Title:
AIR-FUEL RATIO CONTROL METHOD OF INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP2001107760
Kind Code:
A
Abstract:
To prevent the worsening of a fuel consumption when an air-fuel ratio is controlled to a rich side in order to reduce a heat load and drop an exhaust temperature in a high load operation state, in an internal combustion engine using a gas fuel.
In an internal combustion engine using a gas fuel for controlling so as to be the actual air-fuel ratio in a normal operation state near a theoretical air-fuel ratio, the operation state of the internal combustion engine is detected and the actual air-fuel ratio is controlled so as to be shifted to a lean side, when the detected operation state is a high load operation state.
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Inventors:
FUJII KOJI
Application Number:
JP28604799A
Publication Date:
April 17, 2001
Filing Date:
October 06, 1999
Export Citation:
Assignee:
DAIHATSU MOTOR CO LTD
International Classes:
F02M21/02; F02D19/02; F02D41/02; F02D41/04; (IPC1-7): F02D19/02; F02M21/02
Attorney, Agent or Firm:
Kazuhiro Akazawa