Patent ID: 6748314
Filing Date: 2004-06-08
Classification: F02D

Abstract:
A fuel injection amount control system for an internal combustion engine, comprising a compensation term for compensating a fuel transportation lag by using a fuel transportation lag model obtained by modeling a fuel transportation lag of a fuel transportation system for transporting a fuel injected from a fuel injection valve into an intake system so as to be taken into a cylinder of an internal combustion engine,wherein physical parameters including at least one of a fuel vaporization time constant and a wall face adhesion rate of an injected fuel, included in the fuel transportation lag model, are converted to adaptation parameters; and the adaptation parameters include a reference adaptation parameter and a correction factor, and one of a system identification value and a physical measurement value is used as the reference adaptation parameter, and a wall face adhesion correction amount, obtained by using the reference adaptation parameter, is corrected by the correction factor.