Title:
車両用制御装置
Document Type and Number:
Japanese Patent JP4174821
Kind Code:
B2
Abstract:
In an air-fuel ratio control system, a gain Kh is adaptively determined on the basis of a value z obtained by multiplying a target fuel amount difference value Deltaym (derivative value of a target fuel amount) by an error e between a target excess fuel ratio (target phi) and an actual excess fuel ratio (actual phi) detected by an air-fuel ratio sensor. A value obtained by multiplying the target fuel amount difference value Deltaym by the gain Kh is determined as an F/F corrected value ucmp. In this case, when the error e between the target phi and the actual phi is determined in consideration of the fact that a controlled system has dead time d, a target phid at the point in time going back in the past by the amount of the dead time d is used to obtain error e=target phid-actual phi.
Inventors:
Katsuhiko Kawai
Application Number:
JP2003079368A
Publication Date:
November 05, 2008
Filing Date:
March 24, 2003
Export Citation:
Assignee:
株式会社デンソー
International Classes:
F02D41/04; F02D41/10; F02D11/10; F02D41/14; G06F7/00
Domestic Patent References:
| JP2000073830A | ||||
| JP9096236A | ||||
| JP1160718A | ||||
| JP3040008A |
Attorney, Agent or Firm:
Muneo Kako