Dr. Ing. H.c. F. Porsche Aktiengesellschaft

Michael Ebert

Andre Casal Kulzer

Ludwig Theilemann

Michael Reinhardt

Thorben Walder

A method for operating an internal combustion engine () that has at least one cylinder row () with first and second exhaust-gas turbochargers (). Charge air is provided by the first exhaust-gas turbocharger () in single-charger operation, but is provided by the first and second exhaust-gas turbocharger () in two-charger operation. To switch from single-charger to two-charger operation above a load threshold value of the internal combustion engine (), when a speed of the internal combustion engine () reaches or overshoots a threshold value, a charge pressure is increased to build up a torque reserve and a charge pressure reserve and to maintain a driver demand torque. When the charge pressure reaches or overshoots a threshold value, a switch is made from single-charger operation to two-charger operation, and subsequently, the torque reserve and the charge pressure reserve are eliminated.

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Grossbottwar, Germany

Michael Ebert