Patent ID: 6185939
Filing Date: 2001-02-13
Classification: F02B,F02M,Y02T

Abstract:
An exhaust gas recirculation system for use with an engine, said engine defining a plurality of operating parameters, having a rotatable crankshaft through which an engine speed can be defined and a plurality of cylinders being defined as a part of the engine, said exhaust gas recirculation system comprising:a flow of intake air entering a respective one of said plurality of cylinders, said intake air being pressurized to a preestablished pressure;a supply of combustible fuel entering said respective one of said plurality of cylinders;a combustion process within said respective one of said plurality of cylinders defining a flow of exhaust gas having a preestablished pressure being less than said preestablished pressure of said intake air during at least a portion of said engine operating parameters;a portion of said exhaust gas being circulated to said intake air defining a flow of recirculated exhaust gas, said flow of recirculated exhaust gas being cooled prior to being pressurized to a preestablished level and said pressurization of said flow of recirculated exhaust gas being at least as great as said preestablished pressure of said intake air; andsaid flow of recirculated exhaust gas being controlled to vary a quantity of recirculated exhaust gas depending on said operating parameter of said engine, said flow of recirculated exhaust gas controlled to vary a quantity of recirculated exhaust gas being controlled by a proportional valve.