Patent ID: 6371092
Filing Date: 2002-04-16
Classification: F02D,F02F,F02M,Y02T

Abstract:
An apparatus for controlling the delivery of fuel to an internal combustion engine, said engine having an intake manifold for receiving a fuel-air mixture and a plurality of cylinders for facilitating combustion of said fuel-air mixture, said apparatus comprising:at least one fuel supply for storing and dispensing fuel; at least one primary fuel injector in fluid flow communication with said at least one fuel supply; a fuel-air mixer in fluid flow communication with said at least one primary fuel injector and said intake manifold, said fuel-air mixer being located upstream of said intake manifold, said fuel-air mixer having an air intake port for receiving air and a fuel port for receiving a primary amount of said fuel from said at least one primary fuel injector, said primary amount of said fuel being a majority of the total fuel required for combustion in said plurality of cylinders, said air and said primary amount of said fuel forming a primary fuel-air mixture; and a plurality of secondary fuel injectors respectively located adjacent each of said plurality of cylinders, said plurality of secondary fuel injectors being in liquid flow communication with said at least one fuel supply and said fuel-air mixer, each of said plurality of secondary fuel injectors being adapted for injecting a secondary amount of said fuel to be mixed with said primary fuel-air mixture, said secondary amount of said fuel being tailored for each respective one of said plurality of cylinders such that each of said plurality of cylinders receives an appropriate amount of fuel required for combustion.