Patent ID: 6539916
Filing Date: 2003-04-01
Classification: F02B,F02D,F02F,Y02T

Abstract:
A fuel injection timing control system for a direct injection internal combustion engine, which is capable of switching a fuel injection mode between a compression stroke injection mode for injecting fuel mainly during a compression stroke and an intake stroke injection mode for injecting fuel mainly during an intake stroke, comprising:a correcting unit that corrects a fuel injection timing in said intake stroke according to at least one parameter representing a tendency of fuel to adhere to an inside of said internal combustion engine, wherein when it is impossible to inject fuel of a fuel injection volume required in said intake stroke injection mode in the fuel injection timing corrected by said correcting unit, said correcting unit sets a timing for injecting remaining fuel during a compression stroke following said intake stroke in one combustion cycle to satisfy said required fuel injection volume; and a control unit that controls injection of fuel into said internal combustion engine according to the fuel injection timing corrected by said correcting unit, wherein said correcting unit detects a temperature relating to said internal combustion engine as a parameter representing the tendency of the fuel to adhere to the inside of said internal combustion engine, and corrects the fuel injection starting timing in said intake stroke to retard side as the detected temperature becomes lower.