Method and device for register supercharging an internal combustion engine

摘要

The engine has two turbo chargers (3,4). The first one is constantly connected to the engine (2), the second one is switched on/off dependent upon engine load. With smaller load variations, the turbine cross section of the first turbo charger is increased/decreased. A further charger is connected/disconnected, when a set shift point is reached, at which the variations can no longer be compensated for by cross sectional changes. Simultaneously with switching on/off of the second charger, the cross section of the first charger is correspondingly changed. Subsequent load variations are compensated for by cross section changes of the first turbo charger.