| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_41ac7ff6ab574ca3737b892da2ebfe6f |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02T10-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F01N2410-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F01N2370-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F01N2510-06 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F01N3-2803
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F01N13-011
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F01N3-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F01N13-0097
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F01N3-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F01N3-2053 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F01N13-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F01N13-04 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F01N3-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F01N3-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F01N3-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F01N3-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F01N3-20 |
| filingDate |
1991-05-27^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1994-03-08^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a5c274deb79f3bb7c7fed3eaaf70e7b9
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_63208176a44a7c259e1b4f92f71d94cf
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f574dbe069827bc18bbc9491dde71a2d |
| publicationDate |
1994-03-08^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2043295-C |
| titleOfInvention |
Exhaust gas purification system for an internal combustion engine |
| abstract |
ABSTRACT OF THE DISCLOSURE An exhaust gas purification system for an internal combustion engine includes a dual passage portion having a first passage and a second passage which are connected in parallel to each other. In the first passage, a first catalyst constructed of lean NOx catalyst is located and further a second catalyst constructed of oxidizing catalyst or three-way catalyst is located downstream of the first catalyst. In the second passage, a third catalyst constructed of oxidizing or three-way catalyst is located. A flow switching valve is provided so as to switch the flow of exhaust gas between the first passage and the second passage. The flow switching valve is switched so that exhaust gas flows through the third catalyst when the engine is being warmed-up and flows through the first catalyst and the second catalyst after the engine has been warmed-up. |
| priorityDate |
1990-05-28^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |