Fluidically-operated suction valve for motor car, has fluidically operated actuation unit moved from valve seat to closing element, where operating force is generated on actuation unit at different fluid pressures

摘要

The valve (1) has a first fluid connecting port (24) connected with a second fluid connecting port (22) through a pressure chamber (20). A valve seat (14) is extended from the pressure chamber and closed by a closing element (16). A fluidically operated actuation unit (36) is moved from the valve seat to the closing element according to pressure conditions at the first connecting port. Operating force (F) is generated at different fluid pressures based on the actuation unit and according to predetermined angle of the closing element. The pressure chamber comprises a seal arrangement (38). The seal arrangement is designed as ring seal arrangement, labyrinth seal arrangement, rotary shaft seal arrangement, O-ring seal arrangement and bellows seal arrangement. The fluidically operated actuation unit is designed as an elongated pin. The closing element is designed as close ball and elongated plunger.