Title:
APPARATUS AND METHOD OF DIAGNOSING FAULT OF OXIDATION CATALYST
Document Type and Number:
WIPO Patent Application WO/2013/180364
Kind Code:
A1
Abstract:
Disclosed is a method of diagnosing a fault of an oxidation catalyst The method of diagnosing a fault of an oxidation catalyst includes: (a) measuring a first continuous time of outputting a voltage signal corresponding to a stoichiometric air/fuel ratio in a sensor in a normal state of the oxidation catalyst; (b) measuring a second continuous time of outputting a voltage signal corresponding to a stoichiometric air/fuel ratio in the sensor in a driving state of a vehicle; (c) outputting a comparison value by comparing the first continuous time and the second continuous time; and (d) when the comparison value exceeds a predetermined range in step (c), providing a driver with a warning signal.
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| JPS53110713 | SECONDARY AIR FEEDER |
Inventors:
PARK CHEOL WOONG (KR)
KIM CHANG KI (KR)
LEE SUN YOUP (KR)
OH SEUNG MOOK (KR)
KIM TAE YOUNG (KR)
KIM CHANG KI (KR)
LEE SUN YOUP (KR)
OH SEUNG MOOK (KR)
KIM TAE YOUNG (KR)
Application Number:
PCT/KR2012/010759
Publication Date:
December 05, 2013
Filing Date:
December 11, 2012
Export Citation:
Assignee:
KOREA MACH & MATERIALS INST (KR)
International Classes:
F01N3/10; F01N3/20; F01N11/00
Foreign References:
| JP2004278457A | 2004-10-07 | |||
| JP2011085101A | 2011-04-28 | |||
| US20060201138A1 | 2006-09-14 | |||
| JPH08200128A | 1996-08-06 | |||
| JP2004308455A | 2004-11-04 |
Attorney, Agent or Firm:
PANKOREA PATENT AND LAW FIRM (823-16 Yeoksam-dong,,Gangnam-gu, Seoul 135-080, KR)
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