Fuel control apparatus for internal combustion engine

A fuel control apparatus for an internal combustion engine, comprising:

• miss firing judging means for judging a miss firing state of said internal combustion engine;
• fuel property judging means for judging properties of fuel used in said internal combustion engine based on a miss firing judgment made by said miss firing judging means;
• heavy fuel correspondence controlling means for, when said fuel property judging means judges that the used fuel is heavy fuel, performing heavy fuel corresponding control for increasing the fuel amount supplied to said internal combustion engine;
• running time period calculating means for calculating a running time period of said internal combustion engine during running of said internal combustion engine;
• and
• miss firing judgment impossibility phase fuel amount increasing means for, when the running time period, at a time when said internal combustion engine is stopped, calculated by said running time period calculating means is smaller than a first judgment value, performing alternative control for increasing the fuel amount instead of the heavy fuel corresponding control in a re-startup of said internal combustion engine after said fuel property judging means judges that the used fuel is the heavy fuel.