Patent ID: 6267307
Filing Date: 2001-07-31
Classification: F02B,F02M,Y02T

Abstract:
A fuel injector for a direct-injection internal combustion engine, the fuel injector comprising: a tip having at least one outlet orifice from which gasoline enters an engine combustion chamber when the injector is in an open position and gasoline is delivered to the outlet orifice, a movable throttle being moved back from a seat by actuating means against return means, which return the throttle to its seat and retain it against said seat when the injector is in a closed position, and immediately downstream of and around said outlet orifice relative to the direction in which the gasoline is delivered, the external face of the tip has at least one kink bounding a recess in the external face of the tip and in that a coating of ceramic is deposited at least in said recess.