Bayerische Motoren Werke Aktiengesellschaft

Uemit Cansever

Igor Gusyev

Peter Holt

A method operates a motor vehicle powertrain having at least one electric machine and an internal combustion engine, wherein the internal combustion engine has at least one first cylinder and at least one second cylinder. During a first operating phase, the first cylinder and the second cylinder are activated simultaneously so that during the first operating phase the motor vehicle is driven by way of the first cylinder and by way of the second cylinder. During a transition phase that follows the first operating phase, at least the first cylinder is switched off, while at least the second cylinder remains activated. And, during a second operating phase that follows the transition phase, the first cylinder is switched off and simultaneously the second cylinder is activated so that during the second operating phase the motor vehicle is driven at least by way of the second cylinder.

Method for operating a powertrain of a motor vehicle, in particular a car, and motor vehicle

A method actuates a starter of an internal combustion engine by way of a starter relay. The starter relay is configured to supply the starter optionally with current via an on-board electrical system. The method has the following steps: determining an error status of the internal combustion engine; commencing repeated actuations of the starter relay; determining a current status of the internal combustion engine, wherein the current status of the internal combustion engine displays at least one error status or at least one operating status; and, if the current status displays at least one operating status, ending the repeated actuation of the starter relay, otherwise once again determining the current status. A system for actuating a starter of an internal combustion engine includes a control device, a power source, a starter relay, connected to the control device and configured to supply the starter of the internal combustion engine optionally with current from the power source via an on-board electrical system, wherein the control device is configured to carry out the method.

Methods and systems for starter actuation

An electrical drive machine for a vehicle includes a brake apparatus and a gear-selection apparatus, such that the electrical machine is designed as a current-powered synchronous machine. The vehicle includes a control unit which is associated with the current-powered synchronous machine, wherein the control unit sets a field current of the rotor based on a gear-selection position set at the gear-selection apparatus and based on a position of a brake pedal of the brake apparatus.

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Holzkirchen, Germany

Uemit Cansever