Two-stage cooled exhaust gas recirculation system

US8991369B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-8991369-B2
Application numberUS-99817509-A
CountryUS
Kind codeB2
Filing dateSep 30, 2009
Priority dateOct 2, 2008
Publication dateMar 31, 2015
Grant dateMar 31, 2015

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  1. Title

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  2. Abstract

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  5. First independent claim

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Abstract

Official abstract text for this publication.

A device for cooled recirculation of exhaust gas of an internal combustion engine charged with the aid of an exhaust gas turbocharger, the internal combustion engine having a fresh gas system and an exhaust gas system, which are connected to a two-stage exhaust gas cooler via an exhaust gas recirculation line. A device by way of which a sufficient amount of exhaust gas may be recirculated by simple means is provided. This is achieved in that exhaust gas recirculation line 8 a, 8 b is connected to an exhaust gas collecting line 7 a, 7 b of the exhaust gas system upstream from turbine 6 of exhaust gas turbocharger 5 in the direction of flow, an exhaust gas recirculation valve 9 a, 9 b being connected upstream from first stage 10 a, 10 b of the exhaust gas cooler in exhaust gas recirculation line 8 a, 8 b, and a nonreturn valve 11 a, 11 b is inserted into a continuation line 12 a, 12 b leading to the second stage of the exhaust gas cooler.

First claim

Opening claim text (preview).

The invention claimed is: 1. A device for cooled recirculation of exhaust gas of an internal combustion engine charged with the aid of an exhaust gas turbocharger, the internal combustion engine having a fresh gas system and an exhaust gas system, the device comprising: an exhaust gas recirculation line connecting a two-stage exhaust gas cooler to the fresh gas system and the exhaust gas system, the exhaust gas recirculation line being connected to an exhaust gas collecting line o…

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What does patent US8991369B2 cover?
A device for cooled recirculation of exhaust gas of an internal combustion engine charged with the aid of an exhaust gas turbocharger, the internal combustion engine having a fresh gas system and an exhaust gas system, which are connected to a two-stage exhaust gas cooler via an exhaust gas recirculation line. A device by way of which a sufficient amount of exhaust gas may be recirculated by si…
Who is the assignee on this patent?
Huelsmann Bernd, Deutz Ag
What technology area does this patent fall under?
Primary CPC classification F02M25/0713. Mapped technology areas include Mechanical Engineering.
When was this patent published?
Publication date Tue Mar 31 2015 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).