AMMONIA ABATEMENT SYSTEM FOR EXHAUST SYSTEMS
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Sep 24, 2015
app pub date -
Jun 28, 2012
filing date -
Jun 28, 2012
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An ammonia abatement system and method for an exhaust system that includes a threeway catalytic converter (TWC) and a diesel particulate filter (DPF). Exhaust gas entering the TWC above the stoichiometric point (>1) may result in the formation of elevated levels of ammonia in the exhaust gas. To prevent the increased quantities of ammonia from skipping through the DPF, the DPF includes a catalyst to oxidize some of the ammonia and an acidic material to adsorb and store at least a portion of the excess ammonia. The acidic material may also release at least some of the adsorbed ammonia when a lean exhaust gas is present in the DPF. Additionally, an additive, such as copper or iron, may be added to the acidic material that may convert some of the NOx in the lean exhaust gas into nitrogen gas (or nitrous oxide) and water.
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