WO2019097043A1 - Ensemble de fourniture de pression, système de freinage et procédé de fonctionnement associé - Google Patents

Ensemble de fourniture de pression, système de freinage et procédé de fonctionnement associé Download PDF

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Publication number
WO2019097043A1
WO2019097043A1 PCT/EP2018/081687 EP2018081687W WO2019097043A1 WO 2019097043 A1 WO2019097043 A1 WO 2019097043A1 EP 2018081687 W EP2018081687 W EP 2018081687W WO 2019097043 A1 WO2019097043 A1 WO 2019097043A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
chamber
cylinder
brake
supply arrangement
Prior art date
Application number
PCT/EP2018/081687
Other languages
German (de)
English (en)
Inventor
Robert Grimm
Jochen Zimmermann
Harald Biller
Original Assignee
Continental Teves Ag & 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 & Co. Ohg filed Critical Continental Teves Ag & Co. Ohg
Publication of WO2019097043A1 publication Critical patent/WO2019097043A1/fr

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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
    • 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
    • B60T11/20—Tandem, side-by-side, or other multiple master cylinder units
    • 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
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66—Electrical control in fluid-pressure brake 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
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • 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
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • B60T13/745—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on a hydraulic system, e.g. a master cylinder
    • 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
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • B60T17/22—Devices for monitoring or checking brake systems; Signal devices
    • B60T17/221—Procedure or apparatus for checking or keeping in a correct functioning condition of brake 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
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • B60T17/22—Devices for monitoring or checking brake systems; Signal devices
    • B60T17/221—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems
    • B60T17/222—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems by filling or bleeding of hydraulic systems
    • B60T17/223—Devices for pressurising brake systems acting on pedal
    • 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
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • 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
    • B60T8/321—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 deceleration
    • B60T8/3255—Systems in which the braking action is dependent on brake pedal data
    • B60T8/326—Hydraulic 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
    • B60T8/343—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
    • B60T8/40—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
    • B60T8/4018—Pump units characterised by their drive mechanisms

Definitions

  • the invention relates to a pressure supply arrangement for a brake system of a motor vehicle, comprising a
  • Master cylinder with a primary chamber and a seconds därhunt further comprising one with the aid of an actuator, which comprises a motor and a ver by means of a Rotati ons translation gear in a pressure buildup chamber slidable plunger.
  • the invention is therefore based on the object to provide a pressure provision arrangement that is suitable systems for use in fault tolerant braking in a small space size. Furthermore, a corresponding Braking system and an associated operating method can be specified.
  • the invention is based on the consideration that Druckguel- lenkomponenten for fault-tolerant brake systems a mechanical African foot pedal operation (“fail-silent") or two electrical rule adjusting drives to realize a
  • the pressure piston comprises a first cylinder and a second cylinder.
  • the second cylinder preferably surrounds the first cylinder at least partially in the radial direction.
  • at least one stop for the first and / or second cylinder is provided, which advantageously stops it in its movement in at least one axial direction of movement, while the other cylinder can move in this direction of movement at least for a predetermined path.
  • the two cylinders are coupled together via a pawl.
  • the actuator is coupled in a preferred embodiment with the first cylinder. In a second preferred embodiment, the actuator is coupled to the second cylinder.
  • the rotation-translation gear preferably comprises one or is formed as a ball screw, wherein the piston is mounted rotationally secured on a spindle of the ball screw, and wherein a nut mounted on the spindle is connected via a belt to the motor shaft, and wherein spindle and motor shaft axially parallel are arranged.
  • the maximum volume of the secondary chamber is preferably greater than the maximum volume of the primary chamber.
  • a second actuator is provided which is adapted to move the primary piston in the primary chamber. If one actuator fails, wheel brake pressure can continue to build up from the other actuator. This pressure supply arrangement is therefore suitable for the "fail-operational" scenario.
  • a brake system comprising hydraulically actuable wheel brakes, comprising a brake pedal, comprising a pressure medium reservoir, further comprising a pressure supply arrangement described above.
  • the secondary chamber is hydraulically connected by a first separating valve separable with two wheel brakes of a first brake circuit and hydraulically connected to two wheel brakes of a second brake circuit.
  • the primary chamber with the wheel brakes of the first brake circuit is separably connected hydraulically by means of a second isolation valve.
  • the above-mentioned object is achieved according to the invention by opening the first separating valve in a normal operating mode and the second separating valve is closed.
  • the secondary chamber is separably connected by means of a Nachsaugventils with the pressure fluid reservoir, wherein each wheel brake is assigned in each case an inlet valve, and wherein in a Nachsaugvorgang the Nachsaugventil is opened and the intake valves are closed.
  • the second pressure source for fail-operational operation is integrated into the existing basic architecture, allowing the system to generate a variable path / pressure-dependent area switching.
  • FIG. 1 shows a print supply arrangement in a first preferred embodiment
  • FIG. FIG. 2 shows a pressure supply arrangement in a second preferred embodiment
  • FIG. F IG. 3 shows a brake system with a pressure supply arrangement according to FIG. 2;
  • F IG. 4 shows a pressure supply arrangement in a third preferred embodiment.
  • An in FIG. 1 illustrated Druck washer position arrangement 2 is formed substantially in the manner of a tandem master cylinder 6, which comprises an actuatable by means of an actuatable brake pedal 10 via a coupling rod 14 primary piston 20 which is moved upon actuation of the brake pedal 10 in a Pri märhunt 24.
  • the primary piston 20 is acted upon by an arranged in the primary chamber 24 elastic element 28, whereby the primary piston 20 is moved in the unactuated state of the brake pedal 10 in its unactuated position.
  • the piston travel of the primary piston 20 is measured by means of a, preferably redundant, displacement sensor 32 ge.
  • a secondary piston 36 is in a secondary chamber 40 and is acted upon by an in the secondary chamber 40 arranged elastic element 42.
  • the elastic elements 28, 42 are preferably each formed as a spring.
  • the secondary piston 36 includes an outer cylinder 52 and a radially disposed therein inner cylinder 50.
  • a motor shaft or drive shaft 62 of an electric motor 58 is coupled via a belt 66 with a nut 70 of a ball screw GE.
  • Motor, belt 66 and ball screw form a first drive or actuator A.
  • the secondary piston 36 thus acts as a pressure piston in an active pressure build-up with the aid of the actuator A.
  • the inner cylinder 50 is rotatably supported on the spindle 74 of the ball screw.
  • the inner cylinder 50 is also prevented by means of a rotation lock on its rotation ver, so that it rotates the spindle 74 in two opposite directions performs axial movements or Transla tions.
  • the angle of rotation of the motor shaft 62 is detected by means of a preferably redundant rotational angle sensor 78, from which then a corresponding piston travel of the piston or cylinder 50, 52 is calculated.
  • the primary chamber 24 is connected via a Schnüffelloch 84 with a hydraulic line 88, which is connectable to a pressure medium reservoir or reservoir of a brake system.
  • the secondary chamber 40 uses a central valve connection of the inner or inner cylinder 50 to the reservoir or the reservoir for pressure equalization.
  • a conventional dual-circuit brake system with the pressure supply arrangement in the fallback level is maintained.
  • the primary chamber 24 preferably feeds a primary circuit I and the secondary chamber 40 preferably feeds the secondary circuit II.
  • the driver's request is via the Pedalstangenweg 32 and a pressure sensor 242, see FIG. 3. recorded.
  • Pressure sensors (not shown) determine the pressure in the primary 24 and secondary chamber 40.
  • the illustrated pressure-providing arrangement 2 is suitable for operation in a "fail-silent" mode in a braking system This fall-back mode comes into effect when the electrical supply / control of the ready-to-print position arrangement 2 fails Actuation of the brake pedal 10 build up pressure in the primary and secondary circuit, this is achieved in particular by the fact that the pressure supply arrangement 2 in fail-silent mode can function as a master brake cylinder which allows the driver to build up brake pressure by means of muscular force.
  • the secondary chamber 40 fulfills a dual function: on the one hand, it is a pressure chamber of a device for active pressure build-up with the aid of the motor and at the same time a secondary chamber of an actuatable by means of the brake pedal 10 tandem master cylinder. 6
  • a simultaneous movement of inner cylinder 50 and outer cylinder 52 is preferably carried out when as much volume of brake fluid is to be moved.
  • a displacement of only the inner cylinder 52 is preferably performed by when a high pressure is to be generated.
  • the two cylinders 50, 52 are coupled together during normal braking.
  • a further longitudinal movement of the outer piston is limited by a wegab dependent attack and a latching device. The inner piston is moved further and generates a higher pressure level due to this surface switching.
  • FIG. 2 a pressure supply arrangement 2 is shown in a further preferred embodiment.
  • the pressure supply arrangement 2 shown in FIG. 2 illustrated Druckergnasan Aunt 2 without being actuated by a driver brake pedal. It is therefore particularly suitable for highly automated driving without mechanical-hydraulic fallback, in which the driver brakes by muscle power, suitable.
  • the pressure supply arrangement 2 has for this purpose a further electric motor 100.
  • a motor shaft or drive shaft 104 of the further electric motor 100 is coupled via a belt 108 with a nut 110 of a further ball screw drive.
  • the piston 20 is rotatably supported on the spindle 106 of the ball screw.
  • the piston 20 is also prevented by means of a rotation assurance on its rotation, so that it performs axial movements or translations in rotations of the spindle 106 in two opposite directions.
  • the rotation angle of the motor shaft 104 is detected by means of a preferably redundantly formed rotation angle sensor 112.
  • This variant of the pressure supply arrangement is in particular special suitable for a fail-operational mode. At a Failure of one of the two electric motors 58, 100 can still move the other electric motor, the corresponding piston 20, 36 in the respective pressure chamber 24, 40 to build up wheel brake pressure. Both engines are supplied from a separate and re dundanten board network and are galvanically separated from each other.
  • a braking system 140 of the type shown in FIG. 2 illustrated Druckbe provision arrangement is shown in FIG. 3 shown. It has four hydraulically actuated wheel brakes 150, 152, 154, 156, to each of which a normally open inlet valve 160-166 and a normally closed exhaust valve 170-176 is hydraulically arranged. Between the respective outlet valve 170-176 and the respective wheel brake 150-156, a filter is preferably arranged in each case. In the inlet valves 160-166, a filter is preferably arranged upstream of the inlet and outlet ports. Preferably, a check valve is hydraulically connected in parallel to the respective inlet valve 160-166. The return check valves are not shown in the drawing.
  • the primary chamber 24 is connected by a hydraulic compensation line 180 with a pressure medium reservoir 184. Via a hydraulic brake pressure supply line 188, the primary chamber 24 is connected to the input terminals of the input valves 160, 162.
  • the primary chamber 24 and the input valves 160, 162 associated wheel brakes 150, 152 are part of a first brake circuit I and a primary circuit.
  • the connection between the primary chamber and the wheel brakes 150, 152 is, if necessary, separable by means of a separating valve 190.
  • the secondary chamber 40 is connected via a hydraulic brake pressure supply line 204 to the input terminals of the A input valves 164, 166, so that they can supply the wheel brakes 154, 156 of a second brake circuit II or secondary circuit with wheel brake.
  • no separating valve is arranged in this particular connection.
  • the secondary chamber 40 is connected by a hydraulic Bremsver sorgungs effet 194 with the wheel brakes 150, 152 of the first brake circuit I, said compound is releasable or separable by a line 194 arranged, preferably normally closed Druckzuschaltventil 200.
  • a hydraulic compensating line 220 connects the hydraulic line 194 with the pressure fluid reservoir 184, this connection being separable by a preferably normally closed separating valve 218.
  • valve 190 is energized closed and the valve 200 is energized open.Thus, in systems without regenerative braking, the number of energized valves remains reduced to two.
  • the wheel brakes 150-156 are from the driven stepped piston Depending on the travel path, the stepped piston 36 permits a surface switchover - from a volume control (cylinder surface of the inner piston or cylinder 50 and the outer piston or cylinder 52) to a pressure control (cylinder end surface of the inner piston or piston). Cylinder 50). The system pressure is measured with a pressure sensor 240.
  • the entire braking energy comes from the driver Due to the dual-circuit nature, the primary circuit I supplies two wheel brakes 150, 152, whereas the remaining wheel brakes 154, 156 To supply all the wheel brakes 150-156 with an approximately equal pressure level, the cylinder end face of the inner piston or cylinder 50 is used in the hydraulic fallback level, so that when idle, the piston or cylinder 52 in its rest position The driver braking force is transmitted to the cylinder 1 via the bound DK piston.
  • the pedal feel (embodiment FIG. 1)
  • no hydraulic or electrical simulator passive Component
  • the pedal feel is advantageously created with the pressure in the primary chamber 24.
  • a pressure sensor 242 in the primary circuit I allows the exact monitoring / compliance with the required force-displacement curve.
  • the pedal travel is determined via the sensor 32.
  • pressure in the secondary chamber 40 is generated according to the Nor malbremsfunktionstoff.
  • drive B can be replaced by a radial piston pump and pressure supply via the Primärnikschnüffelloch a coupling to the secondary circuit II is achieved.
  • FIG. 4 shows another preferred embodiment of a pressure supply arrangement 2. This differs from that shown in FIG. 2 variant shown that by the drive A of the outer cylinder 52 and not the inner cylinder 50 is driven by secondary piston 36.
  • the cylinder 52 can be held at rest with variable displacement and / or pressure according to a method of drive or actuator A, and the cylinder 50 is triggered by operation of drive B in a force / pressure-dependent manner and moved on.
  • a targeted secondary piston movement gives the driver a haptic pedal feedback.
  • the four intake valves 160-166 are closed and the valve 218 is opened, the secondary piston 36 is driven toward zero position from the primary circuit I fluid volume via the valve 190 into the secondary chamber 40 promoted.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

L'invention concerne un ensemble de fourniture de pression (2) pour un système de freinage d'un véhicule automobile. L'ensemble de fourniture de pression comprend un maître-cylindre de frein (6) pourvu d'une chambre primaire (24) et d'une chambre secondaire (40) ; il comprend par ailleurs un piston de pression (36) pouvant être coulissé dans une chambre d'établissement de pression à l'aide d'un actionneur (A), qui comprend un moteur (58), et au moyen d'un mécanisme de rotation-translation. La chambre d'établissement de pression est identique à la chambre de pression secondaire (40). L'invention concerne également un système de freinage, et un procédé de fonctionnement associé.
PCT/EP2018/081687 2017-11-20 2018-11-19 Ensemble de fourniture de pression, système de freinage et procédé de fonctionnement associé WO2019097043A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017220686.1 2017-11-20
DE102017220686.1A DE102017220686A1 (de) 2017-11-20 2017-11-20 Druckbereitstellungsanordnung, Bremssystem und zugehöriges Betriebsverfahren

Publications (1)

Publication Number Publication Date
WO2019097043A1 true WO2019097043A1 (fr) 2019-05-23

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WO (1) WO2019097043A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021211321A1 (de) 2021-10-07 2023-04-13 Continental Automotive Technologies GmbH Bremsanlage für ein Kraftfahrzeug

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2189345A2 (fr) * 2008-10-30 2010-05-26 ROBERT BOSCH GmbH Amplificateur de freinage électrohydraulique
EP2580096A1 (fr) * 2010-06-10 2013-04-17 Continental Teves AG & Co. oHG Procédé et circuit de régulation pour réguler une installation de freinage d'un véhicule à moteur
EP2666687A1 (fr) * 2012-05-23 2013-11-27 Robert Bosch Gmbh Système de freins a servofrein électrique et procédé de gestion d'un tel système de freins
GB2508437A (en) * 2012-12-03 2014-06-04 Honda Motor Co Ltd Braking force generating device having a driving unit to eliminate a gap between a rod and piston when an electric unit becomes defective
KR20160019676A (ko) * 2014-08-12 2016-02-22 현대자동차주식회사 차량의 전기유압식 브레이크 시스템
FR3033753A1 (fr) * 2015-03-18 2016-09-23 Peugeot Citroen Automobiles Sa Dispositif de commande de freinage a assistance electrique comportant un reducteur cycloidal
DE102016206453A1 (de) * 2016-04-18 2017-10-19 Continental Teves Ag & Co. Ohg Bremsanlage für Kraftfahrzeuge

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2189345A2 (fr) * 2008-10-30 2010-05-26 ROBERT BOSCH GmbH Amplificateur de freinage électrohydraulique
EP2580096A1 (fr) * 2010-06-10 2013-04-17 Continental Teves AG & Co. oHG Procédé et circuit de régulation pour réguler une installation de freinage d'un véhicule à moteur
EP2666687A1 (fr) * 2012-05-23 2013-11-27 Robert Bosch Gmbh Système de freins a servofrein électrique et procédé de gestion d'un tel système de freins
GB2508437A (en) * 2012-12-03 2014-06-04 Honda Motor Co Ltd Braking force generating device having a driving unit to eliminate a gap between a rod and piston when an electric unit becomes defective
KR20160019676A (ko) * 2014-08-12 2016-02-22 현대자동차주식회사 차량의 전기유압식 브레이크 시스템
FR3033753A1 (fr) * 2015-03-18 2016-09-23 Peugeot Citroen Automobiles Sa Dispositif de commande de freinage a assistance electrique comportant un reducteur cycloidal
DE102016206453A1 (de) * 2016-04-18 2017-10-19 Continental Teves Ag & Co. Ohg Bremsanlage für Kraftfahrzeuge

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