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Urea solution spray electronic controller of selectively catalytic reduction system

An electronic controller and selective catalysis technology, which is applied to the electronic control of exhaust treatment devices, machines/engines, exhaust treatment, etc., can solve the problems of large changes in environmental conditions, high requirements for injection accuracy, and small injection of urea. , to achieve the effect of wide application range, high injection precision and stable pressure

Active Publication Date: 2011-02-09
WUXI WEIFU LIDA CATALYTIC CONVERTER
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This controller is not suitable for places or equipment where the use occasion is not fixed, the use environment conditions change greatly, the amount of sprayed urea is small, and the spraying accuracy is high.

Method used

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  • Urea solution spray electronic controller of selectively catalytic reduction system
  • Urea solution spray electronic controller of selectively catalytic reduction system
  • Urea solution spray electronic controller of selectively catalytic reduction system

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0012] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0013] Such as figure 1 As shown: the present invention is composed of a sensor module 1 , a control module 2 , an actuator drive module 3 , a communication module 4 and a power supply module 5 .

[0014] The engine cooling water temperature sensor module 7 in the sensor module 1, the engine speed sensor module 8, the gas pedal position sensor module 9, the engine exhaust temperature sensor module 10, the urea solution pressure sensor module 11, the urea solution temperature sensor module 12 and The output end of the urea tank urea liquid level sensor module 13 is connected to the input end of the control module 2. The control module 2 is a single-chip microcomputer. The control module 2 calculates the signal input by the sensor module 1 and outputs it after comparative judgment. The output end of the control module 2 is connected to the input end of the urea ...

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Abstract

The invention relates to a controller, in particular to a urea solution spray electronic controller of a selectively catalytic reduction system. According to the technical scheme provided by the invention, the urea solution spray electronic controller of the selectively catalytic reduction system comprises a sensor module, a control module, an actuator drive module, a communication module and a power supply module, wherein the output end of the sensor module is connected with the input end of the control module; the output end of the control module is connected with the input ends of a urea solution nozzle driving circuit, a urea solution hydraulic pump driving circuit, a urea solution heating device and a urea tank liquid level alarm driving circuit in the actuator driving module; the output end of the power supply module is connected with the power supply ends of the control module and the sensor modules respectively; and the control module and the communication module are mutually connected. The controller can accurately control the spray amount of urea and has high spray accuracy and high adaptability.

Description

technical field [0001] The invention relates to a controller, in particular to an electronic controller for injecting urea solution in a selective catalytic reduction system. Background technique [0002] At present, the urea solution injection electronic controller is used to control the injection volume of urea solution in thermal power plants. Due to the large injection volume of urea, the injection accuracy is not high, the application occasion is fixed, the environmental conditions of use do not change much, and the control function is simple. This controller is not suitable for places or equipment where the use occasion is not fixed, the use environment conditions change greatly, the amount of urea injection is small, and the injection accuracy is high. Contents of the invention [0003] The object of the present invention is to overcome the deficiencies in the prior art, and provide an electronic controller for urea solution injection in a selective catalytic reduct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N9/00F01N3/20
CPCY02T10/47Y02T10/24Y02T10/12Y02T10/40
Inventor 温任林沈卫东
Owner WUXI WEIFU LIDA CATALYTIC CONVERTER
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