Diesel engine aftertreatment device and SCR front exhaust gas temperature control system thereof

A post-processing device and exhaust temperature technology, which is applied to the electric control of exhaust treatment devices, exhaust treatment, noise reduction devices, etc., can solve the problem of high exhaust temperature and achieve good and accurate cooling effects

Pending Publication Date: 2018-11-06
HENAN UNIV OF SCI & TECH
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a diesel engine post-processing device and its exhaust temperature control system before SCR to solve the current problem of excessive exhaust temperature after DPF 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
  • Diesel engine aftertreatment device and SCR front exhaust gas temperature control system thereof
  • Diesel engine aftertreatment device and SCR front exhaust gas temperature control system thereof
  • Diesel engine aftertreatment device and SCR front exhaust gas temperature control system thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] figure 2 It is a connection schematic diagram of the diesel engine aftertreatment device of the present invention, as shown in the figure: the device includes DOC, DPF, exhaust temperature control system before SCR and SCR connected in sequence.

[0019] The exhaust temperature control system before the SCR includes a cooling channel for connecting the DPF and the SCR. The cooling channel is provided with a water spray hole, and a water sprayer 1 is installed on the water spray hole; the water spray pipeline of the water sprayer 1 is connected with a metering pump in sequence. 2. The water tank 3 is provided with gaskets at each joint; the metering pump 2 is connected to the control device 5; the water temperature sensor 4 is set i...

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 diesel engine aftertreatment device and an SCR front exhaust gas temperature control system thereof and belongs to the technical field of internal combustion engine aftertreatment. The SCR front exhaust gas temperature control system comprises a cooling passage connected with a DPE and an SCR; a water spraying hole is formed in the cooling passage; and a water sprayer is mounted on the water spraying hole. According to the SCR front exhaust gas temperature control system, the cooling passage is connected with the DPE and the SCR; the water sprayer is utilized to cool the exhaust gas temperature after DPE regeneration; as the water sprayer can conveniently control the water yield, precise cooling is realized through controlling the water spraying quantity; and moreover, the sprayed water can be fully and efficiently in contact with the exhaust gas, so that the cooling effect is excellent.

Description

technical field [0001] The invention relates to a diesel engine aftertreatment device and an exhaust gas temperature control system before SCR, belonging to the technical field of internal combustion engine aftertreatment. Background technique [0002] As the requirements of emission regulations become stricter, the after-treatment devices of diesel engines are more and more widely used. The after-treatment devices of diesel engines include DOC (oxidation catalytic converter), DPF (particulate filter), SCR (selective catalytic reduction technology), etc. These are in turn connected in series in the diesel exhaust system. Among them, DPF is used to reduce engine particulate (PM) emissions. After the DPF has been used for a period of time, the particles adhere to the surface of the DPF, which affects the exhaust flow, increases fuel consumption, and deteriorates the economy of the diesel engine. At this time, it is necessary to remove the PM accumulated on it through the DPF ...

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
IPC IPC(8): F01N3/04F01N3/20F01N9/00F01N13/00
CPCF01N3/04F01N3/2046F01N9/00F01N13/009Y02T10/12Y02T10/40
Inventor 李民张振方刘建新杜慧勇王站成苗家轩徐斌
Owner HENAN UNIV OF SCI & TECH
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