Patent ID: 7254948

Claim:
A method of operating an internal combustion engine with an exhaust gas recirculation system, the method comprising: flowing air into the internal combustion engine through an air intake conduit operatively coupled to an intake manifold of the internal combustion engine; compressing at least a portion of the air delivered to the engine with a compressor operatively coupled to the intake conduit; flowing fuel into the internal combustion engine; mixing at least a portion of the fuel with at least a portion of the air to create a gas/air mixture; combusting the gas/air mixture in the engine to produce engine exhaust; passing at least a portion of the engine exhaust through an exhaust conduit of the internal combustion engine; recirculating a portion of the engine exhaust into the intake manifold through an exhaust gas recirculation conduit of the internal combustion engine; and selectively venting at least a portion of the air in the air intake conduit to alter a rate of said at least a portion of engine exhaust through the exhaust gas recirculation conduit and increase the surge margin of the compressor.