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Integrated device, tail gas after-treatment system and control method

A technology of integrating devices and nozzles, which is applied in exhaust gas treatment, electronic control of exhaust gas treatment devices, muffler devices, etc., can solve problems such as high cost and complicated installation

Pending Publication Date: 2017-07-07
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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  • Integrated device, tail gas after-treatment system and control method
  • Integrated device, tail gas after-treatment system and control method
  • Integrated device, tail gas after-treatment system and control method

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Embodiment Construction

[0131] 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 aftertreatment system 100 includes an injection system 200 for aftertreatment of exhaust gas and a package system 300 for aftertreatment of exhaust gas, wherein the injection system includes 200 for pumping urea solution from the urea tank 201 (shown by 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 can be, for example...

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Abstract

An integrated device of a pump and a nozzle comprises a shell, a pump assembly and a nozzle assembly. The pump assembly comprises a motor coil used for driving the pump, a magnetic body interacting with the motor coil, a first gear assembly and a second gear assembly. The first gear assembly and the second gear assembly mesh with each other. The first gear assembly comprises a first gear shaft and a first gear. The second gear assembly comprises a second gear shaft and a second gear. The integrated device is provided with a first shaft sleeve matched with the first gear shaft, and a second shaft sleeve matched with the second gear shaft. The nozzle assembly comprises a nozzle coil used for driving the nozzle. The motor coil and the nozzle coil are controlled independently. The integrated device is simple and compact in structure and high in control precision. In addition, the invention further relates to a tail gas after-treatment 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): F01N3/28F01N9/00
CPCF01N3/2882F01N9/00F01N2610/02F01N3/08Y02T10/40
Inventor 樊高峰彭威波杨振球宋红卫
Owner TENNECO SUZHOU EMISSION SYST