Robert Boschgmbh

Ulrich Gottwick

Juergen Binder

Michael Schubert

Jan-Michael Graehn

Hermann Winner

Ian C Faye

Eberhardt Schunck

Rainer Saliger

Juergen Hachtel

Norbert Polzin

Gebhard Wuerth

Hans-Georg Horst

Robert Kornhaas

Jens Intorp

Gunter Wiedemann

G&uuml;nther Schmidt

Jurgen Binder

Harald Beck

J&uuml;rgen Binder

Rodrigo Biurrun Sotelo

Anton Van Zanten

Michael Kunz

Wolf-Dieter Jonner

Peter Dominke

Christian Zimmermann

Guenther Schmidt

Jost Brachert

Matthias Schanzenbach

Eberhard Schoch

Daniel Zirkel

Thanh-Hung Nguyen-Schaefer

Timo Jahnz

Rolf-Hermann Mergenthaler

Thorsten Allgeier

Ruediger Poggenburg

Martin Pfau

Gotthilf Koerner

Ortwin Engfer

Thomas Braun

Frank Baumann

Michael Hofsaess

Gunther Schmidt

Kai Kroeger

Andreas Kaessmann

Arthur Schaefert

Martin Moeller

Dirk Ortlinghaus

Dietmar Enke

David Schlipf

Paul Eberhard Schunck

Bernard Witsch

The invention relates to a method for assisting a driver of a motor vehicle, in particular of an electric vehicle, during a driving process for overcoming an obstacle which is close to the ground and has a slow speed. In this context, the method has the following steps: transmission (S) of a torque to the wheels which are to be driven in order to overcome the obstacle, detection (S) that the obstacle has been overcome, and automatic reduction in the torque and/or automatic generation (S) of a braking torque in order to decelerate the motor vehicle directly after the detection.

Method for assisting a driver of a motor vehicle

The present invention relates to a fuel cell assembly having a fuel cell and an actuating element, which is activated by a control unit, for bringing residual gas out of a fuel flow of the fuel cell. The invention is provided with the control unit having an open-loop and/or closed-loop control system which takes into consideration the fuel concentration in the fuel flow.

Fuel cell assembly

The invention relates to a safety device for a high-voltage system, having a coupling device which switchably couples high-voltage components of the high-voltage system to external components, and which is designed to electrically separate the high-voltage components from the external components depending on actuation of a safety switch, having a discharge circuit which is designed to electrically discharge the high-voltage components depending on actuation of the safety switch, and having a monitoring device which is designed to monitor electric parameters of the discharge circuit or of the high-voltage components, and to release the lock of a housing for the high-voltage components if at least one of the electric parameters of the discharge circuit or of the high-voltage components falls below a predetermined threshold value.

Safety device for a high-voltage system and method for safeguarding a high-voltage system

The invention relates to a fuel cell system with at least one fuel cell for electrochemical conversion of two reactants. The fuel cell has two electrode areas, having a first supply line for supplying a first reactant to a first electrode area, and an outlet line, for emission of residual gas from the first electrode area. The residual gas has an electrochemically unconsumed portion of the first reactant, a recirculation element, for feeding the residual gas from the outlet line into the first supply line, and an outlet valve in order to emit the residual gas into an area surrounding the fuel cell system. The invention provides for the fuel cell system to have a monitoring unit in order to control the outlet valve. In particular, the monitoring unit opens the outlet valve when the energy required to feed the residual gas by the recirculation element exceeds an energy potential of the first reactant which is present in the residual gas.

Fuel cell system with energy-efficient reactant recycling

A fuel cell system has a fuel cell with a cathode and an anode and constructed so that a hydrous fluid in a form of a cathode exhaust gas flows out of the cathode of the fuel cell unit. A conditioning unit is included to condition the hydrous fluid cathode exhaust gas flow upon exiting the cathode.

Fuel cell system with hydrous fluid flow compensation

An electrohydraulic brake system having a muscle-force-actuatable auxiliary brake and an external-force-actuatable service brake includes operating mode switchover valves triggerable by an electronic control unit for switching from the service braking state to the auxiliary braking state. A piston/cylinder unit with a pressure medium connection between a master cylinder and a wheel brake which is interrupted by the switchover valves to simulate the pedal travel in the service braking state. The piston/cylinder receives the pressure medium displaced in the master cylinder by actuation of the brake pedal by the driver's foot. The piston/cylinder unit can be hydraulically blocked in the auxiliary braking state so that pressure medium positively displaced in the master cylinder is available to the greatest possible extent for building up pressure at the wheel brakes. The subjection of the piston/cylinder unit to pressure medium is controlled via one of the operating mode switchover valves.

Electrohydraulic braking system

Method and device for controlling an automotive wheel brake, in which in a predefined operating situation, for example at a standstill, the braking force or brake pressure built up, and/or the dynamics of change, are limited. Two pressure control circuits are connected so that the pressure on the two respective wheel brakes is regulated by a pressure control circuit. A wheel brake is completely released in the predefined operating situation.

Method and device for controlling a wheel brake of a motor vehicle

A fuel cell system has at least one fuel cell unit for generating electrical energy, a unit for storing or dispensing electrical energy, an electrical consumer for consuming electrical energy, a diagnostic unit for ascertaining a functional capability of the at least one fuel cell unit during a diagnosis phase, and a control unit for determining an electrical power generated at least during the diagnosis phase by the at least one fuel cell unit.

Fuel cell system with fuel cell unit having means for storing or dispensing electrical energy

A fuel cell device has a fuel cell unit including at least two fuel cell elements which are coupled with one another in a way selected from the group consisting of a series coupling, a parallel coupling, and both, for conversion of chemical energy into an electrical energy, and an electronic control unit for controlling individual fuel cell elements of the fuel cell unit.

Fuel cell device

A vehicle has a fuel system operative to chemically reform a fuel gas, a supply unit for supplying the fuel system with the fuel gas, and a gas reservoir provided with a storage volume for an intermediate storage of the fuel gas, the storage volume having a size that is changeable.

Vehicle with a supply unit

An apparatus for converting energy can be operated with gaseous fuel, in particular a fuel cell assembly with a fuel cell, a fuel reservoir, and consumers, adjusters, sensors, and a monitoring unit. The monitoring unit ascertains consumption by the fuel cell and/or monitors components required for its operation.

Apparatus for converting energy that can be operated with fuel, in particular fuel cell assembly

The fuel cell system has a fuel cell unit and a catalytically active reactor unit () for at least partial chemical transformation of an operating medium stream (), especially a reformer, gas purifier stage and/or a combustor, in which the catalytically active reactor unit () has a variable catalytically active reactor volume () acted on by the operating medium stream. To provide the fuel cell system with a higher efficiency and good dynamic behavior the catalytically active reactor unit is provided with at least one control device () for controlling and/or for changing the variable catalytically active reactor volume () acted on by the operating medium stream (). In a preferred embodiment the control device includes a first valve () for the reactor unit arranged downstream of the maximum reactor volume and a second valve () connected with the reactor unit upstream of the first valve, so that, when the second valve is opened and the first valve is closed, the operating medium stream () passes through an effective reactor volume that is smaller than the maximum reactor volume.

Fuel cell system including a catalytically active reactor unit with flow control means

Methods and a system of controlling and/or regulating operating sequences in a brake system of a vehicle having an electronic circuit and/or control which controls and/or regulates the operating sequences and having consumers in the control and the brake system and at least one temperature detection means arranged in thermal contact with at least part of the electronic circuit and/or part of the brake system. A temperature value representing the temperature of this part is detected, and the system determines whether the temperature value exceeds at least one threshold value, where at least one measure is initiated, to reduce the temperature or to retard or stop the increase in temperature.

Method and system for controlling and/or regulating operating sequences in a motor vehicle in a brake system

An electrohydraulic brake system as well as a method and a device for controlling the electrohydraulic brake system, in which a hydraulic fluid can be injected from an accumulator into corresponding wheel brake cylinders by valve means, where the hydraulic fluid can be delivered to the accumulator by a pump, whereby means are provided for measuring the temperature of the electrohydraulic brake system, in particular the temperature of the hydraulic fluid, as well as means for taking into account the measured temperature for open- and closed-loop control of the electrohydraulic brake system.

Electrohydraulic brake system and methods for its control

A method and a device for controlling at least one valve, in response to a detected leak in the system including the valve. An activation signal is generated which opens the valve briefly for flushing purposes and closes it again, or moves the valve ball at great speed onto the valve seat.

Method and device for controlling at least one valve

Growing community of inventors

Stuttgart, Germany

Ulrich Gottwick