Patent ID: 6484702
Filing Date: 2002-11-26
Classification: F02B,F02D,F02M,Y02T

Abstract:
A method for reducing engine deposits to an internal combustion engine, said engine having a first plurality of cylinders, a second plurality of cylinders, a fuel injection system for injecting fuel into both of said first and second plurality of cylinders, and an exhaust gas recirculation system for supplying a portion of the exhaust gases from the engine to both of said first and second plurality of cylinders, the method comprising the steps of:operating the engine to repeatedly combust fuel in both of said first and second plurality of cylinders; supplying additional fuel to said first plurality of cylinders following each combustion of fuel therein; and supplying recirculated exhaust gases to said second plurality of cylinders, wherein the interaction of post combustion injected fuel and recirculated exhaust gases is prevented and the amount of deposition of undesirable materials in the engine is reduced.