Robert Boschgmbh

Hans-Christoph Magel

Friedrich Boecking

Rudolf Heinz

Holger Rapp

Wolfgang Stoecklein

Peter Boehland

Volker Beuche

Bernd Mahr

Patrick Mattes

Martin Kropp

Wolfgang Otterbach

Nadja Eisenmenger

Andreas Wengert

Achim Brenk

Andreas Gruenberger

Wolfgang Braun

Dieter Seher

Michael Mennicken

Gregory Rewers

Armin Richter

Matthias Burger

Stephan Wursthorn

Andreas Kellner

Thomas Kuegler

Manfred Mack

Godehard Nentwig

Thomas Pauer

Gerhard Geyer

Juergen Hanneke

Stefan Haug

Michael Bauer

Jochen Wessner

Sebastian Kanne

Stephan Wehr

Michael Kurz

Andreas Ohm

Juergen Frasch

Dirk Vahle

Christoph Butscher

Helmut Clauss

Andreas Rau

Stefan Schuerg

Joachim Boltz

Martin Katz

Falko Bredow

Christian Kuhnert

Andreas Bartsch

Christian Grimminger

Volkmar Kern

Heinz-Bernd Haiser

Dominikus Hofmann

Hrvoje Lalic

Frank Ulrich Rueckert

Lorenz Zerle

Stephan Amelang

Christian Faltin

Goran Kanis

Henning Kreschel

Lars Ulrich

Susanne Spindler

Lars Reichelt

A conveying unit () for a fuel cell system () for conveying and/or recirculating a gaseous medium, in particular hydrogen, comprising a jet pump () driven by a driving jet of a pressurized gaseous medium, and comprising a metering valve () with a nozzle (), wherein: the conveying unit () is designed as a combined valve jet pump assembly (); the gaseous medium is fed to the jet pump () by means of the metering valve (); the jet pump () has a main body (); and the jet pump () is connected to an anode inlet () of a fuel cell (). According to the invention, a deflection and/or change of direction of the gaseous medium which flows in a flow direction VII from the jet pump () to the anode input () of the fuel cell () occurs exclusively in the deflection region (), said the jet pump () having a separate closure cover () connected to the main body (), and the deflection region () and/or the deflection- or guiding geometry of the deflection region for the gaseous medium () is formed exclusively in the component of the closing cover ().

Conveying unit for a fuel cell system for conveying and/or controlling a gaseous medium

The invention relates to a jet pump unit () for controlling a gaseous medium, in particular hydrogen, comprising a nozzle () and a mixing tube unit (), said mixing tube unit () having a longitudinal axis () and the nozzle () a longitudinal axis (). The longitudinal axis () of the mixing tube unit () and the longitudinal axis () of the nozzle () include an angle (α) with each other.

Jet pump unit having an axis of a nozzle and an axis of a mixing tube offset by an angle

The invention relates to a metering valve () for controlling a gaseous medium, in particular hydrogen, comprising a valve housing (), wherein an interior space () is formed in the valve housing (). A reciprocating closing element () is arranged in the interior space (), which interacts with a valve seat () for opening or closing at least one passage channel (). Furthermore, the metering valve () comprises a nozzle (), the at least one passage channel () being formed in the nozzle () and the passage channel () having a circular-cylindrical portion.

Metering valve and jet pump unit for controlling a gaseous medium

A jet pump unit () includes a pump housing (), a metering valve () with a valve housing (), a mixer tube area (), an intake channel () and a runoff area (). A through-hole () that forms a through-opening () is designed in said pump housing (). The metering valve () is received in the through-opening () and a first step () and a second step () are formed in said through-opening (), radially with respect to a longitudinal axis () of the jet pump unit (), for the purpose of radially centering and guiding the metering valve () in said pump housing ().

Jet pump unit comprising a metering valve, for controlling a gaseous medium

A conveying device for a fuel cell system for conveying and/or recirculating a gaseous medium, in particular hydrogen, includes a recirculation fan, a jet pump that is driven by a motive stream of a gaseous medium that is under pressure, and a metering valve. The gaseous medium is supplied to the jet pump by the metering valve. The conveying device further includes an inlet fluidically connected to an anode outlet of the fuel cell and an outlet fluidically connected to an anode inlet of the fuel cell. The jet pump and the metering valve form a combined valve/jet-pump assembly. The components of the conveying device are positioned on a planar carrier element such that flow lines between and/or within the components extend only parallel to the planar carrier element. The planar carrier element is arranged between the fuel cell and the conveying device.

Conveying device for a fuel cell assembly for conveying and/or recirculating a gaseous medium

The invention relates to a proportional valve () for controlling a gaseous medium, in particular hydrogen, comprising a movable closure element () and a first spring () arranged on the closure element (), the first spring () being configured in order to exert a first spring force on the closure element () in a closing direction, and an actuator (), the actuator () being configured in order to provide an adjustable force in the opposite direction to the first spring force, the closure element () being configured in order to close and to open a through opening () by the movement, the proportional valve () comprising a closure element () which is arranged at an end of the closure element () remote from the first spring (), and a second spring (), the second spring () being arranged on the closure element () and the second spring () being configured in order to exert a second spring force on the closure element (), the second spring force counteracting the first spring force.

Proportional valve for controlling a gaseous medium and fuel cell arrangement

The invention relates to a proportional valve () for controlling a gaseous medium, in particular hydrogen, comprising a valve housing (), in which a closing element () arranged therein interacts with a valve seat () in order to open and close at least one passage opening (). Furthermore, an armature device (), which is operatively connected to the closing element (), and an electromagnet () are provided, by means of which electromagnet a magnetic force can be produced on the armature device () and the armature device () can move reciprocatingly along a longitudinal axis () of the proportional valve (). Moreover, the electromagnet () comprises an inner pole (), an outer pole () and a solenoid coil () and the armature device () composes an armature (). The valve housing () and the inner pole () are magnetically connected to each other by means of a magnetic choke point (). The magnetic choke point () is formed in an axial region of extent of the armature (). Furthermore, the inner pole () has a cavity () having a cavity edge (). The armature () plunges in said cavity () during the reciprocating motion of said armature. In a closed position of the proportional valve (), an end face () of the armature () lies at the same height as the cavity edge () of the cavity () with respect to the longitudinal axis (), the cavity edge () forming the end of the magnetic choke point ().

Proportional valve for controlling a gaseous medium

A method for operating a line circuit () for waste heat utilization of an internal combustion engine (), and a control unit (). A feed pump (), at least one heat exchanger (), an expansion machine (), a condenser () and a control unit () are situated in the line circuit (). The control unit () calculates a time period which is required until individual components or all the components of the line circuit () have reached a predefined temperature, in order to start up the line circuit () at least partially.

Method and control unit for operating a line circuit for waste heat utilization of an internal combustion engine

The invention relates to a device and a method for separating dirt particles from the working medium of a turbine (). The turbine () comprises at least one rotor () which is arranged in a housing (). A swirl generator () is provided that sets the working medium and the dirt particles in a spiral-shaped rotational movement along a principal axis () by means of the geometry of the swirl generator () and thereby separates the dirt particles from the working medium. The swirl generator () is designed in such a way that the working medium experiences a reversal of the speed component parallel to the principal axis () within the swirl generator ().

Device and method for separating dirt particles from the working medium of a turbine

The invention relates to a fuel injection valve comprising a housing () in which pressure is applied to a nozzle needle (), in a control chamber (), at least indirectly with a closing force in the direction of a valve seat (). The pressure in the control chamber () can be adjusted using a control valve () as said control chamber () is able to be connected to a low pressure chamber () via an outlet restrictor () and be filled with fuel at high pressure via an inlet restrictor (). A longitudinally-displaceable control piston () is arranged in the control chamber () and divides said chamber () into a first control sub-chamber and a second control sub-chamber (), the first control sub-chamber () being able to be connected to the low pressure chamber () by means of said outlet restrictor (). A sealing surface () is formed on the control piston () and interacts with a sealing seat () in the control chamber () such that the inlet restrictor () is hydraulically disconnected from the second control sub-chamber () when the sealing surface () comes to rest against the sealing seat (). Said first control sub-chamber () and second control sub-chamber () are constantly hydraulically interconnected by means of a restrictor connection ().

Fuel injection valve for internal combustion engines

The invention relates to a fuel injector having a nozzle body (I) and having an injector body (). In the nozzle body (I) there is formed a high-pressure bore () for accommodating a nozzle needle () which can perform a stroke movement and via the stroke movement of which at least one injection opening () can be opened up or closed off, the fuel injector further including a low pressure chamber () coupled to the needle () via a coupling device () having a first and a second disk-shaped coupler body (), the low pressure chamber () accommodating a piezoelectric actuator ().

Fuel injector and method for the manufacture and/or assembly of a nozzle needle assembly

The invention relates to a method for operating a steam cycle process for using the heat of an internal combustion engine (), comprising a conduction circuit () in which a working medium circulates. Said conduction circuit () comprises at least one pump (), at least one heat exchanger (), an expansion machine (), a feedwater tank () for storing the liquid working medium, and a condenser (). Components of the conduction circuit () are frost-proofed by partially evacuating the liquid working medium. After the end of the circulation of the working medium, at least one of the pumps () continues to operate in order to evacuate the working medium at least from the pump () which continues to operate.

Method for operating a steam cycle process

The invention relates to a fuel injector () having a high pressure region () which contains fuel that is under high pressure during operation, and a low pressure region () in which a lower pressure is present during operation than in the high pressure region (). A sensor () is located in the low pressure region () and a transmission means () is arranged such that a force which is equal to the pressure of the fuel in the high pressure region () is exerted on the sensor () at least some of the time.

Fuel injector having pressure sensor

An electromagnetic clutch (4) which serves for connecting a steam engine (2) to a combustion engine (3), wherein a first shaft (8) which can be driven by the steam engine (2) and a second shaft (9) which can be driven by the internal combustion engine (3) are provided, wherein an intermediate gear (23) which is connected to the first shaft (8) and a clutch bell (26) which is at least indirectly connected to the second shaft (9) are provided, wherein a freewheel (27) is provided between the intermediate gear (23) and the clutch bell (26).

Electromagnetic clutch for connecting a steam engine to a combustion engine

The invention relates to a device and a method for the recovery of waste heat from an internal combustion engine (), according to which a feed pump (), a heat exchanger (), an expansion engine () and a capacitor () are arranged in a circuit () containing a circulating working medium. A bypass connection () is mounted in parallel to the expansion engine (), in the circuit (), the expansion engine () being coupled to the circuit (), or decoupled therefrom, according to an operating situation of the internal combustion engine ().

Device and method for the recovery of waste heat from an internal combustion engine

Growing community of inventors

Pfullingen, Germany

Hans-Christoph Magel