Internal combustion engine component and producing method therefor
US-2018298792-A1 · Oct 18, 2018 · US
Poppet valve
US11767774B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11767774-B2 |
| Application number | US-201816759745-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 17, 2018 |
| Priority date | Oct 30, 2017 |
| Publication date | Sep 26, 2023 |
| Grant date | Sep 26, 2023 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A poppet valve includes: a valve body comprising a valve stem body, a valve head body with a valve combustion face, and a valve fillet body interconnecting the valve stem body and the valve head body. The valve fillet body surface has an increased thermal resistance compared to the valve combustion face.
First claim
Opening claim text (preview).
The invention claimed is: 1. A poppet valve, comprising: a valve body comprising a valve stem body, a valve head body with an uncoated valve combustion face provided on a first side of the valve head body, a cavity arranged in one or both of the valve stem body and the valve head body, and a valve fillet body interconnecting the valve stem body to a second side of the valve head body, the second side being opposite the first side, wherein an exterior surface of the valve fillet body has an increased thermal resistance compared to the valve combustion face, and wherein a thermal barrier coating is arranged on the valve fillet body to provide the increased thermal resistance, the thermal barrier coating comprising ferrite particles arranged by crystal growth, a silica based inorganic compound, spray painting of hollow ceramic balls, or a thermal spray of Yttria-stabilized zirconia. 2. The poppet valve according to claim 1 , wherein a bond coating is interposed between the thermal barrier coating and the valve fillet body. 3. The poppet valve according to claim 1 , wherein a coating thickness is between 0.1 mm and 0.6 mm. 4. The poppet valve according to claim 1 , wherein the valve combustion face is uncoated. 5. The poppet valve according to claim 1 , wherein the cavity is filled with a heat conducting material. 6. The poppet valve according to claim 5 , wherein the heat conducting material comprises sodium. 7. A method for manufacturing the poppet valve according to claim 1 , which method comprises the steps of: providing the poppet valve having the valve body comprising the valve stem body, the valve head body with the uncoated valve combustion face, the cavity arranged in one or both of the valve stem body and the valve head body, and the valve fillet body interconnecting the valve stem body and the valve head body; and using either atmospheric plasma spraying (APS) or high velocity oxygen fuel spraying (HVOF) to arrange a thermal barrier coating on at least part of the exterior surface of the valve fillet body. 8. The method according to claim 7 , wherein the poppet valve is rotated around a longitudinal axis thereof while the thermal barrier coating is arranged. 9. The method of claim 7 , further comprising filling the cavity with a heat conducting material. 10. The poppet valve according to claim 1 , wherein the uncoated valve combustion face is provided on an entirety of the first side of the valve head body.
Assignees
Inventors
Classifications
- F01L3/04Primary
Coated valve members or valve-seats · CPC title
poppet valves, e.g. for internal-combustion engines · CPC title
poppet valves · CPC title
Selective coating, e.g. pattern coating, without pre-treatment of the material to be coated · CPC title
Pretreatment of the material to be coated, e.g. for coating on selected surface areas · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11767774B2 cover?
- A poppet valve includes: a valve body comprising a valve stem body, a valve head body with a valve combustion face, and a valve fillet body interconnecting the valve stem body and the valve head body. The valve fillet body surface has an increased thermal resistance compared to the valve combustion face.
- Who is the assignee on this patent?
- Eaton Intelligent Power Ltd
- What technology area does this patent fall under?
- Primary CPC classification F01L3/04. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Sep 26 2023 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 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).