Patent ID: 7150273
Filing Date: 2006-12-19
Classification: F01N,F02B,F02M,Y02T

Abstract:
1. An internal combustion engine comprising; a plurality of cylinders, each of said cylinders having a corresponding exhaust valve, said cylinders being divided into at least a first set and a second set; an exhaust manifold, said exhaust manifold further having at least a first branch and a second branch, said first branch being in direct fluid communication with said cylinders in said first cylinder set and said second branch being in direct fluid communication with said cylinders in said second cylinder set when said corresponding exhaust valves are in an open position; an internal exhaust gas recirculation arrangement, allowing at least part of the exhaust gas to flow from said exhaust manifold into said cylinders during at least part of an intake stroke of said cylinders; a turbocharger connected to said exhaust manifold; and a passage located in or proximal to said exhaust manifold and proximate to said turbocharger for fluidly connecting said first branch and said second branch to reduce the flow of exhaust gas from said exhaust manifold into said cylinders.