Title:
【発明の名称】エンジンの空燃比制御装置
Document Type and Number:
Japanese Patent JP3377549
Kind Code:
B2
Abstract:
An air-fuel ratio control system, has an air-fuel ratio feedback control for feedback controlling an-air-fuel ratio of a mixture to be supplied into an engine based on a parameter detected from an exhaust gas discharged from the engine so as to set said air-fuel ratio to a target air-fuel ratio in an internal combustion engine. Vaporized fuel is supplied from a fuel tank to the engine. During an initial interval, the supply of vaporized fuel gradually increases. Learning an updating of a control value are accomplished in the feedback control based on a deviation of the air-fuel ratio from the target air-fuel ratio during supply of the vaporized fuel. Upon a resumption of supply of vaporized fuel, a learned value setting arrangement gradually changes the learned control value from zero (0) to a learned control value obtained during a preceding period of supply of vaporized fuel according to a gradually increasing amount of supply of vaporized fuel over a given interval.
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Inventors:
Hiroyuki Takebayashi
Application Number:
JP7271393A
Publication Date:
February 17, 2003
Filing Date:
March 31, 1993
Export Citation:
Assignee:
Mazda Corporation Inc
International Classes:
F02D41/00; F02D41/14; F02D45/00; F02M25/08; F02D41/02; (IPC1-7): F02D41/14; F02D41/02; F02D45/00; F02M25/08
Domestic Patent References:
| JP4279745A | ||||
| JP63255559A | ||||
| JP552134A | ||||
| JP610736A | ||||
| JP6229277A | ||||
| JP6200804A | ||||
| JP63152U |
Attorney, Agent or Firm:
Hiroshi Maeda (2 outside)