Integrated apparatus, exhaust gas post-processing system, and control method

Inactive Publication Date: 2019-12-05
TENNECO SUZHOU EMISSION SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides an integrated apparatus of a pump and nozzle that simplifies installation and reduces interference between components for improved control precision. This prevents crystallization caused by excessive injection of urea and allows for a suitable ratio between the amount of urea injected into exhaust gas and nitrogen oxides. Overall, the integrated apparatus improves the performance of the urea pump and nozzle system in reducing emissions in combustion engines.

Problems solved by technology

In addition, existing urea injection systems contain a large number of components, are complex to install and have a high cost.

Method used

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  • Integrated apparatus, exhaust gas post-processing system, and control method
  • Integrated apparatus, exhaust gas post-processing system, and control method
  • Integrated apparatus, exhaust gas post-processing system, and control method

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Embodiment Construction

[0108]Referring to FIG. 1, the present invention discloses an exhaust gas post-processing system 100, which can be used to process exhaust gas of an engine 10, reducing emissions of harmful substances so as to meet the requirements of emissions regulations. The exhaust gas post-processing system 100 comprises an injection system 200 of exhaust gas post-processing and an encapsulated system 300 of exhaust gas post-processing, wherein the injection system 200 comprises an integrated apparatus 1 for pumping a urea solution from a urea tank 201 (see arrow X) and injecting the urea solution into intake gas or exhaust gas of the engine 10 (e.g. into an exhaust pipe 106 or the encapsulated system 300); the encapsulated system 300 comprises a mixer 301 located downstream of the integrated apparatus 1 and a support 302 located downstream of the mixer 301. Of course, in some embodiments, it is also possible for no mixer to be provided, or for two or more mixers to be provided. The support 302...

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Abstract

An integrated apparatus of a pump and a nozzle, comprising a pump component and a nozzle component. The pump component comprises a motor housing assembly, a magnetic cover component and a pump housing assembly. The motor housing assembly comprises a magnetic screening cover and a motor coil. The motor housing assembly is fixed to the pump housing assembly by means of a method of rolling or welding. The pump housing assembly comprises an inlet pathway, which is in communication with a pump, and an outlet pathway, the outlet pathway being in communication with the nozzle component. The pump housing assembly also comprises a first gear assembly and a second gear assembly which are mutually engaged. The nozzle component comprises a nozzle assembly and a water cooling base, wherein the nozzle assembly comprises a nozzle coil for use in driving the nozzle. The integrated apparatus has a simple and compact structure, and high precision control. In addition, also provided is an exhaust gas post treatment system and a control method.

Description

[0001]This application claims the priority of Chinese patent application no. 201710042454.9 with invention title “Integrated apparatus, exhaust gas post-processing system, and control method”, filed on Jan. 20, 2017, the entire content of which is incorporated herein by reference.TECHNICAL FIELD[0002]The present invention relates to an integrated apparatus, an exhaust gas post-processing system and a control method, in the technical field of engine exhaust gas post-processing.BACKGROUND ART[0003]As emissions standards for internal combustion engine vehicles become ever more stringent, selective catalytic reduction (SCR) is generally used as a post-processing technology in the industry at present, with the injection of a urea solution into exhaust gas being installed upstream of the SCR, in order to reduce the amount of harmful substances such as nitrogen oxides in exhaust gas. The urea solution undergoes hydrolysis and pyrolysis to generate ammonia, which undergoes a chemical reacti...

Claims

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Application Information

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IPC IPC(8): F01N3/20F01N3/025F01N3/28F04C11/00F04C13/00F04C2/14
CPCF01N3/208F01N2610/144F01N2610/1486F01N3/28F01N2610/03F04C2/14F04C2240/30F01N2610/02F04C13/001F04C2210/1083F01N2610/146F01N3/0253F04C11/008F01N3/206F01N3/2066F01N2610/1453F01N2610/1433F04C2/18F04C11/005F04C2270/195F04C2270/185F04C2210/1044F04C15/0096F04C2240/808Y02T10/12
InventorYANG, ZHENQIUPENG, WEIBOCHEN, GUOLISONG, HONGWEIWANG, XUELIANGFAN, GAOFENG
OwnerTENNECO SUZHOU EMISSION SYST