Static mixer for an exhaust gas system of an internal combustion engine-driven vehicle, in particular motor vehicle

A static mixer and engine-driven technology, which is applied to fluid mixers, engine components, machines/engines, etc., can solve problems such as damage and cracks in the supporting grid area, achieve simple structure and manufacturing technology, and avoid damage to the mixer Effect

Active Publication Date: 2010-11-10
AUDI AG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem associated with such static mixers with a right-angle grid structure is that at very high exhaust gas temperatures and / or when the temperature changes with large gradients, in the region of the support grid of the mixer can occur cracks and damage

Method used

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  • Static mixer for an exhaust gas system of an internal combustion engine-driven vehicle, in particular motor vehicle
  • Static mixer for an exhaust gas system of an internal combustion engine-driven vehicle, in particular motor vehicle
  • Static mixer for an exhaust gas system of an internal combustion engine-driven vehicle, in particular motor vehicle

Examples

Experimental program
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Embodiment Construction

[0026] in figure 1 Schematically shows a top view of the static mixer 1 according to the present invention, as in particular in combination with image 3 with Figure 4 It can be seen that the static mixer 1 is composed of three retaining slats 2 designed as the same fittings in the first retaining slat group and two retaining slats 3 designed as the same fittings in the second retaining slat group , The retaining strip is fixed in the mixer ring 4 of the static mixer in a manner described in detail below.

[0027] Such as Figure 4 As shown, the holding slats 2 respectively have a substantially S-shaped curved portion, wherein when viewed in the longitudinal direction of the holding slats, a plurality of single-leaf plate-shaped guide vanes 5 spaced apart from each other are provided. The guide vanes 5 are from the same side of the holding slat 2 and then in the installed state-such as figure 1 Shown—extend from the same side of the mixer plane, in which, viewed along the longi...

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Abstract

The invention relates to a static mixer for an exhaust gas system of an internal combustion engine-driven vehicle, comprising a plurality of flow conduction elements that influence the flow of an exhaust gas stream, are inclined at a predefined angle towards the mixer plane and are mounted in the exhaust gas duct by means of at least one mounting strip. According to the invention, the mounting strip or strips (2, 3) is or are designed to be resilient and / or are mounted in a spring-loaded manner in the mixer plane.

Description

Technical field [0001] The invention relates to a static mixer according to the preamble of claim 1 for an exhaust system of an engine-driven vehicle, in particular a motor vehicle. Background technique [0002] It is generally known that in exhaust purification systems for reducing nitrogen oxide emissions, so-called selective catalytic reduction (SCR) is used, in which NO x The conversion is achieved in a lean environment through a specially matched catalytic converter. Here, in order to carry out NO x Reduction, adding a suitable reducing agent to the exhaust stream in order to obtain the final product such as N 2 , CO 2 And H 2 O. In active SCR-catalytic converters, for example, ammonia or urea is used as reducing agent. In order to mix the reductant with the exhaust gas, a static mixer is generally used, by means of which a desired distribution of the reductant in the exhaust gas flow is achieved to effectively purify the exhaust gas. [0003] Such a static mixer for a flow ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F3/04B01F5/04B01F5/06B01F15/00B01D53/34B01D53/92B01D53/94F01N3/28
CPCF01N3/2892B01F3/04021B01F5/0616F01N2240/20B01D53/9431Y02A50/20B01F23/213B01F25/4315
Inventor A·彼得斯M·布德尔S·格尔顿S·科尔斯M·多尔
Owner AUDI AG
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