SCR (selective catalyst reduction) jetting system

An injection system and nozzle technology, which is applied in mufflers, engine components, machines/engines, etc., can solve the problems of adding blue crystals to block the injection holes, and achieve the effect of reducing the cost of the whole vehicle, simplifying the structure and simple control.

Active Publication Date: 2012-07-18
湖北天雄科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, gas-assisted injection is used to improve the atomization effect by using the interaction of gas and liquid. The traditional atomization injection system uses liquid a

Method used

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  • SCR (selective catalyst reduction) jetting system
  • SCR (selective catalyst reduction) jetting system
  • SCR (selective catalyst reduction) jetting system

Examples

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Embodiment Construction

[0031] Such as figure 1 As shown, the SCR injection system of the present invention includes a blue tank, a delivery pump 24, a pressure accumulator chamber 15, a pressure regulating valve 18, an air storage tank 24, a nozzle 2, and an electronic control unit 3; Blue inlet; the output end of the pressure storage chamber 15 communicates with the blue inlet of the nozzle, and the output end of the air storage tank 24 communicates with the compressed air inlet of the nozzle. The pressure of the compressed air stored in the air storage tank 24 is 0.8-0.9 MPa, which is reduced to 0.4 MPa through the pressure reducing valve 25 , and the compressed air is connected to the nozzle 2 through the air solenoid valve 4 .

[0032] Tianlan tank includes a tank body 5, the top of the tank body 5 is provided with a pump body 10, and the pump body 10 is provided with a delivery pump 14, a pressure storage chamber 15 and a pressure regulating valve 18; the output end of the delivery pump 14 is c...

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PUM

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Abstract

The invention relates to an SCR (selective catalyst reduction) jetting system, which comprises an adblue tank, a conveying pump, a pressure storage cavity, a pressure regulating valve, an air storage tank and a nozzle. The nozzle comprises a compressed air inlet and an adblue inlet; an output end of the pressure storage cavity is communicated with the adblue inlet of the nozzle, and an output end of the air storage tank is communicated with the compressed air inlet of the nozzle; the adblue tank comprises a tank body, a pump body is arranged on the tank body, the conveying pump, the pressure storage cavity and the pressure regulating valve are disposed in the pump body, an input end of the conveying pump is communicated with the inside of the tank body, and an output end of the conveying pump is communicated with the pressure storage cavity; and a backflow end of the pressure storage cavity is communicated with the inside of the tank body via the pressure regulating valve. The tank body, the conveying pump, the pressure storage cavity and the pressure regulating valve are integrated, the structure of the SCR jetting system is simplified, arrangement of a total vehicle is more convenient, and cost of the total vehicle is reduced.

Description

technical field [0001] The invention relates to an exhaust purification system of an internal combustion engine, in particular to a selective catalytic reduction system (SCR injection system, Selective Catalyst Reduction) used for aftertreatment of diesel engine exhaust to reduce NOx emissions of diesel engines. Background technique [0002] For the emissions of motor vehicles, people use various methods to eliminate the harmful substances contained in them. SCR technology is a very effective way to reduce NOx compounds. The engine SCR post-treatment technology is to spray the reducing agent urea solution into the engine exhaust. Under the action of exhaust gas temperature and air flow, the urea solution can quickly decompose and release ammonia, and reduce NOx to nitrogen to achieve the effect of reducing NOx. Because urea solution has the advantages of stable performance, simple chemical reaction, and relatively small amount of reducing agent, it has been popularized and ...

Claims

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Application Information

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IPC IPC(8): F01N3/28
CPCY02A50/20
Inventor 吴君华吕再明高立志卢尧君
Owner 湖北天雄科技股份有限公司
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