Siemens Aktiengesellschaft

Liebherr-Components Deggendorf Gmbh

Continental Automotive Gmbh

Siemens Aktiengesell Schaft

Siemens Aktiengesellschaft Ag

Volkswagen Mechatronic Gmbh & Co. Kg

Richard Pirkl

Christian Hoffmann

Hellmut Freudenberg

Hartmut Gerken

Martin Hecker

Hans-Jörg Wiehoff

Harald Schmidt

Norbert Schoefbaenker

Jörg Beilharz

Razvan-Sorin Stinghe

Lorand D'Ouvenou

Alexander Preis

Walter Schrod

Dirk Baranowski

Markus Hoellbacher

Wolfgang Lingl

Michael Schmid

Manfred Weigl

Maximilian H Kronberger

Achim Przymusinski

Klaus Wenzlawski

Georg Brasseur

Ralf Förster

Jürgen Dick

Heinz Lixl

Mark Elliott

Uwe Lingener

Thomas Atzkern

Verena Koegel

Klaus Lichtinger

Reiner Lederle

Josef Aspelmayr

G&uuml;nther Riedel

Klaus Weraneck

Martin Seidl

Giovanni Corbinelli

Mario D′Onofrio

Christian Riβler

Andreas Pfeifer

Nicholas Nozeran

Wolfgang Bock

Maximillian Kronberger

Sven Rebeschieβ

Udo Reiländer

Christian Rissler

Christian Ribler

Bernhard Kopp

Markus Höellbacher

Wolfgang Melder

Norbert Schöfbänker

Martin Schmidt

Lydia Kapusta

Markus HÖLLBACHER

Verena KÖGEL

Maximilian Kronberger

The present invention relates to a device for direct injection of a gaseous fuel, in particular hydrogen, which device comprises: a pressure-control unit which is designed to convert a supplied variable pressure level of the gaseous fuel into a fixed constant output pressure level; a distributor unit which is connected to at least one injector for direct injection of the gaseous fuel, which has been guided through the pressure-control unit, into a combustion chamber; and a fluid connection between the pressure-control unit and the distributor unit in order to guide the gaseous fuel at a constant output pressure downstream towards the distributor unit. The device is characterized in that a flow-control valve is disposed along the fluid connection and designed to adjust the constant output pressure level of the gaseous fuel to a desired target pressure not exceeding the output pressure level.

Device for direct injection of a gaseous fuel

The present invention relates to a valve of a fuel injector for selectively disconnecting a high pressure region from a low pressure region of a fuel, comprising an opening in a seat plate, an armature which is designed to close the opening of the seat plate, a spring element which prestresses the armature in the direction of a position which closes the opening, and an electromagnet for lifting the armature out of the position which closes the opening into a position which releases the opening, characterized by an elastically compressible damping element for limiting an armature stroke in the case of the armature being lifted from the seat plate into the releasing position.

Valve of a fuel injector

The present invention relates to a nozzle for injecting fuel comprising an orifice in the region of a nozzle tip for leading fuel out of the nozzle and a reception hole for receiving a nozzle needle, wherein the reception hole has a seat region for a sealing closing by a nozzle needle to enable a fuel supply to the orifice in dependence on a position of the nozzle needle, characterized in that the longitudinal axis of the orifice is directed toward a region of the reception hole that adjoins the side of the seat region remote from the nozzle tip.

Nozzle for injecting fuel

A device comprises: an injector for injecting fuel into an engine combustion chamber, a switch formed by an injector housing and an injector nozzle needle and which changes its switching state depending on a closed or open state of the injector, an input line for supplying energy to an actuating element which adjusts the nozzle needle in its two states, an output line for conducting energy away from the actuating element, and an evaluation unit for detecting the switching state of the switch, wherein a first switch contact of the switch is connected to an electrical input line of the injector, a second switch contact of the switch is connected to ground, and the evaluation unit is configured to carry out a signal measurement on the input line and/or an output line to conclude a switch state.

Device for detecting the state of a fuel injector

The present invention relates to an injector for injecting fuel, comprising an injector housing, a movable nozzle needle which is arranged in the injector housing and has a nozzle needle tip, a nozzle needle seat for receiving the nozzle needle tip, and a mechanical switch which upon contact of the nozzle needle tip with the nozzle needle seat assumes a closed state and upon interruption of the contact assumes an open state, wherein the injector is provided with an input line and an output line for actuating a movement of the nozzle needle, and the switch includes a first terminal and a second terminal. The injector is characterized in that the first terminal of the switch is connected to the input line and the second terminal of the switch is connected to the injector housing.

Injector, and device for detecting the condition of such an injector

The invention relates to a connecting piece for a fuel injector of an internal combustion engine comprising at least one high-pressure input port and at least one high-pressure output port, wherein the high-pressure input port and the high-pressure output port open into an internal high-pressure accumulator of the connecting piece and/or the injector via separate high-pressure feed channels.

Connecting piece for a fuel injector of an internal combustion engine

A fuel injector having a seat plate with a passage throttle; a valve insert arranged at a first side of the seat plate; a valve guide surrounding the valve insert and adapted for slidable reception of the valve insert; a spring sheath surrounding at least a section of a jet needle arranged at a second side of the valve insert, the second side opposite the first side and the seat plate; a valve chamber fluidly connected to the passage throttle; a control chamber adapted for reception of fuel; and a line arranged in the valve insert connecting the control chamber and the valve chamber to one another, wherein the line is closeable by placement of the valve insert onto the spring sheath.

Injector for injecting fuel

An injector for injecting fuel including an injector housing, a movable nozzle needle with a nozzle needle tip arranged in the injector housing, and a nozzle needle seat for receiving the nozzle needle tip. A contact pairing of the nozzle needle and the nozzle needle seat here represents a mechanical switch that adopts a closed state upon contact of the nozzle needle tip with the nozzle needle seat and an open state upon interruption of the contact. Provision is additionally made that the injector has an input line and an output line for controlling movement of the nozzle needle, the switch has a first connector connected to the input line and a second connector connected to the injector housing, and a resistor connected between the first connector of the switch and the input line.

Injector

The present invention relates to an injector for injecting fuel, comprising an injector housing for receiving at least one injector component, and an electromagnet for activating a valve for opening and closing the injector, wherein the electromagnet comprises a coil winding and a magnetic body, wherein the injector housing is formed in one piece with the magnetic body.

The invention relates to a fuel injection valve for the intermittent injection of fuel into the combustion chamber of an internal combustion engine having a housing which has a high pressure chamber and a low pressure chamber. In addition, the fuel injection valve has a control chamber which is divided by means of a control valve into a first and a second control chamber. The control valve in turn has a valve guide and a valve insert, wherein an outflow throttle which connects the first control chamber to the second control chamber is arranged in the valve guide. According to the invention, the connection which is formed by way of the outflow throttle between the first control chamber and the second control chamber can be interrupted temporarily in a targeted manner.

Fuel injection valve

The invention relates to a device for sensing the state of an injector, comprising an injector for injecting fuel into an engine combustion chamber, a switch, which is designed to change the switching state thereof in accordance with the state of the injector, and an evaluating unit for sensing the switching state of the switch, wherein a first switch contact of the switch is connected to an electrical input line of the injector, a second switch contact of the switch is connected to ground, and the evaluating unit is designed to carry out a first current measurement for a current flowing into the injector and into the switch and a second current measurement for the current flowing into the injector.

Device for sensing the state of an injector

In an actuator unit for an injection system of an internal combustion engine, the difference in the longitudinal extension when a change of temperature of the piezoelectric actuator element occurs affecting the actuator unit is equalized compared to the actuator housing due to different thermal expansion coefficient values in that a fastening element is arranged on the actuator housing. The fastening element is made of a different material than the actuator housing and thus affects a force acting counter to the change of length of the actuator housing.

Actuator unit for an injection system of an internal combustion engine

In a method or a device for forming an electric control signal for an injection impulse of a position-controlled fuel injector, particularly of a common-rail or pump-nozzle injection system, the course of the electric control signal can be selected freely in regard to the pulse edges (injection rate changes Q), the holding period (&#x394;t) and the injection rate (Q). This offers the advantage that the combustion process can be better optimized with respect to low emissions, low consumption and for meeting tightened legal regulations.

Method and device for forming an electric control signal for an injection impulse

An injection system for injecting fuel has:

Injection system and a method for producing an injection system

A method for injecting a fluid, in particular a fuel, performs the following steps: A nozzle () which can be actuated by a piezo element () is provided. A current pulse () is supplied to the piezo element (). The capacity () of the piezo element () is recorded at the time when the current pulse () is supplied. An actual characteristic curve of the injection is recorded based on the capacity (). The current pulse () is regulated in order to optimize the injection based on the actual characteristic curve of the injection.

Method and injection system for injecting a fluid

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Wuppertal, Germany

Richard Pirkl