Continental Automotive Gmbh

Siemens Aktiengesellschaft

Uwe Leuteritz

Thomas Hofmann

Ferdinand Löbbering

Wolfgang Gerber

Martin Neumaier

Michael Härtel

Jörg Wonesch

A fuel injection valve for an internal combustion engine may include an injector body having a receiving hole for an injector needle. The receiving hole may be implemented as a blind hole and may form an injector ring chamber in the injector shaft and a cone-shaped valve seat at the base thereof, and a blind injector hole at the tip of the valve seat cone, from which at least one injector hole extends. The injector needle may include an at least partially cone-shaped needle tip and may seal off the blind injector hole, and thus the at least one injector hole, from the injector ring chamber. The needle tip may include a needle pilot adapted in contour and extent to the blind injector hole in the valve seat, the pilot protruding into the blind injector hole and thus reducing a compression volume formed between the valve seat and injector hole.

Fuel injection valve for an internal combustion engine

A fuel injection valve for arrangement in a combustion chamber () of an internal combustion engine has a nozzle support with a nozzle body () disposed thereon in fixed fashion by way of a nozzle clamping nut (), the nozzle body designed to protrude into the combustion chamber () and being provided for holding a nozzle needle, and at least one annular combustion chamber sealing element () with an upper support surface () facing the nozzle clamping nut () and a lower support surface () facing the combustion chamber (), the lower surface surrounding the nozzle body () and being provided for sealing the nozzle support off from the combustion chamber (). At least one additional sealing element () is provided for sealing the nozzle body () in the area of the nozzle clamping nut ().

Fuel injection valve for arrangement in a combustion chamber of an internal combustion engine

A nozzle module for an injection valve has a nozzle body with a recess with a wall, being operable to hydraulically couple the recess to a high pressure fluid circuit, a seal seat embodied on the wall, at least one nozzle needle arranged in an axially moveable fashion in the recess. The needle has a seat area with a sealing surface interacting with the seal seat to open and close the valve, respectively, and a supporting area, arranged radially outside and axially at a distance from the seat area and supporting the needle against the wall when the needle closes. The needle has at least one needle recess, which when the supporting area rests against the wall of the body recess, an area of the body recess facing axially away from the seat area is hydraulically coupled to an area of the body recess which axially faces the seat area.

Nozzle module for an injection valve

The invention relates to an injection valve in which the movable valve parts and the valve seat () form the electrodes of a capacitor that is connected in an electric circuit, the capacity of said capacitor changing with the valve lift of the closing element. According to the invention, the valve seat () is configured in the form of an electrically conductive nozzle body () that is connected to the electric circuit and the closing element is configured in the form of a valve needle () that is connected to the electric circuit by its end surface opposite the valve seat ().

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Wuppertal, Germany

Uwe Leuteritz