Supercharged internal combustion engine

摘要

A supercharged internal combustion engine may include an exhaust gas turbocharger which is integrated into an exhaust section on the turbine side and into an intake section on the compressor side. An exhaust gas recirculation line may connect the exhaust section and the intake section. The exhaust gas recirculation line may branch off from the exhaust section downstream of a turbine of the exhaust gas turbocharger and opens into the intake section upstream of a compressor. A valve device for performing at least one of open-loop and closed-loop control of an exhaust gas recirculation rate may be arranged in the region of the exhaust gas recirculation line.

主权项

1. A supercharged internal combustion engine, comprising:
an exhaust gas turbocharger which is integrated into an exhaust section on a turbine side and into an intake section on a compressor side, and an exhaust gas recirculation line connecting the exhaust section and the intake section; wherein the exhaust gas recirculation line branches off from the exhaust section downstream of a turbine of the exhaust gas turbocharger and opens into the intake section upstream of a compressor; and a valve device for performing at least one of open-loop and closed-loop control of an exhaust gas recirculation rate arranged in a region of the exhaust gas recirculation line; wherein the valve device divides the exhaust section into a first exhaust gas duct, a second exhaust gas duct distinct from the first exhaust gas duct and an exhaust gas recirculation duct, the exhaust gas recirculation duct fluidly connected to the exhaust gas recirculation line, and wherein the valve device is configured to close at least one of the second exhaust gas duct and the exhaust gas recirculation duct; wherein the valve device includes a displaceable valve piston, the valve piston being displaceable in an axial direction along a reciprocating axis for performing at least one of open-loop control and closed-loop control of the exhaust gas recirculation rate; and wherein the valve piston includes two sections each having a different radii from one another, and wherein one section of the valve piston is configured to close the exhaust gas recirculation duct and the other section of the valve piston is configured to close the second exhaust gas duct.