Patent ID: 7448368
Filing Date: 2008-11-11
Classification: F02B,F02M

Abstract:
1. An engine defining at least one cylinder bore, the engine comprising: an exhaust system operable to convey exhaust gases from the at least one cylinder bore, said exhaust system having at least one restriction therein; an exhaust gas recirculation passage disposed upstream from said at least one restriction and operable to communicate a portion of said exhaust gases to an air-to-air heat exchanger; wherein said air-to-air heat exchanger is operable to cool said portion of said exhaust gases; an exhaust gas recirculation valve operable to selectively and variably communicate said portion of said exhaust gases to an inlet air duct; an engine cover; and wherein said engine cover defines an opening operable to communicate ambient air to said air-to-air heat exchanger to promote the cooling of said portion of said exhaust gases.