| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e6a8aeceb7689fc316cc186259cfec2d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_81f6028467f43465653c1b781b6e590b |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02T10-12 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F01N3-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F02D41-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F02D41-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F01N3-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-94
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F02D45-00 |
| filingDate |
2011-10-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3ecd37ece94658cdb3f8e0bcf52a49d6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e091f98da0d85a5f7225a2b66622e337
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_008195b4fa0b21893c6d1edac8f9e571 |
| publicationDate |
2013-05-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-2013083196-A |
| titleOfInvention |
Method for diagnosing catalyst deterioration under reduced speed running |
| abstract |
In a diagnosis of deterioration of a catalyst in an exhaust passage of an internal combustion engine, it is possible to diagnose a deterioration state of a catalyst at the time of traveling including a general road traveling at a medium / low speed without much cost increase. To do. An air-fuel ratio rich effect is produced after fuel cut control in a deceleration operation region, comprising an oxygen sensor for detecting an oxygen concentration in exhaust gas downstream of a three-way catalyst provided in an exhaust passage of an internal combustion engine. The amount of change in oxygen concentration over time at the time of spike is measured, the oxygen storage capacity of the catalyst is evaluated from the amount of change over time, and the oxygen storage capacity is used as a catalyst deterioration index to serve as a criterion for determining deterioration of the catalyst. The deterioration of the catalyst is diagnosed by comparing with a threshold value. [Selection] Figure 1 |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2016056753-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109958514-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11338793-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20180052335-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-101865743-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107208565-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112983610-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112983610-B |
| priorityDate |
2011-10-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |