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Compact exhaust gas treatment unit with reagent addition

A technology of exhaust gas treatment and addition unit, applied in the direction of exhaust gas treatment, exhaust device, gas channel, etc., can solve the problems of honeycomb coating damage, etc., to achieve the effect of fine distribution

Active Publication Date: 2016-06-08
VTESCO TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such an application of the reactant to the honeycomb can lead to damage to the honeycomb coating, for example by water impingement or by temperature differences between the honeycomb and the reactant.

Method used

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  • Compact exhaust gas treatment unit with reagent addition
  • Compact exhaust gas treatment unit with reagent addition
  • Compact exhaust gas treatment unit with reagent addition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] figure 1 The arrangement of exhaust gas treatment unit 1 in motor vehicle 21 is shown schematically. The motor vehicle 21 has an internal combustion engine 18 which emits exhaust gases to the environment via an exhaust line 19 . An exhaust gas treatment unit 1 having an addition unit 7 is arranged in the exhaust gas line 19 . The dosing unit 7 is connected to a device 20 , which optionally supplies reagents to the exhaust gas treatment unit 1 in a controlled manner. Further elements 22 (at least one of the following group: catalytic converter, filter, particle separator, turbocharger, adsorption device, etc.).

[0025] figure 2 A first embodiment of an exhaust gas treatment unit 1 is shown schematically. In this exemplary embodiment, the exhaust gas 10 enters the exhaust gas treatment unit 1 via the upflow region 2 in the flow direction 9 . The upflow zone 2 has an outer surface 6 , for example cylindrical, conical, etc. at least in sections, and a plurality of ...

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PUM

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Abstract

The invention relates to an exhaust gas treatment unit (1) having at least an onflow zone (2), a diversion zone (3), a backflow zone (4) and an outflow zone (5) arranged in succession in terms of flow, wherein the backflow Zone (4) and the outflow zone (5) are arranged on the outer surface of the upflow zone (2), the exhaust gas treatment unit also has an addition unit (7) for reactant (8), wherein the addition unit (7) is set in the outflow area (5).

Description

technical field [0001] The invention relates to a compact exhaust gas treatment unit in which the exhaust gas is diverted several times. In the exhaust gas unit, the exhaust gas is also treated with additives or reactants and possibly also with at least one catalytic converter, filter or the like. Background technique [0002] Due to the ever-increasing motor traffic and increasingly stringent emission standards, it is important for vehicles with an internal combustion engine to efficiently clean the exhaust gas of the internal combustion engine. For this purpose, exhaust gas purification systems are known in the prior art, in which the exhaust gas of an internal combustion engine is guided over a catalytic surface and the harmful substances in the exhaust gas, such as nitrogen oxides, carbon Conversion of black particles, carbon monoxide, hydrocarbons etc. into gases such as nitrogen, water and CO 2 substance. Generally, efficient conversion of exhaust gas requires highe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N3/035F01N3/20F01N3/28
CPCF01N3/035F01N3/106F01N3/108F01N3/2066F01N3/2889F01N2240/02F01N2240/20F01N2470/18F01N2470/22F01N2470/24F01N2610/02F01N2610/1453F01N13/009Y02T10/12Y02A50/20F01N3/20F01N3/28B01D53/94
Inventor M·布鲁格尔
Owner VTESCO TECH GMBH