Method and apparatus for estimating nitrogen oxides out of an engine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 9, 2018
Issued Date -
N/A
app pub date -
Oct 3, 2014
filing date -
Oct 3, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A system is provided and includes a fuel module that, based on a crankshaft angle of an engine, generates a value indicative of an amount of fuel burned in a cylinder or a change in the amount of fuel burned. A heat release module, based on the value, determines an amount of heat released during a combustion event of the cylinder. A pressure module, based on the amount of heat released, estimates a pressure in the cylinder. A temperature module, based on the pressure, estimates a temperature in the cylinder. A concentration module, based on the pressure or the temperature, estimates nitrogen oxide concentration levels in the cylinder. An output module, based on the nitrogen oxide concentration levels, estimates an amount of nitrogen oxides. A control module, based on the amount of nitrogen oxides out of the cylinder, controls operation of the engine or an exhaust system.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2014 Application Filing Year
- F02P Class
- 256 Applications Filed
- 210 Patents Issued To-Date
- 82.04 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F02P Class
- 0 % this patent is cited more than
- 7 Age
Maintenance Fees
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| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jul 9, 2025 |
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