Pneumatic control device for e.g. turbocharger, in motor vehicle, has pneumatic pump comprising air outlet connected to high pressure air tank that is connected to passage orifice of valve, and low pressure air tank connected to air inlet

摘要

The device (2) has a solenoid valve (6) comprising three passage orifices (12, 16, 18), where the orifice (12) is connected to a pneumatic actuator (8). The valve selectively connects the orifice (12) to the orifices (16, 18) for controlling the actuator. A pneumatic pump (22) e.g. vacuum pump, has an air inlet (30) connected to a low pressure air tank (24) for controlling an air pressure in the tank, where the tank is connected to the orifice (16). The pump has an air outlet (34) connected to a high pressure air tank (26) that is connected to the orifice (18).