日：1990-08-14

申请号：US474251

申请日：1990-02-05

申请人： Ellsworth S. Miller ,  Michael Slavin ,  Ching C. Ling

发明人： Ellsworth S. Miller ,  Michael Slavin ,  Ching C. Ling

IPC分类号： F16H61/00 ,  F16H61/02 ,  F16K31/06 ,  G05D16/20

CPC分类号： F16K31/0613 ,  F16H61/0021 ,  F16H61/0251 ,  G05D16/2013 ,  Y10T137/86622

摘要： A variable force solenoid valve assembly is provided for use in an automatic transmission controller for controllably reducing a fluid inlet pressure to a desired outlet control pressure. The invention includes a variable force solenoid assembly secured to a valve body assembly. The valve body assembly includes a spool valve having three radially extending lands which translates within a valve body central bore in response to movement of an armature assembly provided in the solenoid assembly. Movement of the spool valve generates first and second flow restriction for controllably regulating the reduction of inlet pressure to control pressure. In addition, various improvements in spool valve design are described including a design which provides positive damping of the spool valve so as to attenuate "self-excited" oscillation thereof.

摘要翻译： 提供可变力电磁阀组件用于自动变速器控制器，用于可控地将流体入口压力降低到期望的出口控制压力。 本发明包括固定到阀体组件的可变力螺线管组件。 阀体组件包括滑阀，该滑阀具有三个径向延伸的平台，其响应于设置在螺线管组件中的衔铁组件的运动而在阀体中心孔内平移。 滑阀的运动产生第一和第二流量限制，用于可控地调节入口压力的降低以控制压力。 此外，描述了滑阀设计的各种改进，其包括提供滑阀的正阻尼以衰减其“自激”振荡的设计。