System for recirculating engine exhaust gas
US-9506427-B2 · Nov 29, 2016 · US
Exhaust gas recirculation device
US9739237B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9739237-B2 |
| Application number | US-201514714585-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 18, 2015 |
| Priority date | May 26, 2014 |
| Publication date | Aug 22, 2017 |
| Grant date | Aug 22, 2017 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
An exhaust gas recirculation device for an engine including a plurality of cylinders and intake branch passages is provided. The exhaust gas recirculation device includes an exhaust chamber and distribution passages for the respective cylinders. The exhaust chamber is connected to an exhaust passage of the engine, and exhaust gas from the exhaust passage is introduced into the exhaust chamber. The distribution passages connect the exhaust chamber to the intake branch passages for the respective cylinders so as to recirculate the exhaust gas back into the intake branch passages. The flow passage area of a first portion of each of the distribution passages is smaller than the flow passage area of a second portion of each of the distribution passages. The first portion is connected to the corresponding intake branch passage, and the second portion is connected to the exhaust chamber.
First claim
Opening claim text (preview).
What is claimed is: 1. An exhaust gas recirculation device for an engine including a plurality of cylinders and intake branch passages configured to supply air to the cylinders respectively, the exhaust gas recirculation device comprising: an exhaust chamber connected to an exhaust passage of the engine, exhaust gas from the exhaust passage being introduced into the exhaust chamber; and distribution passages for the respective cylinders, the distribution passages connecting the exhaust chamber to the intake branch passages for the respective cylinders so as to recirculate the exhaust gas back into the intake branch passages, a flow passage area of a first portion of each of the distribution passages being smaller than a flow passage area of a second portion of each of the distribution passages, the first portion being directly connected to the corresponding intake branch passage, and the second portion being directly connected to the exhaust chamber. 2. The exhaust gas recirculation device according to claim 1 , wherein each of the distribution passages has a portion having a flow passage area that varies, the portion being a portion other than the first portion connected to the corresponding intake branch passage. 3. The exhaust gas recirculation device according to claim 1 , wherein a flow passage area of each of the distribution passages gradually decreases in a direction from the exhaust chamber to the corresponding intake branch passage.
Assignees
Inventors
Classifications
Feeding recirculated exhaust gases directly into the combustion chambers or into the intake runners · CPC title
Layout, e.g. schematics · CPC title
in relation to engine exhaust purifying apparatus · CPC title
- F02M26/42Primary
having two or more EGR passages; EGR systems specially adapted for engines having two or more cylinders · CPC title
in which a main EGR passage is branched into multiple passages · CPC title
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Frequently asked questions
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- What does patent US9739237B2 cover?
- An exhaust gas recirculation device for an engine including a plurality of cylinders and intake branch passages is provided. The exhaust gas recirculation device includes an exhaust chamber and distribution passages for the respective cylinders. The exhaust chamber is connected to an exhaust passage of the engine, and exhaust gas from the exhaust passage is introduced into the exhaust chamber. …
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F02M26/42. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Aug 22 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).