초록 ▼

When an internal combustion engine supercharged by way of an exhaust-driven turbocharger is operated, compressed charge air is diverted as a function of the operating point of the internal combustion engine, by opening a shutoff valve in an overflow duct, out of a charge air duct leading to the inte

When an internal combustion engine supercharged by way of an exhaust-driven turbocharger is operated, compressed charge air is diverted as a function of the operating point of the internal combustion engine, by opening a shutoff valve in an overflow duct, out of a charge air duct leading to the internal combustion engine into an exhaust gas duct to the turbine of the exhaust-driven turbocharger in the presence of a driving pressure drop. In order to optimize supercharging performance over the entire operating characteristics diagram of the internal combustion engine, and decrease the exhaust emissions of the internal combustion engine, provision is made for the overflow duct to be enabled as necessary, for the recirculation of exhaust gas into the charge air duct, when a pressure drop driving toward the charge air duct is present.

대표청구항 ▼

1. A method for operating an internal combustion engine that is supercharged using an exhaust gas-driven turbocharger, the method comprising;opening a shut-off valve in an overflow duct connecting a charge air duct of the engine to an exhaust gas duct of the engine so as to divert at least a portion

1. A method for operating an internal combustion engine that is supercharged using an exhaust gas-driven turbocharger, the method comprising;opening a shut-off valve in an overflow duct connecting a charge air duct of the engine to an exhaust gas duct of the engine so as to divert at least a portion of compressed charge air in the charge air duct into the exhaust gas duct and to a turbine of the exhaust driven supercharger, the opening being performed as a function of an operating point of the engine and as a function of a first pressure drop from the charge air duct to the exhaust gas duct; and enabling a recirculation of at least a portion of the exhaust gas from the exhaust gas duct to the charge air duct as a function of the operating point of the engine and as a function of a second pressure drop from the exhaust gas duct to the charge air duct.