Siemens Aktiengesellschaft

Continental Automotive Gmbh

Wolfgang Gerber

Uwe Leuteritz

Martin Neumaier

Thomas Hofmann

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

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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Wenzenbach, Germany

Wolfgang Gerber