Patent ID: 7438063
Filing Date: 2008-10-21
Classification: F02B,F02M,Y02T

Abstract:
1. An exhaust gas recirculation system of a vehicle, comprising: a cylinder block; a water jacket disposed in the cylinder block and configured for coolant to flow therein; a cylinder head attached to the cylinder block; a cylinder disposed in the cylinder block and the cylinder head, the cylinder comprising an intake hole and an exhaust hole; an intake manifold runner connected to the intake hole; an exhaust manifold runner connected to the exhaust hole; a first recirculation gas pathway disposed in the cylinder block, connected the exhaust manifold runner, and configured to receive recirculated exhaust gas from the exhaust manifold runner; a second recirculation gas pathway disposed in the cylinder head and comprising a first end in fluid communication with the first recirculation gas pathway and a second end in fluid communication with the intake manifold runner, wherein the second recirculation gas pathway comprises first and second pathway portions, fluidly isolated from one another; a recirculation valve mounted at the second recirculation gas pathway, for controlling supply of the recirculated exhaust gas to the intake manifold runner; and an engine control unit for controlling the recirculation valve.