Title:
内燃機関の空燃比制御装置
Document Type and Number:
Japanese Patent JP4228900
Kind Code:
B2
Abstract:
An air-fuel ratio control apparatus of an internal combustion engine includes: an exhaust gas purifying catalyst disposed in an exhaust passage of the internal combustion engine; fuel cutting means for cutting fuel to be supplied to the internal combustion engine at the time of deceleration of the internal combustion engine; and catalyst degradation suppressing means for suppressing degradation of the exhaust gas purifying catalyst by prohibiting operation of the fuel cutting means when it is determined that the degradation of the exhaust gas purifying catalyst advances, wherein the catalyst degradation suppressing means sets an operation permitting period, during which the operation of the fuel cutting means is permitted after completion of a fuel quantity increasing operation of the internal combustion engine.
More Like This:
Inventors:
Mamoru Yoshioka
Application Number:
JP2003407449A
Publication Date:
February 25, 2009
Filing Date:
December 05, 2003
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F01N3/20; F02D41/12; F01N3/00; F01N3/22; F01N3/24; F01N3/28; F02D41/04; F02D41/14; F01N3/30
Domestic Patent References:
| JP2000120428A | ||||
| JP2003343322A | ||||
| JP2002371836A | ||||
| JP2000087736A |
Attorney, Agent or Firm:
Koji Yamamoto