Patent ID: 7195000
Filing Date: 2007-03-27
Classification: F02B,F02M,Y02T

Abstract:
1. A fuel injector for an internal combustion engine comprising: an injector body having a fuel outlet; and a spray hole formed in the fuel outlet, said spray hole being geometrically designed to produce a spray of fuel in a predetermined pattern so that substantially 70% or more of an amount of the spray hits a preselected area on a surface of a head of an intake valve of an engine when the intake valve is closed, the preselected area being one of a first and a second area on the surface of the head of the intake valve which are defined on respective sides of a reference boundary line extending through a joint of the head of the intake valve with a stem of the intake valve, the first area being closer to an intake manifold of the engine, the second area being closer to an exhaust valve of the engine, the preselected area being the first area, wherein a pattern defined on the surface of the head of the intake valve by the spray of fuel emitted from said spray hole has a first length and a second length, the first length extending in a forward advancing direction in which the spray of fuel is emitted from the spray hole on the surface of the head of the intake valve, the second length extending perpendicular to the direction of the first length and being longer than the first length.