Fuel supply control method for internal combustion engines in high load operating conditions

摘要

A method of controlling the fuel supply to an internal combustion engine in response to operating conditions thereof. First and second groups of basic fuel quantity values are set beforehand as a function of a first engine operation parameter including at least the engine rotational speed, the basic fuel quantity values of the second group being each larger than a corresponding one of those of the first group for the same first engine operation parameter value. When it is determined from a detected second engine operation parameter value indicative of engine load that the engine is operating in a predetermined high load condition, one basic fuel quantity value of the second group is selected that corresponds to a detected first engine operation parameter value, and corrected by a fuel increment based upon a detected engine temperature value and the detected second engine operation parameter value. A fuel quantity is set on the basis of the corrected one basic fuel quantity and supplied to the engine. When the engine is determined to be operating in a condition other than the predetermined high load condition, one basic fuel quantity value of the first group is selected that corresponds to the detected first engine operation parameter value, to set, on the basis thereof, a fuel quantity for supply to the engine.