IC engine exhaust gas turbocharger operating method has regulator controlling ratio between turbine flow cross-section and cross-section of flow connection between engine combustion spaces and exhaust line

摘要

The turbocharger operating method has the turbine geometry (5) of the turbine (3) of the turbocharger (2) altered during the engine braking mode, for providing a reduced flow cross-section, with a flow connection between the engine cylinder combustion spaces (13) and an exhaust gas line (7) provided by opening a braking valve (9). A regulator (10) controls the ratio between the turbine flow cross-section and the flow cross-section of the flow connection between the combustion spaces and the exhaust gas line in dependence on the engine revs.