Assembly of spark plug and engine main body
US-9181918-B2 · Nov 10, 2015 · US
Internal combustion engine
US2023332559A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2023332559-A1 |
| Application number | US-202318194149-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 31, 2023 |
| Priority date | Apr 13, 2022 |
| Publication date | Oct 19, 2023 |
| Grant date | — |
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.
An internal combustion engine includes: a cylinder in which a piston reciprocates; a cylinder head positioned above the cylinder; a gasket disposed between the cylinder and the cylinder head; a stepped portion formed at an upper end portion of an inner peripheral surface of the cylinder; a ring member having a cylindrical shape provided to the stepped portion; and a seal member that is provided on an upper surface of the ring member and is sandwiched between the ring member and the cylinder head.
First claim
Opening claim text (preview).
What is claimed is: 1 . An internal combustion engine comprising: a cylinder in which a piston reciprocates; a cylinder head positioned above the cylinder; a gasket disposed between the cylinder and the cylinder head; a stepped portion formed at an upper end portion of an inner peripheral surface of the cylinder; a ring member having a cylindrical shape provided to the stepped portion; and a seal member that is provided on an upper surface of the ring member and is sandwiched between the ring member and the cylinder head. 2 . The internal combustion engine according to claim 1 , wherein a space is formed between an outer peripheral surface of the ring member and an inner peripheral surface of the stepped portion, and the seal member is in contact with both the ring member and the gasket. 3 . The internal combustion engine according to claim 2 , wherein the seal member is in contact with an upper surface of the ring member and an end portion of a lower surface of the gasket. 4 . The internal combustion engine according to claim 1 , wherein a space is formed between an outer peripheral surface of the ring member and an inner peripheral surface of the stepped portion, and the seal member is in contact with both the ring member and the cylinder head. 5 . The internal combustion engine according to claim 3 , wherein the ring member includes a first portion facing the stepped portion and a second portion facing a side surface of the gasket, and the seal member is in contact with both the second portion and the cylinder head. 6 . The internal combustion engine according to claim 1 , wherein a side surface of the gasket is positioned closer to the ring member than an inner peripheral surface of the stepped portion, and a width of the second portion is smaller than a width of the first portion. 7 . The internal combustion engine according to claim 1 , wherein the seal member is formed in an annular shape. 8 . The internal combustion engine according to claim 7 , wherein the seal member is hollow along a circumferential direction and is crushed between the ring member and the cylinder head. 9 . The internal combustion engine according to claim 8 , wherein a material of the seal member is softer than materials of the ring member and the cylinder head. 10 . The internal combustion engine according to claim 1 , wherein an outer peripheral surface of the ring member is a tapered surface such that a diameter of the ring member decreases downwards, and an inner peripheral surface of the stepped portion is an inclined surface parallel to the tapered surface of the ring member.
Assignees
Inventors
Classifications
- F02F11/002Primary
involving cylinder heads · CPC title
having a ring at the inside of a liner or cylinder for preventing the deposit of carbon oil particles, e.g. oil scrapers · CPC title
- F02F1/00Primary
Cylinders; Cylinder heads · CPC title
Other cylinders · CPC title
Pistons · 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 US2023332559A1 cover?
- An internal combustion engine includes: a cylinder in which a piston reciprocates; a cylinder head positioned above the cylinder; a gasket disposed between the cylinder and the cylinder head; a stepped portion formed at an upper end portion of an inner peripheral surface of the cylinder; a ring member having a cylindrical shape provided to the stepped portion; and a seal member that is provided…
- Who is the assignee on this patent?
- Isuzu Motors Ltd
- What technology area does this patent fall under?
- Primary CPC classification F02F11/002. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Oct 19 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).