摘要:
The invention relates to a nozzle needle (1) and an injector (2) comprising such a nozzle needle (1), as well as to a production method for producing said nozzle needle (1). This nozzle needle (1) for an injector (2) for injecting fuel comprises at least one guiding section (11, 13) with a recess (21) and a guiding surface (14, 15, 16) designed to rest against an inner surface (30) of a nozzle body (3) of the injector (2), said recess (21) at least partially delimiting the guiding surface (14, 15, 16) and being designed to allow a flow of fuel along the guiding section (11, 13), and said guiding surface (14, 15, 16) being guided about the longitudinal axis (10) of the nozzle needle (1) in a helical manner.
摘要:
The invention relates to a fuel injection valve for arrangement in a combustion chamber (40) of an internal combustion engine, comprising a nozzle support with a nozzle body (30) disposed thereon in fixed fashion by way of a nozzle clamping nut (20), said nozzle body designed to protrude into the combustion chamber (40) and being provided for holding a nozzle needle, and at least one annular combustion chamber sealing element (50) comprising an upper support surface (60) facing the nozzle clamping nut (20) and a lower support surface (70) facing the combustion chamber (40), said lower surface surrounding the nozzle body (30) and being provided for sealing the nozzle support off from the combustion chamber (40). The invention is characterized in that at least one additional sealing element (80) is provided for sealing the nozzle body (30) in the area of the nozzle clamping nut (20).