Patent ID: 6223716
Filing Date: 2001-05-01
Classification: B60T,B60W,F02D

Abstract:
A fuel control system for a cylinder injection type internal combustion engine, comprising:various sensor means for outputting information signals indicative of operating states of said internal combustion engine;said mode changing means setting a supplementary lean mode having an air-fuel ratio which is between said lean air-fuel ratio and said stoichiometric air-fuel ratio when said insufficient quantity of said brake operating pressure is determined to be small, and setting said nearly stoichiometric air-fuel ratio suction-stroke fuel injection mode when said insufficient quantity of said brake operating pressure is determined to be large; andwherein said control means arithmetically determines said fuel supply quantity and said intake air quantity to be fed to each of said cylinders so as to make the air-fuel ratio correspond to the control mode that has been set.