| 摘要 |
The invention relates to an electromagnetic pressure control valve (10, 10a) combining the functional properties of a pressure control valve with those of a shift valve. The pressure control valve (10, 10a) can be especially used to control automatic gearboxes in motor vehicles and is characterised by low production costs, low leakage and an extended operational range in relation to low working pressure with a constant characteristic curve. The valve part (11, 11a) of the pressure control valve comprises a first seat valve (45) with a closing element (34). Said closing element (34) co-operates with an actuating member (35,35a) which comprises a control edge (50) forming a second seat valve (49). |
