Patent ID: 6561165
Filing Date: 2003-05-13
Classification: F02F,F02M

Abstract:
In a common rail injector for injecting fuel in a common rail injection system of an internal combustion engine, the injector having an injector housing (9) which communicates with a central high-pressure reservoir (5) and in which a nozzle needle (17) is supported for movement axially counter to the initial stress of a nozzle spring (18) which is contained in a nozzle spring chamber (19), in order to adjust the injection onset and the injection quantity as a function of the position of a 3/2-way valve (3), the improvement comprising an injector pressure reservoir (10) integrated into the injector housing (9) said injector pressure reservoir communicating with the central high-pressure reservoir (5) independent of the position of the 3/2-way valve (3), wherein the volume of the injector pressure reservoir (10) is 10 to 20 times the maximal injection quantity.