Robert Boschgmbh

Andreas Koeninger

Thomas Kuegler

Gerhard Suenderhauf

Maike Sander-Potz, Legal Representative

Predrag Nunic

Wendelin Potz, Legal Representative

Peter Boehland

Matthias Horn

Marco Beier

Werner Teschner

Wilhelm Christ

Andreas Gruenberger

Fabian Fischer

Markus Ohnmacht

Oezguer Tuerker

Lars Olems

Thilo Kreher

Sebastian Laechele

Daniel Bosse

Andreas Kremer

Fabian Wolf

Markus Krasemann

Horst Opielka

Guenther Kubalik

Kerstin Kling

Knut Kristian Baadshaug

Herbert Hoelzl

A gas metering valve for an internal combustion engine. The gas metering valve includes a housing in which a gas chamber is formed, which includes an inlet opening and an outlet opening. A movable valve element is situated in the gas chamber, which is movable by an electrical actuator against the force of a return spring and which cooperates with a valve seat for opening and closing the inlet opening. A blocking valve is situated between the valve element and the outlet opening, which opens in the flow direction to the outlet opening and blocks in the opposite flow direction.

Gas metering valve for internal combustion engines

A nozzle assembly for a fuel injector includes a nozzle needle (), which is accommodated in a high-pressure bore () of a nozzle body () in such a way that the nozzle needle can be moved in a reciprocating manner in order to open and close at least one injection opening () and to which a spring force of a spring () is applied at least indirectly in a closing direction. The nozzle needle () is at least partially surrounded by a throttle bore body () in order to form at least one closing throttle (). The throttle bore body () has a multi-part design and comprises at least two sleeves (), which are at least partially guided in each other.

Nozzle assembly for a fuel injector, and fuel injector

The invention relates to a fuel injector for internal combustion engines for injecting fuel at high pressure, comprising a pressure chamber formed in an injector body, in which pressure chamber a nozzle needle is arranged in a longitudinally movable manner, which nozzle needle has a cone region tapered in a combustion chamber direction and a pin region having a constant diameter dat a combustion-chamber end of the nozzle needle. The injector body has a substantially conical nozzle needle seat, from which a first injection opening extends, and a blind hole, which adjoins the nozzle needle seat on the combustion chamber side. The blind hole has a cylindrical segment, which has the diameter d, and a hole base, from which a second injection opening extends. The cone region of the nozzle needle interacts with the nozzle needle seat and thereby opens and closes the first injection opening and the second injection opening with respect to the pressure chamber. During a partial stroke of the nozzle needle, the first injection opening and the second injection opening are connected to each other by means of a throttle gap, which is formed in the blind hole between the pin region and the wall of the blind hole, and the throttle gap remains constant at least over the partial stroke of the nozzle needle.

Fuel injector

A fuel injection valve for internal combustion engines, having a housing in which an outer valve needle and an inner valve needle guided in it are disposed in a bore. The outer valve needle controls an outer row of injection openings, and the inner valve needle controls an inner row of injection openings, to which rows of injection openings fuel is delivered at an injection pressure through a high-pressure conduit embodied in the housing. A control pressure chamber in the housing can be made to communicate with the high-pressure conduit, and by means of its pressure, a closing force is exerted at least indirectly on the inner valve needle. The high-pressure conduit communicates with a control chamber, by whose pressure a closing force is exerted at least indirectly on the outer valve needle, and the control chamber communicates with the control pressure chamber. A control valve is disposed in a housing, and by means of the control valve, the control chamber can be made to communicate with a leak fuel chamber.

Fuel injection valve for internal combustion engines

A fuel injection valve for internal combustion engines, having a housing with a bore inside it that contains a longitudinally sliding outer valve needle which in turn contains a longitudinally sliding inner valve needle and the end of each valve needle oriented toward the combustion chamber controls at least one injection opening. The pressure in a control pressure chamber at least indirectly exerts a closing force on the outer valve needle and the pressure in a control pressure chamber at least indirectly exerts a closing force on the inner valve needle. The housing contains a control valve that has a valve chamber and a valve element contained in it, wherein the valve chamber has a connection to the leakage oil chamber a continuously open connection to the control chamber and a connection to the control pressure chamber. The valve element can move between a end position, the valve element closing the connection to the leakage oil chamber and opening the connection to the control pressure chamber and a second end position, closing the connection to the control pressure chamber and opening the connection to the leakage oil chamber.

Growing community of inventors

Neulingen-Goebrichen, Germany

Andreas Koeninger