FUEL INJECTION DEVICE HAVING HIGH OPERATION STABILITY FOR INTERNAL COMBUSTION ENGINE

摘要

<P>PROBLEM TO BE SOLVED: To provide a fuel injection device for an internal combustion engine in which a servo valve exhibits high operation stability, a defect due to the rebounds of an opening/closing element is eliminated and the wear of a component is reduced. Ž<P>SOLUTION: The injection device (1) comprises a supply servo valve (5) for controlling a rod (10) for opening/closing a nebulizer. The servo valve (5) has a valve element (7) which includes a control chamber (26) provided with an outlet passage (42a) opened/closed by an axially mobile opening/closing element (47). The opening/closing element (47) is separated from an anchor (17) of an electromagnet (16), is axially slidable on a guide element (41) for closing the outlet passage (42a) and is held in the closing position by a spring (23) acting through an intermediate body (12a). The anchor (17) can be displaced in an axial direction with respect to the guide element (41) between a flange (24) of the intermediate body (12a) and a projection element (62) of the guide member (41) so as to eliminate the rebounds of the opening/closing element (47) when the servo valve (5) is closed. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž