Internal combustion engine
US-2020141294-A1 · May 7, 2020 · US
Ventilator-equipped engine
US11280233B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11280233-B2 |
| Application number | US-202017119514-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 11, 2020 |
| Priority date | Dec 20, 2019 |
| Publication date | Mar 22, 2022 |
| Grant date | Mar 22, 2022 |
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- Title
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- Abstract
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- First independent claim
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Abstract
Official abstract text for this publication.
The ventilator-equipped engine is configured to: guide a blow-by gas generated in a crankcase to an intake passage through an inside of a cylinder head, an inside of a head cover, and a pressure regulating valve; and to directly introduce fresh air into an internal space of the cylinder head by providing a fresh air introduction passage that extends across the intake passage and the cylinder head.
First claim
Opening claim text (preview).
What is claimed is: 1. A ventilator-equipped engine that is configured to: guide a blow-by gas generated in a crankcase to an intake passage through an inside of a cylinder head, an inside of a head cover, and a pressure regulating valve; directly introduce fresh air into an internal space of the cylinder head, without having the fresh air flow through the head cover, by providing a fresh air introduction passage that extends across the intake passage and the cylinder head; and, wherein a fresh air introduction chamber that communicates with and is connected to the fresh air introduction passage in the internal space is formed in a space different from a space in the internal space where a valve operating component is disposed. 2. The ventilator-equipped engine according to claim 1 , wherein the fresh air introduction chamber is provided in the cylinder head on a side where an intake manifold is disposed. 3. The ventilator-equipped engine according to claim 2 , wherein the fresh air introduction chamber is provided in the cylinder head so as to be adjacent to a water jacket. 4. The ventilator-equipped engine according to claim 3 , wherein the internal space has a curved path. 5. The ventilator-equipped engine according to claim 2 , wherein the internal space has a curved path. 6. The ventilator-equipped engine according to claim 2 , wherein a connection point between the fresh air introduction passage and the intake passage is located upstream of a return point of the blow-by gas in the intake passage with respect to a fresh air flowing direction. 7. The ventilator-equipped engine according to claim 1 , wherein the fresh air introduction chamber is provided in the cylinder head so as to be adjacent to a water jacket. 8. The ventilator-equipped engine according to claim 7 , wherein the internal space has a curved path. 9. The ventilator-equipped engine according to claim 7 , wherein a connection point between the fresh air introduction passage and the intake passage is located upstream of a return point of the blow-by gas in the intake passage with respect to a fresh air flowing direction. 10. The ventilator-equipped engine according to claim 1 , wherein the internal space has a curved path. 11. The ventilator-equipped engine according to claim 1 , wherein a connection point between the fresh air introduction passage and the intake passage is located upstream of a return point of the blow-by gas in the intake passage with respect to a fresh air flowing direction.
Assignees
Inventors
Classifications
having means for purifying air before leaving crankcase, e.g. removing oil · CPC title
arranged in valve-covers · CPC title
Crankcase pressure · CPC title
with one or more valves · CPC title
Control valves in suction conduit · CPC title
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Frequently asked questions
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- What does patent US11280233B2 cover?
- The ventilator-equipped engine is configured to: guide a blow-by gas generated in a crankcase to an intake passage through an inside of a cylinder head, an inside of a head cover, and a pressure regulating valve; and to directly introduce fresh air into an internal space of the cylinder head by providing a fresh air introduction passage that extends across the intake passage and the cylinder head.
- Who is the assignee on this patent?
- Kubota Kk
- What technology area does this patent fall under?
- Primary CPC classification F01M13/022. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Mar 22 2022 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).