Title:
内燃機関の空燃比制御装置
Document Type and Number:
Japanese Patent JP4697175
Kind Code:
B2
Abstract:
To early provide an asymmetric correction effect by preventing a delay in completing a sub-feedback learning, in an air-fuel ratio control device of an internal combustion engine.
Up to completing the sub-feedback learning, rich time proportional term gain and lean time proportional term gain are set in an equal size, and rich time integral gain and lean time integral gain are also set in an equal size. After completing the sub-feedback learning, when approaching the rich, the rich time proportional term gain is set smaller than the lean time proportional term gain, and the rich time integral grain is also set smaller than the lean time integral gain.
COPYRIGHT: (C)2009,JPO&INPIT
Inventors:
Tokuhisa Nakagawa
Shogo Suda
Shogo Suda
Application Number:
JP2007104181A
Publication Date:
June 08, 2011
Filing Date:
April 11, 2007
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F02D41/14; F01N3/24
Domestic Patent References:
| JP200663949A | ||||
| JP2006104978A | ||||
| JP200548711A | ||||
| JP2002276432A |
Attorney, Agent or Firm:
Hideki Takahashi
Mamoru Takada
Hidekazu Onishi
Mamoru Takada
Hidekazu Onishi