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Integration device, tail gas aftertreatment system and control method

A technology of integrating devices and nozzles, which is applied in the direction of exhaust gas treatment, electronic control of exhaust gas treatment devices, muffler devices, etc., can solve the problems of complicated installation and high cost, and achieve the effect of simple structure and convenient installation.

Active Publication Date: 2017-12-12
TENNECO SUZHOU EMISSION SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the existing urea injection system contains many parts, complicated installation and high cost

Method used

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  • Integration device, tail gas aftertreatment system and control method
  • Integration device, tail gas aftertreatment system and control method
  • Integration device, tail gas aftertreatment system and control method

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Embodiment Construction

[0113] Please refer to figure 1 As shown, the present invention discloses an exhaust gas after-treatment system 100, which can be applied to treat the exhaust gas of the engine 10 to reduce the emission of harmful substances to meet the requirements of emission regulations. The exhaust gas post-treatment system 100 includes an injection system 200 for exhaust gas post-treatment and a packaging system 300 for exhaust gas post-treatment, wherein the injection system 200 includes a urea solution for pumping from the urea tank 201 (see arrow X) and An integrated device 1 for injecting urea solution into the exhaust of the engine 10 (for example, into the exhaust pipe 106 or the packaging system 300); the packaging system 300 includes a mixer 301 located downstream of the integrated device 1 and a The carrier 302 downstream of the mixer 301. Of course, in some embodiments, no mixer may be provided, or two or more mixers may be provided. The carrier 302 may be, for example, select...

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Abstract

Disclosed is an integration device of a pump and a nozzle. The integration device comprises a pump assembly and a nozzle assembly; the pump assembly is provided with a containing cavity used for containing the nozzle assembly, a pump assembly shell and a pump; the pump assembly shell comprises an inlet channel and an outlet channel, and the outlet channel is communicated with the nozzle assembly; the pump assembly comprises a cover shell, a motor coil used for driving the pump, a magnetic body, a first gear assembly and a second gear assembly which are engaged; the motor coil is in interference fit into a cover shell cavity; the nozzle assembly comprises a nozzle assembly shell and a nozzle; the nozzle assembly further comprises a nozzle coil used for driving the nozzle. The motor coil and the nozzle coil are independently controlled. The integration device is simple and compact in structure and high in control precision. In addition, the invention relates to a tail gas aftertreatment system and a control method.

Description

technical field [0001] The invention relates to an integrated device, an exhaust gas aftertreatment system and a control method, and belongs to the technical field of engine exhaust aftertreatment. Background technique [0002] As the emission standards of internal combustion engine vehicles become more and more stringent, in order to reduce harmful substances such as nitrogen oxides in the exhaust, the post-treatment technology commonly used in the industry is selective catalytic reduction (SCR), and the exhaust gas is installed upstream of the SCR. Spray urea solution in. The urea solution is hydrolyzed and pyrolyzed to generate ammonia gas, and chemically reacts with nitrogen oxides to reduce the concentration of harmful substances. [0003] Urea injection systems currently on the market generally include air-assisted and non-air-assisted systems. Of course, no matter which system includes the urea tank assembly, the pump supply unit connected to the urea tank assembly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/20F01N9/00
CPCF01N3/206F01N3/2073F01N3/208F01N2610/1486F01N2610/1473F01N2610/146F01N2610/1453F01N2610/144F01N2610/1433F01N2610/03F01N2610/02F01N3/08Y02T10/40
Inventor 彭威波樊高峰杨振球宋红卫王学良陈国立
Owner TENNECO SUZHOU EMISSION SYST