Vorrichtung zum kombinierten Ausblasen von Kraftstoff und Luft

摘要

Device for the combined ejection of fuel and air, in particular for direct fuel injection systems in internal combustion engines, having a housing (1) which has one fuel port (26) and one air port (32) as well as an ejection opening which is connected to both ports (26; 32) and can be closed by means of electromagnetically actuable valves (20; 4), the fuel valve (20) being arranged, viewed from the ejection side, downstream of the air valve (4) and both being arranged concentrically with respect to one another and being capable of resting with their valve seat faces (34; 16) on the housing (1) in a sealing fashion. In addition, the air valve (4) opens towards the ejection side, the fuel valve (20) also opening towards the ejection side, the air valve (4) and the fuel valve (20) being capable of being actuated by a common electromagnet (6) and, in addition, the fuel valve (20) being supported on the air valve (4) by means of a spring device (18,19) and being arranged in such a way that it does not open until after an initial opening stroke of the air valve (4) and closes before the air valve (4) closes.