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Method and device for detecting the blocking of a bleed valve of a gasoline vapor filter
US8972096B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8972096-B2 |
| Application number | US-201113636862-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 22, 2011 |
| Priority date | Mar 24, 2010 |
| Publication date | Mar 3, 2015 |
| Grant date | Mar 3, 2015 |
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Abstract
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A method and device for detecting the blocking of a bleed valve ( 4 ) of a gasoline vapor filter ( 3 ) for a vehicle internal combustion engine ( 1 ), the method includes a step of controlling the maintenance of the internal combustion engine at a constant non-idle speed during a start or pre-stop phase, and at least one sequence of the following steps when maintaining the constant speed of the internal combustion engine: a step of changing the state of the bleed valve ( 4 ), a step of measuring at least one operating parameter of the internal combustion engine associated with the mixture fed into the engine, a step of comparing the values of the parameter measured before and after the change of state of the bleed valve and of determining if the variation of the parameter is greater than a pre-determined threshold.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for detecting blocking of a bleed valve ( 4 ) of a gasoline vapor filter ( 3 ) for a vehicle internal combustion engine ( 1 ), the method comprising: an electronic control unit ( 10 ) controlling maintenance of the internal combustion engine ( 1 ) at a constant non-idle speed, during a start or pre-stop phase; and at least one sequence of the following steps when maintaining the constant speed of the internal combustion engine ( 1 ): chang…
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Mechanical Engineering · mapped topic
- F02M25/0827Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US8972096B2 cover?
- A method and device for detecting the blocking of a bleed valve ( 4 ) of a gasoline vapor filter ( 3 ) for a vehicle internal combustion engine ( 1 ), the method includes a step of controlling the maintenance of the internal combustion engine at a constant non-idle speed during a start or pre-stop phase, and at least one sequence of the following steps when maintaining the constant speed of the…
- Who is the assignee on this patent?
- Collet Thierry, Continental Automotive France, Continental Automotive Gmbh
- What technology area does this patent fall under?
- Primary CPC classification F02M25/0827. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Mar 03 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).