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Method and device for the regeneration of a particle filter arranged in the exhaust gas train of an internal combustion engine

一种颗粒过滤器、排气管路的技术，应用在排气装置、消音装置、机器/发动机等方向，能够解决零件密集、大结构体积、不可实际使用等问题

Active Publication Date: 2010-03-24
MAN TRUCK & BUS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to NO 2 toxicity, which is still impractical and undesirable
[0011] Obviously, such structures are relatively part-dense and less compact, thus resulting in an overall large structural volume

Method used

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  • Method and device for the regeneration of a particle filter arranged in the exhaust gas train of an internal combustion engine
  • Method and device for the regeneration of a particle filter arranged in the exhaust gas train of an internal combustion engine
  • Method and device for the regeneration of a particle filter arranged in the exhaust gas train of an internal combustion engine

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example

[0044] In the case of the example of the invention, a NO is also connected downstream of the particle filter 3 x - A reduction catalyst 23, such as an SCR catalyst.

[0045] Additionally, as in figure 1 Drawn only by dashed lines in , an additional HC-oxidation catalyst 18 can be provided downstream of the inlet point 7 and upstream of the particle filter 3 , whereby high hydrocarbon concentrations can be reliably avoided downstream of the particle filter 3 . Alternatively or additionally, the particle filter 3 itself can also be equipped with corresponding active components for this purpose.

[0046] exist figure 2 A second embodiment of the regeneration device 1 according to the invention is shown schematically and exemplarily in which, for a particularly compact and thus space-saving construction, the HC-oxidation catalyst 8 is mounted and accommodated in an annular ring surrounding the HC- Area of ​​the untreated exhaust gas line of the oxidation catalytic converter 8...

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Abstract

A method and a device for the regeneration of a particle filter, especially a diesel particle filter, arranged in the exhaust gas train of an internal combustion engine, wherein an exhaust gas stream to be cleaned is supplied to the at least one particle filter. The exhaust gas stream supplied to the at least one particle filter (3) is a raw exhaust gas stream (15) of the internal combustion engine, into which, during regeneration mode, a heated exhaust gas stream (16') at a higher temperature than the raw exhaust gas stream (15) is mixed at a point upstream of the particle filter (3) under the control of a control device and / or regeneration device, which actuates a throttle device and / or shut-off device (13) in accordance with predetermined regeneration parameters.

Description

technical field [0001] The invention relates to a method for regenerating a particle filter arranged in an exhaust gas line (Abgastrang) of an internal combustion engine according to the preamble of claim 1 and a method for regenerating an exhaust gas of an internal combustion engine according to the preamble of claim 8 In-line particulate filter installation. [0002] The invention relates in particular to a method and a device for regenerating a particle filter in the case of an internal combustion engine operated with an excess of air, such as a diesel or gasoline engine with direct injection, such as those used in commercial vehicles or passenger cars. Background technique [0003] In order to minimize fine material particles, so-called particle traps or particle filters are often used in motor vehicles. A particle depositor arrangement in motor vehicles is known, for example, from EP 1072765 A2. Such particle depositors differ from particle filters in that the exhaust...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/025
CPCF01N3/025
Inventor A·多林
Owner MAN TRUCK & BUS AG
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