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WO2012028568A1 - Module d'actionnement pour un système de freinage - Google Patents

Module d'actionnement pour un système de freinage Download PDF

Info

Publication number
WO2012028568A1
WO2012028568A1 PCT/EP2011/064795 EP2011064795W WO2012028568A1 WO 2012028568 A1 WO2012028568 A1 WO 2012028568A1 EP 2011064795 W EP2011064795 W EP 2011064795W WO 2012028568 A1 WO2012028568 A1 WO 2012028568A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
brake
hydraulic
simulator
piston
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/EP2011/064795
Other languages
German (de)
English (en)
Inventor
Stefan A. Drumm
Steffen Linkenbach
Marco Besier
Johann Jungbecker
Lothar Schiel
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
Application filed by Continental Teves AG and Co OHG filed Critical Continental Teves AG and Co OHG
Publication of WO2012028568A1 publication Critical patent/WO2012028568A1/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
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/04—Brake-action initiating means for personal initiation foot actuated
    • B60T7/042—Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force sensors
    • 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
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • B60T11/18—Connection thereof to initiating means
    • 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
    • B60T8/40—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 comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • B60T8/4072—Systems in which a driver input signal is used as a control signal for the additional fluid circuit which is normally used for braking
    • B60T8/4081—Systems with stroke simulating devices for driver input
    • 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
    • B60T2270/00—Further aspects of brake control systems not otherwise provided for
    • B60T2270/82—Brake-by-Wire, EHB

Definitions

  • the present invention relates to an actuation module for a brake system for motor vehicles, which is controllable in a "brake-by-wire" mode both by the driver and independently of the driver, preferably in the "brake-by-wire” mode is operated and can be operated in at least one fallback mode in which only the operation by the driver is possible, with
  • a brake pedal for actuating a master cylinder with two pistons arranged one behind the other, which delimit two pressure chambers
  • Pressure chamber and the second hydraulic chamber with the second pressure chamber is in communication, one
  • Simulator spring which is arranged in a simulator spring space, and with at least one simulator free gabeventil,
  • a hydraulic unit which provides brake system pressure in the "brake-by-wire" mode, a pressure modulation unit for modulating rad ⁇ individual brake pressures, the per wheel brake a Eirr lassventil and an outlet valve for adjusting rad 'individual brake pressures having from the brake system pressure are derived, wherein the inlet valves in the non-activated state forward the brake system pressure unchanged to the wheel brakes,
  • Such an actuation module is known for example from WO 2008/074448 AI.
  • the path simulator provided in the known actuation module has two independently movable pistons which form the movable walls.
  • the simulator spring is disposed between the two pistons, with the force acting on them, apart from inertia and friction effects, being equal to the maximum of the hydraulic forces acting on the pistons.
  • Tatsa ⁇ che is felt that in a concurrent leak of a brake circuit and defective simulator shut-off only very little pressure can be built, because a large proportion of the displaced from the master brake cylinder pressure medium flows useless in the travel simulator.
  • Figure 1 of the drawing 2 shows a hydraulic circuit ⁇ image of a first embodiment
  • Fig. Hyd a ⁇ raulisches diagram of a second embodiment of the brake system according to the invention.
  • the brake system shown in Fig. 1 consists of a Wesentli ⁇ chen operable by an actuating or brake pedal 1 hydraulic piston-cylinder assembly 2, with a hydraulic piston-cylinder assembly 2 cooperating Wegsimulations Huawei 3, one of the hydraulic piston Cylinder arrangement 2 associated pressure fluid reservoir 4, an electrically controllable pressure supply device 5, electrically controllable Druckmodulations- or intake and exhaust valves 6a-6d, 7a-7d, at the output terminals wheel brakes 8, 9, 10, 11 are connected to a motor vehicle, not shown , as well as an electronic control unit 12, which serves to control the electrically controllable components.
  • the inlet ports of the inlet valves 6a-6d are supplied with pressures, referred to as system pressures, by means of system pressure lines 13a, 13b Pressure sensors 34, 35 are provided for detecting these prevailing in the system pressure lines 13a, 13b pressures.
  • Return lines 14a, 14b, the output terminals of the exhaust valves 7a-7d connect with the under atmosphere, a ⁇ rend jerk pressure fluid reservoir. 4
  • the hydraulic piston-cylinder assembly 2 which can be regarded as a Actuate the ⁇ supply unit of the brake system according to the invention in a schematically indicated housing 21, two successively arranged hydraulic pistons 15, 16, the hydraulic chambers or pressure chambers 17, 18 be ⁇ borders, which together with the piston 15, 16 a
  • Two-circuit master cylinder or form a tandem master cylinder Two-circuit master cylinder or form a tandem master cylinder.
  • the pressure chambers 17, 18 are on the one hand in the piston 15, 16 formed radial bores 19, 20 with the pressure fluid reservoir 4 in connection, these, the pressure equalization in the unactuated state serving connections by a relative movement of the pistons 17, 18 in the housing 21 are shut off and on the other hand, with hydrau ⁇ metallic lead portions 47, 48 of the pressure
  • a coupled to both the brake pedal 1 and the first (master cylinder) piston 15 piston rod 24 couples the actuation paths of the brake pedal 1 and (master cylinder) piston 15, so that the pedal travel either from a likewise redundantly running displacement sensor 25 or alternatively or additionally from a pedal travel or pedal angle sensor (not shown) is detected.
  • the pressure- ready device 5 is designed as a hydraulic cylinder-piston arrangement or a single-circuit electrohydraulic actuator whose piston 26 is driven by a schematically indicated electric motor 27 with the interposition of a rotation system (not shown).
  • the piston 26 defines a pressure chamber 28. Unlike the master cylinder 2 described above, the actuator piston 26 has no, the radial bores 19, 20 of the master cylinder piston 15, 16 corresponding equalizing connections. For sealing the gap between the pressure chamber 28 and piston 26, a primary sealing ring carrying the hydraulic pressure and a secondary wetted, non-pressure-loaded secondary sealing ring are provided.
  • a check valve 56 is disposed between the line section 29 and the pressure chamber 28, which allows a flow from the pressure ⁇ medium reservoir 4 to the pressure chamber 28 and thus a sucking in pressure medium.
  • the pressure chamber 28 is electrically actuated to input terminals, normally closed sequence valves 30, 31 is Schlos ⁇ sen, which are connected with their output terminals to the aforementioned system pressure lines 13a, 13b and thus are connected to the input terminals of the intake valves 6a-6d.
  • the Zuschaltventilen 30, 31 each one to the pressure chamber 28 closing check valve 32, 33 connected in parallel, which allows a ge of the actuator 5 ⁇ controlled pressure build-up in the system pressure lines 13 a and 13 b regardless of the switching state of the Zuschaltventile 30, 31.
  • Displacement simulator device 3 in the above-mentioned housing 21 is hydraulically designed and two of movable walls 37, 38 limited hydraulic chambers 39, 41, one of the two chambers 39, 41 from each other
  • Simulator piston 40 and the simulator piston 40 biasing simulator spring 42 has.
  • the first hydraulic chamber 39 communicates with the first pressure chamber 17 and the second hydraulic chamber 41 with the second pressure chamber 18 of the master cylinder, wherein the hyd ⁇ raulischen chambers 39, 41 with the pressure chambers 17, 18 connecting lines with the reference numeral 47 , 48 are provided.
  • the above-mentioned movable walls 38, 38 preferably ge by surfaces of the simulator piston 40 ⁇ forms, which is designed as a stepped piston and a star re mechanical coupling of the movable walls 38, 39 represents.
  • the simulator spring 42 is in one
  • Simulator spring chamber 43 is arranged. Simulator spring chamber 43 is connected with the interposition of an electrically operable Simulatorabigabeventils 46, for example via the above-mentioned return line 14 b, with the Druckstoffvorratsbe container 4.
  • the simulator release valve 46 is connected in parallel with one another, which opens towards the simulator spring chamber 43 check valve 45 that allows independent of the switching state of the simulator cut-off valve 46 and inde ⁇ gig of a throttle action of the hydraulic simulator Abströmeducationen a largely unthrottled Einströ ⁇ men of the pressure fluid in the simulator spring chamber 28th
  • Simulator spring chamber 43 sealing elements 57, 58, 49, 50.
  • the Assignment of said sealing elements is vorzugswei ⁇ se such that the first, the (simulator) chamber 39 sealing sealing member 57 together with a first, the (simulator) chamber 40 sealing sealing member 58 and the simulator piston 40 in the housing 21 a delimiting unspecified first annular space, which is connected via a first hydraulic port 51 to the pressure medium reservoir 4.
  • a second hydrau ⁇ lic port 52 is connected to the pressure medium reservoir 4 - for example via the aforementioned line section 29, which opens into a second, unspecified annular space in the housing 21 by the simulator piston 40 and a second, the second chamber 41 sealing sealing element 49 and another, the simulator spring chamber 43 sealing sealing element 50 is limited ⁇ . It is also advantageous if the (Hauptzy ⁇ linder-) pressure chambers 17, 18 and the (simulator) chambers 39, 41 are designed in volume so that the storage ⁇ volume of the master cylinder pressure chambers 17, 18 and the hydrau ⁇ Lische receiving volume of the two hydraulic chambers 39, 41 have the same ratio.
  • the structure of the second embodiment of the brake system according to the invention shown in Fig. 2 corresponds to the whge ⁇ starting of the braking system shown in FIG. 1.
  • the function of the simulator released meet instead of a ⁇ Zigen simulator release valve 46 (Fig. 1), two simulator ⁇ release valves 53, 54, formed as normally closed (NC) 2/2-way valves and mentioned in the in connection with Fig. 1 hydraulic line sections 47, 48 are inserted.
  • NC normally closed
  • Simulator spring chamber 43 and return line 14b Henen line section 55, a hydraulic throttle or aperture 55 connected, which causes in the "brake-by-wire" - mode hydraulic damping Vortexbewe ⁇ tion of the brake pedal, as well as the already known from Fig. 1 check valve 45, which is a Nachsaugen the Pressure ⁇ means in the simulator spring chamber 43, bypassing the throttle or diaphragm and thus allows a largely undamped backward movement of the brake pedal 1.
  • a first module would be essentially the master cylinder assembly 2, the hydraulic pump
  • Wegsimulator worn 3, the pressure medium reservoir 4, parts of the hydraulic lines, 14a, 14b, and the line sections 29, 47, 48 include.
  • a second module could be formed by the electrohydraulic actuator 5, while a third module would be formed by the electronic control unit 12.
  • all of the electrically operable valves 6a-6d, 7a-7d, 22a, 22b, 30, 31, the check valves 32, 33, the simulator release valve 46 with check valve 45 and all the pressure sensors 23, 34, 35 could be combined into a fourth module, All modules are self-assembled and testable units. Otherwise, the operation of the inventive brake ⁇ plant yields both in the preferred 'brake-by-wire "and in the so-called. Fallback mode of operation for operators on the relevant technical field expert from the disclosure of the present patent application and need not therefore explained to become.

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 freinage pour véhicules automobiles qui peut être commandé selon un mode de fonctionnement "brake-by-wire" (freinage à commande électronique) tant par le conducteur du véhicule qu'indépendamment de celui-ci, qui fonctionne de préférence dans le mode de fonctionnement "brake-by-wire" et peut fonctionner dans au moins un mode de fonctionnement de secours dans lequel seul le fonctionnement par le conducteur de véhicule est possible. Le système de freinage présente entre autres un simulateur de course (3) à actionnement hydraulique, qui présente des chambres (39, 41) (de simulateur) hydrauliques délimitées par deux parois mobiles (37, 38). L'invention a pour objet une sécurité de fonctionnement accrue d'un tel module d'actionnement. A cet effet, les parois mobiles (37, 38) sont rigidement et mécaniquement accouplées, et sont formées de préférence par des surfaces du piston (40) de simulateur qui est réalisé sous forme de piston différentiel.
PCT/EP2011/064795 2010-08-30 2011-08-29 Module d'actionnement pour un système de freinage Ceased WO2012028568A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102010039928 2010-08-30
DE102010039928.0 2010-08-30
DE102011081601A DE102011081601A1 (de) 2010-08-30 2011-08-26 Betätigungsmodul für eine Bremsanlage
DE102011081601.1 2011-08-26

Publications (1)

Publication Number Publication Date
WO2012028568A1 true WO2012028568A1 (fr) 2012-03-08

Family

ID=44514746

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/064795 Ceased WO2012028568A1 (fr) 2010-08-30 2011-08-29 Module d'actionnement pour un système de freinage

Country Status (2)

Country Link
DE (1) DE102011081601A1 (fr)
WO (1) WO2012028568A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108162940A (zh) * 2018-02-06 2018-06-15 吉林大学 智能汽车复合线控制动系统及其制动控制方法
US10112592B2 (en) 2013-09-16 2018-10-30 Ipgate Ag Braking device and method for operating a breaking device
WO2018234387A1 (fr) * 2017-06-20 2018-12-27 Ipgate Ag Système de freinage
US10421447B2 (en) 2013-09-16 2019-09-24 Ipgate Ag Electrically-driven pressure regulator and volume-delivery unit
WO2020099255A1 (fr) * 2018-11-15 2020-05-22 Continental Teves Ag & Co. Ohg Simulateur pour systèmes de freinage hydrauliques et système de freinage
CN114834407A (zh) * 2022-03-28 2022-08-02 东风汽车集团股份有限公司 一种车辆制动踏板模拟装置及踏板感调节方法
US12145548B2 (en) 2019-03-21 2024-11-19 Ipgate Ag Brake system and method for controlling a brake system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012025961B4 (de) * 2012-02-15 2025-10-02 Ipgate Ag Bremssystem zur Diagnose von Ausfällen
DE102012025970B4 (de) * 2012-02-15 2025-10-02 Ipgate Ag Bremsbetätigungsvorrichtung
DE102013111974A1 (de) 2013-10-30 2015-04-30 Ipgate Ag Betätigungsvorrichtung für eine Fahrzeugbremse
JP6413138B2 (ja) 2015-02-06 2018-10-31 日立オートモティブシステムズ株式会社 液圧制御装置及びブレーキシステム
DE102019201774A1 (de) * 2019-02-12 2020-08-13 Continental Teves Ag & Co. Ohg Bremsanlage und zugehöriges Betriebsverfahren

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19833084C1 (de) * 1998-07-23 2000-02-03 Lucas Automotive Gmbh Betätigungsvorrichtung für eine elektrohydraulische Fahrzeugbremsanlage
JP2006219101A (ja) * 2005-02-14 2006-08-24 Toyota Motor Corp 電子制御液圧ブレーキシステム
WO2008074448A1 (fr) 2006-12-20 2008-06-26 Lucas Automotive Gmbh Module de commande électrohydraulique

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3526556A1 (de) * 1985-07-25 1987-01-29 Teves Gmbh Alfred Bremsanlage mit hydraulischer bremskraftverstaerkung
WO2011027386A1 (fr) * 2009-09-01 2011-03-10 トヨタ自動車株式会社 Simulateur de course et dispositif de commande de frein

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19833084C1 (de) * 1998-07-23 2000-02-03 Lucas Automotive Gmbh Betätigungsvorrichtung für eine elektrohydraulische Fahrzeugbremsanlage
JP2006219101A (ja) * 2005-02-14 2006-08-24 Toyota Motor Corp 電子制御液圧ブレーキシステム
WO2008074448A1 (fr) 2006-12-20 2008-06-26 Lucas Automotive Gmbh Module de commande électrohydraulique

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10421447B2 (en) 2013-09-16 2019-09-24 Ipgate Ag Electrically-driven pressure regulator and volume-delivery unit
US10112592B2 (en) 2013-09-16 2018-10-30 Ipgate Ag Braking device and method for operating a breaking device
US11104317B2 (en) 2013-09-16 2021-08-31 Ipgate Ag Brake device and method for operating a brake device
US11981316B2 (en) 2017-06-20 2024-05-14 Ipgate Ag Brake system
US11472388B2 (en) 2017-06-20 2022-10-18 Ipgate Ag Brake system
GB2578399A (en) * 2017-06-20 2020-05-06 Ipgate Ag Brake system
US12377827B2 (en) 2017-06-20 2025-08-05 Ipgate Ag Brake system
WO2018234387A1 (fr) * 2017-06-20 2018-12-27 Ipgate Ag Système de freinage
US12365319B2 (en) 2017-06-20 2025-07-22 Ipgate Ag Brake system
GB2578399B (en) * 2017-06-20 2022-09-14 Ipgate Ag Brake system
WO2018233923A1 (fr) * 2017-06-20 2018-12-27 Ipgate Ag Système de freinage
US12304451B2 (en) 2017-06-20 2025-05-20 Ipgate Ag Brake system
US12291184B2 (en) 2017-06-20 2025-05-06 Ipgate Ag Brake system
US11987227B2 (en) 2017-06-20 2024-05-21 Ipgate Ag Brake system
CN108162940A (zh) * 2018-02-06 2018-06-15 吉林大学 智能汽车复合线控制动系统及其制动控制方法
WO2020099255A1 (fr) * 2018-11-15 2020-05-22 Continental Teves Ag & Co. Ohg Simulateur pour systèmes de freinage hydrauliques et système de freinage
US12145548B2 (en) 2019-03-21 2024-11-19 Ipgate Ag Brake system and method for controlling a brake system
CN114834407B (zh) * 2022-03-28 2024-01-30 东风汽车集团股份有限公司 一种车辆制动踏板模拟装置及踏板感调节方法
CN114834407A (zh) * 2022-03-28 2022-08-02 东风汽车集团股份有限公司 一种车辆制动踏板模拟装置及踏板感调节方法

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