| 摘要 |
<p>PURPOSE:To provide constantly excellent control responsiveness even when an integrating item is arranged as a constituting element for a feedback control amount, in an engine with a supercharger formed in such a way that feedback control is made on a supercharging pressure under specific conditions. CONSTITUTION:By performing duty control of a control pressure fed to an actuator 14 coupled to a waste gate valve 12 to regulate a supercharging pressure by using a duty solenoid valve 15, the opening of the waste gate 15 is regulated. In which case, when a target supercharging pressure being deviated from the operation range of the waste gate valve 15 is set, a value obtained by subtracting a base duty value and a voltage correction duty value from, for example, a duty upper limit value is compared with 0, one, being larger, of the two values, whichever it may be, is selected as a final feedback duty value.</p> |
