Supercharge Your Innovation With Domain-Expert AI Agents!

Vehicle-mounted catalytic converter abnormity diagnosis method and electronic equipment

A catalytic converter and abnormal diagnosis technology, which is applied in the field of abnormal diagnosis method of vehicle catalytic converter and electronic equipment, and can solve problems such as insufficient fault diagnosis of three-way catalytic converter

Active Publication Date: 2020-11-27
DONGFENG MOTOR CO LTD
View PDF10 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Based on this, it is necessary to provide a vehicle-mounted catalytic converter abnormal diagnosis method and electronic equipment for the technical problem that the existing technology has insufficient fault diagnosis for the three-way catalytic converter.

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
  • Vehicle-mounted catalytic converter abnormity diagnosis method and electronic equipment
  • Vehicle-mounted catalytic converter abnormity diagnosis method and electronic equipment
  • Vehicle-mounted catalytic converter abnormity diagnosis method and electronic equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] Such as figure 1 Shown is a working flow chart of a method for abnormal diagnosis of a vehicle-mounted catalytic converter according to an embodiment of the present invention, including:

[0084] Step S101, monitoring the oxygen storage capacity index of the input end of the on-board catalytic converter;

[0085] Step S102, if the oxygen storage capacity index satisfies a preset intervention condition, output an active operation instruction to the on-board catalytic converter;

[0086] Step S103, when the on-board catalytic converter executes the active operation instruction, obtain the oxygen storage time index of the on-board catalytic converter;

[0087] Step S104, if the oxygen storage time index satisfies a preset fault condition, it is judged that the on-board catalytic converter has an abnormal fault.

[0088] Specifically, this embodiment is applied to an automotive electronic control unit (Electronic Control Unit, ECU). Such as figure 2 As shown, the on-bo...

Embodiment 2

[0092] Such as image 3 Shown is a work flow chart of a method for diagnosing abnormality of a vehicle-mounted catalytic converter according to the second embodiment of the present invention, including:

[0093] Step S301, monitoring the oxygen absorption or oxygen release at the input end of the on-board catalytic converter within a preset test time.

[0094] Step S302, calculate the current test value OSCRAW of the oxygen storage capacity iIt is the sum of the amount of oxygen absorbed or released during the current test.

[0095] In one of the embodiments, the calculated oxygen storage capacity when the test value OSCRAW i It is the sum of the amount of oxygen absorbed or released during the current test, specifically including:

[0096] monitoring the rear oxygen output signal of the rear oxygen sensor at the output end of the on-board catalytic converter after the front oxygen output signal of the front oxygen sensor at the input end of the on-board catalytic converter...

Embodiment 4

[0175] like Figure 6 Shown is a schematic diagram of the hardware structure of an electronic device for abnormal diagnosis of a vehicle-mounted catalytic converter of the present invention, including:

[0176]at least one processor 601; and,

[0177] A memory 602 communicatively connected to at least one processor 601; wherein,

[0178] The memory 602 stores instructions that can be executed by at least one of the processors 601, and the instructions are executed by at least one of the processors 601, so that at least one of the processors 601 can:

[0179] Monitor the oxygen storage capacity index at the input of the on-board catalytic converter;

[0180] If the oxygen storage capacity index satisfies a preset intervention condition, then output an active operation instruction to the on-board catalytic converter;

[0181] When the on-board catalytic converter executes the active operation instruction, obtain the oxygen storage time index of the on-board catalytic converte...

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 discloses a vehicle-mounted catalytic converter abnormity diagnosis method and electronic equipment. The vehicle-mounted catalytic converter abnormity diagnosis method comprises the following steps: monitoring the oxygen storing capability index of the input end of a vehicle-mounted catalytic converter; if the oxygen storing capability index meets a preset intervention condition, outputting an active operation command to the vehicle-mounted catalytic converter; when the vehicle-mounted catalytic converter carries out the active operation command, obtaining the oxygen storing timeindex of the vehicle-mounted catalytic converter; and if the oxygen storing time index meets a preset failure condition, judging that the vehicle-mounted catalytic converter has an abnormity failure.According to the vehicle-mounted catalytic converter abnormity diagnosis method, passive observation type diagnosis does not affect the engine operating state; active intervention type diagnosis enters when a catalyst degrades only, and pollutant emission and oil consumption worsening are avoided under the normal state; and at the same time, the situation that normal halt cannot be realized whenan idled start-top vehicle is in the normal state is avoided, and oil consumption is improved.

Description

technical field [0001] The invention relates to the technical field related to automobiles, in particular to a method for diagnosing abnormality of a vehicle-mounted catalytic converter and electronic equipment. Background technique [0002] On-board catalytic converters are used to purify pollutants in automobile exhaust. For example, a three-way catalytic converter that purifies the three pollutants of hydrocarbons, carbon monoxide and nitrogen oxides. [0003] According to the requirements of emission regulations, automobiles need to diagnose the catalytic converter to determine whether the catalytic converter can be used normally. [0004] The current diagnosis of the catalytic converter adopts an active intrusive diagnosis. This diagnosis requires the engine to be turned on at idle speed. By sending instructions to the catalytic converter and judging the active intervention diagnostic index of the catalytic converter after receiving the command, the catalytic converter...

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): F01N11/00
CPCF01N11/00F01N11/007F01N2900/1624Y02T10/40
Inventor 刘勇军李华龙
Owner DONGFENG MOTOR 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