Patent ID: 7562650

Claim:
A start-up control apparatus for an internal combustion engine, comprising: operation stopping means that stops actuation of a fuel injection valve that injects fuel into an intake passage of said internal combustion engine and actuation of a spark plug that ignites in a cylinder of said internal combustion engine when operation stop conditions for said internal combustion engine are satisfied; predicting means that predicts a position at which rotation of an engine output shaft of said internal combustion engine stops due to the actuation of said fuel injection valve and said spark plug being stopped, and predicts based on said position, a stopped compression-stroke cylinder, which is in a compression stroke when operation of said internal combustion engine is stopped; fuel injection control means that re-actuates said fuel injection valve of said stopped compression-stroke cylinder that is predicted by said predicting means immediately before the rotation of said engine output shaft stops; and start-up control means that actuates said spark plug of said stopped compression-stroke cylinder that is predicted by said predicting means when the start-up conditions for said internal combustion engine are satisfied; correcting means that corrects a position at which said predicting means predicts that said engine output shaft stops, based on a position at which said engine output shaft stops or a state of the rotation of said engine output shaft immediately before said engine output shaft stops; stop position detecting means that detects the position at which the rotation of said engine output shaft stops; and fuel injection amount calculating means that predicts, during a predetermined time interval after the engine start-up, an amount of intake air that is drawn into said cylinder based on the engine speed, the position at which said engine output shaft stops, volume in the intake passage, and the number of times that the intake stroke has been carried out, and calculates a fuel injection amount for said cylinder based on the predicted amount of air, wherein said fuel injection control means re-actuates said fuel injection valve of the stopped intake-stroke cylinder that is predicted by said predicting means to be in the intake stroke based on the position at which said engine output shaft stops, and switches an actuation timing of said fuel injection valve based on the position at which said predicting means predicts that said engine output shaft stops, and said start-up control means switches an ignition timing at which said spark plug is actuated based on the position at which said stop position detecting means detects that said engine output shaft stops.