Patent Number: 6,168,096

Title: Fuel injection device for internal combustion engines

Abstract: A fuel injection device for internal combustion engines which under the control of a control unit supplies fuel injection valves with fuel from a high-pressure fuel source. The fuel injection valve has an injection valve member, whose opening and closing position is determined by a pressure acting upon the injection valve member set in a control chamber. To perform an injection, the pressure in the control chamber must be relieved, which is accomplished with a control valve that opens two different outflow cross sections of an outflow conduit of the control chamber in succession. It is thus possible to accomplish an adapted opening of a fuel injection valve member for a preinjection and a main injection.

Inventors: Potschin; Roger (Brackenheim, DE), Boecking; Friedrich (Stuttgart, DE)

Assignee: Robert Bosch GmbH

International Classification: F02M 59/00 (20060101); F02M 59/46 (20060101); F02M 45/08 (20060101); F02M 45/00 (20060101); F02M 47/02 (20060101); F23D 014/68 ()

Expiration Date: 01/02/2018