WO2005093234A1 - Verfahren und vorrichtung zur ermittlung des vorhandenseins eines vorgeschriebenen wärmetauschers - Google Patents
Verfahren und vorrichtung zur ermittlung des vorhandenseins eines vorgeschriebenen wärmetauschers Download PDFInfo
- Publication number
- WO2005093234A1 WO2005093234A1 PCT/EP2005/003095 EP2005003095W WO2005093234A1 WO 2005093234 A1 WO2005093234 A1 WO 2005093234A1 EP 2005003095 W EP2005003095 W EP 2005003095W WO 2005093234 A1 WO2005093234 A1 WO 2005093234A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- heat exchanger
- temperature
- temperature gradient
- values
- motor vehicle
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 46
- 230000002123 temporal effect Effects 0.000 claims abstract description 4
- 238000011156 evaluation Methods 0.000 claims description 17
- 230000003197 catalytic effect Effects 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 3
- 239000002826 coolant Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/88—Handling or mounting catalysts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/88—Handling or mounting catalysts
- B01D53/885—Devices in general for catalytic purification of waste gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9495—Controlling the catalytic process
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
Definitions
- the invention relates to a method for determining the presence of a prescribed heat exchanger, in particular a catalytically active cooler in a motor vehicle, and a device therefor, with at least one heat exchanger, at least one measuring device, and an evaluation device.
- a prescribed heat exchanger in particular a catalytically active cooler in a motor vehicle
- a device therefor with at least one heat exchanger, at least one measuring device, and an evaluation device.
- catalytically active coolers are increasingly being installed in modern motor vehicles.
- a catalytically active cooler for the coolant of an engine of a motor vehicle has an additional coating, by means of which ozone contained in the air flowing to the vehicle and flowing through the cooler is catalytically converted into harmless oxygen.
- a catalytically active cooler is sometimes also known under its sales name "PremAir cooler”.
- PremAir cooler Such catalytically active coolers were developed in particular with a view to improving the environmental compatibility of the materials used and avoiding undesired ozone and therefore very often meet the relevant environmental regulations.
- European patent application EP 1 153 646 AI describes a motor vehicle with a cooler with a catalytic coating, in which a control unit with associated sensors controls the function of the cooler and informs the user of the condition or function of the cooler.
- the sensors also have temperature sensors at different points in the cooling system. A safeguard against manipulation of the cooler or a method for recognizing the cooler, for example with temperature sensors, is not described.
- temperature measuring devices for cooling water have sensors, which measure the absolute temperature of the cooling water after opening the so-called thermostat, which in the closed state leads the cooling circuit past the radiator for a certain time - and guides it through the radiator after opening ,
- the disadvantage here is that the characteristics of the thermostat change over time and an absolute measurement of the cooling water temperature to determine the installation of a catalytically active cooler compared to a conventional cooler is not suitable.
- the object on which the present invention is based is to provide as reliable a method and device as possible for determining the presence of a prescribed heat exchanger, in particular a catalytically active cooler in a motor vehicle.
- a method for determining the presence of a prescribed heat exchanger, in particular a catalytically active cooler in a motor vehicle with the following method steps in the operation of the motor vehicle:
- a device for determining the presence of a prescribed heat exchanger, in particular a catalytically active cooler in a motor vehicle comprising: at least one heat exchanger with a heat exchanger means of the motor vehicle engine; at least one measuring device for measuring the temperature of the heat exchanger means; and an evaluation device for evaluating data and for determining the presence of a prescribed heat exchanger.
- a device for determining the presence of a prescribed heat exchanger in particular a catalytically active cooler in a motor vehicle, comprising: at least one heat exchanger with a heat exchanger means of the motor vehicle engine; at least one measuring device for measuring the temperature of the heat exchanger means; and an evaluation device for evaluating data and for determining the presence of a prescribed heat exchanger.
- the idea on which the present invention is based is to integrate a temperature sensor in a heat exchanger, with which a certain absolute temperature gradient of the heat exchanger means can be measured in certain operating states of the engine.
- a certain absolute temperature gradient of the heat exchanger means can be measured in certain operating states of the engine.
- a different temperature gradient is measured, which enables an evaluation algorithm to be used to provide information about the presence of a catalytically active cooler.
- a change in the characteristics of the thermostat has no influence on the measurement result. Manipulations can be uncovered and economic damage avoided.
- the temperature sensor is sawn out of a no longer functional catalytically active cooler or is otherwise removed by force, since it cannot be easily removed due to the device according to the invention, and is attached in the engine compartment, for example to a coolant hose or to a conventional replacement cooler, this is done by the The inventive method reliably recognized.
- method step S1 has the following sub-steps:
- a further embodiment of the invention provides the following sub-steps in method step S2: (S2-1) comparing the recorded current operationally relevant parameters with previously defined values; (S2-2) determining an associated current operating state in accordance with this comparison; and (S2-3) determining the temperature gradient to be expected in this current operating state.
- the operating state can advantageously be determined from tables using stored data, and the temperature gradient to be expected can also be determined easily.
- the current temperature gradient is determined in method step S3 by taking into account the current values of the heat exchanger mean temperature recorded in the time window.
- method step S4 has the following substeps: (S4-1) comparing the current temperature gradient with the temperature gradient to be expected; (S4-2) taking this comparison result into account on the basis of a predetermined threshold value; and (S4-3) output of data signals in the presence of a prescribed heat exchanger.
- method step S4 has the following substeps:
- another embodiment according to the invention provides that the time window with a first point in time by reaching a predetermined start threshold value by at least one operationally relevant parameter, and that the time window with a second point in time by reaching the same or a further predetermined end point. Threshold value is determined by the same or at least one other operationally relevant parameter.
- the measuring device of the device has at least one temperature sensor for measuring the mean heat exchanger temperature; has a receiving element for receiving the temperature sensor and a connection device for connection to the evaluation device.
- the receiving element is inseparably connected to the heat exchanger, as a result of which an unauthorized removal is simply counteracted.
- Receiving element for receiving the temperature sensor has a corresponding holder.
- the temperature sensor has a predetermined breaking point and is connected to the receiving element in such a way that after the temperature sensor is removed from the receiving element, the temperature sensor becomes permanently inoperative.
- the temperature sensor is part of an adapter of the connection device.
- the adapter and the receiving element have corresponding fastening elements, which are designed for an inseparable state after assembly, since this results in an additional obstacle to manipulation.
- the evaluation device has a storage device for storing values of temporal profiles of measured values, a data memory for storing predefined threshold values, operating status data and the like, and at least one counter.
- the evaluation device is part of an on-board computer (ECU) of a motor vehicle.
- ECU on-board computer
- the method enables a reliable statement regarding the placement of the temperature sensor and thus whether a catalytically active cooler is present or Not.
- the device according to the invention brings about advantageous obstacles to manipulation.
- FIG. 1 shows a schematic diagram of courses of operationally relevant parameters over the time of a motor vehicle in operation
- FIG. 2 shows a schematic block diagram of an exemplary embodiment of the device according to the invention
- FIG. 3 shows a schematic view of a receiving element of the device according to the invention installed in a cooler
- Fig. 4 is a schematic view of a connection device of the device according to the invention.
- FIG. 1 different courses of operationally relevant parameters of a motor vehicle are shown schematically over a time axis t.
- the reference numeral 21 denotes the vehicle speed represented by a double curve, which is increased above a threshold value S in a first point in time tl, in order then to run relatively constant within a time window tf until it reaches values below the threshold value S at point in time t2 decreases.
- the operating temperature of the vehicle engine increases and thus also the temperature of its heat exchanger means, for example cooling water, the course of which is identified by reference number 22 and is shown in a solid curve.
- the operating-related increase in this first heat exchanger mean temperature 22 is known to take place with a dead time within the time window tf, which can be seen from the distance from the first time t1 on the time axis t.
- This temperature rise has a slope relevant to the operating state, which is represented by a slope line 24 which forms a so-called temperature gradient over time.
- This temperature gradient is characterized by a specific operating state of the motor vehicle.
- This operating state can be described by certain operationally relevant parameters in the time window tf, for example vehicle speed v in km / h, engine speed n in revolutions / min, exhaust gas quantity in ⁇ mass / time, and others. For reasons of clarity, only the vehicle speed is shown in FIG. 1.
- Certain operating states can thus be recognized on the basis of the known parameter values and the associated expected temperature gradients of the heat exchanger means can be determined. For example, the amount of exhaust gas and its temperature can be used to predict which temperature rise in the heat exchanger means is to be expected.
- This temperature gradient also depends on where in the cooling circuit of the vehicle engine the heat exchanger temperature is measured, in particular by the installation location and the installation of an associated measuring device.
- the heat transfer processes occurring with different heat transfer resistances are known and will not be explained.
- a temperature increase occurs after a dead time with a second gradient line 25.
- the second slope line 25 can be seen as a temperature gradient with a different value than with the first slope line 24, here with a smaller value.
- a motor temperature of 85 ° C. that is exceeded for the first time is treated as an entry criterion. If one or more specific operationally relevant parameters exceeds a previously defined threshold value SW depending on a specific operating state, the time window tf is started in a first method step S1.
- the operationally relevant parameters and the mean heat exchanger temperature are observed in a subsequent method step S2, that is to say their values are measured and stored at predetermined time intervals, so that the value profile is recorded, for example in an associated storage device
- the time window tf is ended in a second step t2 in a method step S3.
- the observed operationally relevant parameters enable determination of the operating state and thus the determination of a temperature gradient to be expected in this operating state.
- This temperature gradient obtained in this way is compared with the current temperature gradient determined in a method step S5 from the recorded values of the heat exchanger mean temperature in a further method step S6.
- This comparison provides information about the location at which location the values of the current temperature gradient were measured. If the value or the range of values of the current temperature gradient matches that of the temperature gradient to be expected, a suitable heat exchanger is available, for example. If the value range of the current temperature gradient is smaller or larger than that of the temperature gradient to be expected, then the built-in heat exchanger is not suitable, or there is a manipulated heat exchanger system. In a manipulated cooling system, for example, the current temperature gradient can be larger if it is heated in a manipulative manner in order to obtain a larger temperature gradient. Here, however, the other criteria cannot be met, so that detection is still possible. In a further embodiment according to the invention, this method is repeated several times to check the plausibility of these determination values, with one counter being incremented up to a predetermined value for each comparison value determined after each method run.
- the result of the determination is, for example, transferred to the on-board computer for further use or display via an in-vehicle data bus.
- special notifications or measures can be initiated.
- FIG. 2 shows a schematic block diagram of an exemplary embodiment of the device according to the invention for carrying out the method according to the invention.
- the device 1 consists of an evaluation unit 13 to which a measuring device 5 for measuring a mean heat exchanger temperature in a heat exchanger 2 is connected via a connecting device 8 and a line 12.
- Additional units for determining 17, 18, 19, 20 of parameters relevant to operation are connected to the evaluation unit 13.
- the units for determining 17, 18, 19, 20 and the like can also be connected to an on-board computer 14 'which is connected to the evaluation unit 13 via a data transmission 26 and thus supplies the required data values.
- the evaluation unit 13 has at least one memory device 15 and at least one counter 16. It can also be provided with a timer, not shown.
- the storage device 16 is used, among other things, for storing recorded measured values, the counter 16 is an event counter.
- the evaluation device 13 has a data memory 27, which contains predetermined table values, threshold values and the like, which are used to determine the operating states and expected values.
- the evaluation unit 13 can also be part of an on-board computer 14, which is symbolized by a colon-dash line.
- the measuring device 5 has a receiving element 6 with a receptacle 7 for receiving a temperature sensor 10, as shown in FIG. 3.
- the receiving element 6 is designed such that it is installed in the heat exchanger 2, for example in an intermediate space 4 between fins 3.
- the receiving element 6 is preferably glued in such a way that it damages the heat exchanger 2 during an attempt to remove it. Other mounting options are conceivable.
- the temperature sensor 10 is located in an adapter 9 of the connection device 8, as shown in FIG. 4.
- the temperature sensor 10 and the receptacle 7 of the receptacle element 6 have a corresponding shape and dimensions.
- the adapter 9 is equipped with fastening elements 11, for example flexible holding fingers with barbs, which, in cooperation with corresponding fastening elements (not shown) on the receiving element 6, form an inseparable connection after assembly. Abusive expansion is thus effectively prevented.
- the temperature sensor 10 is glued in the receptacle 7 of the receptacle element 6 in such a way that it becomes inoperative during an attempt to remove it, for example by means of a predetermined breaking point.
- the storage device 15, the counter 16 and a timer are components of the on-board computer.
- the data store 27 can also have wireless connection devices to external data stores, for example via a satellite connection. It can also be a CD-ROM or DVD device.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Exhaust Gas After Treatment (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/594,078 US7567884B2 (en) | 2004-03-26 | 2005-03-23 | Method and apparatus for detecting the presence of a prescribed heat exchanger |
EP05732356A EP1735528A1 (de) | 2004-03-26 | 2005-03-23 | Verfahren und vorrichtung zur ermittlung des vorhandenseins eines vorgeschriebenen w rmetauschers |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004015044A DE102004015044B4 (de) | 2004-03-26 | 2004-03-26 | Verfahren und Vorrichtung zur Ermittlung des Vorhandenseins eines vorgeschriebenen Wärmetauschers |
DE102004015044.3 | 2004-03-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005093234A1 true WO2005093234A1 (de) | 2005-10-06 |
Family
ID=34964671
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/003095 WO2005093234A1 (de) | 2004-03-26 | 2005-03-23 | Verfahren und vorrichtung zur ermittlung des vorhandenseins eines vorgeschriebenen wärmetauschers |
Country Status (4)
Country | Link |
---|---|
US (1) | US7567884B2 (de) |
EP (1) | EP1735528A1 (de) |
DE (1) | DE102004015044B4 (de) |
WO (1) | WO2005093234A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8707808B2 (en) * | 2006-09-06 | 2014-04-29 | Bayerische Motoren Werke Aktiengesellschaft | Sensor attachment and motor vehicle |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8171779B2 (en) | 2008-09-27 | 2012-05-08 | Audi, Ag | Method and device for monitoring an ozone-oxygen conversion means, especially for vehicles |
DE102009017353B4 (de) * | 2009-04-14 | 2011-05-05 | Audi Ag | Verfahren und Vorrichtung zur Diagnose eines Verbaus eines Kühlers, insbesondere eines ozonreduzierenden Kühlers, in einem Kühlkreislauf einer flüssigkeitsgkühlten Brennkraftmaschine |
JP6089930B2 (ja) | 2013-04-26 | 2017-03-08 | トヨタ自動車株式会社 | 車両用大気浄化装置 |
TWI567390B (zh) * | 2016-02-16 | 2017-01-21 | Solteam Opto Inc | Can be automated production of water quality sensor |
US10222845B1 (en) * | 2017-09-26 | 2019-03-05 | Hewlett Packard Enterprise Development Lp | Liquid cooling tamper detection |
EP3623782B1 (de) * | 2018-09-14 | 2021-11-10 | Landis+Gyr AG | Überwachung der thermischen leistung eines stromzählers |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4426494A1 (de) * | 1994-07-27 | 1996-02-01 | Bosch Gmbh Robert | Einrichtung zur Überwachung des Kühlsystems bei einer Brennkraftmaschine |
DE19927108A1 (de) * | 1999-06-14 | 2001-01-11 | Heraeus Electro Nite Int | Verfahren zur Herstellung von Sensoren sowie Sensor, insbesondere Temperatursensor |
EP1153646A1 (de) * | 2000-05-10 | 2001-11-14 | Volvo Car Corporation | Motorfahrzeug mit einem Kühler mit katalytischer Beschichtung |
EP1367235A1 (de) * | 2002-05-30 | 2003-12-03 | Ford Global Technologies, LLC | Ein Diagnosesystem und Verfahren für ein Kraftfahrzeug |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6506605B1 (en) * | 2000-05-26 | 2003-01-14 | Engelhard Corporation | System for sensing catalyst coating loss and efficiency |
DE10340086A1 (de) * | 2003-08-30 | 2005-03-24 | Daimlerchrysler Ag | Katalytischer Kraftfahrzeugkühler |
-
2004
- 2004-03-26 DE DE102004015044A patent/DE102004015044B4/de not_active Expired - Lifetime
-
2005
- 2005-03-23 EP EP05732356A patent/EP1735528A1/de not_active Withdrawn
- 2005-03-23 WO PCT/EP2005/003095 patent/WO2005093234A1/de active Application Filing
- 2005-03-23 US US10/594,078 patent/US7567884B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4426494A1 (de) * | 1994-07-27 | 1996-02-01 | Bosch Gmbh Robert | Einrichtung zur Überwachung des Kühlsystems bei einer Brennkraftmaschine |
DE19927108A1 (de) * | 1999-06-14 | 2001-01-11 | Heraeus Electro Nite Int | Verfahren zur Herstellung von Sensoren sowie Sensor, insbesondere Temperatursensor |
EP1153646A1 (de) * | 2000-05-10 | 2001-11-14 | Volvo Car Corporation | Motorfahrzeug mit einem Kühler mit katalytischer Beschichtung |
EP1367235A1 (de) * | 2002-05-30 | 2003-12-03 | Ford Global Technologies, LLC | Ein Diagnosesystem und Verfahren für ein Kraftfahrzeug |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8707808B2 (en) * | 2006-09-06 | 2014-04-29 | Bayerische Motoren Werke Aktiengesellschaft | Sensor attachment and motor vehicle |
Also Published As
Publication number | Publication date |
---|---|
US20080021631A1 (en) | 2008-01-24 |
EP1735528A1 (de) | 2006-12-27 |
US7567884B2 (en) | 2009-07-28 |
DE102004015044B4 (de) | 2012-04-26 |
DE102004015044A1 (de) | 2005-10-13 |
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