Reverse flow hydrocarbon trap
US-2015369100-A1 · Dec 24, 2015 · US
Method for monitoring a pressure sensor in a delivery and metering system for a reactant of a catalytic converter
US9617885B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9617885-B2 |
| Application number | US-201313972216-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 21, 2013 |
| Priority date | Aug 23, 2012 |
| Publication date | Apr 11, 2017 |
| Grant date | Apr 11, 2017 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A method is made available for monitoring a pressure sensor ( 18 ) in a pressure-controlled delivery and metering system for a liquid reactant of a catalytic converter, in particular of an SCR catalytic converter. The delivery and metering system is provided for delivering the reactant from a tank ( 10 ) and for metering the reactant via a pressure line ( 16 ) and a metering module ( 19 ). In order to monitor the pressure sensor ( 18 ) which is located in the pressure line ( 16 ), a flow rate measurement is carried out in the pressure line ( 16 ) and/or in a return path ( 17 ) taking into account the relationship between the pressure p and the corresponding flow rate v.
First claim
Opening claim text (preview).
The invention claimed is: 1. A pressure-controlled delivery and metering system for a reactant of a catalytic converter, the system comprising: a catalytic converter reactant delivery path; a catalytic converter reactant delivery pump ( 11 ) positioned in the catalytic converter reactant delivery path; a pressure sensor ( 18 ) configured to monitor a pressure of the catalytic converter reactant in the reactant delivery path; and at least one flow sensor ( 101 , 102 , 103 , 104 ) configured to monitor the pressure sensor ( 18 ) using at least one flow rate measurement of the catalytic converter reactant. 2. The pressure-controlled delivery and metering system according to claim 1 , wherein the at least one flow sensor ( 101 , 102 , 103 , 104 ) is in a pressure line ( 16 ). 3. The pressure-controlled delivery and metering system according to claim 1 , wherein the at least one flow sensor ( 101 , 102 , 103 , 104 ) is in a return path ( 17 ). 4. The pressure-controlled delivery and metering system according to claim 1 , wherein the at least one flow sensor ( 101 , 102 , 103 , 104 ) is in a pressure line ( 16 ) and in a return path ( 17 ). 5. The pressure-controlled delivery and metering system according to claim 1 , wherein the catalytic converter is an SCR catalytic converter. 6. The pressure-controlled delivery and metering system according to claim 1 , further comprising a return path ( 17 ) with a return pump ( 22 ). 7. The pressure-controlled delivery and metering system according to claim 1 , further comprising a restrictor ( 20 ), a pressure line ( 16 ), a pressure sensor ( 18 ) and a metering module ( 19 ).
Assignees
Inventors
Classifications
Systems for adding substances into exhaust · CPC title
Flow rate · CPC title
- F01N3/10Primary
by thermal or catalytic conversion of noxious components of exhaust · CPC title
Pressure · CPC title
Engine management systems · CPC title
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- What does patent US9617885B2 cover?
- A method is made available for monitoring a pressure sensor ( 18 ) in a pressure-controlled delivery and metering system for a liquid reactant of a catalytic converter, in particular of an SCR catalytic converter. The delivery and metering system is provided for delivering the reactant from a tank ( 10 ) and for metering the reactant via a pressure line ( 16 ) and a metering module ( 19 ). In o…
- Who is the assignee on this patent?
- Bosch Gmbh Robert
- What technology area does this patent fall under?
- Primary CPC classification F01N3/10. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Apr 11 2017 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).