Check patentability & draft patents in minutes with Patsnap Eureka AI!

Monitoring method and system for three-way catalyst conversion efficiency

A three-way catalyst and conversion efficiency technology, applied in the field of vehicles, can solve the problems of inaccurate judgment of the conversion efficiency of the three-way catalyst, and achieve the effects of improving robustness, improving discrimination and improving accuracy

Active Publication Date: 2021-08-10
WEICHAI POWER CO LTD
View PDF7 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to at least solve the problem of inaccurate judgment of the conversion efficiency of the three-way catalytic converter in the prior art

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
  • Monitoring method and system for three-way catalyst conversion efficiency
  • Monitoring method and system for three-way catalyst conversion efficiency
  • Monitoring method and system for three-way catalyst conversion efficiency

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0073] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0074] It should be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may also be meant to include the plural forms unless the context clearly dictates otherwise. The terms "comprising", "comprising", "containing" and "having" are inclusive and thus indicate the presence of stated...

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 belongs to the technical field of vehicles, and particularly relates to a monitoring method and system for three-way catalyst conversion efficiency. The monitoring method comprises the following steps: calculating oxygen storage amount of each driving cycle; judging effectiveness of the oxygen storage amount; judging conversion efficiency of the three-way catalyst according to the effectiveness of the oxygen storage amount; and judging that the three-way catalyst has faults if the conversion efficiency is lower than preset conversion efficiency. According to the monitoring method for the three-way catalyst conversion efficiency provided in the embodiments of the invention, in a vehicle operation process, the oxygen storage mount in each driving cycle is calculated, and conversion efficiency of the three-way catalyst within the current driving cycle is judged according to the oxygen storage amount. Effectiveness further needs to be judged for the oxygen storage amount within each driving cycle, so that accuracy of oxygen storage amount calculating results is improved, and thus, judgment robustness for the conversion efficiency of the three-way catalyst is further improved; and compared with the prior art, the distinguishing degree of a normal three-way catalyst and a bad three-way catalyst is improved.

Description

technical field [0001] The invention belongs to the technical field of vehicles, and in particular relates to a method and system for monitoring conversion efficiency of a three-way catalytic converter. Background technique [0002] This section provides background information related to the present disclosure only and is not necessarily prior art. [0003] The three-way catalytic converter (Three-Way-Catalyst) can convert harmful gases such as CO, HC and NOx emitted from automobile exhaust into harmless carbon dioxide, water and nitrogen through oxidation and reduction. As an important external purification device, if the three-way catalytic converter is aging, it will seriously affect the treatment effect of automobile exhaust, making the vehicle unable to meet the increasingly stringent emission regulations. [0004] The judgment of the conversion efficiency of the three-way catalytic converter in the prior art has the following technical problems: the enabling condition...

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): F01N11/00
CPCF01N11/00F01N2550/02F01N2560/025Y02T10/40
Inventor 李亮唐志刚王佳兴孙丰山王凯
Owner WEICHAI POWER CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com