Robert Boschgmbh

Lanouar Chouk

Gunther Goetting

Lutz Reuschenbach

Markus Amler

Christoph Woll

Guido Porten

Uwe Mueller

Ralf Buehrle

Patrick Menold

Sabine Wegener

Richard Hotzel

Jan-Mathias Meng

Kristina Milos

Raimundo Varas Manso

The invention relates to a control device for an electric machine with a stator and a rotor, comprising a temperature detection device which is designed to detect the temperature of the stator and the temperature of the rotor, as well as a calculation device which is designed to adjust the operating point of said electric machine on the basis of a specified torque, the detected temperature of the stator, the detected temperature of the rotor, and a predefined thermal load distribution of said stator and rotor. The invention also relates to a vehicle and to a corresponding method for controlling an electric machine.

Control device for an electric machine, a vehicle, and a method

The invention relates to a method for operating an electric machine (), in particular of a motor vehicle (), having a stator () with at least one stator coil. The stator coil is energized in order to set a required torque of the electric machine (), and a temperature of the stator () of the electric machine () is detected by means of a temperature sensor (). The current flowing through the stator coil is monitored in order to plausibility-check the detected temperature. In order to plausibility-check the temperature, the current in the stator coil is increased while maintaining the same torque, and the temperature is monitored for a temperature increase.

Method and device for operating an electric machine, and motor vehicle

The invention relates to a method and an apparatus for determining an exhaust gas recirculation rate in an internal combustion engine, in which the exhaust gas recirculation rate indicates a proportion of exhaust gas in a gas quantity delivered to a cylinder of the internal combustion engine, and combustion takes place in the cylinder of the engine cyclically during a combustion phase. The method includes the steps of ascertaining a combustion course statement over the course of combustion in the cylinder of the engine, and ascertaining an actual exhaust gas recirculation rate from the combustion course statement with the aid of a predetermined exhaust gas recirculation rate function. The invention further relates to a method and an apparatus for regulating an exhaust gas recirculation rate in an internal combustion engine, in which the exhaust gas recirculation rate indicates a proportion of exhaust gas in a gas quantity delivered to a cylinder of the internal combustion engine, and combustion takes place in the cylinder of the engine cyclically during a combustion phase. The method includes the steps of ascertaining a combustion course statement over the course of combustion in the cylinder of the engine, furnishing a set-point statement as a function of an operating point of the engine, and performing a regulation to compensate for a deviation that results from the set-point statement and the combustion course statement.

Method and apparatus for determining and regulating an exhaust gas recirculation rate of an internal combustion engine

A method for setting a mass flow rate of air to be provided in a charging mode; in the charging mode (where a throttle valve is open), the pressure prevailing in an induction pipe only being set via an adjustable mass flow rate of supplied air; a requested torque corresponding to a mass flow rate of air into a cylinder, the mass flow rate of air into the cylinder being adjustable via the pressure in the induction pipe; to set the mass flow rate of air into the cylinder, the pressure in the induction pipe being adjusted by a control system in accordance with a specifiable dynamic charge response characteristic.

Method and device for controlling a charging device of an internal combustion engine during a charging mode

A method and device for operating an internal combustion engine, which diagnose and/or adapt the exhaust-gas recirculation system for, in particular, multibranch internal combustion engines. In this context, the internal combustion engine includes at least one adsorption catalyst in at least one exhaust branch. In addition, at least one exhaust-gas recirculation duct is provided, which is equipped with an exhaust-gas recirculation valve and feeds exhaust gas from the at least one exhaust branch back into at least one air-supply duct, a level of pollutant stored in the at least one adsorption catalyst being ascertained in a first operating state of the internal combustion engine when the exhaust-gas recirculation valve is at least partially open, so that a first value for the pollutant level is produced. In a second operating state of the internal combustion engine, a second value for the pollutant level in the at least one adsorption catalyst is ascertained when exhaust-gas recirculation valve is closed. The first value of the pollutant level is compared to the second value of the pollutant level. A diagnosis and/or an adaptation of an exhaust-gas recirculation system formed by the at least one exhaust-gas recirculation duct, along with its exhaust-gas recirculation valve and its drive circuit, is carried out as a function of the comparison result.

Method and device for operating an internal combustion engine

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Guendelbach, Germany

Lanouar Chouk