Exhaust gas aftertreatment mixer
US-12163456-B2 · Dec 10, 2024 · US
Device for supplying a reducing agent to an exhaust-gas aftertreatment system
US9133751B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9133751-B2 |
| Application number | US-201113991397-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 21, 2011 |
| Priority date | Dec 2, 2010 |
| Publication date | Sep 15, 2015 |
| Grant date | Sep 15, 2015 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The invention relates to a device ( 10 ) for supplying to an exhaust-gas aftertreatment system a reducing agent ( 42 ), in particular a urea-water solution for the reduction of nitrogen oxides in the exhaust-gas flow of a diesel engine, having a tank ( 40 ) for the reducing agent ( 42 ) and having a delivery module ( 14 ) for delivering the reducing agent ( 42 ) out of the tank ( 40 ) via an in particular electrically heatable suction line ( 16 ). According to the invention, a) the suction line ( 16 ) which runs outside the tank ( 40 ) is connected to a pump sump ( 12 ) situated in the region of the tank base ( 44 ), b) an in particular electrically operated pump sump heater ( 30 ) is arranged in the region of the pump sump ( 12 ), c) at least one in particular electrically operated heating rod ( 36 ) extends into the tank ( 40 ), and d) at least one fill level sensor ( 18 ) runs outside the tank ( 40 ). The pump sump heater ( 30 ), the heated suction line ( 16 ), the heating rod ( 36 ) and an optional elastic compensating element ( 26 ) in the region of the pump sump ( 12 ) permit a substantially temperature-independent supply of the reducing agent ( 42 ) to an exhaust-gas aftertreatment system of a diesel engine. The pump sump ( 12 ) which is mounted on the bottom of the tank ( 40 ) furthermore makes it possible for the reducing agent ( 42 ), which must be available in the exact dose for correct execution of the SCR method, to be supplied virtually completely independent of position, and nevertheless uniformly, to the exhaust-gas aftertreatment system.
First claim
Opening claim text (preview).
What is claimed is: 1. A device ( 10 ) for supplying a reducing agent ( 42 ) to an exhaust-gas aftertreatment system, having a tank ( 40 ) for the reducing agent ( 42 ) and having a delivery module ( 14 ) for conveying the reducing agent ( 42 ) out of the tank ( 40 ) via a suctioning line ( 16 ), characterized in that a) the suctioning line ( 16 ), which is disposed at least partially outside the tank ( 40 ), is connected to a pump sump ( 12 ) situated in the region of a tank base…
Assignees
Inventors
Classifications
Mechanical Engineering · mapped topic
- F01N3/2066Primary
Mechanical Engineering · mapped topic
Cross-Sectional Technologies · mapped topic
Mechanical Engineering · mapped topic
- F01N3/208Primary
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US9133751B2 cover?
- The invention relates to a device ( 10 ) for supplying to an exhaust-gas aftertreatment system a reducing agent ( 42 ), in particular a urea-water solution for the reduction of nitrogen oxides in the exhaust-gas flow of a diesel engine, having a tank ( 40 ) for the reducing agent ( 42 ) and having a delivery module ( 14 ) for delivering the reducing agent ( 42 ) out of the tank ( 40 ) via an in…
- Who is the assignee on this patent?
- Gottwald Frank, Bosch Gmbh Robert
- What technology area does this patent fall under?
- Primary CPC classification F01N3/2066. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Sep 15 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).