METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE WITH AN EXHAUST GAS TURBO CHARGER AND A USEFUL TURBINE

摘要

In a method for operating an internal combustion engine having an exhaust gas turbocharger with an exhaust gas turbine in an exhaust tract, a power turbine arranged downstream of the exhaust gas turbine and an exhaust gas treatment unit arranged downstream of the power turbine, a pressure control device is provided in the exhaust tract downstream of the exhaust gas turbocharger and is moved toward a pressure release position so as to limit the exhaust gas pressure downstream of the exhaust gas turbine when the exhaust gas flow resistance in the exhaust gas treatment unit becomes excessive for example by a clogged particle filter.