Patent ID: 6913005
Filing Date: 2005-07-05
Classification: F02D,F02M,Y02T

Abstract:
1. A method for controlling a fuel system and delivering fuel to an internal combustion engine, the fuel system including at least one fuel injector having at least one capillary flow passage, a heat source arranged along the at least one capillary flow passage, the heat source capable of heating the liquid fuel in the at least one capillary flow passage to a level sufficient to convert at least a portion thereof from the liquid state to a vapor state and at least one intake valve for selectively opening and closing a passageway from said at least one fuel injector to a combustion chamber within said internal combustion engine, the method comprising the steps of: (a) measuring a value indicative of degree of engine warm-up; (b) controlling power supplied to the heat source of the at least one fuel injector to achieve a predetermined target temperature, the predetermined target temperature operable to convert the portion of liquid fuel to the vapor state; and (c) simultaneously with step (b), injecting an initial fuel pulse from said at least one fuel injector while said at least one intake valve is in a substantially closed position.