Patent ID: 6813887
Filing Date: 2004-11-09
Classification: F02B,F02C,F04D,F05D,Y02T

Abstract:
An exhaust-gas turbocharger for an internal combustion engine, comprising:an exhaust-gas turbine in an exhaust section, a compressor in an intake tract, the compressor comprising a compressor impeller in an inflow passage in a compressor housing, and an auxiliary-air feed device for feeding in auxiliary air which is assigned to a compressor region, wherein the auxiliary-air feed device comprises an auxiliary-air passage in the compressor housing for supplying auxiliary air which can be introduced, via an injection opening in a wall of the inflow passage of the compressor, into a flow-facing region of the compressor impeller, and wherein a recirculation opening is arranged in the wall of the inflow passage to the compressor impeller downstream of the injection opening and is connected to a bypass to the inflow passage.