Title:
【発明の名称】内燃エンジンの空燃比制御方法
Document Type and Number:
Japanese Patent JP2759907
Kind Code:
B2
Abstract:
An air-fuel ratio control method for an internal combustion engine. The air-fuel ratio of an air-fuel mixture supplied to the engine is feedback-controlled to a desired air-fuel ratio dependent on operating conditions of the engine. When a transmission is being shifted or before a predetermined time period elapses after the shifting, the desired air-fuel ratio is held at a value assumed immediately before the shifting of the transmission. In another form of the invention, when the transmission is being shifted, or when the operating characteristics of at least one set of a set of intake valves and a set of exhaust valves have been not changed before the predetermined time period elapses after the shifting of the transmission, the desired air-fuel ratio is held at a value assumed before the shifting of the transmission.
Inventors:
MYASHITA YUKIO
MIFUNE KOJI
NOGUCHI KUNIO
FUKUCHI HIRONAO
MIFUNE KOJI
NOGUCHI KUNIO
FUKUCHI HIRONAO
Application Number:
JP24672390A
Publication Date:
May 28, 1998
Filing Date:
September 17, 1990
Export Citation:
Assignee:
HONDA GIKEN KOGYO KK
International Classes:
F02D13/02; F02D29/00; F02D29/02; F02D35/00; F02D41/04; F02D43/00; F02D41/14; F16H59/34; F16H59/30; F16H59/44; F16H59/68; F16H59/74; F16H59/78; F16H61/00; (IPC1-7): F02D41/14; F02D13/02; F02D29/00; F02D41/04; F02D43/00
Domestic Patent References:
| JP59208141A | ||||
| JP63189641A | ||||
| JP61149541A | ||||
| JP6166843A | ||||
| JP374547A |
Attorney, Agent or Firm:
Toshihiko Watanabe