KR101666115B1 - Emergency braking system for vehicle - Google Patents

Emergency braking system for vehicle Download PDF

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Publication number
KR101666115B1
KR101666115B1 KR1020150048863A KR20150048863A KR101666115B1 KR 101666115 B1 KR101666115 B1 KR 101666115B1 KR 1020150048863 A KR1020150048863 A KR 1020150048863A KR 20150048863 A KR20150048863 A KR 20150048863A KR 101666115 B1 KR101666115 B1 KR 101666115B1
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KR
South Korea
Prior art keywords
retarder
vehicle
emergency braking
brake
fluid
Prior art date
Application number
KR1020150048863A
Other languages
Korean (ko)
Inventor
송준용
홍순석
김상태
Original Assignee
한국파워트레인 주식회사
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Priority to KR1020150048863A priority Critical patent/KR101666115B1/en
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Publication of KR101666115B1 publication Critical patent/KR101666115B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Of Braking Force In Braking Systems (AREA)
  • Regulating Braking Force (AREA)

Abstract

The present invention relates to an emergency braking system for a vehicle and, more specifically, relates to an emergency braking system for a vehicle, which comprises: a retarder connected to a drive shaft of a vehicle to generate deceleration torque; a retarder controller controlling operation of the retarder; and an emergency braking switch installed in the vehicle, connected to the retarder controller, and enabling the retarder to be operated by operation of a driver. Therefore, the emergency braking system for a vehicle can be applied as a safety device in case of emergency such as a brake defect while the vehicle is driven.

Description

[0001] Emergency braking system for vehicle [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency braking device for a vehicle, and more particularly, to an emergency braking device for a vehicle that can be applied as a safety device in an emergency, such as a brake failure during running of the vehicle.

In the last 10 years, brake defects accounted for 36.5% of the total number of technical defects related to the vehicle. In particular, accidents caused by brake defects are very likely to lead to fatalities such as death.

 In addition, currently passenger vehicles use friction type main brakes during operation, and in case of main brake failure, the countermeasures are limited to the engine brakes, but the braking force is insufficient only with engine brakes while driving at high speed.

Accordingly, in the " emergency braking assistance device ", which is a Korean registered patent 1262419, in order to solve the problem that sufficient braking force can not be obtained when the brake pedal is operated several times in an emergency such as when the engine is stopped during running of the vehicle, When the pedal is operated, a sufficiently high hydraulic pressure is generated by the brake operation force of the driver by using the toggle mechanism, so that the brake operation force of the driver is transmitted to the brake main body together with the hydraulic pressure discharged from the master cylinder, have. However, this means that the braking force of the brake is lowered due to the stop of the engine. If the brake is defective and the brake is not operated, there is a problem that it can not be applied to the emergency braking device.

KR 10-1262419 B1 (2013.05.02.)

SUMMARY OF THE INVENTION It is an object of the present invention to provide an emergency braking device for a vehicle which can safely braking a vehicle by applying it as a safety device in the event of an emergency such as a brake failure during running of the vehicle will be.

According to an aspect of the present invention, there is provided an emergency braking apparatus for a vehicle, comprising: a retarder connected to a drive shaft of a vehicle to generate a deceleration torque; A retarder controller for controlling operation of the retarder; And an emergency braking switch installed in the interior of the vehicle and connected to the retarder controller to allow the retarder to be operated by a driver's operation; And a control unit.

Further, the retarder is characterized by being a fluid type retarder or an electronic retarder.

In addition, when the litter is a fluid type retarder, the accumulator further includes an accumulator connected to the retarder to supply the fluid to the retarder.

The apparatus may further include a hydraulic pump connected to the accumulator and capable of filling a pressure fluid in the accumulator.

A valve is provided on a line connecting the inlet side of the retarder and the accumulator, a valve is provided on an outlet side of the retarder, and the valves are connected to the retarder controller to control opening and closing.

The emergency braking switch may be installed on any one of a handle, a center pedal, and a dashboard of the vehicle.

Further, the emergency braking switch is installed in the brake of the vehicle, and the emergency braking switch is operated in a state in which the brake is maximally depressed.

The emergency braking system for a vehicle according to the present invention is advantageous in that it can safely brak down a vehicle by applying it as a safety device in an emergency such as a brake deficiency while the vehicle is running, thereby reducing the risk of accidents.

1 is a schematic view showing an emergency braking device for a vehicle according to the present invention;
FIG. 2 and FIG. 3 are schematic views showing a configuration in which the retarder according to the present invention is a fluid type retarder, and an accumulator for separately supplying the fluid to the retarder is separately provided.
4 is a braking force diagram comparing the braking force when the retarder is applied to the emergency braking device for a vehicle according to the present invention as compared with a conventional engine brake.
FIG. 5 is a graph showing a simulation of a vehicle behavior when a retarder is applied to an emergency braking system for a vehicle according to the present invention as compared with a conventional engine brake.
6 is a graph comparing braking distances until deceleration at a speed of 20 km / h when a retarder is applied to an emergency braking system for a vehicle according to the present invention as compared with a conventional engine brake.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An emergency braking device for a vehicle according to the present invention will now be described in detail with reference to the accompanying drawings.

Fig. 1 is a schematic view showing an emergency braking device for a vehicle according to the present invention. Fig. 2 and Fig. 3 are schematic views showing a configuration in which a retarder according to the present invention is a fluid type retarder and an accumulator for supplying fluid to the retarder is separately provided to be.

As shown in the drawings, an emergency braking system 1000 for a vehicle according to an embodiment of the present invention includes a retarder 100 connected to a drive shaft of a vehicle to generate a deceleration torque; A retarder controller 400 for controlling the operation of the retarder 100; An emergency braking switch 500 installed in a vehicle interior and connected to the retarder controller 400 to allow the retarder 100 to be operated by a driver's operation; . ≪ / RTI >

First, the driving shaft 600 is connected to the engine 800 and the transmission 700 of the vehicle, and the driving wheel 620 is connected to the driving shaft 600 to drive the vehicle. The drive gear 610 installed on the drive shaft 600 is coupled with the connection gear 120 of the retarder 100 so that the deceleration torque is transmitted to the drive shaft 600 when the retarder 100 is operated . That is, the retarder 100 serves as an auxiliary braking device connected to the drive shaft 600 of the vehicle to generate a deceleration torque.

Here, the retarder 100 may be configured such that the rotor R is connected to the connecting shaft 120 through the first shaft 110, and the rotor R is rotated together with the driving shaft 600. [ At this time, the rotor R may be connected to an input shaft or an output shaft of the transmission 700 instead of the drive shaft 600, and may be rotated, and may be connected to various parts so that a deceleration torque is transmitted to the drive wheels 620 of the vehicle have. The stator S is spaced apart from the rotor R and the second shaft 130 connected to the stator S may be fixed.

The retarder controller 400 is provided at one side of the retarder 100 to control the operation of the retarder 100.

The emergency braking switch 500 may be installed in the vehicle interior and the emergency braking switch 500 may be connected to the retarder controller 400 so that the retarder 100 may be operated by the driver.

When the driver senses a fault (abnormality) of the brake during running, the emergency brake switch 500 is turned on by pressing the signal to the retarder controller 400 and the retarder controller 400 drives the retarder 100 ). At this time, a deceleration torque is transmitted to the drive shaft 600 of the vehicle by the operation of the retarder 100 to generate a braking force, and when the brake is not operated due to a defect or a failure, Can be safely braked.

Accordingly, the emergency braking system for a vehicle according to the present invention can be applied as a safety device in an emergency such as a brake failure during running of the vehicle. Even when the engine is stopped during the running of the vehicle and the brake is not operated well, It is possible to increase the safety.

At this time, since the retarder is mounted on a commercial vehicle or a bus, it is possible to install an emergency braking switch in a vehicle equipped with a retarder and connect it to the retarder control unit. In the case of a vehicle without a retarder, A retarder equipped with a control unit and an emergency braking switch may be provided and used as an emergency braking device.

Wherein the retarder 100 is a fluid type retarder or an electronic retarder, and when the litter 100 is a fluid type retarder, the retarder 100 is connected to the retarder 100 to supply the fluid to the retarder 100 And an accumulator 200 that can be used to control the temperature of the exhaust gas.

In other words, the retarder 100 may use various types of retarders such as an electric retarder and a fluid retarder. At this time, an electronic retarder can be mounted on a compact vehicle requiring a relatively low braking force, and a fluid type retarder can be mounted on a large vehicle requiring a relatively high braking force. It is preferable to use a fluid type retarder capable of generating a deceleration torque even if the engine is not operated since the fluid type retarder can continuously generate a deceleration torque once the fluid is filled in the fluid type retarder. The fluid to be filled in the operation of the vehicle may be configured in various ways such as a method of using cooling water of the vehicle or a method of supplying a separate fluid. At this time, the accumulator 200 filled with the pressure fluid may be connected to the retarder 100 to rapidly supply the fluid to the fluid type retarder so that the braking force can be generated quickly in the event of an emergency (shortening the braking reaction time). In addition to the accumulator, a pressure tank filled with a pressure fluid may be used.

The apparatus may further include a hydraulic pump 300 connected to the accumulator 200 to fill the accumulator 200 with pressure fluid.

That is, while the brakes of the vehicle are normally operated, the accumulator 200 is filled with the pressure fluid by using the hydraulic pump 300, and the fluid of the accumulator 200 is supplied to the retarder 100 in an emergency and braked, When the brake is operated, the accumulator 200 is filled with the pressure fluid by using the hydraulic pump 300 to supply the fluid to the retarder 100 through the accumulator 200 during the emergency braking, have.

A valve 210 is provided on a line connecting the inlet of the retarder 100 and the accumulator 200. A valve 220 is provided on an outlet side of the retarder 100, 210 and 220 may be connected to the retarder controller 400 to control opening and closing.

That is, the opening and closing of the valves 210 and 220 is controlled by the retarder controller 400 so that the fluid can be supplied to the retarder 100 when the emergency braking is performed or the fluid in the retarder 100 can be discharged after the emergency braking is completed . In this case, the flow rate of the fluid supplied into the retarder 100 may be adjusted by adjusting the opening area of the valves 210 and 220. In the figure, the valves 210 and 220 are installed separately from the retarder 100, Valves 210 and 220 may be formed in the interior of the body 100. When the emergency brake switch 500 is turned on, the retarder controller 400 controls the valves 210 and 220 to allow the fluid to flow quickly into the retarder 100, When the brake switch 500 is turned OFF, the fluid in the retarder 100 can be quickly discharged to the outside. The retarder controller 400 is connected to an electronic control unit (ECU) of the vehicle, so that the speed of the vehicle is controlled by controlling the degree of the deceleration torque according to the amount of the fluid filled in the retarder 100. Therefore, And adjust the amount of the fluid flowing into the retarder 100 according to the speed of the vehicle to adjust the degree of the braking force according to the speed of the vehicle, so that the braking can be smoothly and quickly performed.

Also, the emergency braking switch 500 may be installed in any one of a steering wheel, a center pedal, and a dashboard of the vehicle.

That is, it can be installed at various positions such as a handle of a vehicle, a center fascia, and a dashboard, which are easy to press, so that a braking operation can be performed by operating the emergency brake switch 500 by a driver in an emergency.

Also, the emergency braking switch 500 is installed in the brakes of the vehicle, and the emergency braking switch 500 can be operated in a state where the brakes are maximally depressed.

That is, when an emergency occurs in which the brake is not operated due to a brake failure during driving of the vehicle, the driver is confused and the brake pedal is depressed several times even though the brake is not operated. The emergency brake switch 500 is installed in the brake and the emergency brake switch 500 is operated when the driver presses the pedal of the brake 500 all the way down in an emergency when the pedal is fully depressed Emergency braking can be performed.

FIG. 4 is a graph showing a braking force diagram obtained by comparing the braking force when the retarder is applied to the vehicle emergency braking system according to the present invention as compared with the conventional engine brake. As shown in the figure, the retarder according to the present invention is applied to a passenger vehicle, The braking force can be increased by up to 350% compared with the case where only the engine brake is used.

FIG. 5 is a graph showing a simulation of a vehicle behavior when a retarder is applied to an emergency braking system for a vehicle according to the present invention as compared with a conventional engine brake. As shown in the figure, The reduction ratio can be increased more than three times when braking is performed by using the retarder which is the emergency braking device of the present invention, as compared with braking using the engine brake when the failure (non-operation) occurs.

6 is a graph comparing braking distances until deceleration at a speed of 20 km / h when the retarder is applied to the emergency braking system for a vehicle according to the present invention as compared with the conventional engine brakes. As shown in the figure, .

As described above, the emergency braking apparatus for a vehicle according to the present invention can be applied as a safety device in an emergency such as a brake failure during running of the vehicle, so that the vehicle can be safely braked, thereby reducing the risk of accidents.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It goes without saying that various modifications can be made.

1000: Emergency braking system for vehicles
100: retarder
110: first shaft 120: connecting gear
130: 2nd axis
R: Rotor
S: stator
200: accumulator
210, 220: valve
300: Hydraulic pump
400: retarder controller
500: Emergency brake switch
600: drive shaft
610: driving gear 620: driving wheel (wheel)
700: transmission
800: engine

Claims (7)

A retarder connected to a drive shaft of the vehicle to generate a deceleration torque;
A retarder controller for controlling operation of the retarder; And
An emergency braking switch installed in an interior of the vehicle and connected to the retarder controller so that the retarder is operated by a driver's operation;
An accumulator connected to the retarder to supply fluid to the retarder;
A hydraulic pump connected to the accumulator and capable of filling a pressure fluid in the accumulator; And,
The retarder is a fluid type retarder,
A valve is provided on a line connecting the inlet side of the retarder and the accumulator, a valve is provided on an outlet side of the retarder, and the valves are connected to the retarder controller to control opening /
When the emergency braking switch is operated, the fluid in the accumulator is supplied to the retarder to be braked. When the emergency braking switch is turned off, the fluid in the retarder To be discharged.
delete delete delete delete The method according to claim 1,
Wherein the emergency braking switch is installed in any one of a steering wheel, a center pedal, and a dashboard of the vehicle.
The method according to claim 1,
Wherein the emergency braking switch is installed in a brake of a vehicle, and the emergency braking switch is operated in a state in which the brake is maximally depressed.
KR1020150048863A 2015-04-07 2015-04-07 Emergency braking system for vehicle KR101666115B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150048863A KR101666115B1 (en) 2015-04-07 2015-04-07 Emergency braking system for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150048863A KR101666115B1 (en) 2015-04-07 2015-04-07 Emergency braking system for vehicle

Publications (1)

Publication Number Publication Date
KR101666115B1 true KR101666115B1 (en) 2016-10-14

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KR1020150048863A KR101666115B1 (en) 2015-04-07 2015-04-07 Emergency braking system for vehicle

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH061211A (en) * 1992-06-22 1994-01-11 Akebono Brake Ind Co Ltd Fluid type retarder control device
JPH0734235U (en) * 1993-12-02 1995-06-23 東洋運搬機株式会社 Auxiliary braking system for industrial vehicles
JPH07315209A (en) * 1994-05-27 1995-12-05 Akebono Brake Ind Co Ltd Brake method of vehicle
KR100916206B1 (en) * 2008-05-29 2009-09-08 현대자동차주식회사 Retarder brake for vehicle
KR101262419B1 (en) 2006-08-17 2013-05-08 현대자동차주식회사 assistant device for emergency brake

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH061211A (en) * 1992-06-22 1994-01-11 Akebono Brake Ind Co Ltd Fluid type retarder control device
JPH0734235U (en) * 1993-12-02 1995-06-23 東洋運搬機株式会社 Auxiliary braking system for industrial vehicles
JPH07315209A (en) * 1994-05-27 1995-12-05 Akebono Brake Ind Co Ltd Brake method of vehicle
KR101262419B1 (en) 2006-08-17 2013-05-08 현대자동차주식회사 assistant device for emergency brake
KR100916206B1 (en) * 2008-05-29 2009-09-08 현대자동차주식회사 Retarder brake for vehicle

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