| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f1192a135e4bc40a5f201a9646f20172 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-63
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-9431 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-94
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-63 |
| filingDate |
2000-06-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2001-08-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4c2e2e0143803f11be0ea10ddeef277a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fc19d9cd24e1b334100b00f6e9e819a6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cf550a3f60b4e37d89f7d508b231a378 |
| publicationDate |
2001-08-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-6276132-B1 |
| titleOfInvention |
Exhaust gas purifying system |
| abstract |
An exhaust gas purifying system for an internal combustion engine of an automotive vehicle. The exhaust gas purifying system comprises an exhaust gas composition regulating device for producing a low HC concentration reducing agent in a lean exhaust gas atmosphere where air-fuel ratio is leaner than a stoichiometric value. The exhaust gas composition regulating device is disposed in an exhaust gas passageway of the engine. The low HC concentration reducing agent is low in concentration of hydrocarbons to have an exhaust gas composition having a volume ratio of NOx/HC not less than 50 in the exhaust gas passageway immediately downstream of the exhaust gas composition regulating device. Additionally, a NOx treating catalyst is disposed in the exhaust gas passageway and located downstream of the exhaust gas composition regulating device. The NOx treating catalyst is arranged to reduce NOx in the presence of the low HC concentration reducing agent supplied from the exhaust gas composition regulating device. The exhaust gas composition of the low HC concentration reducing agent is obtained in the exhaust gas passageway immediately upstream of the NOx reducing catalyst. |
| isCitedBy |
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| priorityDate |
1999-07-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |