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Exhaust gas aftertreatment device and exhaust gas aftertreatment method

A waste gas post-treatment and waste gas technology, which is applied in the direction of exhaust devices, silencers, gas chambers, etc., can solve the problems of corrosion, noise reducer weakening and stable matching, and infeasibility, so as to achieve effective noise reduction effect

Inactive Publication Date: 2017-08-18
MAN ENERGY SOLUTIONS SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, this type of noise reducer has the disadvantage that there are movable parts in the exhaust gas flow which are prone to severe corrosion, especially when the internal combustion engine whose exhaust sound is to be damped is operated with a large amount of sulphur-containing fuel
In addition, in the case of this type of noise reducer, only a plurality of narrow-band frequency ranges can be subjected to effective noise reduction, the attenuation effect of the noise reducer is smooth to the most different frequency ranges of the exhaust sound to be reduced. match is not feasible

Method used

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  • Exhaust gas aftertreatment device and exhaust gas aftertreatment method
  • Exhaust gas aftertreatment device and exhaust gas aftertreatment method
  • Exhaust gas aftertreatment device and exhaust gas aftertreatment method

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Embodiment Construction

[0020] The invention relates to an exhaust gas aftertreatment device for an internal combustion engine, in particular for a marine diesel internal combustion engine operated with heavy fuel oil.

[0021] figure 1 A schematic view of a first exemplary embodiment of an exhaust gas aftertreatment device 10 according to the invention is shown for an internal combustion engine, in particular for a marine diesel internal combustion engine operated with heavy fuel oil.

[0022] The exhaust gas aftertreatment device 10 includes a housing 11 . The housing 11 delimits on the one hand an exhaust gas chamber 12 through which the exhaust gas flows continuously, into which the exhaust gas flows in via the inlet 13 and from which the exhaust gas flows out via the outlet; and on the other hand defines a noise reduction chamber 15 .

[0023] The noise reduction chamber 15 is connected to the exhaust gas chamber 12 .

[0024] A fluid, in particular a liquid or a flowable solid, in particular...

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Abstract

Disclosed is an exhaust gas aftertreatment device (10) for an internal combustion engine, especially for a ship diesel engine running on heavy oil, comprising a housing (11), an exhaust gas chamber (12) which is defined by the housing (11) and through which exhaust gas continuously flows, entering thereinto via an inlet (13) and exiting therefrom via an outlet (14), further comprising a noise damping chamber (15) which is defined by the housing (11), is coupled to the exhaust gas chamber (12), and holds a fluid or a pourable solid at a certain fill level that depends on the frequency of the exhaust gas noise to be damped.

Description

technical field [0001] The invention relates to an exhaust gas aftertreatment device and a method for exhaust gas aftertreatment. Background technique [0002] It is known from the prior art that not only exhaust gas purification devices, such as exhaust gas catalytic converters or exhaust gas scrubbers, but also noise reducers can be retrofitted to internal combustion engines as exhaust gas aftertreatment components. Exhaust gas catalytic converters are used in particular for denitrification and / or desulfurization of exhaust gases and thus for reducing nitrogen oxide emissions and sulfur oxide emissions. Noise reducers are used for noise reduction and thus for reducing sound emissions. [0003] The noise reducers known from the prior art are usually located downstream of the exhaust gas purification system and are designed as so-called resonance or lambda / 4 noise reducers, which are based on the fact that the chambers of the noise reducer have a The depth or length of fre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N1/02F01N1/06F01N1/16
CPCF01N1/023F01N1/06F01N1/161F01N2230/02F01N2230/04F01N2490/12F01N2590/02F01N1/02
Inventor A.德林
Owner MAN ENERGY SOLUTIONS SA
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