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Exhaust gas recirculation modules for internal combustion engines

A technology of exhaust gas recirculation and exhaust gas recirculation valve, which is applied in the direction of exhaust gas recirculation, internal combustion piston engine, combustion engine, etc., can solve the problems of high structural space requirements and installation costs, and save parts, avoid pipelines, and structural space high effect

Active Publication Date: 2016-09-21
PIERBURG GMBH & CO KG NEUSS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Of course, in the disclosed case of using two separate coolers which are each connected via a line to the exhaust gas recirculation valve arranged in between, there is a high installation space requirement and installation effort

Method used

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  • Exhaust gas recirculation modules for internal combustion engines
  • Exhaust gas recirculation modules for internal combustion engines

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Embodiment Construction

[0019] The exhaust gas recirculation module according to the invention comprises two housings which are nested in one another, wherein the housing which is manufactured in a sand casting process, preferably in one piece, is the housing 2 , inside which housing 2 is located, preferably in a die casting process. Manufactured inner shell4. The inner housing 4 is produced in two pieces and has a pot-shaped first housing part 6 and a second housing part in the form of a cover 8 closing it in cross-section, for example by contacting connected by friction welding. Ribs 10 extend from the cover 8 and from the first housing part 6 into an exhaust gas channel 12 formed inside the inner shell 4 , which in the present embodiment is divided into two channels separated by a longitudinal wall 13 . The ribs 10 are arranged at a relatively small distance from each other.

[0020] The inner shell 4 is surrounded by coolant channels, which are formed as a coolant jacket 14 and are formed betwe...

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Abstract

The invention relates to an exhaust gas recirculation module for an internal combustion engine with an exhaust gas cooler (16), an exhaust gas recirculation valve (26) arranged upstream of the exhaust gas cooler (16) and an exhaust gas recirculation Exhaust passage (20) upstream of recirculation valve (26). Such exhaust gas recirculation modules generally require a large installation space and are expensive to install. It is therefore proposed that the exhaust gas recirculation module has an outer shell (2) in which an exhaust gas duct (20) is formed and an inner shell (4) of an exhaust gas cooler (16) is arranged, wherein the inner shell (4) and the exhaust gas duct A coolant channel (14) is provided between (20). In this way, the exhaust gas duct ( 20 ) acts as a precooler and no additional connecting lines between the cooler and the valve are required.

Description

technical field [0001] The invention relates to an exhaust gas recirculation module for an internal combustion engine with an exhaust gas cooler, an exhaust gas recirculation valve upstream of the exhaust gas cooler, and an exhaust gas duct upstream of the exhaust gas recirculation valve. Background technique [0002] Such exhaust gas recirculation modules are known. The exhaust gas recirculation module serves to reduce pollutants in the exhaust gas of an internal combustion engine. For this purpose, there is usually a branch after the exhaust gas manifold, at which branch the exhaust gas discharge line is separated from the exhaust gas recirculation line. However, the closer the exhaust gas recirculation line is to the engine block, the higher the temperature of the exhaust gas, which can still reach approximately 700° C. in this region. In particular when using electrically driven exhaust gas recirculation valves, this leads to thermal overloading of the electric motor o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M26/22F02M26/30
CPCF28F3/048F28F9/00F28D9/0031F28F2250/06F02M26/73F02M26/50F02M26/11F02M26/23F02M26/24F02M26/30F02M26/32F02M26/33F02M26/51F02M26/25Y02T10/12
Inventor H-J.休斯格斯H-U.库内尔P.科巴赫
Owner PIERBURG GMBH & CO KG NEUSS
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