Control method and device for preventing regeneration and sintering of particle catcher

A particle trap, oxidation catalyst technology, applied in the direction of muffler, exhaust device, electronic control of exhaust treatment device, etc., can solve the problems of small exhaust flow, failure, no exhaust flow, etc.

Active Publication Date: 2013-04-03
WEICHAI POWER CO LTD
View PDF4 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the above scheme, in the initial stage of active regeneration of DPF, if sudden stop or sudden drop of engine speed and idle speed occur due to various uncontrollable factors, at the same time, active regeneration will increase the internal exhaust temperature of DPF to the passive regeneration temperature of 300°C to 500°C. After the DPF enters passive regeneration, if there is a lot of carbon deposit inside the DPF, it may be because there is no exhaust flow or the exhaust flow is too small, and the temperature of the DPF after passive regeneration is too high, resulting in DPF sintering, resulting in permanent failure of regeneration

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
  • Control method and device for preventing regeneration and sintering of particle catcher
  • Control method and device for preventing regeneration and sintering of particle catcher
  • Control method and device for preventing regeneration and sintering of particle catcher

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0054] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. 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.

[0055] In order to meet the requirements of exhaust emission standards, traps are usually placed in the exhaust emission part of automobiles to trap tiny particles in the exhaust gas. The defect of this method is that the exhaust gas emission channels will gradually be blocked with the accumulation of trapped particles. . Active regeneration...

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 discloses a control method for preventing regeneration and sintering of a particle catcher. The method comprises the following steps: acquiring regeneration related parameters of the particle catcher, wherein the regeneration related parameters comprise inlet temperature of an oxidation catalyst, outlet temperature of the oxidation catalyst, outlet temperature of the particle catcher, pressure difference of the particle catcher and air speed of the oxidation catalyst; increasing or decreasing the fuel injection quantity required by regeneration of the particle catcher according to the acquired regeneration related parameters; and injecting fuel according to the adjusted fuel injection quantity. The invention further discloses a control device for preventing regeneration and sintering of the particle catcher.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to a control method and device for preventing regeneration and sintering of a particle trap. Background technique [0002] With the increasingly serious energy crisis and environmental pollution, people gradually realize that improving the technical level of diesel engines is one of the most effective and economical means to maintain mass production of automobiles at low cost and to solve the dual pressures of environmental protection and energy saving. [0003] The harmful components of diesel engine exhaust are mainly carbon monoxide (CO), hydrocarbons (HC), nitrogen oxides (NOx), sulfides, particulate matter and odor, etc. Among them, the emission of NOx and particulate matter is more, especially the emission of particulate matter Much higher than other types of vehicles, some tests have shown that diesel engine particulate emissions are dozens of times that of gasoline...

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 Applications(China)
IPC IPC(8): F01N9/00F01N3/025
CPCY02T10/47Y02T10/40
Inventor 王奉双邓玉龙张建华王意宝冯海浩张军苗垒
Owner WEICHAI POWER CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap