| 摘要 |
PROBLEM TO BE SOLVED: To provide an EGR valve control device capable of suppressing increase in NOx amount accompanied by increase in intake air and generation of black smoke accompanied by increase in EGR gas. ! SOLUTION: A control device 30 feed-back controls an opening of an EGR valve 24 on the basis of a proportional term calculated from a deviation between a target air amount and an actual intake air amount. The control device 30 includes: a target air amount calculating section 44 for calculating the target air amount on the basis of an engine speed and an accelerator opening; a target injection amount selecting section 42 for selecting a smaller fuel injection amount of a basic injection amount which is a fuel injection amount based on the engine speed and the accelerator opening and a smoke limitation injection amount which is a fuel injection amount of a black smoke limitation to the actual intake air amount as a target injection amount; and a correction value calculating section 47 for calculati |
