Engine aftertreatment system
US-11905873-B1 · Feb 20, 2024 · US
Method for operating an internal combustion engine, and internal combustion engine
US9518486B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9518486-B2 |
| Application number | US-201314431184-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 16, 2013 |
| Priority date | Sep 26, 2012 |
| Publication date | Dec 13, 2016 |
| Grant date | Dec 13, 2016 |
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Abstract
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A method for operating an internal combustion engine involves using an injection valve to post-inject fuel into at least one cylinder of the internal combustion engine in order to help regenerate a particulate filter that is arranged in an exhaust system of the internal combustion engine, downstream of an oxidation catalyst. A closing moment of a discharge valve of a cylinder of the internal combustion engine is advanced when the temperature of the oxidation catalyst is in a first temperature range, and the post-injections are performed when the temperature of the oxidation catalyst is in a second temperature range, an upper limit of the first temperature range having a lower value that an upper limit of the second temperature range.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for operating an internal combustion engine, the method comprising: post-injecting fuel, by an injector in at least one cylinder of the internal combustion engine, to assist in regeneration of a particle filter situated in an exhaust gas tract of the internal combustion engine and downstream from an oxidation catalytic converter; controlling an advance of a closing time of an exhaust valve of a cylinder of the internal combustion engine in s…
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Mechanical Engineering · mapped topic
Cross-Sectional Technologies · mapped topic
Cross-Sectional Technologies · 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 US9518486B2 cover?
- A method for operating an internal combustion engine involves using an injection valve to post-inject fuel into at least one cylinder of the internal combustion engine in order to help regenerate a particulate filter that is arranged in an exhaust system of the internal combustion engine, downstream of an oxidation catalyst. A closing moment of a discharge valve of a cylinder of the internal co…
- Who is the assignee on this patent?
- Daimler Ag
- What technology area does this patent fall under?
- Primary CPC classification F01N3/025. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Dec 13 2016 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).