Patent ID: 6904890

Claim:
A start-up fuel injection control device for an in-cylinder fuel injection internal combustion engine which operates on a four-stroke cycle constituted by an intake stroke, a compression stroke, an expansion stroke, and an exhaust stroke, the engine comprising a fuel injector which injects fuel directly into a combustion chamber, the control device controlling a fuel injection timing in accordance with a rotation speed of the engine, and a fuel pressure at which fuel is supplied to the fuel injector, the control device comprising: a programmable controller programmed to: set a target fuel injection amount during start-up which corresponds to an air-fuel ratio in the vicinity of a stoichiometric air-fuel ratio; determine whether or not a compression stroke fuel injection condition has been established on the basis of the target fuel injection amount during start-up, the engine rotation speed, and the fuel pressure; and control the fuel injector to inject fuel during the compression stroke only when the compression stroke fuel injection condition has been established.