Title:
内燃機関の制御装置
Document Type and Number:
Japanese Patent JP5447685
Kind Code:
B2
Abstract:
An internal combustion engine executes EGR and controls the air-fuel ratio based on a detected oxygen concentration in the exhaust. An electronic control unit (20) controls the engine such that the detected value for the air-fuel ratio upstream from a front catalyst (14) provided in an exhaust pipe (3) reaches a value indicating a leaner air-fuel ratio when EGR is being executed than when not executed. Therefore, the controlled air-fuel ratio follows shifting of a window to the leaner side in response to execution of EGR, so that the air-fuel ratio is controlled more precisely in response to the execution of EGR.
Inventors:
Ikuo Ando
Takeshi Motoko
Yosuke Matsumoto
Takeshi Motoko
Yosuke Matsumoto
Application Number:
JP2012540559A
Publication Date:
March 19, 2014
Filing Date:
October 26, 2010
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F02D41/14; F02D41/02; F02D43/00; F02D45/00
Domestic Patent References:
| JP5302543A | ||||
| JP5302548A | ||||
| JP2008133744A | ||||
| JP8210164A | ||||
| JP2010071217A |
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda