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

Exhaust after treatment device mode regulation

a treatment device and exhaust mode technology, applied in the direction of exhaust treatment, electrical control, mechanical equipment, etc., can solve the problems of increasing the back pressure of the exhaust, oxidising the carbon based soot and burning it off, and heating the air intake requires additional fuel, so as to achieve the effect of regulating more precisely and efficiently

Inactive Publication Date: 2014-05-15
PERKINS ENGINES
View PDF5 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a system for controlling the temperature of an exhaust treatment device for an engine system. The system includes a controller and valves to adjust the pressure of the engine system. By regulating the pressure difference using the valves, the controller can control the temperature of the exhaust treatment device to better manage its mode of operation. This allows for more precise and efficient regulation of the exhaust treatment device.

Problems solved by technology

However, after prolonged use, the DPF may become clogged or ineffective, leading again to higher exhaust emissions or an increase in exhaust back pressure.
Raising the temperature further may oxidise the carbon based soot and burn it off.
However, heating the air intake requires additional fuel and decreases efficiency.
Furthermore, this does not provide very much control over the exhaust gas temperature or 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
  • Exhaust after treatment device mode regulation
  • Exhaust after treatment device mode regulation
  • Exhaust after treatment device mode regulation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017]Exhaust after treatment devices (EATD) may have several modes of operation including warm-up modes, normal operation modes and regeneration modes. Various parameters may be used to determine when and how to change an EATD mode. For example, a soot sensor may detect when too much soot has built up on a diesel particulate filter (DPF), which is one type of EATD. A differential pressure sensor across the DPF may also be used to determine if the DPF has become clogged and requires regeneration. Regeneration of an EATD may occur during periods of high engine load, which consequently result in elevated exhaust temperatures. However, should the EATD require regeneration during extended idle periods or when the engine is not under load, as detected by monitoring engine speed and fuel delivery, for example, then this information may be used to arrive at a decision whether or not to assist in the regeneration process and so change the EATD mode from normal operation mode to one of perha...

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

Method and system for controlling the temperature dependent mode of an exhaust after treatment device, EATD, within an engine system comprising: identifying a target EATD mode. Regulating an EATD temperature to within a temperature range corresponding with the target mode by controlling a gas pressure difference of the engine system between a first location and a second location.

Description

TECHNICAL FIELD[0001]The present disclosure relates to a method and system for regulating exhaust after treatment device modes of operation.BACKGROUND[0002]Internal combustion engines and diesel engines in particular, produce a number of waste products emitted from their exhaust systems. These waste products include gases such as nitrogen oxides and carbon monoxide, solid particulate matter including soot as well as unburned or partially burned fuel in the form of hydrocarbons. In order to reduce exhaust emissions, exhaust after treatment devices (EATD) and systems may be employed. These may include diesel particulate filters (DPF) that remove portions of the exhaust emissions before leaving an engine system in to the atmosphere and selective catalytic reduction systems.[0003]A DPF may include several components for removing multiple different types of waste products. For example, the DPF may act as a physical filter for trapping soot particles, a catalyst may be utilised to absorb ...

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(United States)
IPC IPC(8): F01N3/10
CPCF01N3/10F02D41/0245F02D41/027F02D2200/0802F01N3/208F01N9/00F01N3/023Y02T10/12Y02T10/40F01N9/002
Inventor EAGER, ANTONY JAMESFARMAN, ALISTAIR CHARLES
Owner PERKINS ENGINES
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