| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a turbocharger drive control method which executes stable supercharging pressure control even under a transient condition of vehicle travel or a special weather environment while securing stability of former supercharging pressure control under a normal travel condition. <P>SOLUTION: In feed back control based on PID control keeping actual boost pressure at target boost pressure determined according to an operation condition of an engine (S202), if differential pressure of the target boost pressure and the actual boost pressure becomes a predetermined value or greater (S214) and differential pressure of the actual boost pressure and target pressure in previous process is in a predetermined range (S218), integration of I term in PID control is stopped (s220) for an integration stop period determined based on at least one of a gear ratio and ambient pressure, and previous integration value of I term is retained. Appropriate turbo pressure control in transient change of travel condition is thereby provided. <P>COPYRIGHT: (C)2008,JPO&INPIT |
