Method of and an apparatus for controlling the quantity of fuel supplied to an internal combustion engine

An apparatus for controlling the quantity of fuel supplied to an internal combustion engine, comprising:

• engine temperature detection means for detecting the temperature of the engine;
• temperature-based incremental correction means for incrementally correcting the quantity of the fuel supplied by fuel supply means to the engine, according to the detected engine temperature;
• transient operation detection means for detecting acceleration or deceleration in the engine;
• transient-operation-based correction means for incrementally or decrementally correcting the quantity of the fuel supplied by the fuel supply means to the engine, according to the detected acceleration or deceleration;
• combustion state detection means for detecting a parameter correlated to the instability of engine combustion;
• incremental correction level adjust means for adjusting an incremental correction level provided by the temperature-based incremental correction means, according to the detected parameter;
• and
• transient-operation-based correction level adjust means for adjusting a correction level provided by the transient-operation-based correction means, according to the degree of adjustment done by the incremental correction level adjust means on a reference incremental correction level.