Cylindrical post processor assembly
A post-processor and assembly technology, applied in machine/engine, muffler, engine components, etc., to reduce tailpipe noise, reduce carrier volume, and reduce emissions
Inactive Publication Date: 2013-04-03
CHINA FIRST AUTOMOBILE
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is to integrate the traditional muffler and the post-processor to provide a cartridge-type post-processor assembly that can simultaneously reduce emissions and engine noise, and reduce manufacturing process difficulty and assembly cost.
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[0023] The present invention will be described in further detail below through specific embodiments and in conjunction with the accompanying drawings.
[0024] The device capable of reducing engine exhaust pollutants and exhaust noise of the present invention includes a mixing unit, a post-processing unit and a noise reduction unit.
[0025] 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.
[0026] A cartridge type post-processor assembly, consisting of a flange 1, an end cover 2, a temperature sensor 3, an intake pipe 4, a mixing plate 5, a post-processing unit assembly 6, a partition a7, a partition c9, a partition b11, Partition d12, sound-absorbing pipe 8, muffler pipe 10, exhaust pipe 13, nitrogen and oxygen sensor 14, exhaust tailpipe 15, insulation board 16, shell 17; flange 1, end cover 2, temperature sensor 3, The air intake pipe 4 and the mixing p...
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The invention relates to a cylindrical post processor assembly which is particularly suitable for being assembled on a vehicle to be beneficial for spatial arrangement. In the assembly, the traditional silencer and a post processor are integrated together, so that exhaust gas pollutants and exhaust noises of an engine can be simultaneously reduced. According to the invention, the cylindrical post processor assembly comprises a mixing unit assembly, a post processing unit assembly and a noise reducing unit assembly, wherein the mixing unit assembly (A), a post processing unit assembly (6) and a noise reducing unit assembly (B) are independent assemblies and fixedly packaged in a housing (17) in sequence through a front-and-back end cover (2); and a heat insulating plate (16) is sleeved outside the housing (17). The cylindrical post processor assembly provided by the invention can be suitable for four different post processing lines and has the advantages of excellent noise reducing performance, high exhaust gas pollutant converting efficiency, low back pressure, high reliability and so on; moreover, as the assembly is cylindrical and can be suspended under a frame, side space of the frame is saved, simple production process, high efficiency, low cost and very strong market competitiveness are obtained.
Description
technical field [0001] The invention relates to a cartridge-type after-processor assembly, in particular, a cartridge-type after-processor assembly which is suitable for space arrangement and assembly on a complete vehicle. 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 simultaneously reduce the above two exhaust pollutants in the engine 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 nitrogen. The emission of one exhaust pollutant in the oxygen compound, and then use the exhaust after-treatment device to reduce the emission of the other exhaust pollutant, so that the two exhaust po...
Claims
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IPC IPC(8): F01N13/00F01N13/18
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