Fuel supply control method for internal combustion engines, with adaptability to various engines and controls therefor having different operating characteristics

A method of controlling the fuel supply to an internal combustion engine, wherein a quantity of fuel for supply to said engine is determined by correcting a basic value of the quantity of fuel determined as a function of at least one operating parameter of said engine by correction values dependent upon operating conditions of said engine, and the determined quantity of fuel is supplied to said engine, the method comprising the steps of:

• (1) detecting a value of at least one predetermined operating parameter of said engine;
• (2) manually adjusting a single voltage creating means to set an output voltage therefrom to such a desired value as to compensate for deviation of the air/fuel ratio of a mixture supplied to said engine due to variations in operating characteristics of engines between different production lots or aging changes, a predetermined one of said correction values having a value thereof set as a function of said output voltage from said voltage creating means and dependent upon the detected value of said at least one predetermined operating parameter of said engine;
• (3) determining a value of said predetermined one correction value corresponding to said set desired value of output voltage of said single voltage creating means, and then modifying the thus determined value in response to the detected value of said predetermined at least one operating parameter of said engine during engine operation;
• and
• (4) correcting the basic value of the quantity of fuel by said value of said predetermined one correction value having the thus modified value, and the other correction values.