Internal combustion engine
US-2024003313-A1 · Jan 4, 2024 · US
Valve for internal combustion engines and method for obtaining a valve
US9683466B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9683466-B2 |
| Application number | US-201514752827-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 26, 2015 |
| Priority date | Jun 30, 2014 |
| Publication date | Jun 20, 2017 |
| Grant date | Jun 20, 2017 |
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- Title
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Abstract
Official abstract text for this publication.
A valve for an internal combustion engine may include a ferrous body having a neck. At least one area of the neck may include a surface layer with a thickness of up to 300 μm. The valve may also be provided with at least 17% solubilized metallic chromium, which may be obtained by an application of a surface melting treatment.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for obtaining a ferrous valve containing chromium for internal combustion engines comprising: cutting steel bars, friction welding of a valve body with a valve tip, beating the valve body, forging of at least one area of the valve and, applying a heat treatment, applying a surface melting treatment for solubilizing metallic chromium in the at least one forged area of the valve, and wherein the surface melting treatment reaches a temperature of up to 500 C and results in the at least one forged area of the valve having a hardness of approximately 100 Hs. 2. A method according to claim 1 , wherein the surface melting treatment takes place by laser remelting. 3. A method according to claim 1 , wherein the surface melting treatment occurs in a thickness of up to 300 μm. 4. A method according to claim 3 , wherein the surface melting treatment occurs in a thickness of up to 200 μm. 5. A method according to claim 4 , wherein the surface melting treatment occurs in a thickness of up to 100 μm. 6. A method according to claim 1 , wherein the at least one forged area is at least one area of a neck of the valve. 7. A method according to claim 6 , wherein the at least one area of the neck contains at least 17% chromium. 8. A method according to claim 1 , wherein the at least one forged area contains at least 17% chromium. 9. A method according to claim 8 , wherein the at least 17% chromium is solubilized metallic chromium. 10. A method according to claim 1 , wherein the at least one forged area is provided with a dendritic structure.
Assignees
Inventors
Classifications
Coated valve members or valve-seats · CPC title
- F01L3/02Primary
Selecting particular materials for valve-members or valve-seats; Valve-members or valve-seats composed of two or more materials · CPC title
Manufacturing of components used in valve arrangements · CPC title
Shapes or constructions of valve members, not provided for in preceding subgroups of this group · CPC title
poppet valves · CPC title
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Frequently asked questions
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- What does patent US9683466B2 cover?
- A valve for an internal combustion engine may include a ferrous body having a neck. At least one area of the neck may include a surface layer with a thickness of up to 300 μm. The valve may also be provided with at least 17% solubilized metallic chromium, which may be obtained by an application of a surface melting treatment.
- Who is the assignee on this patent?
- Mahle Int Gmbh, Mahle Metal Leve Sa
- What technology area does this patent fall under?
- Primary CPC classification F01L3/02. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jun 20 2017 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).