Ignition apparatus
US-9995267-B2 · Jun 12, 2018 · US
Ignition device for internal combustion engine
US10619617B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10619617-B2 |
| Application number | US-201815893175-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 9, 2018 |
| Priority date | Feb 21, 2017 |
| Publication date | Apr 14, 2020 |
| Grant date | Apr 14, 2020 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
An ignition device for an internal combustion engine with an ignition plug that ignites an air-fuel mixture in a combustion chamber, wherein a discharge current i provided by the ignition plug to the air-fuel mixture is controlled to be greater than a discharge current reference value ibf, which is a minimum current value at which a spark discharge blow-out phenomenon does not arise.
First claim
Opening claim text (preview).
The invention claimed is: 1. An ignition device for an internal combustion engine equipped with an ignition plug that ignites an air-fuel mixture in a combustion chamber, wherein: a discharge current i provided by the ignition plug to the air-fuel mixture is controlled to be greater than a discharge current reference value i bf , which is a minimum current value at which a spark discharge blow-out phenomenon does not arise; and the discharge current reference value i bf is set according to the following mathematical formula: i bf =kU n1 l spk n2 , wherein: l spk is discharge path length; k, n 1 and n 2 are constants; and U is inter-electrode flow velocity. 2. The ignition device for an internal combustion engine according to claim 1 , wherein k is a constant that is adjustable within a range of 0.0017±10%, n 1 is a constant that is adjustable within a range of 0.71±10%, and n 2 is a constant that is adjustable within a range of 0.33±10%.
Assignees
Inventors
Classifications
- F02P17/12Primary
Testing characteristics of the spark, ignition voltage or current (testing of sparking plugs H01T13/60) · CPC title
with positive ignition (engines with non-timed positive ignition, and with incandescent chambers F02B9/08) · CPC title
Ignition, e.g. for IC engines · CPC title
by measuring spark voltage · CPC title
by supplementary electrical discharge in the pre-ionised electrode interspace of the sparking plug, e.g. plasma jet ignition · CPC title
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Frequently asked questions
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- What does patent US10619617B2 cover?
- An ignition device for an internal combustion engine with an ignition plug that ignites an air-fuel mixture in a combustion chamber, wherein a discharge current i provided by the ignition plug to the air-fuel mixture is controlled to be greater than a discharge current reference value ibf, which is a minimum current value at which a spark discharge blow-out phenomenon does not arise.
- Who is the assignee on this patent?
- Toyota Chuo Kenkyusho Kk, Denso Corp
- What technology area does this patent fall under?
- Primary CPC classification F02P17/12. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Apr 14 2020 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).