Fuel supply control system for internal combustion engine

A fuel supply control system for an internal combustion engine comprising:

• startup fuel amount calculating means for calculating, during startup of the engine, a fuel amount to be supplied to the engine according to a start fuel amount calculating method;
• after-startup fuel amount calculating means for calculating, after startup of the engine, a fuel amount to be supplied to the engine according to an after-startup fuel amount calculating method;
• and
• fuel supply means for supplying the fuel amount calculated by said startup fuel amount calculating means to said engine during startup of said engine, and supplying the fuel amount calculated by said after-startup fuel amount calculating means to said engine after startup of said engine;
• wherein said fuel supply means includes transition control means for smoothly performing a transition from the fuel amount calculated by said startup fuel amount calculating means to the fuel amount calculated by said after-startup fuel amount calculating means.