Patent ID: 7467617

Claim:
A fuel injection apparatus for an internal combustion engine which performs a direct injection operation for injecting fuel from an injector for cylinder injection into a cylinder and a port injection operation for injecting fuel from an injector for intake port injection into an intake port, comprising: a controller that: when a request to change a fuel injection mode from a mode of fuel injection from the injector for cylinder injection to a mode of fuel injection from the injector for intake port injection is made, changes the fuel injection mode of a particular cylinder at a point of time according to the request to change the fuel injection mode for the particular cylinder, wherein in the case where the request to change the fuel injection mode is made during a period after the port injection mode is set and before a direct injection mode is set, when a requested port injection mode is an intake synchronous injection mode, the controller changes the fuel injection mode to the mode of fuel injection from the injector for intake port injection simultaneously with the request to change the fuel injection mode, and when a requested port injection mode is an intake non-synchronous injection mode, the controller changes the fuel injection mode to the mode of fuel injection from the injector for intake port injection after one cycle has elapsed since the request to change the fuel injection mode is made.