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WO1997006970A1 - Automatic ride-height control for a vehicle - Google Patents

Automatic ride-height control for a vehicle Download PDF

Info

Publication number
WO1997006970A1
WO1997006970A1 PCT/NL1996/000321 NL9600321W WO9706970A1 WO 1997006970 A1 WO1997006970 A1 WO 1997006970A1 NL 9600321 W NL9600321 W NL 9600321W WO 9706970 A1 WO9706970 A1 WO 9706970A1
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle frame
pair
vehicle
height control
automatic ride
Prior art date
Application number
PCT/NL1996/000321
Other languages
French (fr)
Inventor
Adrianus Theodorus Johannes Bekkers
Original Assignee
Bekkers Adrianus Theodorus Joh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bekkers Adrianus Theodorus Joh filed Critical Bekkers Adrianus Theodorus Joh
Priority to AU66328/96A priority Critical patent/AU6632896A/en
Publication of WO1997006970A1 publication Critical patent/WO1997006970A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
    • B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
    • B60G21/06—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected fluid
    • B60G21/073—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected fluid between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/019—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the type of sensor or the arrangement thereof
    • B60G17/01908—Acceleration or inclination sensors
    • B60G17/01916—Mercury-switch type devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/0195—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the regulation being combined with other vehicle control systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D17/00—Means on vehicles for adjusting camber, castor, or toe-in
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/40—Indexing codes relating to the wheels in the suspensions
    • B60G2200/46—Indexing codes relating to the wheels in the suspensions camber angle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/10—Acceleration; Deceleration
    • B60G2400/102—Acceleration; Deceleration vertical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/30—Height or ground clearance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
    • B60G2800/01—Attitude or posture control
    • B60G2800/019—Inclination due to load distribution or road gradient
    • B60G2800/0194—Inclination due to load distribution or road gradient transversal with regard to vehicle

Definitions

  • the invention relates to an automatic ride-height control for a vehicle, comprising a pair of wheel axles which are hingeably attached to the vehicle frame such that they are height adjustable with respect to the latter.
  • the aim of the invention is to provide a device with which the height of the vehicle frame with respect to the wheels can be adjusted automatically while driving, simply and at relatively low cost. f This aim is achieved according to the present invention in that at
  • 35 least one pair of G-force measuring instruments, which instruments are * attached to the vehicle frame, and at least one pair of adjusting means, which means are fitted, on one side, to the vehicle frame and, on the other side, to one of the wheel axles, are provided.
  • the vehicle frame When taking bends the vehicle frame will lean in the direction of the outside of the bend. This leaning will result in a changing indication or a changing signal from the G-force measuring instrument, which instrument is linked to a computer.
  • the adjusting means can be operated, via a computer, in such a way that the distance between the vehicle frame and the wheel assembly which, when taking the bend, is reduced on that side of the vehicle which is on the outside of the bend is restored to the original magnitude or is made even greater than the original magnitude, as a result of which the coachwork then leans in the unnatural direction in the bend.
  • At least one pair of mercury switches are provided, which switches are attached to the vehicle frame.
  • the adjusting means can, via the computer, which has already been mentioned, be operated on the basis of both the production and the existence of said electrical connection.
  • a second pair of mercury switches can be provided, which switches are arranged at an angle, one on either side of the vehicle frame.
  • control means are provided for setting the wheels at an angle with respect to the associated wheel axles. What can be achieved by means of this facility is that, when taking a bend, either the running surface of the wheels remains parallel to the ground surface or the wheels lean in the unnatural direction, as a result of which the bend can be taken at a higher speed.
  • a computer can be provided to perform the necessary calculations and controls relating to correction of the lean of the vehicle frame, by which means the corrections to be made can also be made automatically.
  • the height corrections are produced by adjusting means arranged between, on one side, the vehicle frame and, on the other side, a damper/spring combination.
  • adjusting means arranged between, on one side, the vehicle frame and, on the other side, a damper/spring combination.
  • the adjusting means can comprise, for example, a hydraulic or pneumatic piston or bellows assembly.
  • the figure shows a cross-sectional view of a vehicle at the location of the driven wheel axles.
  • the vehicle has a vehicle frame 1 and a wheel suspension 2.
  • Said wheel suspension 2 comprises a differential 14, a pair of wheel axles 10a, 10b, a pair of wheel assemblies 13a, 13b, a pair of damper/spring combinations 9a, 9b, a pair of adjusting means 8a, 8b and a pair of control means 12a, 12b.
  • the wheel assemblies 13a, 13b are rotatable to some extent about a horizontal centre line by means of hinges Ila, lib.
  • a pair of G-force measuring instruments 15a, 15b, a computer 16 and two pairs of mercury switches 3 and, respectively, 3a, 3 are arranged on the vehicle frame 1.
  • the mercury switches 3 , 3b are fitted at an angle, one on either side of the vehicle frame 1.
  • the adjusting means 8a and 8b are fitted, on one side, to the vehicle frame 1 and, on the other side, to one of the wheel axles 10a and 10b, respectively, specifically between the vehicle frame 1 and a damper/spring combination 9a and 9b, respectively.
  • the adjusting means 8a, 8b comprise a hydraulic or pneumatic piston or bellows assembly.
  • the control means 12a, 12b serve to set the wheels 13a, 13b at an angle with respect to the associated wheel axles 10a and 10b, respectively.
  • a computer 16 to which the G-force measuring instruments 15a, 15b, as well as the mercury switches 3. 3a and 3b are connected, calculates and controls the desired height for each side of the vehicle and/or setting the wheels 13a, 13b at an angle with respect to the associated wheel axles 10a and 10b, respectively.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

An automatic ride-height control for a vehicle, comprising a pair of wheel axles which are hingeably attached to the vehicle frame such that they are height adjustable with respect to the latter, wherein at least one pair of G-force measuring instruments, which instruments are attached to the vehicle frame, and at least one pair of adjusting means, which means are fitted, on one side, to the vehicle frame and, on the other side, to one of the wheel axles, are provided.

Description

Automatic ride-height control for a vehicle
Description
5 The invention relates to an automatic ride-height control for a vehicle, comprising a pair of wheel axles which are hingeably attached to the vehicle frame such that they are height adjustable with respect to the latter.
It is a generally known phenomenon that vehicles lean when taking 10 bends. The higher the drive speed at which a bend is taken, the greater is the risk of the vehicle overturning as a consequence of this phenomenon, and thus the greater the risk of accidents.
To keep the risk of overturning when taking a bend low it can be elected to take the bend at a lower drive speed, which is a practice that 15 is not always adopted to a sufficient degree by every driver and that increases the total journey time, often undesirably so in the driver's perception.
Furthermore the natural lean in bends is experienced as uncomfortable by the passengers in the vehicle. 20 If the vehicle is a train, the rails are often laid at somewhat of an angle in bends, with the rails on the outside of the bend laid somewhat higher than the rails on the inside of the bend. This incurs additional costs for laying the track.
It is true that devices are known by means of which the coachwork of 25 a vehicle is held upright, or even brought into an unnatural inclination, in bends, but these are complex and expensive mechanical and/or electronic devices. If a mechanical device is fitted, this usually results in a vehicle construction which deviates substantially from that of the vehicles generally known today, as a consequence of which said 30 device is not simple to use with existing vehicle designs.
The aim of the invention is to provide a device with which the height of the vehicle frame with respect to the wheels can be adjusted automatically while driving, simply and at relatively low cost. f This aim is achieved according to the present invention in that at
35 least one pair of G-force measuring instruments, which instruments are * attached to the vehicle frame, and at least one pair of adjusting means, which means are fitted, on one side, to the vehicle frame and, on the other side, to one of the wheel axles, are provided. When taking bends the vehicle frame will lean in the direction of the outside of the bend. This leaning will result in a changing indication or a changing signal from the G-force measuring instrument, which instrument is linked to a computer. On the basis of the generation and/or existence of said indication or said signal, the adjusting means can be operated, via a computer, in such a way that the distance between the vehicle frame and the wheel assembly which, when taking the bend, is reduced on that side of the vehicle which is on the outside of the bend is restored to the original magnitude or is made even greater than the original magnitude, as a result of which the coachwork then leans in the unnatural direction in the bend.
According to another aspect of the invention, at least one pair of mercury switches are provided, which switches are attached to the vehicle frame. When the vehicle frame leans in the direction of the outside of the bend this will result in displacement of the mercury droplet in the mercury switch, specifically such that the mercury droplet produces an electrical connection between two contact points. The adjusting means can, via the computer, which has already been mentioned, be operated on the basis of both the production and the existence of said electrical connection.
In order to control the point in time at which, and the degree to which, the position of the vehicle frame is restored with respect to one of the wheel assemblies, a second pair of mercury switches can be provided, which switches are arranged at an angle, one on either side of the vehicle frame.
According to another aspect of the invention, control means are provided for setting the wheels at an angle with respect to the associated wheel axles. What can be achieved by means of this facility is that, when taking a bend, either the running surface of the wheels remains parallel to the ground surface or the wheels lean in the unnatural direction, as a result of which the bend can be taken at a higher speed.
A computer can be provided to perform the necessary calculations and controls relating to correction of the lean of the vehicle frame, by which means the corrections to be made can also be made automatically.
According to another aspect of the invention, the height corrections are produced by adjusting means arranged between, on one side, the vehicle frame and, on the other side, a damper/spring combination. What is achieved as a result of this measure is that the adjusting means form part of the sprung weight of the vehicle and the adjusting means do not have an adverse effect on the shock damping and suspension of the vehicle, which is beneficial for the drive characteristics. The adjusting means can comprise, for example, a hydraulic or pneumatic piston or bellows assembly.
The invention will be illustrated in more detail below with reference to the appended drawing, in which an illustrative embodiment is shown in detail. The figure shows a cross-sectional view of a vehicle at the location of the driven wheel axles. The vehicle has a vehicle frame 1 and a wheel suspension 2. Said wheel suspension 2 comprises a differential 14, a pair of wheel axles 10a, 10b, a pair of wheel assemblies 13a, 13b, a pair of damper/spring combinations 9a, 9b, a pair of adjusting means 8a, 8b and a pair of control means 12a, 12b. The wheel assemblies 13a, 13b are rotatable to some extent about a horizontal centre line by means of hinges Ila, lib.
A pair of G-force measuring instruments 15a, 15b, a computer 16 and two pairs of mercury switches 3 and, respectively, 3a, 3 are arranged on the vehicle frame 1. The mercury switches 3 , 3b are fitted at an angle, one on either side of the vehicle frame 1. The adjusting means 8a and 8b are fitted, on one side, to the vehicle frame 1 and, on the other side, to one of the wheel axles 10a and 10b, respectively, specifically between the vehicle frame 1 and a damper/spring combination 9a and 9b, respectively. The adjusting means 8a, 8b comprise a hydraulic or pneumatic piston or bellows assembly. The control means 12a, 12b serve to set the wheels 13a, 13b at an angle with respect to the associated wheel axles 10a and 10b, respectively. A computer 16, to which the G-force measuring instruments 15a, 15b, as well as the mercury switches 3. 3a and 3b are connected, calculates and controls the desired height for each side of the vehicle and/or setting the wheels 13a, 13b at an angle with respect to the associated wheel axles 10a and 10b, respectively.

Claims

Claims
1. Automatic ride-height control for a vehicle, comprising a pair of wheel axles which are hingeably attached to the vehicle frame such that they are height adjustable with respect to the latter, characterised in that at least one pair of G-force measuring instruments (15a; 15b), which instruments are attached to the vehicle frame (1), and at least one pair of adjusting means (8a; 8b), which means are fitted, on one side, to the vehicle frame (1) and, on the other side, to one of the wheel axles (10a; 10b), are provided.
2. Automatic ride-height control according to Claim 1, characterised in that at least one pair of mercury switches (3) are provided, which switches are attached to the vehicle frame (1).
3. Automatic ride-height control according to Claim 2, characterised in that a second pair of mercury switches (3a; 3b) are provided, the switches of said second pair being arranged at an angle, one on either side of the vehicle frame.
4. Automatic ride-height control according to one of the preceding claims, wherein the wheels are fitted on the wheel axles such that they are hingeable about a horizontal centre line, characterised in that control means (12a; 12b) are provided for setting the wheels (13a; 13b) at an angle with respect to the associated wheel axles (10a; 10b).
5. Automatic ride-height control according to one of the preceding claims, characterised in that a computer is provided for calculating and controlling the desired height for each side of the vehicle and/or setting the wheels (13a; 13b) at an angle with respect to the associated wheel axles (10a; 10b).
6. Automatic ride-height control according to one of the preceding claims, wherein a damper/spring combination is provided for each wheel assembly, characterised in that the adjusting means (8a; 8b) are fitted, on one side, to the vehicle frame (1) and, on the other side, to one damper/spring combination (9a; 9b) .
7. Automatic ride-height control according to one of the preceding claims, characterised in that the adjusting means (8a; 8b) comprise a hydraulic or pneumatic piston or bellows assembly.
8. Automatic ride-height control according to one of Claims 4-7, characterised in that the control means (12a; 12b) comprise a hydraulic or pneumatic piston or bellows assembly.
PCT/NL1996/000321 1995-08-15 1996-08-14 Automatic ride-height control for a vehicle WO1997006970A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU66328/96A AU6632896A (en) 1995-08-15 1996-08-14 Automatic ride-height control for a vehicle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1000983A NL1000983C2 (en) 1995-08-15 1995-08-15 Automatic level control for a vehicle.
NL1000983 1995-08-15

Publications (1)

Publication Number Publication Date
WO1997006970A1 true WO1997006970A1 (en) 1997-02-27

Family

ID=19761440

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1996/000321 WO1997006970A1 (en) 1995-08-15 1996-08-14 Automatic ride-height control for a vehicle

Country Status (3)

Country Link
AU (1) AU6632896A (en)
NL (1) NL1000983C2 (en)
WO (1) WO1997006970A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10245914B2 (en) 2017-03-24 2019-04-02 Cnh Industrial America Llc Controlling ground clearance in a self-propelled agricultural product applicator

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2678830A (en) * 1950-02-03 1954-05-18 Cigan Andrew Automotive frame suspension
US3876012A (en) * 1972-01-18 1975-04-08 Excel Ind Anti-overturning implement vehicle
US3937339A (en) * 1971-10-29 1976-02-10 Koehring Company Vehicle having transverse leveling means
JPS57158113A (en) * 1981-03-24 1982-09-29 Hino Motors Ltd Air suspension for automobile
JPS59179414A (en) * 1983-03-29 1984-10-12 Mitsuwa Seiki Co Ltd Shock absorber
JPS59206261A (en) * 1983-05-10 1984-11-22 Kayaba Ind Co Ltd Four-wheel steering mechanism
JPS6015213A (en) * 1983-07-06 1985-01-25 Nissan Motor Co Ltd suspension system
JPS61218412A (en) * 1985-03-23 1986-09-27 Daihatsu Motor Co Ltd Vehicle attitude control device
JPS6325118A (en) * 1986-07-17 1988-02-02 Tokico Ltd Suspention
JPH04135912A (en) * 1990-09-28 1992-05-11 Mazda Motor Corp Vehicle suspension device
JPH04169316A (en) * 1990-10-31 1992-06-17 Aisin Seiki Co Ltd Controller of shock absorber
JPH0532114A (en) * 1991-07-31 1993-02-09 Nissan Motor Co Ltd Vehicle corner control device
JPH05162525A (en) * 1991-10-15 1993-06-29 Kayaba Ind Co Ltd Vehicle height adjustment device
JPH07125521A (en) * 1993-10-29 1995-05-16 Mitsubishi Motors Corp Roll control device for active suspension for tractor
JPH07186671A (en) * 1993-12-28 1995-07-25 Nissan Motor Co Ltd Suspension controller

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2678830A (en) * 1950-02-03 1954-05-18 Cigan Andrew Automotive frame suspension
US3937339A (en) * 1971-10-29 1976-02-10 Koehring Company Vehicle having transverse leveling means
US3876012A (en) * 1972-01-18 1975-04-08 Excel Ind Anti-overturning implement vehicle
JPS57158113A (en) * 1981-03-24 1982-09-29 Hino Motors Ltd Air suspension for automobile
JPS59179414A (en) * 1983-03-29 1984-10-12 Mitsuwa Seiki Co Ltd Shock absorber
JPS59206261A (en) * 1983-05-10 1984-11-22 Kayaba Ind Co Ltd Four-wheel steering mechanism
JPS6015213A (en) * 1983-07-06 1985-01-25 Nissan Motor Co Ltd suspension system
JPS61218412A (en) * 1985-03-23 1986-09-27 Daihatsu Motor Co Ltd Vehicle attitude control device
JPS6325118A (en) * 1986-07-17 1988-02-02 Tokico Ltd Suspention
JPH04135912A (en) * 1990-09-28 1992-05-11 Mazda Motor Corp Vehicle suspension device
JPH04169316A (en) * 1990-10-31 1992-06-17 Aisin Seiki Co Ltd Controller of shock absorber
JPH0532114A (en) * 1991-07-31 1993-02-09 Nissan Motor Co Ltd Vehicle corner control device
JPH05162525A (en) * 1991-10-15 1993-06-29 Kayaba Ind Co Ltd Vehicle height adjustment device
JPH07125521A (en) * 1993-10-29 1995-05-16 Mitsubishi Motors Corp Roll control device for active suspension for tractor
JPH07186671A (en) * 1993-12-28 1995-07-25 Nissan Motor Co Ltd Suspension controller

Non-Patent Citations (12)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 006, no. 267 (M - 182) 25 December 1982 (1982-12-25) *
PATENT ABSTRACTS OF JAPAN vol. 009, no. 038 (M - 358) 19 February 1985 (1985-02-19) *
PATENT ABSTRACTS OF JAPAN vol. 009, no. 077 (M - 369) 6 April 1985 (1985-04-06) *
PATENT ABSTRACTS OF JAPAN vol. 009, no. 132 (M - 385) 7 June 1985 (1985-06-07) *
PATENT ABSTRACTS OF JAPAN vol. 011, no. 057 (M - 564) 21 February 1987 (1987-02-21) *
PATENT ABSTRACTS OF JAPAN vol. 012, no. 229 (M - 714) 29 June 1988 (1988-06-29) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 405 (M - 1301) 26 August 1992 (1992-08-26) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 471 (M - 1318) 30 September 1992 (1992-09-30) *
PATENT ABSTRACTS OF JAPAN vol. 017, no. 316 (M - 1430) 16 June 1993 (1993-06-16) *
PATENT ABSTRACTS OF JAPAN vol. 017, no. 565 (M - 1495) 13 October 1993 (1993-10-13) *
PATENT ABSTRACTS OF JAPAN vol. 95, no. 005 *
PATENT ABSTRACTS OF JAPAN vol. 95, no. 007 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10245914B2 (en) 2017-03-24 2019-04-02 Cnh Industrial America Llc Controlling ground clearance in a self-propelled agricultural product applicator

Also Published As

Publication number Publication date
NL1000983C2 (en) 1997-02-18
AU6632896A (en) 1997-03-12

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