초록 ▼

An engine with a charger, in which an intake passage is provided with a throttle valve which is electronically controlled to a target opening degree and the charger on the upstream side of the throttle valve, wherein a target supercharged pressure is corrected in a direction of eliminating a delay i

An engine with a charger, in which an intake passage is provided with a throttle valve which is electronically controlled to a target opening degree and the charger on the upstream side of the throttle valve, wherein a target supercharged pressure is corrected in a direction of eliminating a delay in the intake air amount based upon a difference between the target supercharged pressure of the charger and the supercharged pressure detected on the upstream side of the throttle valve, to thereby set a target supercharged pressure of the throttle valve based on the corrected target supercharged pressure. This suppresses a delay in the intake air amount caused by a delay in the change of the supercharged pressure during the transient period, makes it possible to accomplish acceleration/deceleration performance of good response, and suppresses a torque difference that occurs when the combustion system is changed over to the stratified charge combustion or to the homogeneous combustion.

대표청구항 ▼

[ What is claimed is:] [1.]1. An intake air control device of an engine with a charger, in which a throttle valve of which opening degree is electronically controlled to a target opening degree and the charger on the upstream side of said throttle valve are installed in an intake passage of the engi

[ What is claimed is:] [1.]1. An intake air control device of an engine with a charger, in which a throttle valve of which opening degree is electronically controlled to a target opening degree and the charger on the upstream side of said throttle valve are installed in an intake passage of the engine; comprising:a target supercharged pressure setting means for setting a target supercharged pressure of said charger;a supercharged pressure detecting means for detecting a supercharged pressure on the upstream side of the throttle valve;a target supercharged pressure correction means for correcting the target supercharged pressure in a direction of eliminating a delay in an intake air amount based upon a difference between said target supercharged pressure that has been set and the real supercharged pressure that is detected; anda target opening degree setting means for setting a target opening degree of said electronically controlled throttle valve based on the corrected target supercharged pressure.