| 摘要 |
PURPOSE:To avoid response delay of control supercharging pressure to the target supercharging pressure at the time of acceleration in the low speed step and to prevent occurrence of overshoot of the control supercharging pressure to the target supercharging pressure at the time of acceleration in the high speed step. CONSTITUTION:The initial value of a duty ratio according to the target supercharging pressure obtained by a target supercharging pressure calculating means 60 is obtained by an initial duty ratio calculating means 61, and the initial value of the duty ratio obtained by the initial duty ratio calculating means 61 is corrected by a first duty ratio correcting means 62, whereby the control supercharging pressure is controlled to follow up the target supercharging pressure. According to the speed change ratio detected by the speed change ratio detecting means 56, the initial value of the duty ratio obtained by the initial duty ratio calculating means 61 is corrected by a second correcting means 64. |
