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WO1997035753A1 - Systeme de regulation de la pression de freinage sans pompe pour automobiles - Google Patents

Systeme de regulation de la pression de freinage sans pompe pour automobiles Download PDF

Info

Publication number
WO1997035753A1
WO1997035753A1 PCT/EP1997/001455 EP9701455W WO9735753A1 WO 1997035753 A1 WO1997035753 A1 WO 1997035753A1 EP 9701455 W EP9701455 W EP 9701455W WO 9735753 A1 WO9735753 A1 WO 9735753A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure medium
pressure
brake
wheel brakes
control system
Prior art date
Application number
PCT/EP1997/001455
Other languages
German (de)
English (en)
Inventor
Uwe Greiff
Hans-Dieter Reinartz
Helmut Steffes
Original Assignee
Itt Manufacturing Enterprises, Inc.
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 Itt Manufacturing Enterprises, Inc. filed Critical Itt Manufacturing Enterprises, Inc.
Publication of WO1997035753A1 publication Critical patent/WO1997035753A1/fr

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
    • B60T8/26—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels
    • B60T8/266—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels using valves or actuators with external control means
    • B60T8/268—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels using valves or actuators with external control means using the valves of an ABS, ASR or ESP system
    • 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
    • B60T8/343—Systems characterised by their lay-out
    • B60T8/344—Hydraulic systems
    • B60T8/348—4 Channel systems
    • 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
    • B60T8/42—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 having expanding chambers for controlling pressure, i.e. closed systems

Definitions

  • the invention relates to a pumpless brake pressure control system for motor vehicles according to the preamble of claim 1.
  • Such a system is already known from DE 43 34 838 AI.
  • This brake system has front and rear wheel brakes which are connected to a master cylinder in diagonal brake circuit division via corresponding pressure medium connections.
  • Pressure modulation valves are assigned to the wheel brakes, which control the pressure medium connection between the master cylinder and the wheel brakes and between the wheel brakes and a pressure medium accumulator assigned to each brake circuit.
  • the pressure medium reservoir is connected between the pressure modulation valves and the master cylinder to the pressure medium connection of each brake circuit.
  • control and regulating electronics are also provided which, if required, establish or separate the pressure medium connection between the master cylinder and the wheel brakes or directly introduce the pressure medium volume in the wheel brakes into a pressure medium storage device.
  • the pressure medium reservoir thus connected to the outlet side of the pressure modulation valves is thus connected in series between the pressure medium connection leading to the master cylinder.
  • Fig. 1 shows the hydraulic circuit diagram of the brake pressure control system according to the invention
  • FIG. 2 the construction of the pressure medium accumulator according to FIG.
  • FIG. 1 shows the hydraulic circuit diagram for a pumpless brake pressure control system for motor vehicles, the wheel brakes VL, VR, HL, HR of which are connected to a master cylinder 10 in a diagonal brake circuit division. Consequently, one of the two pressure elements leading to the wheel brakes branches in each case. Tel connection to a front wheel and diagonally arranged rear brake. Upstream of each wheel brake VL, HR, HL, VR there is a pressure modulation valve 9 'designed as a 2/2-way valve, which in its electromagnetically non-energized basic position has an unimpeded pressure medium connection between the master cylinder 10 and the wheel brake VL, HR assigned to it , HL, VR manufactures.
  • each wheel brake VL, HR, HL, VR Downstream of each wheel brake VL, HR, HL, VR there is also a pressure modulation valve 9 designed as a 2/2-way valve, which, in its electromagnetically non-energized basic position, connects the pressure medium between each wheel brake VL, HR, HL, VR separates.
  • the pressure medium connection of each brake circuit connected to these pressure modulation valves 9 leads back to the master cylinder 10, with a pressure medium reservoir 7 in a pressure medium branch between a check valve 11 opening in the direction of the master cylinder 10 and the pressure modulation valve 9 on the outlet side associated with the wheel brakes pressure medium connection located downstream of the wheel brakes is connected.
  • the pressure medium accumulator 7 has a sensor 4, the function and construction of which can be seen in the following from FIG. 2.
  • the aforementioned check valve 11 is located downstream of the respective brake circuit diagonal connected to the wheel brakes on the input side, so that there is an unobstructed pressure medium path from the master cylinder 10 for pressurizing the wheel brakes and at the same time an overflow of the pressure medium fluid coming from the master cylinder 10 into the pressure medium reservoir 7 of each Brake circuit diagonal is prevented.
  • FIG. 1 corresponds to the normal brake position in which all wheel brakes are hydraulic and free of wheel slippage. are connected to the master cylinder 10.
  • a pressure build-up in the wheel brakes which is unhindered by the pressure modulation valves 9, 9 'is ensured until the pressure modulation valves 9' acting as inlet valves separate the pressure medium connection to the master cylinder 10 by means of the wheel slip values determined from the wheel speeds using control and regulating electronics 12.
  • a constant pre-stressed pressure medium volume thus remains in the wheel brakes, which volume can only relax in the direction of the pressure medium accumulator 7 with the electromagnetically actuated opening of the pressure modulation valve 9, which acts as an outlet valve.
  • the pressure modulation valve 9 assigned to the rear wheel brake is switched to the open position in dependence on a signal from the sensor 4 attached to the pressure medium reservoir 7 by the control and regulating electronics 11, in which a pressure medium connection between the respective rear wheel brake is switched and the pressure medium accumulator 7, while with the help of the control and regulating electronics 11 the pressure modulation valve 9 assigned to the corresponding brake circuit diagonal of the respective front wheel brake remains in the blocking position. From this point in time, only the excess pressure medium volume of the rear wheel brakes is inevitably discharged into the respectively connected pressure medium accumulator 7, which ensures that the rear wheel brakes do not lock and the vehicle thus remains stable. With the help of the control and regulating electronics 11, the degree of filling of the pressure medium store 7 is consequently monitored, evaluated with the aid of the sensor 4 and converted into corresponding control signals for the pressure modulation valves 9, 9 '.
  • the sensor 4 is designed as a position transmitter, for which purpose a reed contact is accommodated in the sensor 4.
  • the sensor 4 is part of a closure body 1, which is inserted into the bore of the pressure medium accumulator 7.
  • the pressure medium store 7 has a piston 6 provided with a magnet 5, which can be displaced along the sensor 4 depending on the degree of filling in the pressure medium store 7.
  • the position of the displacement sensor can be adjusted continuously relative to the piston 6 by means of a threaded piece 3 inserted in the closure body 1.
  • the sensor 4 has a sleeve-shaped housing in which at least one reed contact is accommodated.
  • the sleeve-shaped housing is held at one end in the threaded piece 3, while the opposite end extends into the magnet 5 designed as a ring magnet.
  • the magnet 5 is fastened in a sleeve 2 which is held on the piston 6 under the action of a compression spring 16.
  • the piston 6 In the basic position shown in the illustration, the piston 6 is in abutment against a housing end wall.
  • the housing 13 shown here only in sections preferably accommodates all the other pressure modulation valves 9, 9 'shown in FIG. 1 as well as the check valves 11 with the corresponding associated pressure medium connection channels.
  • the housing bore provided for the pressure medium reservoir 7 receives the essentially sleeve-shaped closure body 1, which is fastened in the housing bore by means of a retaining ring 14.
  • the end of the turn of the compression spring 12 facing away from the piston 6 is supported on an intermediate wall of the sleeve-shaped closure body 1, which is likewise in a coaxial bore. tion receives the threaded piece 3.
  • the reed contact arranged within the sensor 4 is connected to the control and regulating electronics 12 via an electrical connection 15.
  • the outer end section of the closure body 1 is preferably filled with a potting compound 8.
  • a sealing plug or the like can also be used.
  • the construction described has the advantage that the sensor 4 can be precisely adjusted by means of the threaded piece 3. Furthermore, the electrical connection 15 can be passed through the cylindrical threaded piece 3.
  • the sensor 4 is preferably attached to the threaded piece 3 by means of an adhesive connection.
  • the magnet 5 can be held on the sleeve 2 in a relatively simple manner in a positive and / or non-positive manner.
  • a non-contact sensor 4 which in the present example is particularly inexpensively equipped with a reed contact, no forces beyond the action of the compression spring 12 are effective on the piston 6 and the sensor 4 can be wear-free with the magnet 5 work together.
  • the sensor 4 expediently forms a preassembled unit with the closure body 1, which can be fastened in the housing 13 by means of the retaining ring 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Regulating Braking Force (AREA)

Abstract

L'invention concerne un système de régulation de la pression de freinage sans pompe pour automobiles, comportant des freins sur roues avant et sur roues arrière (Arr.D, Arr.G, Av.D, Av.G) raccordés à un maître-cylindre par l'intermédiaire d'une liaison de fluide hydraulique, des soupapes de modulation de la pression (9, 9') associées aux freins sur roues, qui pilotent la liaison du fluide hydraulique entre le maître-cylindre (10) et les freins sur roues, ainsi qu'entre les freins sur roues et au moins un réservoir de fluide hydraulique (7) qui reçoit le fluide hydraulique provenant des freins sur roues lorsque les soupapes de modulation de la pression (9) sont ouvertes. Ce système comprend également une unité électronique de commande et de régulation (12) servant à surveiller et à actionner les soupapes de modulation de la pression (9, 9'). Lorsque le réservoir de fluide hydraulique (7) est rempli partiellement, l'unité électronique de commande et de régulation (2) commute, en fonction d'un signal fourni par un détecteur (4) monté sur le réservoir de fluide hydraulique (7), au moins une soupape de modulation de la pression (9) associée aux freins sur roues arrière (Arr.G; Arr.D) dans une position où la liaison de fluide hydraulique n'existe qu'entre un frein sur roue arrière (Arr.G; Arr.D) et le réservoir de fluide hydraulique (7).
PCT/EP1997/001455 1996-03-23 1997-03-21 Systeme de regulation de la pression de freinage sans pompe pour automobiles WO1997035753A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19611550.7 1996-03-23
DE1996111550 DE19611550A1 (de) 1996-03-23 1996-03-23 Pumpenloses Bremsdruckregelsystem für Kraftfahrzeuge

Publications (1)

Publication Number Publication Date
WO1997035753A1 true WO1997035753A1 (fr) 1997-10-02

Family

ID=7789222

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1997/001455 WO1997035753A1 (fr) 1996-03-23 1997-03-21 Systeme de regulation de la pression de freinage sans pompe pour automobiles

Country Status (2)

Country Link
DE (1) DE19611550A1 (fr)
WO (1) WO1997035753A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2928117A1 (fr) * 2008-03-03 2009-09-04 Peugeot Citroen Automobiles Sa Systeme de freinage permettant la mise en oeuvre d'un procede de controle de stabilite et de trajectoire
FR2928324A1 (fr) * 2008-03-04 2009-09-11 Peugeot Citroen Automobiles Sa Systeme de freinage avec controle de stabilite et de trajectoire.
FR2928326A1 (fr) * 2008-03-04 2009-09-11 Peugeot Citroen Automobiles Sa Systeme de freinage avec controle de stabilite et de trajectoire utilisant un dispositif de stockage d'energie ainsi qu'une pompe externe et procede de stockagre denergie associe.
EP2103493A1 (fr) * 2008-03-20 2009-09-23 Peugeot Citroën Automobiles S.A. Système de contrôle de stabilité et de trajectoire d'un véhicule automobile utilisant un servofrein actif

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10250552A (ja) * 1997-03-13 1998-09-22 Sumitomo Electric Ind Ltd アンチスキッド制御装置
US6341827B1 (en) * 1997-11-27 2002-01-29 Continental Teves Ag & Co., Ohg Brake system with a rear axle anti-locking arrangement
DE102004046940A1 (de) * 2004-02-06 2005-08-25 Continental Teves Ag & Co. Ohg Kraftradbremsanlage
DE102005052167A1 (de) * 2004-11-30 2006-06-01 Continental Teves Ag & Co. Ohg Verfahren zur Blockierschutz-Regelung für eine Bremsanlage eines Kraftfahrzeugs mit einem Antiblockiersystem

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1780654A1 (de) * 1965-05-14 1973-02-08 Graubremse Gmbh Steueranordnung fuer den druck in radbremszylindern
JPH02169359A (ja) * 1988-09-15 1990-06-29 Nippondenso Co Ltd ブレーキ圧力制御装置
DE4334838A1 (de) * 1993-10-13 1995-04-20 Teves Gmbh Alfred Bremsanlage mit elektronischer Blockierschutzregelung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2933085A1 (de) * 1979-08-16 1981-02-26 Bosch Gmbh Robert Antiblockierregelsystem
DE3109372A1 (de) * 1981-03-12 1982-09-30 Volkswagenwerk Ag, 3180 Wolfsburg "pumpenloses hydraulisches bremssystem fuer kraftfahrzeuge"
DE3322786A1 (de) * 1983-06-24 1985-01-10 Volkswagenwerk Ag, 3180 Wolfsburg Hydraulisches und/oder pneumatisches bremssystem fuer kraftfahrzeuge
US4976501A (en) * 1985-02-19 1990-12-11 Kelsey-Hayes Company Fluid accumulator for use in a vehicle anti-lock brake system
DE3735366A1 (de) * 1987-10-19 1989-05-03 Teves Gmbh Alfred Bremsschlupfgeregelte kraftfahrzeugbremsanlage
DE4232614A1 (de) * 1992-09-29 1994-03-31 Teves Gmbh Alfred Blockiergeschützte hydraulische Bremsanlage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1780654A1 (de) * 1965-05-14 1973-02-08 Graubremse Gmbh Steueranordnung fuer den druck in radbremszylindern
JPH02169359A (ja) * 1988-09-15 1990-06-29 Nippondenso Co Ltd ブレーキ圧力制御装置
DE4334838A1 (de) * 1993-10-13 1995-04-20 Teves Gmbh Alfred Bremsanlage mit elektronischer Blockierschutzregelung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 14, no. 428 (M - 1025) 14 September 1990 (1990-09-14) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2928117A1 (fr) * 2008-03-03 2009-09-04 Peugeot Citroen Automobiles Sa Systeme de freinage permettant la mise en oeuvre d'un procede de controle de stabilite et de trajectoire
EP2098425A1 (fr) * 2008-03-03 2009-09-09 Peugeot Citroën Automobiles S.A. Systèmes de freinage permettant la mise en oeuvre d'un procédé de contrôle de stabilité et de trajectoire
FR2928324A1 (fr) * 2008-03-04 2009-09-11 Peugeot Citroen Automobiles Sa Systeme de freinage avec controle de stabilite et de trajectoire.
FR2928326A1 (fr) * 2008-03-04 2009-09-11 Peugeot Citroen Automobiles Sa Systeme de freinage avec controle de stabilite et de trajectoire utilisant un dispositif de stockage d'energie ainsi qu'une pompe externe et procede de stockagre denergie associe.
EP2103493A1 (fr) * 2008-03-20 2009-09-23 Peugeot Citroën Automobiles S.A. Système de contrôle de stabilité et de trajectoire d'un véhicule automobile utilisant un servofrein actif
FR2928889A1 (fr) * 2008-03-20 2009-09-25 Peugeot Citroen Automobiles Sa Systeme de controle de stabilite et de trajectoire d'un vehicule automobile utilisant un servofrein actif

Also Published As

Publication number Publication date
DE19611550A1 (de) 1997-09-25

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