Reducing agent tank and work vehicle
US-2015377112-A1 · Dec 31, 2015 · US
Supplemental ammonia storage and delivery system
US8940260B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8940260-B2 |
| Application number | US-201214125191-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 18, 2012 |
| Priority date | Jun 10, 2011 |
| Publication date | Jan 27, 2015 |
| Grant date | Jan 27, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
An exhaust after-treatment system is described. Generally speaking, the system includes separate primary and secondary NO x reducing systems for delivering reductant (e.g. urea and ammonia) to an exhaust stream, a sensor system for determining relevant operating conditions and an electronic control module for activating the reducing systems. The two NO x reducing systems include flow control modules coupled to the electronic control module. Methods for reducing NO x in an exhaust stream are also described. Generally speaking, the methods include the steps of determining a need for NO x reduction in an exhaust stream, determining temperature of exhaust stream, and injecting at least one of a primary reductant and a secondary reductant into the exhaust stream based on the determined temperature of the exhaust stream. Typically, the primary reductant comprises urea and the secondary reductant comprises ammonia.
First claim
Opening claim text (preview).
What is claimed is: 1. An exhaust after-treatment system comprising: a primary NOx reducing system for delivering a reductant to an exhaust stream, the primary system having a primary flow control module; a secondary NOx reducing system for delivering a reductant to an exhaust stream, the secondary system having a secondary flow control module; the reductant in the primary NOx reducing system being different than the reductant in the secondary NOx reducing system; a sensor s…
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Classifications
- B01D53/90Primary
Operations & Transport · mapped topic
Mechanical Engineering · mapped topic
Operations & Transport · mapped topic
Mechanical Engineering · mapped topic
Cross-Sectional Technologies · mapped topic
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Frequently asked questions
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- What does patent US8940260B2 cover?
- An exhaust after-treatment system is described. Generally speaking, the system includes separate primary and secondary NO x reducing systems for delivering reductant (e.g. urea and ammonia) to an exhaust stream, a sensor system for determining relevant operating conditions and an electronic control module for activating the reducing systems. The two NO x reducing systems include flow control …
- Who is the assignee on this patent?
- Derybowski Edward M, Adelman Brad J, Santhanam Shyam, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification B01D53/90. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jan 27 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).