Monitoring bi-turbocharger revolution rate involves determining value representing engine exhaust gas composition, determining first charger revolution rate depending on first exhaust gas value

摘要

The revolution rate monitoring method involves determining a first exhaust gas value (lambda1) representing the composition of the exhaust gas of the internal combustion engine (1) and determining a first revolution rate representing the revolution rate of the first charger (8) depending on the first exhaust gas value. The revolution rate of a second turbocharger (9) can be determined depending on a second exhaust gas value.