| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a control device of a multi-cylinder internal combustion engine which suitably suppresses deterioration in exhaust property. <P>SOLUTION: The internal combustion engine includes an exhaust gas recirculation (EGR) system having an EGR passage and an EGR valve, and a fuel injection valve provided in each cylinder. The valve opening control of the EGR valve is performed based on a target EGR rate Tegr established based on an engine operation state and the operation control of each fuel injection valve is performed based on a target fuel injection amount Tg which is common to each cylinder and is established based on the engine operation state. A pressure sensor detecting the fuel pressure inside the fuel injection valve is provided in each of the cylinder. The injection amount RQ after correction is calculated for each cylinder based on the fluctuation state of the fuel pressure detected by the pressure sensor (S303, S304) and an EGR map used for the establishment of the target EGR rate Tegr is corrected based on the injection amount RQ after correction and the target fuel injection amount Tg (S305). <P>COPYRIGHT: (C)2012,JPO&INPIT |
