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Urea pump control system, tail gas purifying system and working method

A control system and urea pump technology, applied in the field of vehicle purification, can solve the problems of difficulty in heating and thawing, occupying a large space for layout, increasing the control complexity of the SCR system and hardware application costs, etc.

Inactive Publication Date: 2019-02-26
南京蔚岚环境技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the domestic market, the existing urea pump and the urea tank are mostly installed independently and separately. The urea pump and the urea tank are connected by a suction pipeline and a return pipeline. The pipeline connection method is complicated and occupies a large space for layout; The independent installation form of the urea solution tank increases the heating control requirements of the system for the suction pipeline and the return pipeline, and increases the control complexity and hardware application cost of the SCR system; the urea solution pump and the urea solution tank are installed independently, and the urea solution pipeline is often exposed outside. There is a risk of difficult heating and thawing when heating in winter, and it also increases system power consumption

Method used

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  • Urea pump control system, tail gas purifying system and working method
  • Urea pump control system, tail gas purifying system and working method
  • Urea pump control system, tail gas purifying system and working method

Examples

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Embodiment 1

[0027] figure 1 It is a functional block diagram of the urea pump control system of the present invention.

[0028] In this example, if figure 1 As shown, this embodiment provides a urea pump control system, which includes: an instruction acquisition module, a processing unit, and a urea pump drive module controlled by the processing unit; wherein the instruction acquisition module is suitable for obtaining the urea pump injection instruction, and send the urea pump injection instruction to the processing unit; and the processing unit is adapted to control the urea pump driving module to drive the urea pump to work according to the urea pump injection instruction.

[0029] In this embodiment, the function of automatically controlling the urea pump to purify vehicle exhaust is realized by acquiring the injection command of the urea pump and driving the urea pump to work by the processing unit according to the injection command of the urea pump.

[0030] figure 2 is the pin ...

Embodiment 2

[0058] On the basis of Embodiment 1, this embodiment provides a vehicle exhaust gas purification system, which includes: a urea tank, a urea pump body with a built-in urea pump control system; the urea tank is suitable for storing urea solution, the The main body of the urea pump is arranged at the bottom of the urea tank, and the control system of the urea pump is suitable for controlling the main body of the urea pump to draw the urea solution in the urea tank to spray vehicle exhaust.

[0059] In this embodiment, by arranging the main body of the urea pump at the bottom of the urea tank, the urea solution can flow into the liquid inlet of the urea pump by virtue of the gravity of the urea solution itself, reducing the urea suction pipe and reducing the amount of urea. The return pipe reduces the complexity and hardware application cost of the vehicle exhaust gas purification system; facilitates the connection between the urea pump and the urea tank, and reduces the layout sp...

Embodiment 1 and Embodiment 2

[0063] In combination with Embodiment 1 and Embodiment 2, this embodiment also provides a working method of a urea pump control system, which includes: acquiring a urea pump injection instruction; and injecting urea solution according to the urea pump injection instruction.

[0064] Further, the urea pump control system includes: an instruction acquisition module, a processing unit, and a urea pump drive module controlled by the processing unit; wherein the instruction acquisition module is adapted to acquire the urea pump injection instruction, and send the urea pump to The injection instruction is sent to the processing unit; and the processing unit is adapted to control the urea pump driving module to drive the urea pump to work according to the urea pump injection instruction.

[0065] The instruction acquiring module, the processing unit, and the urea pump driving module have all been clearly described in the above-mentioned embodiments.

[0066] In this embodiment, after...

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Abstract

The invention relates to a urea pump control system, a tail gas purifying system and a working method. The urea pump control system comprises an instruction acquisition module, a processing unit and aurea pump driving module controlled by the processing unit, wherein the instruction acquisition module is suitable for acquiring a urea pump injection instruction and sending the urea pump injectioninstruction to the processing unit; the processing unit is suitable for controlling the urea pump driving module to drive a urea pump to work according to the urea pump injection instruction. The ureapump injection instruction is acquired and the processing unit drives the urea pump to work according to the urea pump injection instruction, so that the function of automatically controlling the urea pump to purify tail gas of a vehicle is achieved.

Description

technical field [0001] The invention relates to the field of vehicle purification, in particular to a urea pump control system, an exhaust gas purification system and a working method. Background technique [0002] In recent years, my country's diesel vehicle exhaust emission standards have been continuously upgraded and implemented, and more and more diesel vehicles have begun to use SCR systems to detect nitrogen oxides (NO x ) emission control. The urea pump is the core component of the SCR system, responsible for the main work of urea injection metering. [0003] In the domestic market, the existing urea pump and the urea tank are mostly installed independently and separately. The urea pump and the urea tank are connected by a suction pipeline and a return pipeline. The pipeline connection method is complicated and occupies a large space for layout; The independent installation form of the urea solution tank increases the heating control requirements of the system for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/56
CPCB01D53/8631B01D53/8696B01D2251/2067B01D2251/2062
Inventor 熊飘洋田雨林李科庞建云
Owner 南京蔚岚环境技术研究院有限公司