CN112901324A - Particle catcher carrier high-temperature burning detection method, system and diagnosis equipment - Google Patents
Particle catcher carrier high-temperature burning detection method, system and diagnosis equipment Download PDFInfo
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- CN112901324A CN112901324A CN202110086699.8A CN202110086699A CN112901324A CN 112901324 A CN112901324 A CN 112901324A CN 202110086699 A CN202110086699 A CN 202110086699A CN 112901324 A CN112901324 A CN 112901324A
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- Prior art keywords
- temperature
- carrier
- temperature difference
- difference accumulation
- particle catcher
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
- F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Processes For Solid Components From Exhaust (AREA)
Abstract
The invention provides a method, a system and a diagnosis device for detecting the high-temperature burning of a particle catcher carrier, which can automatically detect the high-temperature burning of the particle catcher carrier in real time through the change condition of temperature difference accumulation of the particle catcher carrier, do not depend on flow resistance, are convenient and accurate, realize the timely replacement of the carrier, ensure that the PM amount meets the regulation requirement of national VI emission, and improve the use safety of vehicles.
Description
Technical Field
The invention belongs to the technical field of vehicle diagnosis, and particularly relates to a particle catcher carrier high-temperature burning detection method, a particle catcher carrier high-temperature burning detection system and particle catcher carrier high-temperature burning detection diagnostic equipment.
Background
Automobile particulate filter (DPF) is a device that is arranged in filtering the engine exhaust solid particle (mainly for the soot), and after air current and soot entering DPF, because the export is stifled, the air current flows from the inner wall to holding back soot inside DPF, playing the effect of collecting the soot, purification efficiency is high more than 85%, plays the purpose that reduces PM and discharges. The DPF filters and collects particulates from the exhaust gas when the engine is in a normal operating mode. After a certain amount of soot in the DPF is reached, the ECU is required to control the exhaust temperature of the engine to burn off the accumulated soot for DPF regeneration so that the DPF can continuously collect the particulates in the exhaust gas.
However, once the carrier is burned out, the DPF has no capacity for treating the exhaust, and the PM is discharged into the atmosphere in a large amount, resulting in environmental pollution. Therefore, how to detect that the carrier is burnt out and then replace the carrier in time is very important.
At present, the method for detecting the burning of the DPF carrier mainly utilizes the flow resistance (pressure difference/gas flow) of the carrier to judge, when the carrier is burnt, the honeycomb structure of the carrier is damaged, and the flow resistance is smaller than that of a normal carrier. However, because the change of the carrier flow resistance under different working conditions is extremely large and has no obvious law, the test is needed under a plurality of working conditions, whether each working condition point is burnt or not is judged independently after the flow resistance and the working condition point MAP are drawn, and the workload is huge and inaccurate.
Disclosure of Invention
Based on the above, a method, a system and a diagnostic device for detecting the high-temperature burnout of the particle catcher carrier are provided.
In order to solve the technical problems, the invention adopts the following technical scheme:
on the one hand, the method for detecting the high-temperature burning-out of the carrier of the particle catcher comprises the following steps:
s101, monitoring the front temperature and the rear temperature of a carrier of the particle catcher, and calculating the temperature difference accumulation: the temperature difference accumulation is front temperature-rear temperature;
s102, if the temperature difference accumulation sequentially occurs in the following three conditions, the particle catcher carrier is burnt at a high temperature:
case 1: the temperature difference accumulation is greater than 0;
case 2: the temperature difference accumulation is less than 0;
case 3: the temperature differential accumulation is greater than that of case 2 and less than that of case 1.
In another aspect, a particle trap carrier high-temperature burnout detection system is provided, which includes a storage module, where the storage module includes instructions loaded and executed by a processor, and when the instructions are executed, the processor executes the above-mentioned particle trap carrier high-temperature burnout detection method.
In still another aspect, a diagnostic apparatus is provided having a particle trap carrier high temperature burnout detection system as described above.
The invention can automatically detect the high-temperature burning of the particle catcher carrier in real time through the change condition of temperature difference accumulation of the particle catcher carrier, does not depend on flow resistance, is convenient and accurate, realizes timely carrier replacement, ensures that the PM amount meets the national VI emission regulation requirement, and improves the use safety of vehicles.
Drawings
The invention is described in detail below with reference to the following figures and detailed description:
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic diagram of the present invention;
FIG. 3 is a schematic diagram illustrating the temperature difference accumulation when the particle catcher carrier of the present invention is not burned out during normal operation;
FIG. 4 is a schematic diagram illustrating the temperature difference accumulation when the particle catcher carrier is burned out according to the present invention;
FIG. 5 is a schematic diagram illustrating the temperature difference accumulation after the particle catcher carrier is burned out.
Detailed Description
As shown in fig. 1, an embodiment of the present disclosure provides a method for detecting a high-temperature burnout of a particle trap carrier, including:
s101, monitoring the front temperature and the rear temperature of a carrier of the particle catcher, and calculating the temperature difference accumulation: the temperature difference is accumulated as front temperature-rear temperature.
S102, if the temperature difference accumulation sequentially occurs in the following three conditions, the carrier of the particle catcher is burnt at a high temperature:
case 1: the temperature difference accumulation is greater than 0.
Case 2: the temperature difference accumulation is less than 0.
Case 3: the temperature differential accumulation is greater than that of case 2 and less than that of case 1.
Otherwise, the carrier of the particle catcher is not burnt out at high temperature and can be continuously used.
As shown in fig. 3, when the carrier of the particulate trap is not burned out during normal operation, there will be a certain heat loss (mainly caused by the honeycomb structure of the carrier) when the exhaust gas passes through the carrier, and at this time, the temperature after the carrier will be lower than the temperature before the carrier, and the temperature difference accumulation will be greater than 0; as shown in FIG. 4, when the carrier is burnt out, the temperature before the carrier is lower than the temperature after the carrier due to the heat release caused by the burning out of the carrier, and the temperature difference accumulation is temporarily lower than 0; as shown in fig. 5, after the carrier is burned out, the particle trap is regarded as an empty carrier, the processing capacity for exhaust is lost, the heat loss of exhaust gas through the particle trap is reduced, the temperature difference accumulation at this time is smaller than the temperature difference accumulation when the carrier is not burned out in normal operation, but larger than the temperature difference accumulation when the carrier is burned out, therefore, after the temperature difference accumulation is monitored to sequentially occur, the carrier can be judged to be burned out, the carrier can be timely replaced, and the capability of filtering PM is kept.
In the present embodiment, as shown in fig. 2, the vehicle ECU monitors the front temperature and the rear temperature of the particulate trap carrier and calculates the temperature difference accumulation, and accordingly, in step S102, the diagnostic device may obtain the temperature difference accumulation in real time from the vehicle ECU through the OBD port, and then determine whether the particulate trap carrier is burnt.
Wherein the vehicle ECU can monitor the front temperature as well as the rear temperature by means of two temperature sensors arranged on both sides of the particle trap carrier.
Based on the same inventive concept, embodiments of the present specification further provide a particle trap carrier high-temperature burnout detection system, which includes a storage module, where the storage module includes instructions loaded and executed by a processor, and the instructions, when executed, cause the processor to execute the steps according to the various exemplary embodiments of the present invention described in the above-mentioned particle trap carrier high-temperature burnout detection method section of the present specification.
The memory module may include a readable medium in the form of a volatile memory unit, such as a random access memory unit (RAM) and/or a cache memory unit, and may further include a read only memory unit (ROM).
Program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., through the internet using an internet service provider).
Based on the same inventive concept, the embodiments of the present disclosure further provide a diagnostic apparatus having the above system for detecting the high-temperature burnout of the particle catcher carrier, which is not described herein again in detail.
However, those skilled in the art should realize that the above embodiments are illustrative only and not limiting to the present invention, and that changes and modifications to the above described embodiments are intended to fall within the scope of the appended claims, provided they fall within the true spirit of the present invention.
Claims (5)
1. A high-temperature burnout detection method for a particle catcher carrier is characterized by comprising the following steps:
s101, monitoring the front temperature and the rear temperature of a carrier of the particle catcher, and calculating the temperature difference accumulation: the temperature difference accumulation is front temperature-rear temperature;
s102, if the temperature difference accumulation sequentially occurs in the following three conditions, the particle catcher carrier is burnt at a high temperature:
case 1: the temperature difference accumulation is greater than 0;
case 2: the temperature difference accumulation is less than 0;
case 3: the temperature differential accumulation is greater than that of case 2 and less than that of case 1.
2. The method as claimed in claim 1, wherein the vehicle ECU monitors the front temperature and the rear temperature of the particle trap carrier and calculates the temperature difference accumulation.
3. The method for detecting high-temperature burnout of a particle trap carrier as claimed in claim 2, wherein said step S102 further comprises:
obtaining the temperature difference accumulation in real time from the vehicle ECU.
4. A particle trap carrier high-temperature burnout detection system, comprising a storage module including instructions loaded and executed by a processor, the instructions when executed causing the processor to perform a particle trap carrier high-temperature burnout detection method according to any one of claims 1-3.
5. A diagnostic apparatus having a particle trap carrier high temperature burnout detection system as claimed in claim 4.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110086699.8A CN112901324A (en) | 2021-01-22 | 2021-01-22 | Particle catcher carrier high-temperature burning detection method, system and diagnosis equipment |
| PCT/CN2021/101464 WO2022156134A1 (en) | 2021-01-22 | 2021-06-22 | Method and system for detecting high-temperature burnout of particulate filter carrier, and diagnostic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110086699.8A CN112901324A (en) | 2021-01-22 | 2021-01-22 | Particle catcher carrier high-temperature burning detection method, system and diagnosis equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112901324A true CN112901324A (en) | 2021-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110086699.8A Pending CN112901324A (en) | 2021-01-22 | 2021-01-22 | Particle catcher carrier high-temperature burning detection method, system and diagnosis equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112901324A (en) |
| WO (1) | WO2022156134A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022156134A1 (en) * | 2021-01-22 | 2022-07-28 | 上海星融汽车科技有限公司 | Method and system for detecting high-temperature burnout of particulate filter carrier, and diagnostic device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101006254A (en) * | 2004-06-21 | 2007-07-25 | 丰田自动车株式会社 | Method of determining abnormality in particulate filter |
| CN101466922A (en) * | 2006-06-16 | 2009-06-24 | 丰田自动车株式会社 | PM trapper failure detection system |
| CN102105663A (en) * | 2008-07-25 | 2011-06-22 | 丰田自动车株式会社 | Catalyst deterioration diagnosis system and method for internal combustion engine |
| JP2013002366A (en) * | 2011-06-16 | 2013-01-07 | Bosch Corp | Failure diagnosing device for differential pressure sensor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012022153B4 (en) * | 2012-11-10 | 2019-01-24 | Volkswagen Aktiengesellschaft | Method for regeneration of at least one particle filter, control device and motor vehicle with such a |
| JP2015151869A (en) * | 2014-02-10 | 2015-08-24 | トヨタ自動車株式会社 | Control device for internal combustion engine |
| CN111980789B (en) * | 2020-07-17 | 2021-12-14 | 东风汽车集团有限公司 | Method and system for diagnosing performance degradation of gasoline vehicle particle catcher |
| CN112901324A (en) * | 2021-01-22 | 2021-06-04 | 上海星融汽车科技有限公司 | Particle catcher carrier high-temperature burning detection method, system and diagnosis equipment |
-
2021
- 2021-01-22 CN CN202110086699.8A patent/CN112901324A/en active Pending
- 2021-06-22 WO PCT/CN2021/101464 patent/WO2022156134A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101006254A (en) * | 2004-06-21 | 2007-07-25 | 丰田自动车株式会社 | Method of determining abnormality in particulate filter |
| CN101466922A (en) * | 2006-06-16 | 2009-06-24 | 丰田自动车株式会社 | PM trapper failure detection system |
| CN102105663A (en) * | 2008-07-25 | 2011-06-22 | 丰田自动车株式会社 | Catalyst deterioration diagnosis system and method for internal combustion engine |
| JP2013002366A (en) * | 2011-06-16 | 2013-01-07 | Bosch Corp | Failure diagnosing device for differential pressure sensor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022156134A1 (en) * | 2021-01-22 | 2022-07-28 | 上海星融汽车科技有限公司 | Method and system for detecting high-temperature burnout of particulate filter carrier, and diagnostic device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022156134A1 (en) | 2022-07-28 |
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Application publication date: 20210604 |