Abstract: A method is provided for operating an internal combustion engine (10) that has at least one cylinder row (11a, 11b) with multiple cylinders (12a, 12b). Each cylinder row (11a, 11b) has a first exhaust-gas turbocharger (13a, 13b) and a second exhaust-gas turbocharger (14a, 14b). The method includes providing charge air for the cylinders (12a, 12b) of the internal combustion engine (10) either exclusively by the first exhaust-gas turbocharger (13a, 13b) of the cylinder row (11a, 11b) of the internal combustion engine (10) or by both the first exhaust-gas turbocharger (13a, 13b) of the cylinder row (11a, 11b) of the internal combustion engine (10) and the second exhaust-gas turbocharger (14a, 14b) of the cylinder row (11a, 11b) of the internal combustion engine (10) in a manner dependent on an operating mode demanded by a driver and/or by a controller for the internal combustion engine (10).

Abstract: A method for operating an internal combustion engine (10) that has at least one cylinder row (11a, 11b) with first and second exhaust-gas turbochargers (13a, 13b; 14a, 14b). Charge air is provided by the first exhaust-gas turbocharger (13a, 13b) in single-charger operation, but is provided by the first and second exhaust-gas turbocharger (13a, 13b; 14a, 14b) in two-charger operation. To switch from single-charger to two-charger operation above a load threshold value of the internal combustion engine (10), when a speed of the internal combustion engine (10) 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.

Abstract: A method for operating an internal combustion engine (10) that has at least one cylinder row (11a, 11b) with first and second exhaust-gas turbochargers (13a, 13b; 14a, 14b). Charge air is provided by the first exhaust-gas turbocharger (13a, 13b) in single-charger operation, but is provided by the first and second exhaust-gas turbocharger (13a, 13b; 14a, 14b) in two-charger operation. To switch from single-charger to two-charger operation above a load threshold value of the internal combustion engine (10), when a speed of the internal combustion engine (10) 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.

Abstract: A method is provided for operating an internal combustion engine (10) that has at least one cylinder row (11a, 11b) with multiple cylinders (12a, 12b). Each cylinder row (11a, 11b) has a first exhaust-gas turbocharger (13a, 13b) and a second exhaust-gas turbocharger (14a, 14b). The method includes providing charge air for the cylinders (12a, 12b) of the internal combustion engine (10) either exclusively by the first exhaust-gas turbocharger (13a, 13b) of the cylinder row (11a, 11b) of the internal combustion engine (10) or by both the first exhaust-gas turbocharger (13a, 13b) of the cylinder row (11a, 11b) of the internal combustion engine (10) and the second exhaust-gas turbocharger (14a, 14b) of the cylinder row (11a, 11b) of the internal combustion engine (10) in a manner dependent on an operating mode demanded by a driver and/or by a controller for the internal combustion engine (10).