Compact type post-processing cylinder type packaging structure of light diesel vehicle
A packaging structure and technology for diesel vehicles, applied in mufflers, exhaust devices, engine components, etc., can solve the problems of complex after-treatment devices, many components, and difficulty in taking into account diesel engine emissions, power and thermal cycle efficiency at the same time. , to achieve the effect of low risk of urea crystallization, sufficient crushing and excellent mixing effect
Inactive Publication Date: 2019-06-14
WUXI WEIFU LIDA CATALYTIC CONVERTER
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Problems solved by technology
Compared with the simple after-treatment devices for diesel vehicles in China IV and V, the after-treatment devices for diesel vehicles in China VI are more complex and have more components, making it difficult to balance the emission performance, power performance and thermal cycle efficiency of diesel engines at the same time
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[0026] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0027] figure 1 Including 1-intake flange, 2-intake straight pipe section, 3-connecting cylinder, 4-front end cover, 5-cylinder body, 6-rear end cover, 7-exhaust elbow section, 8-spoiler Straight orifice plate, spoiler straight orifice plate round hole 8-1, 9-disturbance arc-shaped orifice plate, spoiler arc-shaped orifice plate small hole 9-1, spoiler arc-shaped orifice plate large hole 9-2, 10- Diesel oxidation catalyst DOC carrier, 11-SCRF carrier, 12-front special-shaped opening plate, front special-shaped opening plate main inlet 12-1, front special-shaped opening plate pressure relief port 12-2, 13-upper insert plate, upper insert Plate urea baffle 13-1, 14-lower insert plate, lower insert plate urea baffle 14-1, 15-curved baffle, 16-rear special-shaped opening plate, rear special-shaped opening plate main outlet 16-1, Rear special-s...
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The invention relates to a compact type post-processing cylinder type packaging structure of a light diesel vehicle. The compact type post-processing cylinder type packaging structure comprises a connecting cylinder, wherein one side of the connecting cylinder is connected with a front end cover, a cylinder body is arranged in the middle of the right part of the connecting cylinder, and a combinedturbulent flow pore plate is arranged on the periphery of the part, located in the connecting cylinder, of the cylinder; a diesel oxidation catalyst DOC carrier is arranged at one end of the cylinderbody, a compact mixing unit is arranged in the middle of the cylinder body, a urea nozzle is arranged above the compact mixing unit, and an SCRF carrier is arranged at the other end of the cylinder body; the other side of the cylinder body is connected with a rear end cover, and one side of the rear end cover is connected with an exhaust elbow section. The compact type post-processing cylinder type packaging structure has the advantages that the structure is compact, the smaller arrangement and installation space can be met, the heat loss is less, the ignition of the diesel oxidation catalystDOC and the carbon smoke regeneration of the SCRF are facilitated, the rotational flow effect of the compact mixing unit is obvious, the urea droplets are sufficiently crushed, the mixing effect of the urea and the airflow is excellent, and the urea crystallization risk is relatively small.
Description
technical field [0001] The invention belongs to the technical field of post-treatment of diesel vehicle exhaust, and in particular relates to a compact post-processing cartridge packaging structure for light-duty diesel vehicles. Background technique [0002] With the increasingly stringent requirements of the national diesel vehicle exhaust pollutant emission regulations, the new National VI emission standards set lower emission limits for exhaust pollutants, and added a new PN (soot particle number) limit value, which only depends on the cylinder Internal purification technology can no longer meet the stringent emission standards. In order to achieve the lower limit of multiple emissions at the same time, the post-treatment devices of major domestic main engine manufacturers have chosen to use selective catalytic reduction (SCR) converters and diesel soot particulate filters (DPF). It is DOC (diesel oxidation catalytic converter) + DPF / CDPF + SCR. Compared with the simpl...
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IPC IPC(8): F01N3/20F01N3/28
CPCY02A50/20
Inventor 付细平陈增响何伟娇何龙张俊超张旭蒋海荣
Owner WUXI WEIFU LIDA CATALYTIC CONVERTER