Patent ID: 7290520

Claim:
A method of providing combustion with a combustion chamber of an internal combustion engine, comprising: providing air into the combustion chamber; initiating a fuel injector to inject fuel into the combustion chamber through a nozzle tip of the fuel injector before auto ignition conditions exist within the combustion chamber; and compressing the air and fuel mixture in the combustion chamber to auto-ignite the mixture, the nozzle tip including, an outer nozzle tip surface portion; an inner nozzle tip surface portion; a plurality of passages allowing fluid communication between the inner nozzle tip surface portion and the outer nozzle tip surface portion and directly into a combustion chamber of an internal combustion engine, each of the plurality of passages having an inner surface aperture on the inner nozzle tip surface portion and an outer surface aperture on the outer nozzle tip surface portion; a first group of said passages having outer surface apertures located substantially in a first common plane; and a second group of said passages having outer surface apertures located substantially in at least a second common plane substantially parallel to the first common plane; further including forming a plurality of fuel plumes in the combustion chamber, each of the plurality of fuel plumes corresponding to one of said plurality of passages and sharing a longitudinal axis with the corresponding passage, the axis of each passage extending into a piston of the combustion chamber at a piston position of approximately 30 degrees before top dead center.