Title:
EXHAUST EMISSION CONTROL SYSTEM
Document Type and Number:
Japanese Patent JP3962892
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To easily allow precise and sure determination of deterioration all the time, even in a catalytic converter low in oxygen storage ability.
SOLUTION: In the deterioration determination for the catalytic converter, a means for varying forcibly an air-fuel ratio modulates an air-fuel ratio (S10) to make an average oxygen storage amount occluded in the catalytic converter in a lean air-fuel ratio and released from the catalytic converter in a rich air- fuel ratio less than a break-through amount in a non-deteriorated condition of the ctalytic converter and more than a break-through amount in a deteriorated condition of the converter.
Inventors:
Yasuki Tamura
Takuya Okamoto
Takuya Okamoto
Application Number:
JP2000326682A
Publication Date:
August 22, 2007
Filing Date:
October 26, 2000
Export Citation:
Assignee:
MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
International Classes:
F02D41/14; F02D45/00; F01N3/20; F01N3/24; F02D41/04; (IPC1-7): F02D41/14; F01N3/20; F01N3/24; F02D41/04; F02D45/00
Domestic Patent References:
| JP7259602A | ||||
| JP8338231A | ||||
| JP5312025A |
Attorney, Agent or Firm:
Koji Nagato