Robert Boschgmbh

Armin Merz

Friedrich Boecking

Alexander Hero

Josef Guentert

Andreas Dutt

Achim Koehler

Walter Fuchs

Jan Grebe

Eberhard Maier

Sandro Soccol

Christian Langenbach

Dirk Vahle

Gerhard Meier

Robert Reitsam

Peter Altermann

Marcus Kristen

Manfred Fink

Joerg Morlok

Francois Brusset

Frank Maurer

Markus Grieb

Thomas Ginsel

Disclosed is a delivery unit () for an anode circuit () of a fuel cell system () for delivering a gaseous medium, in particular hydrogen, from an anode region () of a fuel cell (), said delivery unit () comprising at least one jet pump () and being at least indirectly fluidically connected to the outlet of the anode region () by means of at least one connection line () and being fluidically connected to the inlet of the anode region () by means of an additional connection line (). According to the invention, in addition to the jet pump (), the delivery unit () comprises a recirculation fan () and a metering valve () as other components, and the flow contours of the components () for the gaseous medium and/or the components () are at least almost entirely arranged in a common housing ().

Delivery unit for an anode circuit of a fuel cell system for delivering a gaseous medium, and fuel cell system

Disclosed is a delivery unit () for an anode circuit () of a fuel cell system () for delivering a gaseous medium, in particular hydrogen, from an anode region () of a fuel cell (), said delivery unit () comprising at least one recirculation fan () and being at least indirectly fluidically connected to the outlet of the anode region () by means of at least one connection line () and being fluidically connected to the inlet of the anode region () by means of an additional connection line (). According to the invention, in addition to the recirculation fan (), the delivery unit () comprises a jet pump (), a metering valve () and a separator () as other components, and the flow contours of the components () for the gaseous medium are at least almost entirely arranged in a common housing ().

Delivery unit for an anode circuit of a fuel cell system for delivering a gaseous medium

The invention relates to a side channel compressor () for a fuel cell system for conveying and/or compressing a gas, particularly hydrogen, comprising a housing () and a drive (), wherein the housing () has a housing upper part () and a housing lower part (), a compressor chamber () which is circulating in the housing () about an axis of rotation () and has at least one peripheral side channel (), a compressor wheel () located in the housing (), which is rotatably arranged about an axis of rotation () and is driven by the drive (), said compressor wheel () comprising blades () arranged on the periphery thereof in the region of the compressor chamber (), and comprising respectively a gas inlet opening () embodied on the housing () and a gas outlet opening () which are fluidically interconnected via the compressor chamber (), in particular the at least one side channel (). According to the invention, the drive () is designed as an axial field electric motor () which has a stator () and a rotor (), wherein the stator () and the rotor () have a disc-shaped design and are formed so as to move about the axis of rotation (), and wherein the stator () is arranged next to the rotor in the direction of the axis of rotation ().

Side channel compressor for a fuel cell system for conveying and/or compressing a gaseous medium

Side-channel compressor () for a fuel cell system () for conveying and/or compressing a gas, in particular hydrogen, having a housing (), wherein the housing () has a housing upper part () and a housing lower part (), having a compressor chamber () which is situated in the housing () and which has at least one encircling side channel (), having a compressor wheel () which is situated in the housing () and which is disposed so as to be rotatable about a rotation axis (), wherein the compressor wheel () on the circumference thereof has blades () which are disposed in the region of the compressor chamber (), and having a gas inlet opening () and a gas outlet opening () which are in each case configured on the housing () and which by way of the compressor chamber (), in particular the at least one side channel (), are fluidically connected to one another. According to the invention, the compressor wheel () herein has at least one connection bore () which in a radial manner to the rotation axis () runs through at least one of the blades () and which connects an internal chamber () of the side-channel compressor () to a separation chamber ().

Side-channel compressor for a fuel cell system for conveying and/or compressing a gaseous media

An axial piston machine for at least one of a pump and a motor operation includes a housing, connection plate, piston drum, and working piston. The connection plate is connected to the housing. The piston drum is arranged on a rotatable drive shaft in the housing interior and defines at least one cylinder bore. The working piston is arranged in a longitudinally displaceable manner in the cylinder bore. The cylinder bore delimits a cylinder space having a changeable volume. The cylinder space is configured to connect to at least one pre-compression space via at least one hydraulic connection. The at least one pre-compression space is defined by a cavity within the connection plate. The cavity is defined by the connection plate and a closing element. The closing element is arranged between the connection plate and the housing interior.

Axial Piston Machine

A fuel pump according to the invention includes a housing and a part, which is a moving part during operation and which bears on a housing region at least indirectly. It is proposed that the fuel pump includes a coating which is applied to the housing region on a side of the housing region which faces towards the moving part, and that the coating is composed of a plastic.

Fuel pump, in particular for a fuel system of a piston engine

A high-pressure pump having a housing containing at least one pump element that has a pump piston driven by a drive shaft; the piston is guided so that it can slide in a cylinder bore of a housing part and delimits a pumping chamber therein. A support element supports the pump piston against the drive shaft; and a prestressed return spring acts on both the pump piston and the support element in the direction toward the drive shaft. The support element is guided so that it can slide in a receptacle, which is contained in the housing part that also contains the cylinder bore, in the direction of the longitudinal axis of the pump piston, but cannot rotate around the longitudinal axis.

High-pressure pump, in particular for a fuel injection system of an internal combustion engine

A pump unit for the metered delivery of fuel to internal combustion engines. The pump unit comprises a housing which comprises a longitudinal bore. Located in the longitudinal bore is an overflow valve, via which fuel flows back through a channel into a fuel tank. The passage can be opened or closed by a spring-loaded closing element. Fastened to the valve shaft of the overflow valve is a ring fitting. In the longitudinal bore of the housing there is an additional thread section, via which air flows out through vent gaps into a cavity of the ring fitting.

Growing community of inventors

Weinstadt, Germany

Armin Merz