Patent ID: 6425366
Filing Date: 2002-07-30
Classification: F02B,F02D

Abstract:
A control system for an in-cylinder direct injection internal combustion engine, which controls an operation of said engine such that a combustion mode of said engine is switched between a stratified combustion mode for performing stratified combustion of an air-fuel mixture, and a homogeneous combustion mode for performing homogeneous combustion of said air-fuel mixture, and that torque generated by said engine is controlled based on a desired torque,the control system comprising: operating condition detection means for detecting operating conditions of said engine; required torque calculation means for calculating a required torque based on results of detection by said operating condition detection means; combustion mode determination means for determining which of said stratified combustion mode and said homogeneous combustion mode should be set to said combustion mode, according to said required torque; smoothed required torque calculation means for calculating a smoothed required torque by smoothing said required torque, in dependence on said determined combustion mode; and desired torque-setting means for setting said desired torque based on said calculated smoothed required torque.