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Box-type postprocessor assembly

A post-processor and assembly technology, applied in the field of auto parts, to achieve the effect of strong noise reduction, low back pressure, and reduced radiation noise

Inactive Publication Date: 2013-04-17
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the patent of this invention is to integrate the traditional muffler with the after-processor to provide a device that can reduce engine emission and exhaust noise at the same time

Method used

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Embodiment Construction

[0028] specific implementation plan

[0029] Taking the selective catalytic reduction post-processor as an example, the structural design and manufacturing process of the assembly will be described in detail below.

[0030] The device of the present invention that can reduce engine exhaust pollutants and exhaust noise has a box-like shape, a flange connection to the air inlet, a temperature sensor 14, and a nitrogen-oxygen sensor 16 behind the post-processing unit. .

[0031] The device of the present invention that can reduce engine exhaust pollutants and exhaust noise includes a mixing unit, a post-processing unit, and a noise reduction unit. noise effect.

[0032] like figure 1 As shown, the mixing unit in the present invention is formed by the intake pipe 13, the shell 18, the partition I2, the partition II4, the aftertreatment package assembly 3, the sound absorption pipe I10, the sound absorption pipe II11, the left end cover 1 and the right end cover 8 The post-proc...

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Abstract

The invention belongs to the technical field of automobile parts and relates to a box-type postprocessor assembly. The box-type postprocessor assembly comprises a mixed unit, a post-processing unit and a noise reduction unit and is provided with sensors, and each of the mixed unit, the post-processing unit and the noise reduction unit consists of some of end covers, a shell, baffles, sound-absorbing tubes, a post-processing packaging assembly, acoustic boards and an air intake pipe. The box-type postprocessor assembly can be applicable to an SCR (selective catalytic reduction) postprocessor, a transparent POC (particulate organic carbon) filtering postprocessor with a catalyst coating, a DOC (diesel oxidation catalyst) postprocessor and a DPF (diesel particulate filter) postprocessor, enables an engine to meet national IV and national V emission regulations by combining corresponding built-in emission reduction measures, is capable of making effective use of space and is high in conversion efficiency, high in noise reduction capability and low in back pressure.

Description

technical field [0001] The invention belongs to the technical field of auto parts, and in particular relates to a box-type post-processor assembly. Background technique [0002] Compared with the emission regulations of National IV and V, the limits of exhaust pollutants from diesel engines (mainly particles and nitrogen oxides) are much lower than those of National III emission regulations. It is difficult to reduce the above two exhaust pollutants in the engine at the same time to meet the requirements of National IV and National V emission regulations. In order to meet the emission regulations of National IV and National V, corresponding measures can only be taken in the engine to reduce particles and The emission of one exhaust pollutant in nitrogen oxides, and then use the exhaust after-treatment device to reduce the emission of the other exhaust pollutant, so that the two exhaust pollutants of the engine can meet the national IV and national V emissions Regulatory req...

Claims

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Application Information

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IPC IPC(8): F01N3/28F01N1/10
CPCY02A50/20
Inventor 王科星刘守顺邢喜春戈非朱光贞谢鹏寇珂瑛王卫兵
Owner CHINA FIRST AUTOMOBILE
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