http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2133572-C
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_92215dfcab5a960b619be872953d5c9b |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F02B1-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F01N2610-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F01N2610-1453 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02T10-12 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F01N3-2066 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F01N3-36 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F02B1-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F01N3-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F01N3-20 |
| filingDate | 1992-04-20^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2002-12-24^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6ea3ab8f69c1d48a158dee0c158b1da1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_222e5f391373505719ebd964f12fa58a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5437ebe4e3a7a1616bfffd6eb4e6e6ef http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dd7c2ee76d6250e3a30a3278229ab17e |
| publicationDate | 2002-12-24^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-2133572-C |
| titleOfInvention | Engine nox reduction system |
| abstract | A method and apparatus are provided for reducing pollutants and especially nitrogen oxides, or NOx, in the exhaust gases of an engine. The apparatus includes a device for injecting-ammonia into a conduit that extends between cylinder exhaust valves and a catalytic converter, to mix the ammonia with the exhaust gases. Ammonia injection occurs at a location a plurality of inches downstream of the exhaust valves to avoid burning of the ammonia by flames. The injection preferably occurs at a location where the exhaust gases are at a temperature of at least about 1200 °F to cause considerable reaction of the ammonia with NOx in the exhaust gases prior to the gases reaching the catalyst, so less NOx must be removed along the catalyst. To minimize ammonia use, it is injected only for a limited period such as a minute after a cold engine is started when the catalyst is too cold to cause signifi-cant reactions, and during operation of the engine at high power levels when the greatest amounts of NOx are produced. |
| priorityDate | 1991-05-16^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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