Method for improved performance of an engine emission control system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 6, 2002
Grant Date -
N/A
app pub date -
Mar 17, 2000
filing date -
Mar 17, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An engine control system of an internal combustion engine coupled to a NOx trap uses a integrated difference between NOx exiting the trap and NOx entering the trap to determine NOx storage capacity. NOx exiting the trap is measured by a NOx sensor downstream of the trap. NOx entering the trap is determined based on engine operating conditions. The values are integrated until the ratio of NOx exiting to NOx entering reaches a predetermined threshold.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully