WO2022156134A1 - Procédé et système de détection d'un brûlage à haute température d'un support de filtre à particules, et dispositif de diagnostic - Google Patents

Procédé et système de détection d'un brûlage à haute température d'un support de filtre à particules, et dispositif de diagnostic Download PDF

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Publication number
WO2022156134A1
WO2022156134A1 PCT/CN2021/101464 CN2021101464W WO2022156134A1 WO 2022156134 A1 WO2022156134 A1 WO 2022156134A1 CN 2021101464 W CN2021101464 W CN 2021101464W WO 2022156134 A1 WO2022156134 A1 WO 2022156134A1
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WO
WIPO (PCT)
Prior art keywords
temperature
particle trap
carrier
temperature difference
accumulation
Prior art date
Application number
PCT/CN2021/101464
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English (en)
Chinese (zh)
Inventor
王世岩
Original Assignee
上海星融汽车科技有限公司
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Application filed by 上海星融汽车科技有限公司 filed Critical 上海星融汽车科技有限公司
Publication of WO2022156134A1 publication Critical patent/WO2022156134A1/fr

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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
    • 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
    • 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

Definitions

  • the invention belongs to the technical field of vehicle diagnosis, and in particular relates to a high-temperature burning detection method, system and diagnosis equipment for a particle trap carrier.
  • Automotive Particulate Filter is a device used to filter solid particles (mainly soot) in engine exhaust. After the airflow and soot particles enter the DPF, the airflow flows out from the inner wall due to the blocked outlet, thereby trapping the The soot is inside the DPF, which plays the role of collecting soot, and the purification efficiency is as high as 85% or more, which reduces the PM emission.
  • the DPF filters and collects particulates in the exhaust.
  • the soot in the DPF reaches a certain amount, the ECU needs to control the exhaust temperature of the engine to burn the accumulated soot for DPF regeneration, so that the DPF can continuously collect the particles in the exhaust.
  • the method of detecting DPF carrier burnout is mainly to judge by the carrier flow resistance (pressure difference/gas flow).
  • the carrier flow resistance pressure difference/gas flow
  • the carrier honeycomb structure is destroyed, and the flow resistance is smaller than the normal carrier.
  • the present invention adopts the following technical solutions:
  • a method for detecting high temperature burnout of a particle trap carrier including:
  • temperature difference accumulation front temperature - back temperature
  • Case 3 The temperature difference accumulation is greater than that of case 2, and smaller than that of case 1.
  • a system for detecting high temperature burnout of a particle trap carrier comprising a storage module, the storage module including instructions loaded and executed by a processor, the instructions, when executed, cause the processor to execute the above-mentioned one A particle trap carrier high temperature burn-out detection method.
  • a diagnostic apparatus having the above-mentioned high temperature burnout detection system for a particle trap carrier.
  • the present invention can automatically and real-time detect the high temperature burning of the particle filter carrier through the accumulated change of the temperature difference of the particle collector carrier, without relying on flow resistance, convenient and accurate, realize the timely replacement of the carrier, and make the PM amount meet the requirements of National VI emission. Regulatory requirements to improve vehicle safety.
  • Fig. 1 is the flow chart of the present invention
  • Fig. 2 is a schematic diagram of the present invention
  • FIG. 3 is a schematic diagram of the accumulation of temperature differences when the particle trap carrier of the present invention works normally and is not burned;
  • FIG. 4 is a schematic diagram of the accumulation of temperature differences when the particle trap carrier of the present invention is burned
  • FIG. 5 is a schematic diagram of temperature difference accumulation after the particle trap carrier of the present invention is burnt.
  • an embodiment of this specification provides a method for detecting high temperature burnout of a particle trap carrier, including:
  • Case 3 The temperature difference accumulation is greater than that of case 2, and smaller than that of case 1.
  • the particle trap carrier is not burned at high temperature and can continue to be used.
  • the accumulation of temperature difference is smaller than the accumulation of temperature difference when the carrier is working normally and not burnt, but it will be greater than that when the carrier is burned out. Therefore, after monitoring the temperature difference accumulation and the above three situations occur in sequence, it can be judged that the carrier has been burned, so that the carrier can be reminded to replace it in time, so that it can maintain the ability to filter PM.
  • the vehicle ECU monitors the front temperature and the rear temperature of the particle trap carrier, and calculates the temperature difference accumulation.
  • the diagnostic equipment can be used from the vehicle ECU through the OBD port. The accumulation of temperature difference is obtained in real time, and then it is judged whether the carrier of the particle trap is burnt.
  • the vehicle ECU can monitor the front temperature and the rear temperature through two temperature sensors arranged on both sides of the particle trap carrier.
  • the embodiments of this specification also provide a system for detecting high temperature burnout of a particle trap carrier, including a storage module, where the storage module includes instructions loaded and executed by a processor, and when the instructions are executed, the processor executes this specification
  • a storage module includes instructions loaded and executed by a processor, and when the instructions are executed, the processor executes this specification.
  • the storage module may include a readable medium in the form of a volatile storage unit, such as a random access storage unit (RAM) and/or a cache storage unit, and may further include a read-only storage unit (ROM).
  • RAM random access storage unit
  • ROM read-only storage unit
  • Program code for carrying out operations of the present invention may be written in any combination of one or more programming languages, including object-oriented programming languages—such as Java, C++, etc., as well as conventional procedural programming Language - such as the "C" language or similar programming language.
  • 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 execute on.
  • 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 (eg, using an Internet service provider business via an Internet connection).
  • LAN local area network
  • WAN wide area network
  • an external computing device eg, using an Internet service provider business via an Internet connection
  • the embodiments of the present specification further provide a diagnostic device, which has the above-mentioned high-temperature burnout detection system for a particle trap carrier, which will not be described in detail here.

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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)
  • Processes For Solid Components From Exhaust (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Abstract

Un procédé et un système de détection d'un brûlage à haute température d'un support de filtre à particules, et un dispositif de diagnostic, qui peuvent détecter automatiquement un brûlage à haute température d'un support de filtre à particules en temps réel en fonction d'une situation de changement de l'accumulation de différence de température du support de filtre à particules.
PCT/CN2021/101464 2021-01-22 2021-06-22 Procédé et système de détection d'un brûlage à haute température d'un support de filtre à particules, et dispositif de diagnostic WO2022156134A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110086699.8 2021-01-22
CN202110086699.8A CN112901324A (zh) 2021-01-22 2021-01-22 颗粒捕集器载体高温烧毁检测方法、***及诊断设备

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WO2022156134A1 true WO2022156134A1 (fr) 2022-07-28

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PCT/CN2021/101464 WO2022156134A1 (fr) 2021-01-22 2021-06-22 Procédé et système de détection d'un brûlage à haute température d'un support de filtre à particules, et dispositif de diagnostic

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WO (1) WO2022156134A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112901324A (zh) * 2021-01-22 2021-06-04 上海星融汽车科技有限公司 颗粒捕集器载体高温烧毁检测方法、***及诊断设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013002366A (ja) * 2011-06-16 2013-01-07 Bosch Corp 差圧センサの異常診断装置
DE102012022153A1 (de) * 2012-11-10 2014-05-15 Volkswagen Aktiengesellschaft Verfahren zur Regeneration mindestens eines Partikelfilters, Steuereinrichtung und Kraftfahrzeug mit einer solchen
WO2015118856A1 (fr) * 2014-02-10 2015-08-13 Toyota Jidosha Kabushiki Kaisha Dispositif de commande pour moteur à combustion interne
CN111980789A (zh) * 2020-07-17 2020-11-24 东风汽车集团有限公司 汽油车颗粒捕集器性能劣化的诊断方法及***
CN112901324A (zh) * 2021-01-22 2021-06-04 上海星融汽车科技有限公司 颗粒捕集器载体高温烧毁检测方法、***及诊断设备

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4238788B2 (ja) * 2004-06-21 2009-03-18 トヨタ自動車株式会社 パティキュレートフィルタ異常判定方法
JP4483832B2 (ja) * 2006-06-16 2010-06-16 トヨタ自動車株式会社 Ｐｍトラッパの故障検出システム
JP4530081B2 (ja) * 2008-07-25 2010-08-25 トヨタ自動車株式会社 内燃機関の触媒劣化診断装置及び触媒劣化診断方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013002366A (ja) * 2011-06-16 2013-01-07 Bosch Corp 差圧センサの異常診断装置
DE102012022153A1 (de) * 2012-11-10 2014-05-15 Volkswagen Aktiengesellschaft Verfahren zur Regeneration mindestens eines Partikelfilters, Steuereinrichtung und Kraftfahrzeug mit einer solchen
WO2015118856A1 (fr) * 2014-02-10 2015-08-13 Toyota Jidosha Kabushiki Kaisha Dispositif de commande pour moteur à combustion interne
CN111980789A (zh) * 2020-07-17 2020-11-24 东风汽车集团有限公司 汽油车颗粒捕集器性能劣化的诊断方法及***
CN112901324A (zh) * 2021-01-22 2021-06-04 上海星融汽车科技有限公司 颗粒捕集器载体高温烧毁检测方法、***及诊断设备

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