EP3880944A1 - Verfahren zur sperrung einer regeneration eines abgaspartikelsensors - Google Patents
Verfahren zur sperrung einer regeneration eines abgaspartikelsensorsInfo
- Publication number
- EP3880944A1 EP3880944A1 EP19782507.8A EP19782507A EP3880944A1 EP 3880944 A1 EP3880944 A1 EP 3880944A1 EP 19782507 A EP19782507 A EP 19782507A EP 3880944 A1 EP3880944 A1 EP 3880944A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- exhaust gas
- regeneration
- success
- probability
- particle sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000008929 regeneration Effects 0.000 title claims abstract description 39
- 238000011069 regeneration method Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000000903 blocking effect Effects 0.000 title claims abstract description 6
- 239000002245 particle Substances 0.000 claims description 45
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000004364 calculation method Methods 0.000 claims description 6
- 238000004590 computer program Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 4
- 239000004071 soot Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
Classifications
-
- 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
- F01N9/00—Electrical control of exhaust gas treating apparatus
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/0606—Investigating concentration of particle suspensions by collecting particles on a support
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/0656—Investigating concentration of particle suspensions using electric, e.g. electrostatic methods or magnetic methods
-
- 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
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/05—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a particulate sensor
-
- 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
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/20—Sensor having heating means
-
- 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
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/12—Parameters used for exhaust control or diagnosing said parameters being related to the vehicle exterior
-
- 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
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
- F01N2900/1404—Exhaust gas temperature
-
- 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
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
- F01N2900/1411—Exhaust gas flow rate, e.g. mass flow rate or volumetric flow rate
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N2015/0003—Determining electric mobility, velocity profile, average speed or velocity of a plurality of particles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N2015/0042—Investigating dispersion of solids
- G01N2015/0046—Investigating dispersion of solids in gas, e.g. smoke
-
- 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 present invention relates to a method for blocking regeneration of an exhaust gas particle sensor of a motor vehicle. Furthermore, the present invention relates to a computer program that executes every step of the method and a machine-readable storage medium that does the
- resistive particle sensors can be used, which are used to detect the
- Particle ejection use an electrical resistance change caused by particle deposition of an electrode system with two or more interdigitated electrodes. Interlocking electrodes of this type are also referred to as an interdigital electrode system. Under the influence of an electrical measuring voltage, connect to the
- Sensor surface a decreasing electrical resistance or an increasing electrical current with constant applied voltage between the electrodes is measurable. If a current threshold value is exceeded, a defective diesel particle filter (DPF) is detected in the exhaust system of the motor vehicle.
- DPF diesel particle filter
- the aim of the regeneration is to completely burn off the attached particles from the sensor. However, this does not always succeed. In driving conditions of the
- a probability of success of the regeneration is calculated. If the probability of success falls below the threshold, regeneration is blocked. In this way, the start and thus the implementation of potentially unsuccessful sensor regenerations can be avoided. By avoiding these regenerations, the lifetime of the sensor can be extended while the total number of regenerations remains the same. Avoiding sensor regenerations that were not successfully carried out also increases the
- an average value of an exhaust gas velocity at the installation location of the exhaust gas particle sensor is calculated over a predetermined period of time. This mean value is then taken into account when calculating the probability of success. This procedure is based on the knowledge that a high exhaust gas velocity cools the surface of the exhaust gas particle sensor and can therefore lead to unsuccessful regeneration.
- Exhaust gas particle sensor is calculated over a predetermined period. This mean value is also taken into account when calculating the probability of success. This procedure is based on the knowledge that a low temperature of the exhaust gas flowing via the exhaust gas particle sensor leads to particularly strong cooling and thus to a high risk of unsuccessful regeneration of the exhaust gas particle sensor.
- the exhaust gas conditions are predicted in an alternative embodiment. It is preferred there that traffic information about a current and a future route of the motor vehicle is checked to determine whether it is advantageous or disadvantageous for successful regeneration
- the result of this check is taken into account when calculating the probability of success.
- the current and future route can be determined in particular using GPS data and data from a navigation device of the motor vehicle.
- the Traffic conditions can be found, for example, on the Internet or a cloud.
- Traffic conditions affect the speed at which the motor vehicle can travel, which has an influence on the speed and temperature of its exhaust gas.
- city traffic In particular, city traffic,
- the computer program is set up to carry out every step of the method, in particular if it runs on the computing device or an electronic control device. It enables different embodiments of the method to be implemented on an electronic control unit without having to make structural changes to it.
- the electronic control unit will block the regeneration of the exhaust gas particle sensor based on the method.
- 1 shows an exploded view of an exhaust gas particle sensor according to the prior art.
- 2 shows in a diagram the time profile of a measuring current during operation of an exhaust gas particle sensor according to a method of the prior art.
- FIG. 3 shows a flowchart of a method according to a
- FIG. 1 A conventional exhaust gas particle sensor 10, as described in DE 10 2007 021 913 A1, is shown in FIG. 1. It has a sensor element 11 with two interdigital electrodes 12 which intermesh linearly like a comb. Furthermore, it comprises a separate heating device 13 based on a platinum meander and a temperature measuring device 14. Finally, there are several
- Insulation layers 15 and carrier elements 16 are provided.
- the operation of the exhaust gas particle sensor 10 begins with the regeneration 21 shown in FIG. 2.
- the exhaust gas particle sensor 10 is heated so much by means of the heating device 13 that soot particles deposited on the interdigital electrodes 12 are burned off. Then comes one
- Thermalization phase 22 in which a thermal equilibrium is established between the exhaust gas particle sensor 10 and an exhaust gas of a motor vehicle guided over its interdigital electrodes 12. This is followed by a measurement phase 23 in which a constant electrical voltage is applied to the
- Interdigital electrodes 12 is applied. First flows between the
- Interdigital electrodes 12 no current I. However, when soot particles accumulate on the interdigital electrodes 12, they are short-circuited and the current I increases. If he reaches one within a specified period of time
- Regeneration 21 of the exhaust gas particle sensor 10 in order to burn off the soot particles deposited thereon.
- a wait 32 for general release conditions for the regeneration of the exhaust gas particle sensor 10. This is shown in FIG. 3.
- the exhaust gas particle sensor 10 is heated in a protective heating mode by means of the heating device 13 above the dew point of water. This can be determined by means of the temperature measuring device 14.
- a check 33 is carried out to determine whether these general release conditions have been met.
- the method according to the first exemplary embodiment of the invention provides a further check 34 in which it is checked whether the chance of success W of the regeneration is sufficient, that is to say it lies above a threshold value. If this condition is not met, the regeneration is blocked until the chance of success W of the regeneration exceeds the threshold value.
- a calculation 41 of an average exhaust gas velocity at the installation location of the exhaust gas particle sensor 10 takes place over a predetermined period of time. The exhaust gas velocity can be present
- Motor vehicle are determined or modeled.
- an average value of an exhaust gas temperature at the installation location of the exhaust gas particle sensor 10 is also calculated 42.
- measurement results of a temperature sensor installed in the exhaust line or a model can be used. From the two
- a further check 34 is also carried out to determine whether the
- a current and a future route of the motor vehicle are determined using GPS data and data from the navigation device of the motor vehicle, traffic information loaded from a cloud via this route and then checked whether advantageous or disadvantageous for successful regeneration
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Pathology (AREA)
- Dispersion Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018219502.1A DE102018219502A1 (de) | 2018-11-15 | 2018-11-15 | Verfahren zur Sperrung einer Regeneration eines Abgaspartikelsensors |
PCT/EP2019/075883 WO2020099005A1 (de) | 2018-11-15 | 2019-09-25 | Verfahren zur sperrung einer regeneration eines abgaspartikelsensors |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3880944A1 true EP3880944A1 (de) | 2021-09-22 |
Family
ID=68136348
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19782507.8A Withdrawn EP3880944A1 (de) | 2018-11-15 | 2019-09-25 | Verfahren zur sperrung einer regeneration eines abgaspartikelsensors |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3880944A1 (de) |
CN (1) | CN112969846B (de) |
DE (1) | DE102018219502A1 (de) |
WO (1) | WO2020099005A1 (de) |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4092499B2 (ja) * | 2003-09-17 | 2008-05-28 | 日産自動車株式会社 | Dpfの再生制御装置 |
DE102007021913A1 (de) | 2007-05-10 | 2008-11-20 | Robert Bosch Gmbh | Verfahren und Sensor zur Detektion von Teilchen in einem Gasstrom sowie deren Verwendung |
DE102009028319A1 (de) * | 2009-08-07 | 2011-02-10 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Betrieb eines Partikelsensors |
JP2012077716A (ja) * | 2010-10-05 | 2012-04-19 | Toyota Motor Corp | Pmセンサの異常検出装置及び方法 |
DE102013222022A1 (de) * | 2013-10-30 | 2015-04-30 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Erkennung einer Wasserdurchfahrt mittels Abstandssensoren |
DE102013226175A1 (de) * | 2013-12-17 | 2015-07-02 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Betreiben von Abgassensoren |
DE102014208875A1 (de) * | 2014-05-12 | 2015-11-12 | Robert Bosch Gmbh | Verfahren zum Betreiben eines Partikelfilters, Vorrichtung zur Durchführung des Verfahrens, Computer-Programm und Computer-Programmprodukt |
DE102014217402A1 (de) * | 2014-09-01 | 2016-03-03 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Diagnose der Funktion eines Abgassensors |
DE102015214398A1 (de) * | 2015-07-29 | 2017-02-02 | Robert Bosch Gmbh | Verfahren zum Betreiben eines Sensors zur Detektion von Teilchen in einem Abgasstrang einer Brennkraftmaschine |
US10488315B2 (en) * | 2016-02-12 | 2019-11-26 | Ford Global Technologies, Llc | Methods and systems for prediction of sensor response time |
JP6424848B2 (ja) * | 2016-02-17 | 2018-11-21 | トヨタ自動車株式会社 | 自動運転車両の制御装置 |
GB201702416D0 (en) * | 2017-02-15 | 2017-03-29 | Jaguar Land Rover Ltd | Method of controlling a regeneration procedure on a vehicle |
-
2018
- 2018-11-15 DE DE102018219502.1A patent/DE102018219502A1/de active Pending
-
2019
- 2019-09-25 WO PCT/EP2019/075883 patent/WO2020099005A1/de unknown
- 2019-09-25 CN CN201980075139.3A patent/CN112969846B/zh active Active
- 2019-09-25 EP EP19782507.8A patent/EP3880944A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
CN112969846B (zh) | 2023-02-21 |
WO2020099005A1 (de) | 2020-05-22 |
DE102018219502A1 (de) | 2020-05-20 |
CN112969846A (zh) | 2021-06-15 |
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