Exhaust gas feed device for an internal combustion engine

Abstract

The invention relates to an exhaust gas feed device for an internal combustion engine, comprising an exhaust gas recirculation duct (12), an air intake duct (10) into which said exhaust gas recirculation duct (12) opens, and a flow-guiding element (44) that is arranged in, and at one end (42) of, said exhaust gas recirculation duct (12). Quantity regulation for an exhaust gas flow afflicted with turbulence is unknown, and it is therefore suggested that a valve seat (40) is designed at an outlet (24) at the end (42) of the exhaust gas recirculation duct (12) in which the flow-guiding element (44) is arranged, said valve seat delimiting an exhaust gas recirculation duct (12) outflow cross-section (38), controlled by a regulator body (16) of an exhaust gas recirculation valve (14).

Description

Technical field [0001] The present invention relates to an exhaust gas introduction device for an internal combustion engine, which is provided with an exhaust gas return passage, an air suction passage into which the exhaust gas return passage opens, and a flow guide element arranged in the exhaust gas return passage at one end of the exhaust gas return passage. Background technique [0002] Such exhaust gas introduction equipment is known and described in multiple applications. The purpose of this introduction device is to ensure good mixing of the exhaust gas flow and the air flow. However, it should be noted that a sufficient pressure drop should also be maintained in the exhaust gas return channel, so that a sufficient amount of exhaust gas can be returned. Accordingly, greater pressure loss is avoided. [0003] In addition to this introduction device formed for example by a channel wall with slits-the exhaust gas can flow radially from the surrounding annular channel into t...

AI Technical Summary

Problems solved by technology

[0005] In such mixing by static mixers it may happen that the streams of gas within the pre-existing gas mixture reverse in the same way as the surrounding gas so that good mixing does not occur thereafter

Whereas with mixing by radial introduction there is on the one hand relatively good mixing but on the other hand a high pressure loss

[0006] In addition, the flow regulation of the incoming exhaust gas flow is located far away from the point of introduction, making it difficult to precisely regulate the pulsations and pressure differences in the subsequent exhaust gas line

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