Robert Boschgmbh

Robert Bosh Gmbh

Ingo Immendoerfer

Michael Baeuerle

Michael Nau

Udo Sieber

Martin-Peter Bolz

Alex Grossmann

Gregor Dasbach

Guido Porten

Ralf Buehrle

Oliver Gerundt

Joerg Sutter

Zeynep Tosun

Evgenij Skrynski

Carsten Reisinger

Martin Kling

Oliver Laforsch

Sando Kunath

Pascal Chaumet

Ralf Diekmann

Detlef Marth

Stefan Beyer

Philip De Haan

Heiko Frey

Stefan Ruedinger

Ralph Tobias

Juergen Halfmann

Bruno Schoener

Erich Jahrstorfer

Markus Matzke

Daniel Heneberg

Karel Muk

A turbocharger for a motor vehicle, including a compressor, which has a compressor wheel situated on a rotatably supported shaft, an electric machine being situated in a pipe section of an axial compressor inlet, the electric machine including a rotor situated on the shaft and a stator situated on the pipe section. The stator has multiple webs projecting inward which are distributed over the circumference and extend at least essentially in an axial direction, the webs being used for forming flow channels which extend in an axial direction and are situated at a distance from one another.

Turbocharger including an electric machine

The invention relates to a control device () for reducing electrolytic corrosion in a brushless direct-current motor (). The control device () is designed to control phases () of the brushless direct-current motor (). The control device () has a potential equalization connection () and a potential equalization line (). The potential equalization line () is designed to connect the brushless direct-current motor () to the potential equalization connection (). An anti-corrosion resistor (R) is provided on the potential equalization line (), which anti-corrosion resistor is designed to reduce a current flow between the phases () of the brushless direct-current motor () and the potential equalization line ().

Reduction of electrolytic corrosion in a brushless direct-current motor

A method for detecting wear on at least one component of an electric bicycle includes: monitoring the operating condition of the at least one component with the aid of at least one sensor; detecting the stress on the component over the duration of operation; and displaying the need for service on a display unit as soon as a long-term load threshold defined for this component is reached, to inform the cyclist promptly of the need for service.

Method and device for detecting wear on an electric bicycle

The disclosure relates to a method for operating a positioning actuator system with an electronically commutated actuator drive for driving an actuator element, having the following steps: non-volatile storage of a position information item of the actuator element or of a rotor of the actuator drive which was detected last as a reference position before the positioning actuator system is switched off; in the case of switching on of the positioning actuator system retrieval of the reference position and actuation of the actuator drive by energizing the actuator drive in accordance with a space phasor which is dependent on the reference position. The object is to make available an improved method for releasing blockage of an actuator element or actuation after activation of a motor system with a maximum actuating torque. For positioning actuators with commutated motors such as, for example, synchronous motors.

Method and device for activating an actuator element in a motor system for a motor vehicle

Electric fuel pumps are already known with a pump housing and a ground terminal, which is provided on a terminal cover, for making contact with an electrical ground, in which the pump housing and the ground terminal are connected to one another via a ground connection, which has a first contact section for making contact with the pump housing and a second contact section for making contact with the ground terminal. The first contact section is provided on the outer circumference of a terminal cover and, after installation, is pressed with a contact pressure against the inner face of the pump housing. Since the inner face of the pump housing has increasingly been provided with an electrically insulating anticorrosion coating, however, when the terminal cover is pressed into the pump housing, touching contact with the pump housing does take place which is usually also electrically conductive, but as a result of the electrically insulating coating has a high electrical resistance. In the case of the conveying assembly according to the invention, the impedance of the contact-making is reduced. The invention provides that the first contact section is designed to have sharp edges in such a way that, when it is pushed into the pump housing, it passes locally through an electrically insulating layer formed on the pump housing.

Pumping assembly with a grounding connection having sharp edges to bite into an insulating layer of the pump housing

The invention is directed to a method and an arrangement () for controlling an electrically operated charger (), which essentially prevent a sudden drop in voltage with the run-up of the electric charger. A drive signal (AS) is formed, which drives the electric charger (). The rate of change of speed for an increase of the rpm of the electric charger () is pregiven in dependence upon the instantaneous supply voltage (UV).

Method and arrangement for controlling an electrically operated charger

A circuit arrangement for operating an electrical machine having an inductive component. The circuit arrangement includes an electrical switch (TRthrough TR) that applies a pulse-shaped signal (Sthrough S) to the electrical machine. The free-running circuit also includes an electrical switch (TRthrough TR). A comparator () is provided which compares the free-running current flowing in the free-running circuit with a predefined threshold value and, if the current drops below the threshold value, provides a switching signal (SA) that is used to deactivate the switch (TRthrough TR) in the free-running circuit. The circuit arrangement reduces both the electrical power loss in the circuit arrangement and the mechanical power loss in the electrical machine.

Circuit arrangement for operating an electrical machine

An electronically commutatable motor with a preferably three-phase excitation winding in the stator, which, in order to generate a torque for a permanent magnet rotor, can be connected to a direct current source via a motor control unit and a commutation device equipped with semiconductor switches. The motor is intended for use as a drive motor of a safety-critical auxiliary drive unit in a motor vehicle, in particular as the drive motor of an electrical power-assisted steering unit, wherein additional or existing switching means suppress or at least partially compensate for a braking moment that is generated by the motor in the event of a winding short and/or a malfunction in the semiconductor switches of the commutation device.

Electronically commutable motor

Growing community of inventors

Tamm, Germany

Ingo Immendoerfer