Robert Boschgmbh

Rainer Weigand

Jens Wagner

Karl Dums

A method for controlling an electrically supported exhaust gas turbocharger. A planned effective turbine area is ascertained in an observing path for the electrically supported exhaust gas turbocharger and an observed effective turbine area is ascertained in a planned controlling path. A correction signal for the electrically supported exhaust gas turbocharger is ascertained as a function of the difference between the planned effective turbine area and the observed effective turbine area and an actuator being controlled as a function of the planned effective turbine area and/or the electric machine being activated for controlling the electrically supported exhaust gas turbocharger.

Method for controlling an electrically supported exhaust gas turbocharger

The invention relates to a method and an arrangement for controlling a drive unit (), especially of a vehicle, having a combustion engine (). The method and arrangement make possible a correct charge control when utilizing a secondary air charger () as well as make possible a diagnosis of the secondary air charger (). Secondary air is blown into an exhaust-gas system () of the combustion engine () via the secondary air charger (). The secondary air charger () is driven by a pressure drop across an actuating element () for adjusting an air supply to the engine (). The actuating element () is driven for adjusting an air supply to the engine () corrected in dependence upon an air mass flow driving a turbine () of the secondary air charger ().

Growing community of inventors

Ludwigsburg, Germany

Rainer Weigand