Patent ID: 6386173
Filing Date: 2002-05-14
Classification: F02D,Y02T

Abstract:
An in-cylinder injection type internal combustion engine for injecting a fuel into a combustion chamber from a fuel injection valve arranged to confront said combustion chamber, comprising:air/fuel ratio detecting means disposed in an exhaust passage of said internal combustion engine for detecting an exhaust air/fuel ratio; and operation mode switching means having a first operation mode for injecting the fuel in a suction stroke while making an air/fuel ratio feedback control performing a stoichiometric air/fuel ratio as a first target air/fuel ratio, and a second operation mode for injecting the fuel in a compression stroke while making an air/fuel ratio feedback control performing a predetermined air/fuel ratio in the vicinity of the stoichiometric air/fuel ratio as a second target air/fuel ratio, wherein said operation mode switching means switches said first operation mode and said second operation mode selectively under a predetermined condition.