| 摘要 |
<P>PROBLEM TO BE SOLVED: To reliably control a charging pressure to a target charging pressure by controlling an EGR control valve aperture. <P>SOLUTION: A charging pressure control device for an internal combustion engine selectively carries out first control or second control. The first control decreases the EGR control valve aperture when a charging pressure should be increased while it increases the EGR control valve aperture when the charging pressure should be decreased, and the second control increases the EGR control valve aperture when the charging pressure should increase the charging pressure while it should decrease the charging pressure. A variation in the charging energy ¾ ΔEin ¾ attributed to a variation in an inhalation resistance, and a variation in the charging energy ¾ ΔEtb ¾ attributed to a variation in a turbine passage exhaust gas when the EGR control valve aperture is changed at the time of control of the charging pressure are compared. Depending on a result after the comparison, either the first or the second control is determined to carry out. <P>COPYRIGHT: (C)2012,JPO&INPIT |
