Patent ID: 7096841

Claim:
A start control apparatus of an internal combustion engine comprising: a valve system capable of optionally changing a valve operation characteristic of at least any one of an intake valve and an exhaust valve; a start demanding device for demanding a start of the internal combustion engine; a starting device for starting the internal combustion engine; a detecting device for detecting a first combustion at the time of starting the internal combustion engine; a determining device for determining a possibility of self-ignition of the internal combustion engine at a time when a start demand is issued from the start demanding device; and a start procedure control device for changing the valve operation characteristic of at least any one of the intake valve and the exhaust valve by the valve system so as to prevent a pressure in a combustion chamber of the internal combustion engine from increasing more than a predetermined pressure in the case where the determining device determines that the possibility of the self-ignition of the internal combustion engine is higher than a predetermined level, thereafter starting the internal combustion engine by the starting device, and returning the changed valve operation characteristic to a state before being changed after the detecting device detects the first combustion of the internal combustion engine.