Exhaust gas recirculation control system

Abstract

Past exhaust emission control systems fail to utilize exhaust gas recirculation during all operating parameters of an engine. The present exhaust gas recirculation system reduces the emissions emitted from an engine during all operating parameters of the engine. The engine includes a cylinder, a rotatable crankshaft and a turbocharger defining a compressor section compressing a flow of intake air to a first preestablished pressure and being driven by a flow of exhaust gas having a first preestablished pressure. The exhaust gas recirculation system is comprised of a portion of the flow of exhaust gas being recirculated to the cylinder and forming a flow of recirculated exhaust gas. The flow of recirculated exhaust gas is cooled. The flow of recirculated exhaust gas is compressed to a second preestablished pressure being at least equal to the first preestablished pressure of the intake air. And, a quantity of the flow of recirculated exhaust gas is controlled depending on the operating parameter of the engine.

Dependencies are inferred from the claim text.