Ventilation system for supercharged combustion engines
US-2016290193-A1 · Oct 6, 2016 · US
Blow-by gas reduction device
US10316714B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10316714-B2 |
| Application number | US-201815957670-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 19, 2018 |
| Priority date | Apr 20, 2017 |
| Publication date | Jun 11, 2019 |
| Grant date | Jun 11, 2019 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A blow-by gas reduction device includes: a gas return pipe, one end of which is connected to an engine and the other end of which is connected to an intake pipe, to return a blow-by gas in the engine to an intake side; an oil separator that is connected to the gas return pipe; an oil return pipe that is connected to the oil separator and is disposed with an inclination so as to return the oil to an inside of the engine; and a check valve that is provided in the oil return pipe, wherein the oil return pipe between the oil separator and the check valve is formed such that that the oil return pipe located at the check valve side is located at a lower side everywhere as compared with the oil return pipe located at the oil separator side.
First claim
Opening claim text (preview).
What is claimed is: 1. A blow-by gas reduction device comprising: a gas return pipe, one end of which is connected to an engine and the other end of which is connected to an intake pipe, to return a blow-by gas in the engine to an intake side; an oil separator that is connected to the gas return pipe to separate oil contained in the blow-by gas; an oil return pipe that is connected to the oil separator and is disposed with an inclination so as to return the oil to an inside of the engine; and a check valve that is provided in the oil return pipe, wherein when an internal pressure of a crankcase in the engine exceeds an atmospheric pressure, the check valve is closed, wherein the oil return pipe between the oil separator and the check valve is formed with the inclination such that the oil return pipe located at the check valve side is located at a lower side everywhere as compared with the oil return pipe located at the oil separator side, wherein the engine includes a flywheel housing in which an outer periphery is formed in a circular arc shape, wherein the oil separator is provided on the flywheel housing, and wherein the oil return pipe includes an inclined portion linearly extending in a tangential direction of the flywheel housing and obliquely downward from the oil separator, and a vertical portion extending downwards in the vertical direction from a lower end of the inclined portion. 2. The blow-by gas reduction device according to claim 1 , wherein the check valve is disposed so that an inlet of the oil faces upwards in a vertical direction. 3. The blow-by gas reduction device according to claim 1 , wherein the oil return pipe between the oil separator and the check valve has an inclination of at least 15 degrees or greater everywhere. 4. The blow-by gas reduction device according to claim 1 , wherein the check valve is connected to the vertical portion.
Assignees
Inventors
Classifications
- F01M13/04Primary
having means for purifying air before leaving crankcase, e.g. removing oil · CPC title
having one or more deoilers · CPC title
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- What does patent US10316714B2 cover?
- A blow-by gas reduction device includes: a gas return pipe, one end of which is connected to an engine and the other end of which is connected to an intake pipe, to return a blow-by gas in the engine to an intake side; an oil separator that is connected to the gas return pipe; an oil return pipe that is connected to the oil separator and is disposed with an inclination so as to return the oil t…
- Who is the assignee on this patent?
- Isuzu Motors Ltd
- What technology area does this patent fall under?
- Primary CPC classification F01M13/04. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jun 11 2019 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).