Internal combustion engine
US-2024003313-A1 · Jan 4, 2024 · US
Cylinder head for internal combustion engine
US10731597B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10731597-B2 |
| Application number | US-201916298140-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 11, 2019 |
| Priority date | May 8, 2018 |
| Publication date | Aug 4, 2020 |
| Grant date | Aug 4, 2020 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A cylinder head for an internal combustion engine, includes: first and second valves being intake valves or exhaust valves; a first circumferential wall portion defining a first port, the first port being opened and closed by the first valve and communicating with a combustion chamber; and a first overlay welded portion formed on the first circumferential wall portion and serving as a first valve seat on which the first valve is seated.
First claim
Opening claim text (preview).
What is claimed is: 1. A cylinder head for an internal combustion engine, comprising: first and second valves being intake valves or exhaust valves; a first circumferential wall portion defining a first port, the first port being opened and closed by the first valve and communicating with a combustion chamber; and a first overlay welded portion formed on the first circumferential wall portion and serving as a first valve seat on which the first valve is seated, wherein the first circumferential wall portion includes a first thick portion in which a thickness of the first circumferential wall portion in a radial direction is partially increased, and the first thick portion is located in a center side of the combustion chamber with respect to a first line segment passing through both axes of the first and second valves, and in an opposite side of the center side of the combustion chamber with respect to a second line segment orthogonal to the first line segment and passing through the axis of the first valve, when viewed in a direction of the axis of the first valve. 2. The cylinder head for the internal combustion engine of claim 1 , wherein the first and second valves are the intake valves. 3. The cylinder head for the internal combustion engine of claim 1 , further comprising: a second circumferential wall portion defining a second port, the second port being opened and closed by the second valve and communicating with the combustion chamber; and a second overlay welded portion formed on the second circumferential wall portion and serving as a second valve seat on which the second valve is seated, wherein the second circumferential wall portion includes a second thick portion in which a thickness of the second circumferential wall portion in a radial direction is partially increased, and the second thick portion is located in the center side of the combustion chamber with respect to the first line segment, and in an opposite side of the center side of the combustion chamber with respect to a third line segment orthogonal to the first line segment and passing through the axis of the second valve, when viewed in a direction of the axis of the second valve. 4. The cylinder head for the internal combustion engine of claim 1 , wherein the first thick portion extends along the axis of the first valve in a direction away from the combustion chamber.
Assignees
Inventors
Classifications
Copper or alloys thereof · CPC title
- F02F1/4214Primary
specially adapted for four or more valves per cylinder · CPC title
taking account of the properties of the material involved (B23K26/32, B23K26/40 take precedence) · CPC title
Pistons · CPC title
by welding · CPC title
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Frequently asked questions
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- What does patent US10731597B2 cover?
- A cylinder head for an internal combustion engine, includes: first and second valves being intake valves or exhaust valves; a first circumferential wall portion defining a first port, the first port being opened and closed by the first valve and communicating with a combustion chamber; and a first overlay welded portion formed on the first circumferential wall portion and serving as a first val…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F02F1/4214. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Aug 04 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).