Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A urea injection control method, device and electronic equipment

A urea injection and control device technology, which is applied in the field of post-treatment, can solve the problems of reducing the tail gas treatment efficiency of the SCR system, reducing the service life and performance of the SCR system, and achieve the effect of improving the tail gas treatment efficiency and reducing the probability of urea crystallization

Active Publication Date: 2021-05-18
WEICHAI POWER CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a urea injection control method, device and electronic equipment to solve the problem that under low-speed and low-load conditions, the probability of urea crystallization in the SCR increases, and when the amount of urea crystallization in the SCR is large, the SCR will be reduced. The exhaust gas treatment efficiency of the system, and will reduce the service life and performance of the SCR system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A urea injection control method, device and electronic equipment
  • A urea injection control method, device and electronic equipment
  • A urea injection control method, device and electronic equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0060] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0061] National VI diesel engines have continuously increased emission requirements. In order to reduce the emission of nitrogen oxides and NOx in the exhaust gas, urea can be injected into the selective catalytic reduction technology SCR system, and the injected urea will chemically react with the NOx in the SCR system, thereby reducing the emission of NOx. emission.

[0062] However, under low speed and low load conditions, when a large amount of urea is inj...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a urea injection control method, device and electronic equipment. When urea injection is performed, when the preset urea multiple injection conditions are met, the urea corresponding to the total amount of urea injection is injected according to the determined urea injection times , each injection amount is a single urea injection amount calculated based on the total amount of urea injection and the number of urea injections, and the number of injections is the number of urea injections, that is, the present invention can use multiple urea injections under low-speed and low-load conditions Compared with the method of spraying urea once, the injection amount of a single injection is reduced, and the probability of injecting urea hitting a wall in the SCR system will be reduced. At the same time, the amount of single urea injection is reduced, and the urea evaporation needs The heat of the system will also be reduced, and the probability of urea crystallization will also be reduced, thereby improving the exhaust gas treatment efficiency of the SCR system, the service life and performance of the SCR system.

Description

technical field [0001] The present invention relates to the field of aftertreatment, and more specifically, relates to a urea injection control method, device and electronic equipment. Background technique [0002] National VI diesel engines have continuously increased emission requirements. In order to reduce the emission of nitrogen oxides and NOx in the exhaust gas, urea can be injected into the selective catalytic reduction technology SCR system, and the injected urea will chemically react with the NOx in the SCR system, thereby reducing the emission of NOx. emission. [0003] However, under low-speed and low-load conditions, the probability of urea crystallization in the SCR increases. When the amount of urea crystallization in the SCR is large, the exhaust gas treatment efficiency of the SCR system will be reduced, and the service life and performance of the SCR system will be reduced. Contents of the invention [0004] In view of this, the present invention provide...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F01N3/20
CPCF01N3/208F01N2570/14F01N2610/02Y02T10/12
Inventor 赵德财陈翠翠周龙魏京
Owner WEICHAI POWER CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com