Patent ID: 6382176
Filing Date: 2002-05-07
Classification: F02B,F02D,F02F,Y02T

Abstract:
A method of controlling fuel injection flow in a cylinder of an internal combustion engine comprising steps of:providing a piston head of the engine with a combined flow redirector and holding bowl recess extending into a top side of the piston head; providing a fuel injection port in the cylinder in a bottom portion of a swept volume of the cylinder located above the top side of the piston head when the piston is at a bottom dead center position; injecting fuel from the injection port into the recess, wherein the step of injecting comprises: injecting the fuel at a first velocity when the engine is operating at a first speed, and injecting the fuel at a second faster velocity when the engine is operating at a second faster speed, wherein the recess holds a substantial portion of the injected fuel when the fuel is injected at the first velocity which is then subsequently transported in the recess to a spark plug of the engine as the piston moves towards a top dead center position, and wherein the recess redirects a substantial portion of the injected fuel out of the recess when the fuel is injected at the second faster velocity.