Robert Boschgmbh

Martin Katz

Hans-Christoph Magel

Holger Rapp

Oscar Lucia Gil

Andreas Kellner

Dirk Vahle

Nadja Eisenmenger

Wolfgang Braun

Achim Brenk

Hector Sarnago Andia

Juergen Hanneke

Michael Mennicken

Jochen Wessner

Matthias Burger

Helmut Clauss

Felix Wiedmann

Joachim Boltz

Timo Etzel

Tobias Reinhard Ott

Asmir Rojo

Falko Bredow

Hrvoje Lalic

Alexander Wernau

Lorenz Zerle

Marco Faber

Benedikt Leibssle

The invention relates to a device for metering two different liquid or gaseous fuels, comprising a nozzle element () in which a first pressure chamber () that can be filled with a first fuel is formed, wherein an outer nozzle needle () is received in the pressure chamber in a longitudinally movable manner. The outer nozzle needle () is equipped with a second pressure chamber () which can be filled with a second fuel and in which an inner nozzle needle () is arranged in a longitudinally movable manner, said inner nozzle needle interacting with an inner nozzle seal () formed in the outer nozzle needle () in older to open and close at least one inner injection opening (). Furthermore, at least one outer injection opening () is provided which can be connected to the first pressure chamber (), the at least one outer injection opening () being formed in the outer nozzle needle ().

Device for metering fuel

A fuel injection device for an internal combustion engine includes a housing and a valve element which is arranged in the housing. The valve element interacts, in the region of a fuel outlet opening, with a valve seat. The valve element is embodied by at least one first part and at least one second part which are coupled to one another by means of a hydraulic coupler. The hydraulic coupler has a coupling chamber which is delimited at least partially by a sleeve which is guided on the first part of the valve element. Additionally a guide element guides an end region of the first part of the valve element, which end region being oriented toward the second part of the valve element.

Fuel injection device for an internal combustion engine

Disclosed is a fuel injection device comprising a housing and a valve element disposed therein and cooperating with a valve seat located in the area of at least one fuel discharge port. The valve element is composed of several parts while at least two parts of the valve element are coupled to each other via a hydraulic coupler.

Fuel injection device for an internal combustion engine using direct fuel injection

The invention relates to a fuel injector having a coupler. The reciprocating movement of an actuator is transmitted by the coupler to a pin-shaped injection valve member which is guided into the nozzle body. The coupler has a valve piston and a coupler sleeve, and the valve piston is displaced in the inner diameter area of the coupler sleeve. The inner diameter of the coupler sleeve is greater than the outer diameter of the injection valve member. The difference between the inner diameter of the coupler housing and the outer diameter of the injection valve member is 0.2 mm or less.

Fuel injector with coupler

Growing community of inventors

Stuttgart, Germany

Martin Katz