Patent ID: 6422209
Filing Date: 2002-07-23
Classification: F02M

Abstract:
In a magnet injector for fuel reservoir injection systems, having:a fuel inlet (12) and a fuel outlet (14); a control chamber (24), which communicates with the inlet (12); a nozzle (16), which communicates with the inlet (12); and a nozzle needle (26), which has a tip (30) for closing the nozzle opening (18) and has a shaft end (32) that borders on the control chamber (24); and a magnet valve (36), which has a first electromagnet (46), an armature (50), a valve chamber (38) that communicates with the outlet (14) via a first passage and with the control chamber (24) via a second passage (42), and a throttle body (40) which is located in the valve chamber (38) and is connected to the armature (50), wherein the throttle body (40), in the state of repose of the injector, is kept in a first terminal position, in which it blocks one of the two passages, and is moved toward a second terminal position, in which it opens this passage, by triggering of the first magnet (46), the improvement wherein the magnet valve (36) has a second electromagnet (48), which upon triggering acts on the armature (50) oppositely from the first electromagnet (46); and the throttle body (40) is embodied such that in its second terminal position, it blocks the other (42) of the two passages and along the way between its two terminal positions opens both passages.