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

Integrated pump and injector for exhaust after treatment

A technology of injector and integrated pump, which is applied in the direction of exhaust treatment, exhaust device, machine/engine, etc., can solve the problems of high cost, complexity, and additional, and achieve the effect of reduced power consumption and low pressurized volume

Inactive Publication Date: 2012-11-28
斯塔纳迪恩公司
View PDF5 Cites 36 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] It is well known in the industry that all SCR urea systems add significant cost and complexity to any vehicle platform

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
  • Integrated pump and injector for exhaust after treatment
  • Integrated pump and injector for exhaust after treatment
  • Integrated pump and injector for exhaust after treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] figure 1 is a schematic representation of a prior art airless system outlined in the Background section.

[0035] Urea solution is stored in storage tank 1 and passes through line 2 from where it enters pump 3 . The pump 3 is driven by an electric motor. The motor is driven and controlled by an electronic control unit (ECU) 13 to deliver sufficient volume through line 10 and into injector 46 . A substantially constant pressure is maintained in the line 10 and in the injector 46 by means of a regulator 45 which is either a separate component or integrated in the pump 3 . Injector 46 is electromagnetically operated and is controlled and powered by ECU 13 . The injector delivers an atomized urea solution into the engine exhaust 12 where the atomized urea solution can react with the SCR catalyst. The control of the injection quantity is determined by the operating frequency and duration of the injector opening. Storage tank 1 and lines 2 and 10 are heated to avoid free...

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 solution injection system and an injector with which urea solution or other exhaust treatment liquid from a source tank can be injected as an atomized spray into an exhaust pipe. A metering pump with integrated injection nozzle are contained in a common housing mounted directly to the exhaust pipe, thereby eliminating the separate electric motor driven pump, line between pump, and injector in conventional systems.

Description

Background technique [0001] Emission standards for vehicles with internal combustion engines continue to become more stringent. For on-highway or off-highway vehicles with diesel engines, a common exhaust aftertreatment to reduce NOx emissions is to use a Selective Catalytic Converter (SCR) in the tailpipe. The desired chemical reaction in the SCR can be promoted by injecting a urea solution into the exhaust pipe upstream of the SCR device. [0002] Usually, special filter traps or similar filter devices are also located in the exhaust pipe. Such devices must be periodically regenerated, commonly by injecting a hydrocarbon liquid into the exhaust gas stream, the combustion of which generates sufficient heat to regenerate the device. [0003] It would be desirable to provide similar injectors for use with SCR devices and filter devices. [0004] There are currently two known types of SCR urea systems in use. [0005] One system includes an air pump, a urea solution storage ...

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): F01N3/20
CPCF01N2610/1433F01N3/2066Y02T10/24F01N2610/02F01N2610/14F01N2610/144Y02T10/12
Inventor 马克·S·卡瓦纳罗伯特·G·卢卡斯叶夫根尼·诺尔金
Owner 斯塔纳迪恩公司
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