CN108915884A - Engine on-off control method, control device and the vehicle with it - Google Patents
Engine on-off control method, control device and the vehicle with it Download PDFInfo
- Publication number
- CN108915884A CN108915884A CN201810638229.6A CN201810638229A CN108915884A CN 108915884 A CN108915884 A CN 108915884A CN 201810638229 A CN201810638229 A CN 201810638229A CN 108915884 A CN108915884 A CN 108915884A
- Authority
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- China
- Prior art keywords
- engine
- crankshaft
- top dead
- dead centre
- cylinder body
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D37/00—Non-electrical conjoint control of two or more functions of engines, not otherwise provided for
- F02D37/02—Non-electrical conjoint control of two or more functions of engines, not otherwise provided for one of the functions being ignition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/009—Electrical control of supply of combustible mixture or its constituents using means for generating position or synchronisation signals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/101—Engine speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2250/00—Engine control related to specific problems or objectives
- F02D2250/18—Control of the engine output torque
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
A kind of engine on-off control method, control device and the vehicle with it, the control method include receiving engine halt instruction；The speed of crankshaft of engine is reduced to the first rotary speed threshold value；Starter is controlled by rotating speed control mode；Collecting crankshaft revolving speed and crank position；Driving duration when crankshaft to be stopped to top dead centre is judged by speed of crankshaft and crank position；According to driving duration, speed of crankshaft is gradually decreased by starter, until crankshaft is stopped on the position of top dead centre.Crankshaft can be parked on the top dead centre of cylinder body when engine is shut down, shorten the time of engine start by the device, increase ride comfort when engine is again started up.
Description
Technical field
The present invention relates to engine start/stop control fields, more particularly to a kind of engine on-off control method, engine
Play fixed-position stop control apparatus and the vehicle with the control device.
Background technique
In the prior art, in engine stop, starter can be drawn engine crankshaft by biggish negative torque
Stop, but the specific location of crankshaft after engine is shut down can not be controlled, in this way when engine starts again, due to piston
The difference of position, engine need first to judge that, to determine ignition order, this will increase engine to each cylinder introversion shaft position
Priming speed, while the ride comfort of engine can also be interfered.
Summary of the invention
In view of this, the present invention provides a kind of engine on-off control method, engine start/stop control control device and tool
There is the vehicle of the control device, which can be parked in crankshaft on the top dead centre of cylinder body, shortening is started when engine is shut down
The time that machine starts increases ride comfort when engine is again started up.
The present invention provides a kind of engine on-off control methods, include the following steps：
Receive engine halt instruction；
The speed of crankshaft of engine is reduced to the first rotary speed threshold value；
Starter is controlled by rotating speed control mode；
Collecting crankshaft revolving speed and crank position；
Driving duration when crankshaft to be stopped to top dead centre is judged by speed of crankshaft and crank position；
According to driving duration, speed of crankshaft is gradually decreased by starter, until crankshaft is stopped on the position of top dead centre.
Further, when receiving engine instruction, this method further includes by torque control mode, by turning for crankshaft
Prompt drop is down to the first rotary speed threshold value.
Further, at the position of collecting crankshaft, position of the particular cylinder block inside crankshaft relative to top dead centre is acquired, is being sent out
After motivation is shut down, the crankshaft in the particular cylinder block is stopped on the position of top dead centre.
Further, when the engine is started, engine is started according to specific ignition order, and first to described specific
Cylinder body is lighted a fire.
It further, further include following steps at collecting crankshaft position：
Position of each cylinder body inside crankshaft relative to top dead centre is acquired, the position for selecting crankshaft relative to top dead centre is nearest
Cylinder body；
The crankshaft for the cylinder body selected by the crank position judgement for the cylinder body selected reaches drive when top dead centre
Dynamic duration；
Speed of crankshaft is gradually decreased by starter, until the crankshaft for the cylinder body selected to be stopped to the position of top dead centre
On, and store the corresponding serial number of the cylinder body selected.
Further, when the engine is started, the serial number adjustment engine of the cylinder body stored when being shut down according to last time is whole
Ignition order, and light a fire first to the corresponding cylinder body of the serial number.
The present invention also provides a kind of engine start/stop control devices, including starter, engine, control unit and crankshaft
Position sensor；
The starter is connected by drive belt train with the engine；
Described control unit receives the stopping signal of the engine, and controls the engine stop oil spout igniting, together
When control the starter speed of crankshaft of the engine be reduced to the first rotary speed threshold value；
Described control unit controls the starter and enters rotating speed control mode；
Described control unit acquires the revolving speed and crankshaft of the crankshaft of the engine by the crankshaft position sensor
Position, and judge according to the revolving speed of the engine crankshaft and crankshaft volume position driving duration when crankshaft to be stopped to top dead centre；
Described control unit gradually decreases the crankshaft of the engine according to the driving duration, by the starter
The crankshaft of the engine is stopped on the position of top dead centre by revolving speed.
Further, position of the crankshaft in described control unit acquisition engine particular cylinder block relative to top dead centre, and
When the engine is shut down, the crankshaft in the particular cylinder block is stopped on the position of top dead centre.
Further, described control unit acquires position of all cylinder body inside crankshafts of the engine relative to top dead centre
It sets, and selects the crankshaft cylinder body nearest relative to top dead center position；Described control unit is according to the cylinder body inside crankshaft selected
Relative to the position of top dead centre, obtains the driving duration when cylinder body inside crankshaft selected is stopped at top dead centre, start described
When machine is shut down, the intracorporal crankshaft of the cylinder selected is stopped on the position of top dead centre, and it is corresponding to store the cylinder body selected
Serial number.
The present invention also provides a kind of vehicle, which includes engine start/stop control device provided by the invention.
In conclusion in the present invention, by judging the revolving speed of crankshaft and the position of crankshaft when engine is shut down, rising
Under the rotating speed control mode of motivation, judges driving duration when crankshaft is stopped at top dead centre, gradually decrease song finally by starter
The revolving speed of axis, crankshaft are stopped on the position of top dead centre.By the position that crankshaft is just stopped to top dead centre when engine is shut down
On, the judgement of crank position and ignition order can be saved when engine starts again in this way, saves engine start
Time increases smooth performance when engine starts again, further, during engine is shut down, passes through revolving speed
Control model controls starter, by the control of driving duration and revolving speed, the standard of crank position when can guarantee to shut down
True property, while increasing stability when engine is shut down.Further, by turning inward the judgement of shaft position, energy to each cylinder body
Crankshaft and top dead centre are enough selected apart from nearest cylinder body, by the way that the intracorporal crankshaft of the cylinder to be stopped on the position of top dead centre, this energy
Enough downtimes for further shortening engine.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects, features and advantages of the invention can
It is clearer and more comprehensible, it is special below to lift preferred embodiment, and cooperate attached drawing, detailed description are as follows.
Detailed description of the invention
Fig. 1 is the control logic figure for the engine on-off control method that first embodiment of the invention provides.
Fig. 2 is the schematic diagram of crank position after controlling engine shutdown using engine on-off control method shown in Fig. 1.
Fig. 3 is the system block diagram of engine start/stop control device provided by the invention.
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Attached drawing and preferred embodiment, detailed description are as follows.
In view of this, the present invention provides a kind of engine on-off control method, engine start/stop control control device and tool
There is the vehicle of the control device, which can be parked in crankshaft on the top dead centre of cylinder body, shortening is started when engine is shut down
The time that machine starts increases ride comfort when engine is again started up.
Fig. 1 is the control logic figure for the engine on-off control method that first embodiment of the invention provides.Fig. 2 is to utilize figure
After engine on-off control method shown in 1 controls engine shutdown, the schematic diagram of crank position.As shown in Figures 1 and 2, this hair
The engine on-off control method that bright first embodiment provides includes the following steps：
Receive engine halt instruction；
Engine speed is reduced to the first rotary speed threshold value；
Starter is controlled by rotating speed control mode；
Collecting crankshaft revolving speed and crank position；
Driving duration when crankshaft to be stopped to top dead centre is judged by speed of crankshaft and crank position；
According to driving duration, speed of crankshaft is gradually decreased by starter, until crankshaft is stopped on the position of top dead centre.
In the present embodiment, by judging the revolving speed of crankshaft and the position of crankshaft when engine is shut down, in starter
Under rotating speed control mode, driving duration when crankshaft is stopped at top dead centre is judged, gradually decrease turning for crankshaft finally by starter
Speed, crankshaft are stopped on the position of top dead centre.By just stopping at crankshaft on the position of top dead centre when engine is shut down, in this way
The judgement that crank position and ignition order can be saved when engine starts again saves the time of engine start, increases
Added smooth performance when engine start, further, engine shut down during, by rotating speed control mode to rise
Motivation is controlled, and by the control of driving duration and revolving speed, the accuracy of crank position, increases simultaneously when can guarantee to shut down
Stability when engine is shut down.
Further, in the present embodiment, when receiving engine halt instruction, first passing through torque control mode will be bent
The revolving speed of axis is reduced to the first rotary speed threshold value, to shorten the downtime of engine, that is, in the shutdown strategy of the engine
In, starter, which first passes through torque control mode, reduces the revolving speed of engine, is then again stopped at crankshaft by rotating speed control mode
Specific position.First rotary speed threshold value can be determined according to the performance of engine and starter, it is preferable that the first revolving speed threshold
Value is not more than 200RPM (Revolutions Per Minute revolutions per minute).
Further, it as shown in Fig. 2, when 11 position of collecting crankshaft, acquires in particular cylinder block, crankshaft 11 is relative to top dead centre
The position of (in Fig. 2 shown in dotted line), after the shutdown of engine 12, the crankshaft 11 in particular cylinder block to be stopped to the position of top dead centre
On, which can be depending on the needs of 12 start-up strategy of the cylinder number of engine 12 and engine.Such as, start in three cylinders
In machine 12, a preferably cylinder is the particular cylinder block, that is, the crankshaft 11 in a cylinder is stopped at the cylinder after engine 12 is shut down every time
On the top dead centre of body.When engine 12 starts again, engine 12 always starts to light a fire in this specific cylinder, and according to spy
Fixed ignition order starts engine, this can optimize the smooth performance of three-cylinder engine 12 significantly.
Further, in the present embodiment, starter 13 is with 48VBSG (Belt drive Start
Generator) the starter 13 of system as shown in Fig. 2, the starter 13 is set to the front end of engine 12, and passes through driving
Belt 14 drives engine 12 to operate.
In conclusion in the present embodiment, by judging the revolving speed of crankshaft and the position of crankshaft when engine is shut down,
Under the rotating speed control mode of starter, judges driving duration when crankshaft is stopped at top dead centre, gradually decreased finally by starter
The revolving speed of crankshaft, crankshaft are stopped on the position of top dead centre.By the position that crankshaft is just stopped to top dead centre when engine is shut down
It sets, the judgement of crank position and ignition order can be saved when engine starts again in this way, save engine start
Time, increase smooth performance when engine start, further, engine shut down during, pass through revolving speed control
Molding formula controls starter, by driving duration and revolving speed control, can guarantee shut down when crank position it is accurate
Property, while increasing stability when engine is shut down.
The engine on-off control method that second embodiment of the invention provides starts with what first embodiment of the invention provided
Machine on-off control method is essentially identical, the difference is that, it further include walking as follows in collecting crankshaft revolving speed and crank position
Suddenly：
Position of each cylinder body inside crankshaft relative to top dead centre is acquired, the position for selecting crankshaft relative to top dead centre is nearest
Cylinder body；
Driving duration when judging that the intracorporal crankshaft of the cylinder reaches top dead centre by the intracorporal crank position of the cylinder；
Speed of crankshaft is gradually decreased by starter, until the intracorporal crankshaft of the cylinder is stopped on the position of top dead centre, and
Store the corresponding serial number of the cylinder body.
In the present embodiment, by turning inward the acquisition of shaft position to each cylinder body, and judge the intracorporal crankshaft phase of which cylinder
It is nearest for the position of top dead centre, the intracorporal crankshaft of the cylinder is stopped on top dead centre finally by starter, this can further be dropped
The time that low engine is shut down.When engine starts again, the serial number for the cylinder body being stored in when can be shut down according to last time is adjusted
Engine entirety ignition order, and light a fire first to the corresponding cylinder body of the serial number.
Fig. 3 is the system block diagram of engine start/stop control device provided by the invention.As shown in figure 3, provided by the invention
It includes starter 21, engine 22, control unit 23 and crankshaft position sensor 24 that engine 22, which plays fixed-position stop control apparatus,.
Wherein starter 21 is connected by drive belt train with engine 22；
Control unit 23 receives the stopping signal of engine 22, and control engine 22 stops oil spout igniting, while controlling
The speed of crankshaft of engine 22 is reduced to the first rotary speed threshold value by motivation 21；
Control unit 23 controls starter 21 and enters rotating speed control mode；
Control unit 23 turns by the revolving speed of 24 collecting crankshaft of crankshaft position sensor and the position of crankshaft, and according to crankshaft
Speed and crank position judge driving duration when crankshaft to be stopped to top dead centre；
Control unit 23 gradually decreases speed of crankshaft, crankshaft is stopped at top dead centre according to driving duration, control starter 21
Position on.
Further, in the present embodiment, control unit 23 acquires position of the crankshaft relative to top dead centre in particular cylinder block
It sets, and when engine 22 is shut down, the crankshaft in particular cylinder block is stopped on the position of top dead centre.
Further, in other embodiments, control unit 23 acquires the intracorporal crankshaft of all cylinders relative to top dead centre
Position, and select the crankshaft cylinder body nearest relative to top dead center position；Control unit 23 is according to the cylinder body inside crankshaft relative to upper
The position of stop obtains the driving duration when cylinder body inside crankshaft is stopped at top dead centre, will be in the cylinder body when engine 22 is shut down
Crankshaft be stopped on the position of top dead centre.At the same time, control unit 23 stores the corresponding serial number of the cylinder body, when engine 22 again
When secondary starting, the serial number for the cylinder body that control unit 23 stores when being shut down according to last time is lighted a fire in corresponding cylinder body, and root
According to the whole ignition order of serial number adjustment engine 22 of the cylinder body.
Further, in the present embodiment, control unit 23 can be ECU ((Electronic Control Unit electricity
Sub-control unit 23).
In conclusion in the present invention, by judging the revolving speed of crankshaft and the position of crankshaft when engine is shut down, rising
Under the rotating speed control mode of motivation, judges driving duration when crankshaft is stopped at top dead centre, gradually decrease song finally by starter
The revolving speed of axis, crankshaft are stopped on the position of top dead centre.By the position that crankshaft is just stopped to top dead centre when engine is shut down
On, the judgement of crank position and ignition order can be saved when engine starts again in this way, saves engine start
Time increases smooth performance when engine start, further, during engine is shut down, is controlled by revolving speed
Mode controls starter, by the control of driving duration and revolving speed, the accuracy of crank position when can guarantee to shut down,
Increase stability when engine is shut down simultaneously.Further, it by turning inward the judgement of shaft position to each cylinder body, can select
Crankshaft and top dead centre are apart from nearest cylinder body, and by the way that the intracorporal crankshaft of the cylinder to be stopped on the position of top dead centre, this can be into one
Shorten the downtime of engine in step ground.
The present invention also provides a kind of vehicles, include engine start/stop control device provided by the invention, about the vehicle
Other technical characteristics, refer to the prior art, details are not described herein.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
It is right according to the technical essence of the invention for the equivalent embodiment of equivalent variations, but without departing from the technical solutions of the present invention
Any simple modification, equivalent change and modification made by above embodiments, all of which are still within the scope of the technical scheme of the invention.
Claims (10)
1. a kind of engine on-off control method, it is characterised in that：Include the following steps：
Receive engine halt instruction；
The speed of crankshaft of engine is reduced to the first rotary speed threshold value；
Starter is controlled by rotating speed control mode；
Collecting crankshaft revolving speed and crank position；
Driving duration when crankshaft to be stopped to top dead centre is judged by speed of crankshaft and crank position；
According to driving duration, speed of crankshaft is gradually decreased by starter, until crankshaft is stopped on the position of top dead centre.
2. engine on-off control method according to claim 1, it is characterised in that：When receiving engine instruction,
This method further includes that the revolving speed of crankshaft is reduced to the first rotary speed threshold value by torque control mode.
3. engine on-off control method according to claim 1, it is characterised in that：At the position of collecting crankshaft, adopt
Collect position of the particular cylinder block inside crankshaft relative to top dead centre to be after engine stop stopped at the crankshaft in the particular cylinder block
On the position of top dead centre.
4. engine on-off control method according to claim 3, it is characterised in that：When the engine is started, according to spy
Fixed ignition order starts engine, and lights a fire first to the particular cylinder block.
5. engine on-off control method according to claim 1, it is characterised in that：At collecting crankshaft position, also
Include the following steps：
Position of each cylinder body inside crankshaft relative to top dead centre is acquired, the crankshaft cylinder nearest relative to the position of top dead centre is selected
Body；
When driving when the crankshaft for the cylinder body selected by the judgement of the crank position of the cylinder body selected reaches top dead centre
It is long；
Speed of crankshaft is gradually decreased by starter, until the crankshaft for the cylinder body selected is stopped on the position of top dead centre,
And store the corresponding serial number of the cylinder body selected.
6. engine on-off control method according to claim 5, it is characterised in that：When the engine is started, according to upper
The serial number of the cylinder body stored when secondary shutdown adjusts engine entirety ignition order, and carries out a little to the corresponding cylinder body of the serial number first
Fire.
7. a kind of engine start/stop control device, it is characterised in that：Including starter, engine, control unit and crank position
Sensor；
The starter is connected by drive belt train with the engine；
Described control unit receives the stopping signal of the engine, and controls the engine stop oil spout igniting, same to time control
It makes the starter and the speed of crankshaft of the engine is reduced to the first rotary speed threshold value；
Described control unit controls the starter and enters rotating speed control mode；
Described control unit by the crankshaft position sensor acquire the engine crankshaft revolving speed and crankshaft position,
And driving duration when crankshaft to be stopped to top dead centre is judged according to the revolving speed of the engine crankshaft and crankshaft volume position；
Described control unit gradually decreases turning for the crankshaft of the engine according to the driving duration, by the starter
The crankshaft of the engine is stopped on the position of top dead centre by speed.
8. engine start/stop control device according to claim 7, it is characterised in that：Described control unit acquires engine
Position of the crankshaft relative to top dead centre in particular cylinder block, and when the engine is shut down, by the song in the particular cylinder block
Axis is stopped on the position of top dead centre.
9. engine start/stop control device according to claim 7, it is characterised in that：Described control unit acquires the hair
Position of all cylinder body inside crankshafts of motivation relative to top dead centre, and select the crankshaft cylinder body nearest relative to top dead center position；
Position of the described control unit according to the cylinder body inside crankshaft selected relative to top dead centre obtains the cylinder body introversion selected
Axis is stopped at driving duration when top dead centre, and when the engine is shut down, the intracorporal crankshaft of the cylinder selected is stopped at only
On the position of point, and store the corresponding serial number of the cylinder body selected.
10. a kind of vehicle, it is characterised in that：The vehicle includes engine start/stop described in any one of claim 7 to 9
Control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810638229.6A CN108915884B (en) | 2018-06-20 | 2018-06-20 | Engine start-stop control method and device and vehicle with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810638229.6A CN108915884B (en) | 2018-06-20 | 2018-06-20 | Engine start-stop control method and device and vehicle with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108915884A true CN108915884A (en) | 2018-11-30 |
| CN108915884B CN108915884B (en) | 2020-08-18 |
Family
ID=64421535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810638229.6A Active CN108915884B (en) | 2018-06-20 | 2018-06-20 | Engine start-stop control method and device and vehicle with same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115977814A (en) * | 2023-01-04 | 2023-04-18 | 中国第一汽车股份有限公司 | Vehicle engine crankshaft position identification method and device |
| CN118107556A (en) * | 2024-04-28 | 2024-05-31 | 中国第一汽车股份有限公司 | Control method and device for hybrid power automobile power system and computer equipment |
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| JP2009062959A (en) * | 2007-09-10 | 2009-03-26 | Mazda Motor Corp | Control device of diesel engine |
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| CN118107556A (en) * | 2024-04-28 | 2024-05-31 | 中国第一汽车股份有限公司 | Control method and device for hybrid power automobile power system and computer equipment |
| CN118107556B (en) * | 2024-04-28 | 2024-10-18 | 中国第一汽车股份有限公司 | Control method and device for hybrid power automobile power system and computer equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108915884B (en) | 2020-08-18 |
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