Patent ID: 9689348
Date: 2017-06-27
CPC Classifications: F02B,F02D,F02M,Y02T

Claim:
1. A control apparatus for an internal combustion engine which comprises an exhaust gas recirculation device and a supercharger equipped with a variable flow rate mechanism, wherein the control apparatus is configured to be a 2-input, 2-output integral-type optimal servo system which uses an intake air amount and an intake oxygen concentration as a controlled variable and an opening of a control valve of the exhaust gas recirculation device and an opening of a control valve of the supercharger with the variable flow rate mechanism as a manipulated variable, the control apparatus including an output feedback system for feedback of the controlled variable from the internal combustion engine, wherein the control apparatus comprises: an EGR valve opening controller for controlling the opening of the control valve of the exhaust gas recirculation device; and a variable flow valve opening controller for controlling the opening of the control valve of the supercharger with the variable flow rate mechanism, wherein each of the EGR valve opening controller and the variable flow valve opening controller comprises a non-interference controller for non-interference between the controlled variable controlled by the manipulated variable of the control valve of the exhaust gas recirculation device and the controlled variable controlled by the manipulated variable of the control valve of the supercharger with the variable flow rate mechanism with respect to each other, wherein the non-interference controller is configured to multiply a difference value between an output feedback signal of the controlled variable from the internal combustion engine and a target value of the controlled variable, or a calculated value based on the difference value by a non-interference gain, wherein the non-interference gain includes a plurality of components, and wherein each component of the non-interference gain includes: