Patent ID: 6705274
Filing Date: 2004-03-16
Classification: F02B,F02F,F02M,Y02T

Abstract:
An in-cylinder direct injection spark-ignition internal combustion engine capable of switching between a homogeneous combustion mode in which homogeneous-charge early fuel injection is executed on an intake stroke and a stratified combustion mode in which stratified-charge late fuel injection is executed on a compression stroke, comprising:a fuel injector having an orifice nozzle tip in which a nozzle hole is formed to inject fuel through the nozzle hole directly into a combustion chamber; a spark plug that provides a discharging gap in the combustion chamber; and a swirl-generating device that gives rotational momentum to the fuel injected into the nozzle hole, the orifice nozzle tip having an inclined surface that is formed on an end face of the orifice nozzle tip and inclined by a predetermined inclination angle with respect to a reference plane normal to an orifice axis of the nozzle hole, and the nozzle hole being formed within the inclined surface.