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

Urea injection components

A technology of urea injection and components, which is applied in the direction of pump components, engine components, variable capacity pump components, etc., can solve problems such as installation and positioning, and achieve the effect of solving installation and positioning

Active Publication Date: 2019-07-09
TENNECO SUZHOU EMISSION SYST
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the large number of sensors, how to install and position them is also a technical problem in the industry

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
  • Urea injection components
  • Urea injection components
  • Urea injection components

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] Please refer to Figure 1 to Figure 9 As shown, the present invention discloses a urea injection assembly 100, which includes a housing 1, a filter assembly 2 located in the housing 1, a pump assembly 3 for pumping urea solution, and a heating device with a heating and defrosting function. Component 4, and wire harness component 6, etc. In the illustrated embodiment of the present invention, the urea injection assembly 100 is applied in an air-assisted urea injection assembly, which includes a liquid circuit 101 (refer to Figure 4 shown by the solid arrow in ) and air path 102 (refer to Figure 4 indicated by the hollow arrow in ). It can be understood that the liquid path 101 and the gas path 102 finally converge to a nozzle (not shown) to spray atomized urea solution into the exhaust pipe to purify the exhaust gas. As for the way of converging the liquid path 101 and the gas path 102, there are generally two ways of internal mixing and external mixing, which are w...

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

A urea jetting assembly comprises a shell body, a harness assembly and a pump assembly. The pump assembly comprises a pump shell and a pump in the pump shell; the pump shell comprises a protruding portion extending upwards, and the protruding portion comprises a groove penetrating up and down, a stopping portion on one side of the groove and a second insert hole penetrating upwards; the shell body is provided with an installing boss, and the installing boss comprises a notch, a stopping wall located on the notch and a first insert hole located under the concaving opening; the harness assembly comprises a first pressure sensor installed on the protruding portion and a second pressure sensor installed on the installing boss; the first pressure sensor is clamped in the groove after rotation; and the second pressure sensor is clamped in the notch after rotation, installing and positioning of the sensors are achieved.

Description

technical field [0001] The invention relates to a urea injection assembly, which belongs to the technical field of aftertreatment of engine exhaust gas. Background technique [0002] Existing urea injection systems include air-assisted and non-air-assisted. Among them, the non-air-assisted urea injection system usually includes a pump, a filter, a metering nozzle connected to the pump, and several sensors. This kind of urea injection system often has very high requirements on the metering nozzle. Since the metering nozzle is installed on the exhaust pipe, it is easy to affect the metering accuracy due to the high temperature of the exhaust gas, and even be burned out by high temperature. In addition, the urea solution will freeze and expand in volume under cold conditions. Therefore, how to empty the residual urea solution in the system and reduce the risk of the system being damaged by freezing is also a problem that needs to be solved for this system. [0003] The air-as...

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): F01N3/28F01N13/18F04B53/16F04B53/08
Inventor 樊坚强童毅周林
Owner TENNECO SUZHOU EMISSION SYST
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