Internal combustion engine control method

The internal combustion engine is selectively perform the first combustion and second combustion, the first combustion is soot generation amount of the EGR gas ratio in the combustion chamber (5) for the EGR gas amount is more than the maximum value, almost no soot is produced, the second combustion chamber is the combustion ratio of the EGR gas generation amount of soot (5) in the EGR gas is less the maximum value. When the first combustion and the second combustion is switched, the injection timing is delayed until after top dead center of the compression.