Patent ID: 6948314
Filing Date: 2005-09-27
Classification: F01D,F02B,F02C,F04D,F05D,Y02T

Abstract:
1. A method for providing pressurized air for combustion by an internal combustion engine, the method comprising: directing exhaust gas from the internal combustion engine to a turbine housing of a turbocharger to rotate a turbine wheel rotatably disposed therein, wherein the rotation of the turbine wheel causes a compressor to also rotate within a compressor housing; directing air into the compressor housing and to the compressor, the compressor comprising two back to back oriented impellers to produce pressurized air; and controlling the flow of pressurized air exiting the compressor housing from at least one of the impellers depending on the operating conditions of the internal combustion engine wherein the step of controlling comprises actuating an annular member that is movably disposed within the compressor housing to project into an air flow path downstream of the compressor.