| 摘要 |
<p>PURPOSE:To control supercharging pressure stably and properly by starting feedback control in such a manner that the actual supercharging pressure comes to a target supercharging pressure in the lapse of a fixed time after the supercharging pressure exceeds a designated value when the supercharging pressure is in the transient state. CONSTITUTION:An air cleaner 6 is connected to an intake manifold 1 of an internal combustion engine E through an intake pipe 2, a throttle body 3, an inter cooler 4 and a variable-capacity turbo-charger 5. The turbo-charger 5 is driven by an actuator 60. A solenoid control valve 69 and a solenoid switch valve 72 respectively connected to the actuator 60 are respectively controlled according to a detection signal from a supercharging pressure sensor Sp 2 by control means C. In this case, when the supercharging pressure is in the transient state, feedback control is started in such a manner that the actual supercharging pressure comes to a target supercharging pressure in the lapse of a designated time after the supercharging pressure exceeds a designated value.</p> |
