WO1995032114A1 - Antilock braking system operating directly on the servo brake by a valve placed on the section connecting to the motor - Google Patents

Antilock braking system operating directly on the servo brake by a valve placed on the section connecting to the motor Download PDF

Info

Publication number
WO1995032114A1
WO1995032114A1 PCT/IT1995/000077 IT9500077W WO9532114A1 WO 1995032114 A1 WO1995032114 A1 WO 1995032114A1 IT 9500077 W IT9500077 W IT 9500077W WO 9532114 A1 WO9532114 A1 WO 9532114A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
braking system
motor
antilock braking
servo brake
Prior art date
Application number
PCT/IT1995/000077
Other languages
French (fr)
Inventor
Luigi Chiaro
Rosario Notarangelo
Original Assignee
Luigi Chiaro
Rosario Notarangelo
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 Luigi Chiaro, Rosario Notarangelo filed Critical Luigi Chiaro
Priority to AU26641/95A priority Critical patent/AU2664195A/en
Publication of WO1995032114A1 publication Critical patent/WO1995032114A1/en

Links

Classifications

    • 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
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/44—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device, i.e. open systems
    • B60T8/447—Reducing the boost of the power-assist booster means to reduce brake pressure
    • B60T8/448—Reducing the boost of the power-assist booster means to reduce brake pressure the power-assist booster means being a vacuum or compressed air booster

Definitions

  • ABS antilock braking systems
  • An ABS system is equipped with an electronic gearcase which, through signals coming from sensors placed in preference on the wheel hubs, checks the speed of every wheel comparing it with the speed of the car If a wheel locks, this ABS system looses it for a moment.
  • the electronic gearcase transmits the processing data to an hydraulic gearcase which, through an hydraulic circuit, checks the pressure to send to the braking components placed on the wheels.
  • the hydraulic gearcase is connected to the servo brake and it amplifies the force applied to the brake pedal.
  • the object of this patent on industrial invention is the proposal of a new antilock system operating directly en the servo Drake without the hydraulic gearcase and its connecting circuit.
  • the drawning of this antilock system is on the Tab 1/1 ( Fig 1.)
  • a further valve (9) is placed on tie pipeline (1) and checks the suction pressure applied to it.
  • Figs 2 and 3 show the valve (4), operated by a motor (5), both during the breaking suction pressure and during the normal suction pressure.
  • the valve (4) on the suction pipeline conneding the motor to the servo brake, allows, when open, to release some suction pressure of the servo brake, decreasing the braking effect and loosening the wheels.
  • the motor (5) will be operated by the vake (8) which, placed on the front braking circuit, senses the locking of the wheels. In any case this valve (8) operates the motor if the pressure is over the setting point.
  • the motor could also be operated by a lock sensor applied to the brakes calipers.
  • the drawning shows a valve to sense the locking of the wheels only on the front braking system but obviously that valve can be also placed on the braking circuit of the rear wheels, in order to obtain a better effect.
  • valve can be replaced by a lock sensor placed on the wheels.

Abstract

The present antilock brake system is equipped with a valve (4) in the vacuum line (1) connecting the servo booster (3) to the engine (2). The valve (4) is operated by a motor (5) connected to a pressure responsive means (8) in one of the brake circuits (7) or to the wheel speed sensors. When the wheels are locked during braking, the valve (4) causes a decrease of the vacuum inside the brake booster (3), thereby reducing the brake pressure.

Description

ANTILOCK BRAKING SYSTEM OPERATING DIRECTLY ON THE SERVO BRAKE BY A VALVE PLACED ON THE SECTION CONNECTING TO THE MOTOR.
The antilock braking systems, known as ABS, both reduce the braking distance and assure at the most the vehicle directional control stability. An ABS system is equipped with an electronic gearcase which, through signals coming from sensors placed in preference on the wheel hubs, checks the speed of every wheel comparing it with the speed of the car If a wheel locks, this ABS system looses it for a moment.
The electronic gearcase transmits the processing data to an hydraulic gearcase which, through an hydraulic circuit, checks the pressure to send to the braking components placed on the wheels. The hydraulic gearcase is connected to the servo brake and it amplifies the force applied to the brake pedal.
The object of this patent on industrial invention is the proposal of a new antilock system operating directly en the servo Drake without the hydraulic gearcase and its connecting circuit. The drawning of this antilock system is on the Tab 1/1 ( Fig 1.)
On the suction pipeline (1), connecting the motor (2) to Ihe servo brake(3) there is a valve (4) operated by the electric motor (5); the brakes pump (6) is connected to the front wheels by means of the hydraulic pipeline (7), on which there is a valve (8) checking the braking system.
A further valve (9) is placed on tie pipeline (1) and checks the suction pressure applied to it.( Figs 2 and 3 ) show the valve (4), operated by a motor (5), both during the breaking suction pressure and during the normal suction pressure. The valve (4), on the suction pipeline conneding the motor to the servo brake, allows, when open, to release some suction pressure of the servo brake, decreasing the braking effect and loosening the wheels.
The motor (5) will be operated by the vake (8) which, placed on the front braking circuit, senses the locking of the wheels. In any case this valve (8) operates the motor if the pressure is over the setting point.
The motor could also be operated by a lock sensor applied to the brakes calipers.
When the wheels are loosened, by means of the suction pressure reduction the 5 valve (8) will operate the motor (5) to return the valve (4) to normal suction presslon. Reduction and reset of the braking action will often repeat during the braking, whenever the locking of the wheels occurs. Our antilock braking system is easier than the traditional ABS syslem : il doesn'l need the hydraulic gearcase, the electronic gearcase or their connecling circuit. -jO Our system includes few and simple components and for these reasons it's very economical both during the installation and to adjust cars without ABS. This also makes it very reliable.
The drawning shows a valve to sense the locking of the wheels only on the front braking system but obviously that valve can be also placed on the braking circuit of the rear wheels, in order to obtain a better effect.
As mentioned above the valve can be replaced by a lock sensor placed on the wheels.
It's possible to change this invention formally and structuraliy, however you need to maintain the following claims

Claims

1) Antilock braking system set to operate a reduction of the suction pressure in the servo brake when Ihe wheels lock.
2) Antilock braking system, satisfying the above claim, relieving and reloading the suction pressure in the servo brake through a valve (4) placed on the section connecting to the suction, operated by an electric motor.
3) Antilock braking system, satisfying Ihe above claims, in which the action of the motor,, operating the valve (4), is worked by a valve (8) placed on the braking of the front wheels.
4) Antilock braking system, satisfying the above claims in which the valve (8) can also be placed on Ihe braking circuit of the rear wheels.
5) Antilock braking system, satisfying the above claims, in which the function of the valve (4) can be worked by a sensor placed on the wheels.
6) Antilock braking system, satisfying the above claims, equipped with a valve (9) checking the suction pressure on the pipeline, which connects Ihe motor to the servo brake.
PCT/IT1995/000077 1994-05-24 1995-05-16 Antilock braking system operating directly on the servo brake by a valve placed on the section connecting to the motor WO1995032114A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU26641/95A AU2664195A (en) 1994-05-24 1995-05-16 Antilock braking system operating directly on the servo brake by a valve placed on the section connecting to the motor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITNA94A000015 1994-05-24
ITNA940015A IT1275396B (en) 1994-05-24 1994-05-24 ANTI-LOCK SYSTEM FOR BRAKES ACTING DIRECTLY ON THE SELF-BRAKE THROUGH A VALVE ON THE SECTION THAT CONNECTS IT TO THE ENGINE

Publications (1)

Publication Number Publication Date
WO1995032114A1 true WO1995032114A1 (en) 1995-11-30

Family

ID=11387639

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT1995/000077 WO1995032114A1 (en) 1994-05-24 1995-05-16 Antilock braking system operating directly on the servo brake by a valve placed on the section connecting to the motor

Country Status (3)

Country Link
AU (1) AU2664195A (en)
IT (1) IT1275396B (en)
WO (1) WO1995032114A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3415578A (en) * 1966-04-15 1968-12-10 Ferguson Res Ltd Harry Vehicle braking systems
FR2623458A1 (en) * 1987-11-25 1989-05-26 Teves Gmbh Alfred DEVICE FOR PRODUCING A DEPRESSION, PARTICULARLY FOR A MOTOR VEHICLE BRAKING SYSTEM
DE3801505A1 (en) * 1988-01-20 1989-07-27 Teves Metallwaren Alfred Antilock brake system with sequential brake pressure modulation
AT391111B (en) * 1986-07-01 1990-08-27 Steyr Daimler Puch Ag Braking device for motor vehicles
DE3909211A1 (en) * 1989-03-21 1990-09-27 Teves Gmbh Alfred Sub-assembly for a motor vehicle antilock brake system
DE3928649A1 (en) * 1989-08-30 1991-03-07 Teves Gmbh Alfred Antilock braking system with sequential pressure modulation - matches wheel brake pressure to desired values independently of modulation in master cylinder
DE4004065A1 (en) * 1990-02-10 1991-08-14 Teves Gmbh Alfred Vehicle anti-locking braking system - has piston position signal for servo device coupled to electronic control unit for magnetic braking regulation valves

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3415578A (en) * 1966-04-15 1968-12-10 Ferguson Res Ltd Harry Vehicle braking systems
AT391111B (en) * 1986-07-01 1990-08-27 Steyr Daimler Puch Ag Braking device for motor vehicles
FR2623458A1 (en) * 1987-11-25 1989-05-26 Teves Gmbh Alfred DEVICE FOR PRODUCING A DEPRESSION, PARTICULARLY FOR A MOTOR VEHICLE BRAKING SYSTEM
DE3801505A1 (en) * 1988-01-20 1989-07-27 Teves Metallwaren Alfred Antilock brake system with sequential brake pressure modulation
DE3909211A1 (en) * 1989-03-21 1990-09-27 Teves Gmbh Alfred Sub-assembly for a motor vehicle antilock brake system
DE3928649A1 (en) * 1989-08-30 1991-03-07 Teves Gmbh Alfred Antilock braking system with sequential pressure modulation - matches wheel brake pressure to desired values independently of modulation in master cylinder
DE4004065A1 (en) * 1990-02-10 1991-08-14 Teves Gmbh Alfred Vehicle anti-locking braking system - has piston position signal for servo device coupled to electronic control unit for magnetic braking regulation valves

Also Published As

Publication number Publication date
ITNA940015A0 (en) 1994-05-24
IT1275396B (en) 1997-08-05
ITNA940015A1 (en) 1995-11-24
AU2664195A (en) 1995-12-18

Similar Documents

Publication Publication Date Title
US6264289B1 (en) Vehicle braking system
US6626271B1 (en) Electrically controlled braking system and associated control method
GB2303186A (en) Controlling the brake system of a vehicle
US5246276A (en) Electronically controlled brake effort proportioning system
US6142583A (en) Anti-locking hydraulic motor vehicle brake system
JPS62292556A (en) Brake system
EP1016574A3 (en) Driver warning of braking malfunction in electro-hydraulic (EHB) braking systems
JPH0349783B2 (en)
JP5038577B2 (en) Stabilizer for automobiles with compressed air actuated brake device
JPH04231242A (en) Hydraulic brake system for automobile with electronic control braking-force distributor and anti-lock controller
EP0230213A3 (en) An arrangement in vehicle hydraulic service brake systems
HU176178B (en) Block prevention control system for vehicle brakes operated by pressure medium, in particular for road vehicles
US6824228B2 (en) Rear-axle demand for use with front push-through in electrohydraulic (EHB) braking systems
JP3366915B2 (en) Control system for vehicle anti-lock brake device
JP2576994B2 (en) Brake system
US6272421B1 (en) Antilock braking system, based on a fuzzy controller, for an electromechanical vehicle braking system
US6749271B1 (en) Brake system for vehicles, especially commercial vehicles
EP0291256A3 (en) Anti-skid braking systems for vehicles
EP0416100A4 (en)
US5176444A (en) Vehicle braking force control system
WO1995032114A1 (en) Antilock braking system operating directly on the servo brake by a valve placed on the section connecting to the motor
JP2003519046A (en) Wheel slip control device and method
US6019439A (en) Method of operating an anti-locking automotive vehicle-brake system
JPS6341272A (en) Brake system
US20030130781A1 (en) Anti-lock braking system (ABS) for vehicles with an additional axle

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AM AT AU BB BG BR BY CA CH CN CZ DE DK EE ES FI GB GE HU JP KE KG KP KR KZ LK LR LT LU LV MD MG MN MW MX NO NZ PL PT RO RU SD SE SI SK TJ TT UA US UZ VN

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): KE MW SD SZ UG AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

NENP Non-entry into the national phase

Ref country code: CA