FUEL INJECTION CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To provide a fuel injection control device of internal combustion engine capable of promoting atomization of mixture without making any complication of a structure of the internal combustion engine.SOLUTION: A fuel injection control device of internal combustion engine for controlling a single injector 6 for injecting fuel to an intake port 39 includes: a control part 4 for calculating a basic injection quantity A and additional injection quantity B injected in one cycle, on the basis of at least throttle opening TH and engine speed Ne; a basic injection quantity calculation stage FICAL for calculating the basic injection quantity A; and an additional injection quantity calculation stage TIADJ for calculating the additional injection quantity B required in response to an operating state after this FICAL. When the calculated basic injection quantity A is several times of a minimum compensation quantity TMIN that is a minimum unit enabling an injection control to be carried out by the injector 6, a transition processing for subtracting at least one unit of TMIN from the basic injection quantity A and at the same time adding it to the additional injection quantity B is performed.