EP1419075A1 - Dispositif electrohydraulique de regulation de pression - Google Patents

Dispositif electrohydraulique de regulation de pression

Info

Publication number
EP1419075A1
EP1419075A1 EP02794767A EP02794767A EP1419075A1 EP 1419075 A1 EP1419075 A1 EP 1419075A1 EP 02794767 A EP02794767 A EP 02794767A EP 02794767 A EP02794767 A EP 02794767A EP 1419075 A1 EP1419075 A1 EP 1419075A1
Authority
EP
European Patent Office
Prior art keywords
pressure
pressure control
control device
valve block
housing
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.)
Withdrawn
Application number
EP02794767A
Other languages
German (de)
English (en)
Inventor
Holger Meyer
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.)
Continental Teves AG and Co OHG
Original Assignee
Continental Teves AG and Co OHG
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
Priority claimed from DE10207247A external-priority patent/DE10207247A1/de
Application filed by Continental Teves AG and Co OHG filed Critical Continental Teves AG and Co OHG
Publication of EP1419075A1 publication Critical patent/EP1419075A1/fr
Withdrawn legal-status Critical Current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
    • B60T8/36—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 including a pilot valve responding to an electromagnetic force
    • B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
    • B60T8/3675—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S303/00—Fluid-pressure and analogous brake systems
    • Y10S303/10—Valve block integrating pump, valves, solenoid, accumulator

Definitions

  • the invention relates to a pressure control device, in particular for motor vehicle brake systems, according to the preamble of patent claim 1.
  • Electronically regulating brake devices are known (Brake Manual, "Electronic Brake System", 1995, ISBN 3-89059-026-8). They consist of a combination of a hydraulic control unit (VB), which is also referred to as a valve block, and an electronic controller (ER).
  • the hydraulic control unit comprises a motor-pump unit and a valve block flanged to it.
  • the motor-pump unit provides the pressurized liquid volume required during the pressure build-up phase during brake control.
  • the intake and exhaust valves combined in the valve block enable the modulation of the wheel brake pressures.
  • the brake lines to the wheel brakes are connected to the valve block.
  • the valves are hydraulically connected to the valve block via holes. The signals from the four wheel speed sensors are fed to the controller.
  • the regulation of the brake pressure can be improved if one or more pressure sensors are provided in the hydraulic lines leading to the wheel brake cylinders.
  • the pressure sensors are mounted directly on the valve block.
  • the valve block also includes the electromagnetically controllable hydraulic valves. within The electrical coils necessary for actuating the hydraulic valves are arranged half of the controller.
  • the finished brake control unit is created in a later assembly step by assembling the valve block and controller.
  • the valve block and the controller are designed as so-called magnetic connectors. When assembling, the coils slide over the hydraulic valves arranged in the valve block.
  • the electrical contacts between the pressure sensors arranged in the valve block and the circuit carrier arranged in the controller are produced by spring contacts.
  • the electrical components necessary for the electronic processing of the measurement signals recorded on the pressure sensor membrane are either combined in a pressure sensor assembly or, in the case of several pressure sensors, combined in one pressure sensor module.
  • the pressure sensor unit or the pressure sensor module is thus arranged on the valve block and is firmly connected to it after the valve block has been installed.
  • the object of the present invention is to design a pressure control device of the type specified in such a way that the aforementioned disadvantages are avoided.
  • the invention preferably provides for the sensory scanning of a hydraulic channel with a pressure transducer, the pressure measuring cell, which can comprise, for example, a pressure measuring membrane and a passive, uncompensated strain gauge bridge mounted thereon, and the electronic circuit for signal conditioning of the signals of the strain gauge bridge. ke structurally separate to arrange in the unit of the electronic controller.
  • the electrohydraulic pressure control device is composed of a valve block and an electronic controller to form a monolithic unit. These two units are preferably designed as magnetic plugs.
  • the otherwise usual integration of an active electronic circuit for signal preamplification, signal processing and error compensation of the measuring bridge in the structural unit of the pressure sensor is thus dispensed with.
  • the electronic components for signal conditioning for one or more pressure transducers are implemented as part of a larger integrated circuit IC in the controller.
  • calculation means in particular implemented by one or more microcomputers or controllers, are present in the controller with which the errors in the measuring chain of each individual pressure channel can be minimized by electronic evaluation of two functionally separate correction variable calculations or correction tables.
  • the above-mentioned calculation means can be used, for example, to carry out methods for minimizing errors in the treatment of the pressure measurement signals. For example, it is possible to determine the setpoint deviations of a pressure transducer as a function of pressure and temperature and / or the setpoint deviations of the signal conditioning stage assigned to the pressure transducer as a function of the signal input voltage and the temperature using reference point measurements and to save the result of this determination.
  • the device according to the invention is preferably used in electro-hydraulic brake systems (EMS).
  • EMS electro-hydraulic brake systems
  • the invention has i.a. the advantage that faulty pressure sensors can be checked and exchanged much more cost-effectively than would be the case if the pressure sensor were mounted on the valve block due to the arrangement in the electronic controller.
  • FIG. 1 is a spatial representation of a structural unit consisting of a controller and a valve block of a pressure control device for motor vehicles. convincing braking systems,
  • FIG. 3 is a top view of a pressure measuring cell installed in the housing of the regulator
  • FIG. 4 shows an exemplary embodiment for a pressure-tight connection of a pressure measuring cell in a valve block.
  • an electrohydraulic pressure control device 2 for controlling hydraulically actuated motor vehicle brakes is shown schematically simplified, which consists of a valve block 1 and a controller 3.
  • the valve block 1 and the controller 3 form a compact structural unit.
  • the valve block 1 and the controller 3 are connected via an electrical and magnetic interface (so-called magnetic connector), not shown.
  • the valve block 1 conducts a pressure-modulated brake fluid to the wheel brakes through the pressure control valves (not shown) contained therein, which can be controlled by the controller 3.
  • the control of the pressure control valves in the valve block 1 takes place via electrical coils arranged in the controller 3, which are placed on the so-called valve domes (valve domes and coils not shown).
  • the valve coils are electrically connected to components on a circuit board 9 in the controller 3.
  • the pressure measuring cells 4 'of a plurality of pressure sensors 4 are arranged in addition to the valve coils. For the sake of simplicity, only one pressure sensor 4 is shown.
  • the pressure sensor 4 is held by a web 7 which is connected to the wall of the housing 6 and which is made of the material of the regulator housing. The web 7 is designed to accommodate the pressure measuring cell 4 'in the region of the pressure measuring cell 4' with thick walls.
  • the housing 6 of the controller 3 is connected to the valve block 1 via at least one non-positive and / or positive connection means 16 (screw, rivet, etc.).
  • the controller 3 is fastened to the valve block 1 by the connecting means 16.
  • FIG. 2 shows a pressure measuring cell 4 'of a pressure sensor 4 which is connected to a tubular feed 13 which is inserted into a pressure line 5 of the valve block 1 when the regulator 3 is mounted on the valve block 1.
  • Sealing to the valve block 1 takes place here by means of an annular seal 14 which is clamped between a bore step adjoining the pressure line 5 and an annular disk-shaped holding means 12 ′ connected to the feed 13.
  • annular seal 14 which is clamped between a bore step adjoining the pressure line 5 and an annular disk-shaped holding means 12 ′ connected to the feed 13.
  • two disk-shaped holding means 12, 12' are provided, which are arranged on the two tubular ends of the tubular feed 13.
  • the pressure measuring cell 4 is directly connected, which contains a measuring membrane and strain gauges arranged thereon.
  • the strain gauges are connected via bond wires 11 or flex foil to the circuit carrier 9, which is fixed as a horizontal circuit board above the web 7 in the frame-shaped housing 6.
  • the circuit carrier 7 carries both the electronic components of the controller 3 required for the pressure sensor 4 and for the control of the pressure regulating valves.
  • the circuit board which is made of plastic, can be provided with a metallic cooling plate 17 for cooling the electrical components.
  • Electronic components 8 for evaluating the signals of the pressure measuring cell 4 ′ and a microcontroller 10 are arranged on the circuit carrier 9.
  • Fig. 3 shows the web 7 in plan view, in which a pressure measuring cell 4 'is injected.
  • the web 7 expediently consists of the material of the controller housing and is preferably produced in one operation with the controller housing.
  • the pressure measuring cell 4 ' can also be fixed in the web 7 in another way, e.g. by screwing, plugging, locking, gluing or by means of a thermoplastic connection.
  • FIG. 4 shows an example of a pressure-tight connection of a pressure measuring cell 4 'to a pressure line 5 in the valve block 1.
  • a plug 15 made of rubber is held in the pressure line 5, which is provided with a step projection, in the end face of the valve block 1 facing the web 7. is more conveniently shaped in the form of a spout or similar, so that the plug 15 is fixed in position and at the same time forms a sealing surface 18 between the valve block 1 and the disk-shaped holding part 12 'on the feed 13.
  • the tubular feed 13 plunges as a press connection sealingly into an axial opening of the plug 15.
  • An additional seal is achieved by clamping the disk-shaped sealing surface 18 on the stopper 15 between the holding means 12 ′ and the valve block 1 as soon as the housing 6 is pressed onto the valve block 1 by means of suitable fastening means 16. It is particularly expedient if the disk-shaped holding means 12 'is arranged in such a way that it is approximately flat with the lower edge 19 of the regulator 3, which faces the valve block 1,
  • a pressure control device 2 which enables a particularly simple integration of one or more pressure sensors 4 in a housing 6 by the electronics (evaluation circuit 8) required for the function of each pressure sensor 4 on a circuit board 9 of the electronic controller 3 - is arranged, which at the same time has the circuits for actuating the pressure control valves and possibly also the circuits for actuating a pump motor attached to the valve block 1.
  • all of the aforementioned circuits can be arranged extremely compactly, for example on a single printed circuit board, so that an incredibly simple function check of all of the aforementioned circuits is possible.
  • the extremely inexpensive circuit board (circuit board 9) needs to be replaced. If the pressure measuring cell 4 'is defective, an inexpensive replacement of the frame-shaped housing 6, in which the pressure measuring cell 4' is injected, can be realized just as easily.

Landscapes

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

Abstract

L'invention concerne un dispositif électrohydraulique de régulation de pression comprenant au moins un détecteur de pression (4) qui comporte une cellule détectrice de pression (4') et un circuit d'évaluation électronique (8) destiné à traiter les signaux de mesure recueillis au niveau d'une membre de mesure de pression. Le circuit d'évaluation (8) destiné au détecteur de pression (4) est placé sur le support de circuit (9) du régulateur électronique (3) qui présente le circuit d'évaluation nécessaire à la commande de la soupape régulatrice de pression.
EP02794767A 2001-08-13 2002-08-09 Dispositif electrohydraulique de regulation de pression Withdrawn EP1419075A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10138627 2001-08-13
DE10138627 2001-08-13
DE10207247 2002-02-21
DE10207247A DE10207247A1 (de) 2001-08-13 2002-02-21 Elektrohydraulische Druckregelvorrichtung
PCT/EP2002/008954 WO2003016116A1 (fr) 2001-08-13 2002-08-09 Dispositif electrohydraulique de regulation de pression

Publications (1)

Publication Number Publication Date
EP1419075A1 true EP1419075A1 (fr) 2004-05-19

Family

ID=26009890

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02794767A Withdrawn EP1419075A1 (fr) 2001-08-13 2002-08-09 Dispositif electrohydraulique de regulation de pression

Country Status (4)

Country Link
US (1) US7011380B2 (fr)
EP (1) EP1419075A1 (fr)
JP (1) JP2004538211A (fr)
WO (1) WO2003016116A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005088691A (ja) * 2003-09-16 2005-04-07 Advics:Kk ブレーキユニット
JP4725098B2 (ja) * 2004-09-14 2011-07-13 株式会社アドヴィックス ブレーキ液圧制御用アクチュエータ
DE102005002904A1 (de) * 2005-01-21 2006-07-27 Abb Patent Gmbh Elektrode in einem Messrohr eines magnetisch-induktiven Durchflussmessers
US7421902B2 (en) * 2006-10-13 2008-09-09 Smartire Systems, Inc. Fluid pressure sensing method and apparatus
US10775261B2 (en) * 2018-02-12 2020-09-15 Steering Solutions Ip Holding Corporation In-vehicle seal integrity verification system
DE102020207505A1 (de) 2020-06-17 2021-12-23 Robert Bosch Gesellschaft mit beschränkter Haftung Hydraulikaggregat, insbesondere zur Steuerung und Regelung eines Bremsdrucks in einem Bremskreis einer elektronisch schlupfregelbaren Bremsanlage eines Kraftfahrzeugs und Verfahren zur Montage eines Hydraulikaggregats

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9215510D0 (en) 1992-07-22 1992-09-02 Grau Ltd Braking systems
DE19514383A1 (de) 1995-04-19 1996-10-24 Teves Gmbh Alfred Hydraulische Kraftfahrzeugbremsanlage mit Bremsschlupfregelung und/oder automatischem Bremseneingriff zur Antriebs- und/oder Fahrdynamikregelung
DE19755821A1 (de) 1997-12-16 1999-06-17 Bosch Gmbh Robert Bremsanlage für Fahrzeuge
DE19841334A1 (de) 1998-03-31 1999-10-07 Itt Mfg Enterprises Inc Drucksensorbaugruppe
EP1068120B1 (fr) * 1998-03-31 2002-07-03 Continental Teves AG & Co. oHG Bloc de composants detecteurs de pression
DE19849287A1 (de) 1998-07-08 2000-01-13 Continental Teves Ag & Co Ohg Bremsdrucksteuergerät
DE19832435B4 (de) 1998-07-18 2007-10-04 Zf Friedrichshafen Ag Anordnung zur Druckmessung in einem hydraulischen Steuergerät
US6312061B1 (en) 1998-11-25 2001-11-06 Kelsey-Hayes Company Structure for mounting a cluster of pressure sensors upon an electro-hydraulic brake system control unit
EP1016573B1 (fr) * 1998-12-28 2006-11-02 Kelsey-Hayes Company Capteur de pression pour un système de commande hydraulique et méthode de montage pour le capteur
US6591684B2 (en) * 1998-12-28 2003-07-15 Kelsey-Hayes Company Pressure sensor intergrated into an electro-hydraulic control unit
EP1282544B1 (fr) 2000-05-11 2006-07-19 Continental Teves AG & Co. oHG Dispositif de freinage a module capteur de pression integre
DE10107239A1 (de) * 2001-02-16 2002-08-29 Wabco Gmbh & Co Ohg Steuereinrichtung für Druckmittel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03016116A1 *

Also Published As

Publication number Publication date
US20040207255A1 (en) 2004-10-21
JP2004538211A (ja) 2004-12-24
US7011380B2 (en) 2006-03-14
WO2003016116A1 (fr) 2003-02-27

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