Electrically activatable, hydraulic pressure control valve

申请公布号：DE3806267(A1)

申请号：DE19883806267

申请日期：1988.02.27

申请公布日期：1988.09.15

申请人：

VOLKSWAGEN AG, 3180 WOLFSBURG, DE

发明人：HONIG, ERNST-AUGUST, DIPL.-ING., 3180 WOLFSBURG, (VERSTORBEN), DE

分类号：F16H61/02;(IPC1-7):B60K41/04;F15B13/044

主分类号：F16H61/02

摘要：The electrically activatable, hydraulic pressure control valve (1) serves for the controlled pressure medium actuation of a gearshift element (2) of a motor vehicle automatic transmission. For smooth performance of transmission shift sequences, the pressure control valve has a control piston (3) which, by alternately opening a pressure medium feed line (17) and an outlet line (23), controls an actuating pressure, to be fed to the gearshift element (2) by way of a pressurisation line (18), in proportion to a control pressure, acting against a return force and infinitely adjustable by a solenoid valve (4), activatable as a function of operating conditions. In order to achieve actuation of the gearshift element even in the event of a power failure, it is proposed that the control piston (3) and the forces acting thereon be dimensioned in such a way that the actuating pressure exhibits the pressure of the pressure medium feed line (17) when the current flow of the solenoid valve (4) is essentially switched off, the pressure of the outlet line (23) in a low current flow range of the solenoid valve and a pressure increasing proportional to the current load when the current flow of the solenoid valve exceeds a limit value. <IMAGE>

耳机

音箱

光碟匣

吊扇叶片(二)

烟灰缸

玻璃胶长花盆(二)

拷花薄织品

包装用容器之附有管嘴的盖子

门板吊架

插头

收纳盒

瓶子(联合一)

饮料曲线罐

广告置物盒框

夹式芳香剂盒

复合式瓶阀

玻璃胶长花盆

盆栽容器

插座(二)

插座(一)