Method of detecting nitrogen compounds contained in exhaust gases, notably of internal-combustion engines
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 11, 2015
Grant Date -
Jan 23, 2014
app pub date -
Jul 12, 2013
filing date -
Jul 12, 2013
priority date (Note) -
Withdrawn
status (Latency Note)
Importance
|
US Family Size
|
Non-US Coverage
|
|
Patent Longevity
|
Forward Citations
|
Abstract
A method of detecting nitrogen compound emissions in exhaust gases treated with selective catalytic reduction achieved by injecting a reducing agent into the gases and by passing these gases through a catalyst include sending the signal collected by a gas detector arranged in the exhaust gas downstream from the catalyst and representative of the amount of NOx (NOxsonde) at the catalyst outlet to a computing unit, decomposing this signal into a value representative of the effective NOx amount (NOxréel) at the outlet of catalyst established by the SCR catalyst model, into a detector perturbation coefficient (k) and into a value representative of the ammonia amount (NH3réel) via an integrated model so as to obtain NOxsonde=NOxréel+k.NH3réel, evaluating coefficient (k) from this decomposition, and determining the presence of nitrogen compounds downstream from the catalyst when coefficient (k) is greater than or equal to 1.
First Claim
Other Claims data not available
Family
| Country | kind | publication No. | Filing Date | Type | Sub-Type |
|---|
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- G01M Class
- 0 % this patent is cited more than
- 10 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Feb 11, 2027 |