Other

Compact Dynamics Gmbh

Continental Isad Electronic Systems Gmbh & Co. Kg

Grundl Und Hoffmann Gmbh

Grundl Und Hoffmann Gmbh Gesellschaft Fur Elektrotechnische

Andreas Gr&uuml;ndl

Bernhard Hoffmann

Thomas Pels

Klaus-Peter Zeyen

Ullrich Masberg

The present invention relates to a gas exchange valve drive for a valve-controlled combustion engine with a hollow cylindrical rotor ( ) to be coupled with a valve member ( ) and a stator ( ), wherein the rotor ( ) comprises permanent-magnetic rings ( ) concentrically arranged one above the other, the stator ( ) is at least partially constructed of a soft magnetic material and comprises at least one tooth ( ) facing towards the rotor ( ), the stator ( ) comprises a radially inner magnetically conductive area ( ) and a radially outer magnetically conductive area ( ), with the rings ( ) of the rotor ( ) being arranged between the inner area ( ) and the outer area ( ) of the stator ( ), and the outer area ( ) of the stator ( ) in at least one partial section ( ) is designed with a C-shaped cross-section and comprises at least one stator coil ( ).

Gas exchange valve drive for a valve-controlled combustion engine

Half-bridge assembly for switching electrical power, wherein at least two semiconductor switches are connected in series forming a half-bridge; each semiconductor switch comprises a control input, the first semiconductor switch comprises a first power terminal which can be connected with a high voltage potential; the second semiconductor switch comprises a second power terminal which can be connected with a low voltage potential; a second power terminal of each first semiconductor switch is connected with a first power terminal of the respective second semiconductor switch; each of the semiconductor switches comprises a free-wheeling diode which is located parallel to both power terminals of the respective semiconductor switch; and a Schottky diode is connected in parallel to each free-wheeling diode, each semiconductor switch with its free-wheeling diode and each Schottky diode is connected with a heat sink in a heat conductive manner, with the thermal resistance between each Schottky diode and the heat sink being dimensioned larger than the thermal resistance between each free-wheeling diode and the heat sink.

Half-bridge subassembly

The invention concerns a drive system, especially for a motor vehicle, with a multicylinder internal combustion engine, a device for shutting off at least some of the cylinders of the internal combustion engine, and a device for active reduction of rotational nonuniformities, acting in particular on a shaft, such as a drive shaft of the internal combustion engine, or a shaft that is coupled or which can be coupled to it, which is active at least for certain operating states during cylinder shutoff mode. A method of operating such a drive system is also disclosed.

Drive system, particularly for a motor vehicle, and process for operating it

The invention concerns a drive system with a drive motor ( ), especially an internal combustion engine of a motor vehicle, and a drive train ( ); an electric machine ( ), which can apply a braking and/or driving torque to the drive motor ( ) and/or drive train ( ) and/or form a coupling in the drive train ( ); and an open-loop/closed-loop control system, which controls/regulates the electric machine such that it diminishes drive train torque and/or speed fluctuations. Moreover, the invention concerns a method for operating such a machine ( ) in a drive system, wherein a drive train time function of the torque and/or speed is controlled/regulated, and in particular smoothed out, with the steps a) detection of the drive train torque and/or a rotary speed of the drive train ( ) and/or a quantity derived from these quantities (Step A); b) determination of the torque and/or speed fluctuations (Step B); c) actuation of the electric machine so that it diminishes the torque and/or speed fluctuations (Step C).

Drive system, electric machine for use in a drive system, and method for operating an electric machine in a drive system

The invention relates to a travelling wave machine which includes a stator and a rotor, wherein at least one stator coil and/or one rotor coil is arranged in at least one groove of the stator or the rotor, respectively, and wherein the stator coil or the rotor coil, respectively, projects from the groove at both sides in a longitudinal direction under the formation of a coil head, characterized in that the cross section of the stator coil or of the rotor coil, respectively, in the area of the respective groove differs from the cross section of the stator coil or the rotor coil, respectively, in the area of the coil head.

Travelling-wave motor and method for producing same

The invention concerns a system for active reduction of rotational nonuniformities of a shaft, especially the drive shaft ( ) of an internal combustion engine or a shaft that is coupled or can be coupled to it, with at least one electric machine ( ), which is coupled or can be coupled to the shaft, wherein the electric machine ( ) is controlled such that it generates a rapidly varying torque, to reduce the rotational nonuniformities, and it superimposes on this torque a positive or negative torque in order to further achieve a driving action or braking or generator type action. The invention is also oriented to a corresponding method for active reduction of rotational nonuniformities.

System for actively reducing rotational nonuniformity of a shaft, in particular, the drive shaft of an internal combustion engine, and method for this

The invention concerns a starter/generator for an internal combustion engine ( ), especially that of a motor vehicle, with an electric rotary-field machine ( ), which exercises the starter and generator function; and at least one invertor ( ) for generating the voltages and/or currents of variable frequency, amplitude and/or phase required for the magnetic fields of the electric machine ( ); wherein the electric machine ( ) starts the internal combustion engine ( ) by merging in from standstill.

Starter/generator for an internal combustion engine, especially an engine of a motor vehicle

The invention relates to an assembly for switching electrical power, wherein a semiconductor switch is arranged in a pressure-resistant vessel which is partially filled with an inert liquid in order to effect a fluid cooling of the semiconductor switch during operation, characterised in that the interior of the vessel is coupled with a cooling circuit, with at least one vapor line leading from the vessel to a radiator, and at least one liquid line leading from the radiator to the vessel, with the liquid line being arranged at least sectionwise within the vapor line and being extended from a connection point at the vessel into the interior of the vessel to such a length that its free end opens below the liquid level of the cooling liquid.

Assembly for switching electrical power

The invention concerns a drive system with a drive motor (,), especially the internal combustion engine of a motor vehicle, an electric machine (,), which provides additional driving action, and at least one short-duty battery (,), which furnishes at least some of the energy required during the driving action of the electric machine (,).

Drive system with drive-motor, electric machine and battery

The invention concerns a drive system, especially for a motor vehicle, with a drive assembly, especially an internal combustion engine; an electric machine that is directly coupled or can be coupled to the drive shaft of the drive assembly, being designed such that it can start the drive assembly by merging in from standstill; and an automatic start-stop control of the drive assembly. The invention is also addressed to a method for operating such a drive system.

Drive system, especially for a motor vehicle, and method of operating same

Drive system, especially for a motor vehicle, with a drive assembly, especially an internal combustion engine (,), an electric machine (,) and an antislip control, in which the (one) electric machine (,) is designed such that it can produce a reduction of drive slip, in particular by braking action and/or&mdash;when the electric machine (,) is acting as a coupling&mdash;by clutch slip action.

Growing community of inventors

München, Germany

Andreas Gründl

Growing community of inventors

München, Germany

Andreas Gr&uuml;ndl

Andreas Gründl