Patent ID: 7010916

Claim:
An exhaust-gas turbocharger for an internal combustion engine, including a compressor ( 5 ) having a compressor wheel ( 8 ) with a shaft ( 7 ) and a wheel back ( 32 ) which is cooled by a coolant, and at least one nozzle ( 35 ) arranged in a first cooling space ( 46 ) adjacent the shaft ( 7 ) of the compressor wheel ( 8 ) for spraying coolant directly onto the wheel back ( 32 ) adjacent the radially inner end thereof, so that the coolant flows radially outwardly along the rear wall of the compressor wheel, said nozzle ( 35 ) being arranged such that a radial distance (a) between the center of the nozzle ( 35 ) and an outer surface ( 37 ) of the shaft of the compressor ( 5 ) does not exceed the radius of the shaft ( 7 ).