Integrated ignition and electronic auto-choke module for an internal combustion engine
US-2016377009-A1 · Dec 29, 2016 · US
Control of A/F ratio at cut-out speed
US9255535B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9255535-B2 |
| Application number | US-201114001248-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 23, 2011 |
| Priority date | Feb 23, 2011 |
| Publication date | Feb 9, 2016 |
| Grant date | Feb 9, 2016 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The invention concerns a method for controlling at least one of a fuel supply and an air supply to an internal combustion engine ( 1 ), in a fuel supply section thereof, such that an A/F-ratio is adjusted automatically to a desired level. Moreover, the method is activated at a speed close to a cut-out speed threshold ( 52 ) where the engine speed will fluctuate around the threshold ( 52 ) and the method comprises the steps of: receiving engine speed data on rotational speed from the engine ( 1 ), briefly changing the A/F ratio, comparing engine speed data that are essentially unaffected by the brief change to engine speed data that are affected by the brief change to evaluate the impact on the engine speed fluctuation resulting from the brief change, adjusting the A/F ratio in the same direction as the brief change if the engine speed data affected by the brief change indicates an increase in acceleration after combustion/s, and adjusting the A/F ratio in the opposite direction to the brief change if the engine speed data affected by the brief change indicates a decrease in acceleration after combustion/s.
First claim
Opening claim text (preview).
The invention claimed is: 1. Method for controlling at least one of a fuel supply and an air supply to an internal combustion engine, in a fuel supply section thereof, such that an A/F-ratio is adjusted automatically to a desired level, the method comprising: receiving engine speed data on rotational speed from the engine, detecting when the engine speed exceeds a predetermined threshold close to a cut-out speed threshold when the engine runs at full throttle without any load,…
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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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Frequently asked questions
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- What does patent US9255535B2 cover?
- The invention concerns a method for controlling at least one of a fuel supply and an air supply to an internal combustion engine ( 1 ), in a fuel supply section thereof, such that an A/F-ratio is adjusted automatically to a desired level. Moreover, the method is activated at a speed close to a cut-out speed threshold ( 52 ) where the engine speed will fluctuate around the threshold ( 52 ) and t…
- Who is the assignee on this patent?
- Larsson Mikael, Husqvarna Ab
- What technology area does this patent fall under?
- Primary CPC classification F02D31/007. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Feb 09 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).