| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a control method and a control device for an internal combustion engine controlling a valve opening of an EGR valve and an opening of a guide vane of a variable nozzle turbine while improving avoidance of control interference and controllability by making the openings cooperate with each other, obtaining a feedback gain corresponding to nonlinearity accompanying change in an operation condition by mathematical processing, and remarkably reducing man hours for adaptation in an optimum servo control. <P>SOLUTION: Control of the internal combustion engine 10 for controlling the valve opening Vegr of the EGR valve 22 and the opening Vvnt of the guide vane of the variable nozzle turbine 13a by inputting detection values Vm, Pm of an air flow rate V and an intake pressure P is controlled by a two-input/two-output integrating optimum servo system, and a state feedback gain K<SB>F</SB>(h) and an integrated gain K<SB>I</SB>(h) of the integrating optimum servo system are changed corresponding to the operation condition h of the internal combustion engine 10. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
