Title:
【発明の名称】内燃機関の空燃比制御方法
Document Type and Number:
Japanese Patent JPH0674765
Kind Code:
B2
Abstract:
In a method of controlling an air-fuel ratio for an internal combustion engine, a control section feedback-controls an electronically controlled carburetor in response to a signal from an O2 sensor which detects the concentration of O2 in the exhaust gas. When the O2 sensor outputs a rich signal for a predetermined time period after the air-fuel ratio is leaned upon deceleration of the engine, the rich air-fuel ratio is instantaneously and forcibly leaned by the control section in order to rapidly return it to a proper value. Thereafter, ordinary feedback control is resumed. With this method, the quantity of harmful exhaust gas components such as CO or the like can be reduced without making the operational performance of the engine deteriorate.
Inventors:
Suzuki Fuji
Nagata Kan
Nagata Kan
Application Number:
JP25309584A
Publication Date:
September 21, 1994
Filing Date:
November 30, 1984
Export Citation:
Assignee:
SUZUKI KABUSHIKI KAISHA
International Classes:
F02D41/00; F02D41/04; F02D41/12; F02D41/14; F02M7/12; F02M7/00; (IPC1-7): F02D41/14; F02D41/04; F02D41/12; F02M7/12
Domestic Patent References:
| JP58162750A | ||||
| JP5632052A | ||||
| JP5840009B2 | ||||
| JP586052B2 |
Attorney, Agent or Firm:
Yoshimi Saigo (1 person outside)
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