Patent ID: 7644584
Filing Date: 2010-01-12
Classification: F02B,F02D,Y02T

Abstract:
1. A method for operating an internal combustion engine, comprising: compressing intake air using a compressor; supplying the compressed intake air to at least one combustion chamber of the engine; operating the at least one combustion chamber to output exhaust gas; directing the exhaust gas to an inlet of a turbine configured to drive the compressor; directing the exhaust gas from an outlet of the turbine to an exhaust system; determining a speed of the engine; decreasing the speed of the engine by determining a desired second configuration of the turbine, adjusting a turbine geometry from a first configuration to the desired second configuration based on the determined engine speed, and bypassing at least a portion of the compressed intake air around the at least one combustion chamber when the turbine is in the desired second configuration;