Fuel injection control apparatus
US-2016377013-A1 · Dec 29, 2016 · US
Particulate matter retaining system
US9239019B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9239019-B2 |
| Application number | US-201213359143-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 26, 2012 |
| Priority date | Jan 26, 2012 |
| Publication date | Jan 19, 2016 |
| Grant date | Jan 19, 2016 |
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Abstract
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Methods and systems are provided for passive regeneration of a particulate matter filter coupled to a gasoline engine. During vehicle deceleration conditions, an engine is operated leaner than stoichiometry over two subsequent lean phases, including an initial longer and leaner phase followed by a shorter and less lean phase. By passively regenerating the filter using intermittent lean engine operation, engine performance can be improved.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method, comprising: during stoichiometric engine operation, flowing exhaust gas over a filter having a catalytic coating; and during selected conditions, operating at least one actuator via a controller to shift engine operation to leaner than stoichiometry lean operation including a first shorter and more lean phase followed by a second longer and less lean phase, the lean operation adjusted via the controller based on a catalyst oxygen content an…
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Cross-Sectional Technologies · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Cross-Sectional Technologies · mapped topic
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- What does patent US9239019B2 cover?
- Methods and systems are provided for passive regeneration of a particulate matter filter coupled to a gasoline engine. During vehicle deceleration conditions, an engine is operated leaner than stoichiometry over two subsequent lean phases, including an initial longer and leaner phase followed by a shorter and less lean phase. By passively regenerating the filter using intermittent lean engine o…
- Who is the assignee on this patent?
- Lambert Christine Kay, Twigg Martyn Vincent, Ford Global Tech Llc
- What technology area does this patent fall under?
- Primary CPC classification F02D19/0655. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jan 19 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).