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Method and system for pre-ignition control
US9038596B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9038596-B2 |
| Application number | US-201113310437-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 2, 2011 |
| Priority date | Dec 2, 2011 |
| Publication date | May 26, 2015 |
| Grant date | May 26, 2015 |
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Abstract
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Methods and systems are provided for addressing pre-ignition that may be induced in response to actions taken to mitigate a cylinder misfire. An amount of engine load limiting applied may be adjusted to reduce the likelihood pre-ignition while also addressing component over-temperature issues. By limiting an engine load while shutting off fuel in a misfiring cylinder, and while combusting a lean air-fuel mixture in the remaining cylinders, pre-ignition induced by the misfire-mitigating lean combustion conditions can be reduced.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of controlling an engine for preventing pre-ignition, comprising: operating a cylinder to pump air without injected fuel while another cylinder combusts a lean air-fuel mixture; and limiting an amount of intake air charge directed into the cylinders to be less than a threshold, the limiting increased as a degree of leanness of the air-fuel mixture increases. 2. The method of claim 1 , wherein the limiting is based on engine…
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Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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- What does patent US9038596B2 cover?
- Methods and systems are provided for addressing pre-ignition that may be induced in response to actions taken to mitigate a cylinder misfire. An amount of engine load limiting applied may be adjusted to reduce the likelihood pre-ignition while also addressing component over-temperature issues. By limiting an engine load while shutting off fuel in a misfiring cylinder, and while combusting a lea…
- Who is the assignee on this patent?
- Glugla Chris Paul, Mingo Paul Charles, Baskins Robert Sarow, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification F02D41/0087. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue May 26 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).