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WO1995020511A1 - Systeme de freinage avec regulation antipatinage au freinage et a l'acceleration - Google Patents

Systeme de freinage avec regulation antipatinage au freinage et a l'acceleration Download PDF

Info

Publication number
WO1995020511A1
WO1995020511A1 PCT/EP1995/000265 EP9500265W WO9520511A1 WO 1995020511 A1 WO1995020511 A1 WO 1995020511A1 EP 9500265 W EP9500265 W EP 9500265W WO 9520511 A1 WO9520511 A1 WO 9520511A1
Authority
WO
WIPO (PCT)
Prior art keywords
brake
line
pump
suction
valve
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.)
Ceased
Application number
PCT/EP1995/000265
Other languages
German (de)
English (en)
Inventor
Erhard Beck
Hans-Jörg INGENDAHL
Gottfried Dehio
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ITT Automotive Europe GmbH
Continental Teves AG and Co OHG
Original Assignee
ITT Automotive Europe GmbH
Alfred Teves GmbH
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 Automotive Europe GmbH, Alfred Teves GmbH filed Critical ITT Automotive Europe GmbH
Publication of WO1995020511A1 publication Critical patent/WO1995020511A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • B60T8/48—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 connecting the brake actuator to an alternative or additional source of fluid pressure, e.g. traction control systems
    • B60T8/4809—Traction control, stability control, using both the wheel brakes and other automatic braking systems
    • B60T8/4827—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems
    • B60T8/4863—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems closed systems
    • B60T8/4872—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems closed systems pump-back systems

Definitions

  • the present invention relates to a brake system according to the preamble of claim 1.
  • Such a brake system is known from DE-41 28 386 AI.
  • the suction accumulator is arranged in the brake line between the master cylinder and the isolation valve. It is an essentially cylindrical accumulator with two axially opposite pressure medium connections, one of which leads to the master cylinder and the other to the isolating valve.
  • the storage volume is surrounded by a substantially hollow cylindrical membrane, the outside of which is supported on the storage housing and is exposed to atmospheric pressure.
  • This suction reservoir is intended to provide a sufficient pressure medium volume for traction control even at low temperatures and a correspondingly high viscosity of the pump pressure medium.
  • Dip object of the present invention is therefore c " .i, to further improve the suction performance of the pump with traction control in a brake system of the type described in the introduction. This object is achieved by the features in the characterizing part of claim 1.
  • a plate membrane has the advantage over a hollow cylindrical membrane that it is much easier to assemble in the storage housing. Compared to a piston, it has the advantage that no additional sealing is required.
  • the suction accumulator can be precisely matched to the conditions of the brake system.
  • an adapted compression spring can overcome the throttling losses between the master cylinder and the suction accumulator due to its pretensioning, but the spring hardness is selected so that the compression spring yields when the pump is drawn in.
  • a throttle point on the side of the plate membrane facing the atmosphere prevents jerky emptying of the suction reservoir and fluttering of the plate membrane, which could lead to damage to the plate membrane surface.
  • Fig. 2 shows a suction accumulator for a brake system according to the invention.
  • a brake line 3 extends from the master cylinder 1 and leads via a separating valve 8 and an inlet valve 6 to a wheel brake 4.
  • the return line 5 leads via the outlet valve 7 and the low-pressure accumulator 9 to the suction side of the pump 11, a suction accumulator 10 being arranged directly in front of the suction side 11 and being biased by spring force in the accumulator filling direction.
  • the pressure side of the pump 11 connects to the brake line between the isolating valve 8 and the inlet valve 6 via a pressure line 12.
  • the suction side of the pump 11 is also connected via the suction line 13 and the switching valve 14 to the brake line 3 between the master cylinder 1 and the isolation valve 8. While the isolation valve 8 and the inlet valve 6 are normally open solenoid valves, the outlet valve 7 is a normally closed solenoid valve.
  • the changeover valve 14 is actuated hydraulically in that the master cylinder pressure closes the valve when the brake is operated by the pedal. If, in the case of a traction control system, the pump 11 is switched on, the volume of the suction accumulator 10 is available for delivery directly on its suction side.
  • the suction accumulator 10 automatically sucks in pressure medium through the changeover valve 14 and the master cylinder 1 from the pressure medium container 2 due to its preload. During the subsequent suction stroke of the pump 11, a sufficient amount of pressure medium is again available.
  • the other functioning of the brake system shown corresponds to the prior art.
  • the changeover valve 14 is therefore closed during a pedal-operated braking, while the isolating valve 8 is closed only for traction control, in which the changeover valve 14 is open, since no master cylinder pressure is built up.
  • FIG. 2 shows a preferred embodiment of a suction accumulator which can be used in a brake system according to FIG. 1. While Fig. 1 indicates the suction accumulator 10 only chemically, it can be seen in Fig. 2 that the storage chamber 15, which is connected to the return line 5 as shown in Fig. 1, is axially delimited by a plate membrane 16.
  • the housing of the suction accumulator 10 essentially consists of four parts, namely the housing body 17, the housing insert 18, the housing attachment 19 and the housing cover 20.
  • the essentially rotationally symmetrical housing body 17 has a cylindrical recess 21 and 22 from both axial sides . These two recesses 21 and 22 are connected to each other by a central, axially extending channel 23.
  • the recess 22 has radial atmosphere connections 24. It receives the housing cover 20, which is caulked to the housing body 17 at the edge for attachment to the housing.
  • the housing cover 20 is shaped like a pot, with the bottom of the pot facing outwards.
  • the housing cover 20 also has radial openings 25 which are axially offset from the atmosphere connections 24, so that it is not possible to insert a pointed object into the interior of the housing cover 20.
  • the housing cover 20 holds a flexible protective cap 26 on the housing body 17 so that no moisture can penetrate into the other recess 21.
  • the housing insert 18 is inserted, which essentially has the shape of a cylindrical sleeve, and serves to guide the piston 27. Both the housing insert 18 and the piston 27 are supported on the bottom surface of the recess 21 on the housing body 17. Housing insert 18 and piston 27 together in their rest position shown form a bowl-shaped support surface for the plate membrane 16, which is fixed in place on the housing by the housing attachment 19 which is sheared with the housing body 17.
  • the housing attachment 19 with the plate membrane 16 has an annular, radial contact surface, the inner radius of which is smaller than the outer radius of the housing insert 18, so that the housing insert 18 is also held fixed to the housing.
  • the piston 27, however, is axially displaceable. It has a plurality of radial annular grooves 28 on its circumference and is narrower with it Fit in the housing insert 18 that only a strongly throttled air flow can move towards or away from the plate membrane 16 along its circumference in the axial direction.
  • the plate membrane 16 is acted upon by the force of a compression spring 29, which is supported on the housing attachment 19, in the direction of the piston 27, so that the storage chamber 15 takes up its greatest volume even under atmospheric pressure. While the storage chamber 15 is filled with pressure medium, that is to say with brake fluid, the area located beyond the membrane is free of pressure medium. The throttling of the air flowing aixally along the circumference of the piston 27 prevents excessive stress on the plate membrane due to deformations that are too backward.

Landscapes

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

Abstract

La présente invention concerne un système de freinage hydraulique permettant une régulation antipatinage au freinage selon le principe du retour automatique, tandis qu'une pompe à amorçage automatique (11) aspire un fluide sous pression pour empêcher le patinage à l'accélération et délivre ledit fluide au frein (4) agissant sur une roue entraînée. Pour que le système de régulation antipatinage à l'accélération, côté aspiration de la pompe, dispose d'un volume suffisant sans que le franchissement des soupapes centrales du maître-cylindre et de la soupape d'inversion (14) ne produise de fortes résistances hydrauliques dans la conduite d'aspiration (13), il est proposé de placer sur le côté aspiration de la pompe (11) un accumulateur d'aspiration (10) qui réaspire automatiquement, par l'intermédiaire d'une conduite d'aspiration (13), de la soupape d'inversion (14) et des soupapes centrales du maître-cylindre (1), le fluide sous pression lorsque la pompe effectue sa course de refoulement, c'est-à-dire lorsqu'elle envoie du fluide dans la conduite de frein.
PCT/EP1995/000265 1994-01-29 1995-01-25 Systeme de freinage avec regulation antipatinage au freinage et a l'acceleration Ceased WO1995020511A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19944402734 DE4402734C2 (de) 1994-01-29 1994-01-29 Bremsschlupf- und antriebsschlupfgeregelte Bremsanlage
DEP4402734.6 1994-01-29

Publications (1)

Publication Number Publication Date
WO1995020511A1 true WO1995020511A1 (fr) 1995-08-03

Family

ID=6509030

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1995/000265 Ceased WO1995020511A1 (fr) 1994-01-29 1995-01-25 Systeme de freinage avec regulation antipatinage au freinage et a l'acceleration

Country Status (2)

Country Link
DE (1) DE4402734C2 (fr)
WO (1) WO1995020511A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009030707A1 (fr) * 2007-09-05 2009-03-12 Continental Teves Ag & Co. Ohg Système de freinage pour véhicule à moteur

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19544443A1 (de) * 1995-11-29 1997-06-05 Teves Gmbh Alfred Hydraulische Zweikreisbremsanlage mit einer Vorladeeinrichtung
DE19601268A1 (de) * 1996-01-16 1997-07-17 Teves Gmbh Alfred Hydraulische Bremsanlage mit Antriebsschlupfregelung
DE19626305A1 (de) * 1996-07-01 1998-01-08 Teves Gmbh Alfred Hydraulische Bremsanlage mit einer Einrichtung zur Aktivbremsung
DE19841152A1 (de) * 1998-04-07 1999-10-14 Continental Teves Ag & Co Ohg Blockiergeschützte Kraftfahrzeug-Bremsanlage
DE19850910A1 (de) * 1998-11-05 2000-05-11 Bosch Gmbh Robert Druckmittelspeicher für Fahrzeug-Bremsanlagen
DE19953001A1 (de) * 1999-11-04 2001-05-10 Continental Teves Ag & Co Ohg Hydraulische Kraftfahrzeugbremsanlage mit Radschlupfregelung
DE102014221544A1 (de) 2014-10-23 2016-04-28 Continental Teves Ag & Co. Ohg Hydraulisches Aggregat für eine schlupfgeregelte Bremsanlage
DE102021202290A1 (de) 2021-03-09 2022-09-15 Continental Teves Ag & Co. Ohg Pulsationsdämpfer

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0281754A (ja) * 1988-09-16 1990-03-22 Akebono Brake Res & Dev Center Ltd 車両のアンチロツク制御兼トラクシヨン制御装置
DE4128386A1 (de) * 1991-08-27 1993-03-04 Bosch Gmbh Robert Hydraulische bremsanlage mit einer antriebsschlupfregeleinrichtung, insbesondere fuer kraftfahrzeuge
EP0539898A1 (fr) * 1991-10-30 1993-05-05 Sumitomo Electric Industries, Limited Dispositif de contrôle de pression de fluide de freinage
WO1993009010A1 (fr) * 1991-11-02 1993-05-13 Alfred Teves Gmbh Systeme de freinage hydraulique antipatinage
DE4138027A1 (de) * 1991-11-19 1993-05-27 Teves Gmbh Alfred Bremsdruckregelvorrichtung fuer eine hydraulische kraftfahrzeugbremsanlage
JPH05178180A (ja) * 1991-12-26 1993-07-20 Aisin Seiki Co Ltd 制動力および駆動力制御装置
WO1993019960A1 (fr) * 1992-04-03 1993-10-14 Itt Automotive Europe Gmbh Soupape d'inversion hydraulique pour le systeme de freinage d'un vehicule automobile
DE4213205A1 (de) * 1992-04-22 1993-10-28 Teves Gmbh Alfred Bremsdruckregelvorrichtung für eine hydraulische Kraftfahrzeugbremsanlage
DE4336464A1 (de) * 1993-10-26 1995-04-27 Bosch Gmbh Robert Hydraulische Bremsanlage

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3709265A1 (de) * 1987-03-20 1988-09-29 Teves Gmbh Alfred Bremsschlupfgeregelte hydraulische bremsanlage
DE3940177C2 (de) * 1989-12-05 1999-03-18 Teves Gmbh Alfred Schlupfgeregelte hydraulische Fahrzeugbremsanlage
DE4014052A1 (de) * 1990-05-02 1991-11-07 Teves Gmbh Alfred Bremsdruckregelvorrichtung
DE4102864A1 (de) * 1990-05-18 1991-11-21 Bosch Gmbh Robert Hydraulische zweikreisbremsanlage
DE4039661A1 (de) * 1990-12-12 1992-06-17 Bosch Gmbh Robert Hydraulische bremsanlage mit einer blockierschutz- und antriebsschlupfregeleinrichtung, insbesondere fuer kraftfahrzeuge
DE4201732A1 (de) * 1992-01-23 1993-07-29 Teves Gmbh Alfred Bremsdrucksteuervorrichtung insbesondere zum steuern des antriebsschlupfes von angetriebenen raedern
DE4218402B4 (de) * 1992-06-04 2005-08-18 Fte Automotive Gmbh & Co. Kg Antiblockierregelsystem
DE4219450A1 (de) * 1992-06-13 1993-12-16 Teves Gmbh Alfred Hydraulische Bremsanlage mit Schlupfregelung

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0281754A (ja) * 1988-09-16 1990-03-22 Akebono Brake Res & Dev Center Ltd 車両のアンチロツク制御兼トラクシヨン制御装置
DE4128386A1 (de) * 1991-08-27 1993-03-04 Bosch Gmbh Robert Hydraulische bremsanlage mit einer antriebsschlupfregeleinrichtung, insbesondere fuer kraftfahrzeuge
EP0539898A1 (fr) * 1991-10-30 1993-05-05 Sumitomo Electric Industries, Limited Dispositif de contrôle de pression de fluide de freinage
WO1993009010A1 (fr) * 1991-11-02 1993-05-13 Alfred Teves Gmbh Systeme de freinage hydraulique antipatinage
DE4138027A1 (de) * 1991-11-19 1993-05-27 Teves Gmbh Alfred Bremsdruckregelvorrichtung fuer eine hydraulische kraftfahrzeugbremsanlage
JPH05178180A (ja) * 1991-12-26 1993-07-20 Aisin Seiki Co Ltd 制動力および駆動力制御装置
WO1993019960A1 (fr) * 1992-04-03 1993-10-14 Itt Automotive Europe Gmbh Soupape d'inversion hydraulique pour le systeme de freinage d'un vehicule automobile
DE4213205A1 (de) * 1992-04-22 1993-10-28 Teves Gmbh Alfred Bremsdruckregelvorrichtung für eine hydraulische Kraftfahrzeugbremsanlage
DE4336464A1 (de) * 1993-10-26 1995-04-27 Bosch Gmbh Robert Hydraulische Bremsanlage

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 14, no. 276 (M - 984)<4219> 14 June 1990 (1990-06-14) *
PATENT ABSTRACTS OF JAPAN vol. 17, no. 598 (M - 1504) 2 November 1993 (1993-11-02) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009030707A1 (fr) * 2007-09-05 2009-03-12 Continental Teves Ag & Co. Ohg Système de freinage pour véhicule à moteur
US8840196B2 (en) 2007-09-05 2014-09-23 Continental Teves Ag & Co. Ohg Brake system for a motor vehicle

Also Published As

Publication number Publication date
DE4402734A1 (de) 1995-08-03
DE4402734C2 (de) 2003-06-05

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