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Integrated device, exhaust-gas aftertreatment system, and control method

a technology of exhaust gas aftertreatment and integrated devices, which is applied in the direction of engine components, mechanical equipment, machines/engines, etc., can solve the problems of high cost and difficult installation, and achieve the effects of improving control precision, simplifying and compact structure, and greatly facilitating installation by customers

Inactive Publication Date: 2019-09-26
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 device that combines a pump and nozzle, with a simple and compact structure that is easy to install. By integrating a urea pump and nozzle, the device can control the injection of urea to nitrogen oxides, reducing the risk of crystallization. Additionally, the pressure sensor is realized by an enclosure, allowing for a smaller size of the device.

Problems solved by technology

In addition, a conventional urea injection system comprises a large number of components, and consequently is difficult to install and high-cost.

Method used

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  • Integrated device, exhaust-gas aftertreatment system, and control method
  • Integrated device, exhaust-gas aftertreatment system, and control method
  • Integrated device, exhaust-gas aftertreatment system, and control method

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Embodiment Construction

[0115]As shown in FIG. 1, the present invention discloses an exhaust-gas aftertreatment system 100 that can be used to treat the exhaust of the engine 10, thereby reducing the emission of harmful substances to meet the requirements of emission regulations. The exhaust-gas aftertreatment system 100 comprises an exhaust-gas aftertreatment injection system 200 and an exhaust-gas aftertreatment housing system 300, wherein the injection system 200 comprises an integrated device 1 for pumping a urea solution from the urea tank 201 (see the arrow X) and injecting the urea solution into the exhaust of the engine 10 (for example, into the exhaust pipe 106 or the housing system 300); the housing system 300 comprises a mixer 301 located downstream of the integrated device 1 and a carrier 302 located downstream of the mixer 301. Certainly, in some embodiments, it is also possible not to provide a mixer, or to provide two or more mixers. The carrier 302 can be, for example, a selective catalytic...

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Abstract

An integrated device comprises a pump assembly and a nozzle assembly. The pump assembly has an accommodation compartment for accommodating the nozzle assembly, a pump assembly housing, and a pump. The pump assembly housing has an inlet passage and an outlet passage. The outlet passage is in communication with the nozzle assembly. The pump assembly comprises an enclosure; a motor coil for driving the pump; a magnetic body; a first gear assembly; and a second gear assembly. The first gear assembly and the second gear assembly mesh with each other. The nozzle assembly comprises a nozzle assembly housing, nozzle and a nozzle coil for driving the nozzle. The integrated device includes a pressure sensor that does not have an independent housing. The enclosure serves as a housing of the pressure sensor. The integrated device has a simple and compact structure, and facilitates realization of downsizing of the device. Also disclosed are an exhaust-gas aftertreatment system and a control method.

Description

[0001]This application is a request for the priority of the Chinese patent application with the filing date of Jun. 6, 2016, application number of 201610392925.4, and title of invention of “Integrated Device, Exhaust-Gas Aftertreatment System, and Control Method”, the whole content of which is incorporated in this application by reference.TECHNICAL FIELD[0002]The present invention relates to an integrated device, an exhaust-gas aftertreatment system, and a control method, belonging to the technical field of engine exhaust-gas aftertreatment.BACKGROUND ART[0003]With the increasingly stringent emission standards of vehicles using internal combustion engines, in order to reduce the emission of harmful substances such as nitrogen oxides, selective catalytic reduction (SCR) is commonly used as the aftertreatment technology in the industry, and urea solutions are injected into the exhaust gas upstream of the SCR. A urea solution is hydrolyzed and pyrolyzed to produce ammonia and reacts wi...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F01N3/20
CPCF01N2610/148F01N3/208F01N2610/02F01N2610/146F01N2610/144F01N3/206F01N3/2073F01N2610/1453F01N2610/1486F01N2610/1473F01N2610/1433F01N2610/03F01N3/28F01N9/00Y02T10/12Y02T10/40F01N3/2066
Inventor WANG, XUELANGFAN, GAOFENGYANG, ZHENQIUPENG, WEIBOSONG, HONGWEICHEN, GUOLI
Owner TENNECO SUZHOU EMISSION SYST
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