FUEL INJECTION CONTROL SYSTEM OF INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To accurately correct a fuel injection quantity on the basis of an intake port inside state quantity in a fuel injection control system of a port injection type internal combustion engine. SOLUTION: The port inside state quantity for expressing an inside state of an intake port is acquired (Step 102). A numerical expression model for describing the port inside state quantity as a parameter is stored for expressing evaporation behavior of fuel inside of the intake port. A rate (a sticking rate R) unsucked in a cylinder by becoming sticking fuel among injection fuel and a rate (a residual rate P) carried over up to the next cycle among the sticking fuel are calculated by substituting the port inside state quantity in the numerical expression model (Step 104 to 108). The fuel injection quantity fi for realizing a cylinder requiring fuel quantity fc is calculated on the basis of the sticking rate R and the residual rate P (Step 110 and 112). A sticking fuel quantity fw formed in a cycle of this time is calculated to the injection quantity fi (Step 114). COPYRIGHT: (C)2004,JPO