WO2016096531A1 - Dispositif de commande de frein et système de freinage pour véhicules - Google Patents

Dispositif de commande de frein et système de freinage pour véhicules Download PDF

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Publication number
WO2016096531A1
WO2016096531A1 PCT/EP2015/078944 EP2015078944W WO2016096531A1 WO 2016096531 A1 WO2016096531 A1 WO 2016096531A1 EP 2015078944 W EP2015078944 W EP 2015078944W WO 2016096531 A1 WO2016096531 A1 WO 2016096531A1
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WO
WIPO (PCT)
Prior art keywords
pressure
brake
control device
brake control
wheel
Prior art date
Application number
PCT/EP2015/078944
Other languages
German (de)
English (en)
Inventor
Marco Besier
Stefan Drumm
Paul Linhoff
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 WO2016096531A1 publication Critical patent/WO2016096531A1/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
    • 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
    • B60T2270/00—Further aspects of brake control systems not otherwise provided for
    • B60T2270/40—Failsafe aspects of brake control systems
    • B60T2270/413—Plausibility monitoring, cross check, redundancy
    • 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
    • B60T8/267—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 for hybrid systems with different kind of brakes on different axles
    • 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

Definitions

  • the invention relates to a brake control device according to the preamble of claim 1 and a brake system according to the preamble of claim 11.
  • Braking systems which detect the brake actuation electronically even with a normal brake operation by the driver and the corresponding braking electronically controlled without the driver receives a direct mechanical or hydraulic access to the wheel brakes.
  • electrically operable systems the availability of the brake system and especially the wheel-specific brake pressure control functions for safety is of great importance.
  • This braking systems must in principle be electronically controllable systems or "brake-by-wire" systems. This means that a braking request via elekt ⁇ tronic or electrical control signals required and can be implemented by the system without driver intervention. Especially in such systems must be made For safety reasons, sufficiently high availability of the brake system and also of the externally controllable braking function with wheel-specific control must be ensured.
  • a brake system for motor vehicles which includes four hydraulically actuated wheel brakes, under atmospheric pressure fluid reservoir and a first electro-hydraulic brake control device comprising a master cylinder, an electrically controllable pressure source, a pressure control valve assembly for adjusting wheel individual brake pressures and for each Wheel includes a wheel-individual output pressure port.
  • the brake system comprises a second electrohydraulic module with four electrically driven pumps and electrically actuated valves, which is arranged hydraulically in front of the pressure control valve arrangement of the first brake control device.
  • the brake pressures can be adjusted by means of the second module only brake circuit.
  • a wheel-specific brake pressure adjustment, as required eg for anti-skid control, is not possible with the second module.
  • the availability of rad ⁇ individual control functions in the brake system is therefore limited. The brake system is therefore less suitable for highly automated or autonomously driving motor vehicles.
  • the brake control device should be operated as quietly and energetically low.
  • the brake ⁇ control device for actuating hydraulically actuated wheel brakes which includes an electrically controllable pressure source, a radsammlung output pressure port for each wheel ⁇ brake and a pressure control valve assembly for adjusting wheel individual brake pressures at the outlet pressure ports, a radindividu for each output pressure port ⁇ includes input pressure port, which is connected via a hydraulic raulische connection with the output pressure port, wherein in the connection a hydraulically actuated isolation valve is arranged.
  • This brake control device can be connected in series between a brake control device known per se with a wheel-specific output pressure port for each wheel brake and at least part of the wheel brakes.
  • the invention has the advantage that an electrically controlled pressure build-up and a wheel-specific control of at least a part of the wheel brakes are still possible quickly and precisely even if one of the brake control devices continue by means of the other brake control device.
  • the brake control device according to the invention further has the advantage that it can optionally be supplemented in a vehicle or in a brake system known per se in order to enable highly automated driving or autonomous driving.
  • the brake control device according to the invention has the advantage that a switch to a pressure setting by means of the brake control device according to the invention, in which the isolation valves must be closed, quietly possible because the hydraulically actuated valve body of the isolation valves can be performed with very low mass. As a result, the noise is minimized when switching the isolation valves.
  • the separating valve is switched by an output pressure of the pressure source in the blocking position, so that the hyd ⁇ raulische connection between the inlet pressure port and outlet pressure ⁇ nicem port by driving the
  • Pressure source is easily separable. Also, such a closing of the isolation valves is energetically possible because no additional electrical power is needed for the isolation valves and the output pressure of the pressure source is already available for the pressure build-up.
  • the brake control device preferably comprises a container connection for connection to a pressurized medium reservoir which is at atmospheric pressure.
  • the container connection is particularly preferably connected to the pressure source in order to supply the pressure source with pressure medium. This offers the advantage that the brake control device can suck largely unge ⁇ prevents pressure fluid directly from the pressure fluid reservoir.
  • the pressure regulating valve arrangement preferably comprises for each
  • Output pressure port an electrically actuated outlet ⁇ valve arrangement with at least one analog controllable or analogized executed valve, wherein the output pressure port is connected via the outlet valve assembly with the container connection.
  • the outlet valve arrangement is preferably formed by a series circuit of a normally closed outlet valve and a normally open, analog controllable or analogized designed second valve.
  • the outlet valve arrangement is formed by a normally closed, analog controllable or analogized executed exhaust valve.
  • the pressure source for each output pressure port comprises a pump, wherein the pressure side of the pump is connected via a in the direction of the output pressure port nöff ⁇ nendes, spring-loaded check valve with the output ⁇ pressure port.
  • the pump When the pump is activated, this results in the connecting line between the pressure side of the pump Pump and the spring-loaded isolation valve, a back pressure corresponding to the spring preload, by means of which the associated isolation valve is actuated.
  • the pressure side of the pump is connected directly, ie only via the spring-loaded check valve, to the outlet pressure port. So there is no other valve or check valve in the connection.
  • the wheel brake-side connection of the spring-loaded check valve is preferably connected to the line section between the isolation valve and the output pressure port.
  • the suction sides of the pumps are connected to the container port.
  • the pumps are driven jointly by an electric motor.
  • Corresponding pumps are already widely used in conventional brake systems according to the return flow principle, are therefore inexpensive to produce and provide direct pressure medium flow to the pressure fluid reservoir sufficient pressure fluid flows, as quickly and sufficiently pressure medium can be sucked from the pressure fluid reservoir.
  • the pressure source comprises a pump, wherein the pressure side of the pump with each of the
  • Output pressure connections via a respective electrically actuated, normally closed, analog controllable or analogized designed inlet valve is connected.
  • the pressure side of the pump is connected to the inlet valves by means of a connecting line.
  • the suction side of the pump is connected to the container port.
  • a means for receiving pressure medium is connected to the connecting line. This smoothes any volumetric flow pulsations of the pump.
  • the means is designed as a hydraulic pressure accumulator. Examples of such hydraulic pressure accumulator pistons are ⁇ or diaphragm accumulator.
  • an electrically actuated, normally open, analog controllable or analogized executed dynamic pressure valve is preferably provided, via which the connecting line is connected to the container port. More preferably, the back pressure valve of the pump is connected in parallel, i. The suction side of the pump and the pressure side of the pump are connected to each other via the back pressure valve.
  • the brake control device is designed according to a preferred embodiment of the invention as a structural unit in the form of a brake control device with an electronic control and regulation unit and a hydraulic control and regulating unit, wherein the electronic control and regulating unit is designed for controlling the pressure regulating valve arrangement and the pressure source.
  • the (second) brake control device can simply be optionally added to a (first) brake control device of the main brake system (modular principle).
  • the invention also relates to a brake system for vehicles with hydraulically actuated wheel brakes and a first electro-hydraulic brake control device, which has a first pressure control valve arrangement for setting wheel-specific brake pressures, a first electrically controllable pressure source and a radindivari each for a hydraulically actuated wheel brake.
  • ducks output pressure port includes.
  • a second brake control device according to the invention is connected in series between the first brake control device and a group of wheel brakes.
  • the second brake control device comprises a second electrically controllable pressure source, a radindivi ⁇ Duellen output pressure port for each of the wheel brakes of the group of wheel brakes, a second pressure control valve assembly for setting wheel individual brake pressures at the outlet pressure connections and for each of their outlet pressure connections a wheel individual input pressure port, which via a hydraulic connection with the Output pressure port is connected, wherein in the connection a hydraulically actuated separating valve is arranged.
  • the second brake control device is connected in series between the output pressure ports of the first brake control device associated with the group of wheel brakes and the wheel brakes of the group of wheel brakes.
  • each one of the input pressure ports of the second brake control device is in each case connected to the corresponding output pressure port of the first brake control device.
  • the second brake control device is preferably provided for actuating and regulating at least the hydraulically actuatable wheel brakes of a front axle of the motor vehicle.
  • the group of wheel brakes is formed by the hydraulically actuated wheel brakes of a front axle of the motor vehicle.
  • the second brake control ⁇ device is designed for operation and control of all hydraulically actuated wheel brakes, ie that the group of wheel brakes is formed by all hydraulically actuated wheel brakes.
  • the brake system preferably comprises a pressurized medium reservoir which is under atmospheric pressure, wherein the second brake control device is connected to the pressure medium reservoir via a reservoir connection.
  • the pressure regulating valve arrangement of the second brake control device comprises preferably for each wheel brake from the group of wheel brakes an electrically operated discharge valve assembly with at least one analog controllable or analogized executed valve, wherein the wheel brake via the off ⁇ let valve assembly with the pressure fluid supply reservoir is connectable.
  • the first brake control device is designed as a structural unit in the form of a brake control device with a first electronic control unit and a first hydraulic control unit, wherein the first electronic control unit for controlling the first Pressure control valve assembly and the first pressure source is formed.
  • the second brake control device may be added or not as needed.
  • the brake control device according to the invention is added as an addition to a known, externally controllable brake system (particularly preferably a "by-wire" -Bremssystem or a conventional brake system with vacuum brake booster) as a redundant system, the inventive (second) brake control device in series between the (first) brake control device of the per se known brake system and a group of wheel brakes (ie the wheel brakes or a part of the wheel brakes) is switched.
  • the (second) brake control device according to the invention preferably adopts the brake functions, in particular the pressure build-up function in the corresponding wheel brake circuits and wheel-specific brake control interventions.
  • the brake control device performs not only simple braking functions but also an electronic brake force distribution (EBV) and / or an anti-lock control function (ABS) and / or vehicle dynamics functions (ESP) and / or other brake activations.
  • EBV electronic brake force distribution
  • ABS anti-lock control function
  • ESP vehicle dynamics functions
  • the intermediate second brake control device independently adjusts or regulates the (wheel) brake pressures necessary to perform an autopilot and / or driver requested braking action, which ultimately adjusted individual wheel brake pressures are still modified according to the needs of a blocking prevention and possibly a Fahrstabili- tucisregelung.
  • the brake system preferably comprises power supply terminals for at least two ⁇ , from each other independent sources of electrical energy ⁇ .
  • the first brake control device ⁇ Particularly preferred is powered by a first electric power source and the second brake control device from a second source of electrical energy with electrical energy.
  • FIG. 1 shows a first embodiment of a erfindungsge ⁇ MAESSEN brake control device for an exemplary brake system
  • FIG. 2 shows a second embodiment of a brake control device according to the invention for an exemplary brake system
  • FIG. 3 shows a third exemplary embodiment of a brake control device according to the invention for an exemplary brake system
  • Fig. 4 shows an embodiment of an inventive
  • Fig. 5 shows another embodiment of a fiction, ⁇ brake system.
  • a first embodiment of an inventive brake control device ⁇ is shown schematically.
  • the brake control device 70 is shown for four wheel brakes 50, 51, 52, 53, a reduction to less and an extension to more wheel brakes is easily possible.
  • Brake control device 70 is exemplified as an independent unit or a module, for example as a brake ⁇ control unit with an electronic control unit (ECU) and a hydraulic control and regulation unit (HCU) executed.
  • ECU electronice control unit
  • HCU hydraulic control and regulation unit
  • At the wheel-individual inlet pressure connections 30, 31, 32, 33 of the brake control device 70 is each a high-pressure resistant Connected brake line, which each comes from one of the wheel-specific output pressure ports 20, 21, 22, 23 of a only schematically indicated by dashed lines brake control device 60 of a main brake system.
  • At the wheel-individual output pressure ports 40, 41, 42, 43 of the brake control device 70 is each a high-pressure resistant
  • the brake control device 70 is hydraulically connected in series between the brake control device 60 of the main braking system, and the wheel brakes 50, 51, 52, 53 ge ⁇ on.
  • the exemplary brake control device 70 comprises at least one container port 81 for connection to a pressurized medium reservoir 80 which is under atmospheric pressure. In order to keep the number of ports low, this includes
  • Brake control device 70 advantageously exactly one container port.
  • Container port 81 is connected to the pressure source 1 for supplying the pressure source with pressure medium.
  • Brake control device 70 so the brake control device 60 of the main brake system is connected downstream and has the advantage that it can draw directly from the Druckstoffvor ⁇ storage container 80 pressure medium. Suction by the brake control device 60 would lead to insufficient pressure medium volume flows because of their flow resistance.
  • Brake control device 70 includes a pressure control valve ⁇ arrangement for adjusting wheel-specific brake pressures at the output pressure ports 40, 41, 42, 43 and an electrically controllable pressure source 1, and is thus designed for electrically ge ⁇ controlled construction of a system brake pressure and radindivi ⁇ duelle brake pressure control.
  • Each output pressure port 40, 41, 42, 43, a hydraulically actuated separating valve 3 is provided, which in a hyd ⁇ raulischen connection 10, 11, 12, 13 between the inlet pressure port 30, 31, 32, 33 and associated output pressure port 40, 41, 42 , 43 is arranged.
  • the isolation valves 3 are made open unconfined, so that in case of failure of the Bremsensteu ⁇ ervorides 70 provided by the brake control device 60, wheel-specific Radbremsdrücke be passed through the brake control device 70 and abut the output pressure ports 40, 41, 42, 43.
  • Separating valve is actuated by an output pressure of the pressure source 1, which is indicated by the dotted line per separating valve 3.
  • the isolation valve is switched to the blocking position with sufficient pressure at the control port.
  • the pressure regulating valve arrangement comprises an electrically actuatable outlet valve arrangement, for example for brake pressure reduction during anti-lock control (ABS).
  • ABS anti-lock control
  • the outlet pressure port 40, 41, 42, 43 is connected to the pressure medium reservoir 80 via the outlet valve arrangement.
  • the discharge valve assembly according to, for example formed by a series connection of a normally closed exhaust valve ge ⁇ 6 and a normally open controllable analog or analogized valve executed second. 7
  • the outlet connections of the valves 7 are connected to the container connection 81 via a common line section 4.
  • the electrically controllable pressure source 1 of the brake control ⁇ device 70 includes beispielsorient a high pressure pump 2a, 2b, 2c, 2d for each wheel 50, 51, 52, 53, which are driven by a common electric motor M.
  • the suction side 202a, 202b, 202c, 202d of each pump 2a, 2b, 2c, 2d is connected to the lower Atmospheric pressure fluid reservoir 80 connected.
  • the suction sides of the pumps are connected to the container port 81 via a common intake line section 8. The discharged during a Radbremstik- regulation via the Auslassventilanssenen in the pressure medium reservoir 80 pressure medium is thus the suction side again available.
  • the pressure side 102a, 102b, 102c, 102d of each pump 2a, 2b, 2c, 2d is connected to the associated outlet pressure port 40, 41, 42, 43 via a spring-loaded check valve 9 which opens in the direction of the associated wheel brake.
  • a pressure prevailing in the connecting line between the pressure side 102a, 102b, 102c, 102d of the pump and check valve 9 the associated separating valve 3 can be switched.
  • a back pressure corresponding to the Federvor ⁇ voltage is generated at the pressure side 102a, 102b, 102c, 102d of the respective pump 2a, 2b, 2c, 2d by the spring-loaded check valve 9, and through this the hydraulically actuated isolation valve 3 during active pump operation switched (closed).
  • Each wheel brake 50, 51, 52, 53 is thus associated with a “hydraulic module", which comprises the hydraulically actuated separating valve 3, the pump 2a, 2b, 2c, 2c with the check valve 9 and the exhaust valve assembly and is constructed the same for each wheel brake.
  • a pressure sensor 5 for determining the pressure at the outlet pressure ports 40 and 43 is provided in the brake control device 70 for the wheel brakes 50 and 53, respectively.
  • the brake control device 70 includes, for example, a pressure sensor 15 for determining the pressure at the input pressure port 33.
  • pressure fluid reservoir of conventional hydraulic brake systems comprising two chambers which are assigned to the two pressure chambers of the bremspedalbetätigbaren master brake cylinder and the pressure medium reservoir of the known fremdan concedebaren "by-wire" braking system and comprise three chambers.
  • the Druckstoffvor ⁇ storage container 80 each have a chamber more, wherein the additional third and fourth chamber is provided for connection to the Bremsensteu ⁇ ervorides 70th from the third and fourth chamber which is provided 70 sucked hydraulic fluid volume in the operation of the brake control device and in the third or fourth chamber, the excess pressure fluid volume, eg at a Anti-skid control by the brake control device 70, drained.
  • Brake control device 70 is provided, for example, as a supplement to a brake control device 60 of a main brake system, which itself is an electrically controllable
  • Pressure source 63 and a pressure regulating valve assembly 62 for adjusting wheel-individual braking pressures i. which is designed for electrically controlled construction of a system brake pressure and for wheel-specific brake pressure control.
  • the brake control device 60 as an independent unit or a module, for example as a brake ⁇ control unit (HECU) with an electronic control and Re ⁇ geliki (ECU) and a hydraulic control and regulating ⁇ unit (HCU) executed.
  • the electronic control and Re ⁇ gel unit is assembly 62 thereby to control the Druckregelventil- and the pressure source 63 is formed.
  • the brake control device 60 (regular main brake module) takes over the system pressure build-up in the normal brake operation and the brake control device 70 (backup module) is ready in case the system pressure supply function of the brake control device 60 fails.
  • the brake control device 70 takes over the pressure build-up by means of the pressure source 1.
  • Bremsengnafestvor ⁇ direction 70 can build a driver-independent pressure and modulate individual wheel by means of the pressure control valve assembly.
  • a fallback mode which is activated, for example, when no electrical energy is available to the brake system, that is to say the brake control devices 60 and 70, the brake control device 70 permits a hydraulic pressure build-up applied by the driver.
  • the brake control devices 60 and 70 each include a separate electronic control unit (ECU) for driving the respective pressure source and the electrically operable valves.
  • Brake control device 70 thus includes the necessary for a redundancy of the brake system second elekt ⁇ ronic control unit and the second pressure source, so that in the overall system, two independent electronic control and regulation units and two independent electrically controllable pressure sources are present.
  • Another advantage of the brake system according to the invention is that the brake pressures can be individually modulated with high availability, either by means of the pressure control valve arrangement of the brake control device 60 (main brake module) or by means of the pressure control valve arrangement of the brake control device 70 (backup module). This can be the
  • Blocking prevention function of the brake system even with electrically inactive brake control device 60 are maintained.
  • the brake control function advantageously at least two independent electrical power supplies are provided in the brake system.
  • the brake controller 60 is powered by a first electrical power supply and the brake controller 70 is powered by a second electrical power supply.
  • the brake system or the main brake system preferably comprises further components known per se, such as e.g. a brake pedal or a brake master cylinder brake master cylinder.
  • the brake control device 60 is provided with the
  • FIG. 2 a second embodiment of an OF INVENTION ⁇ to the invention the brake control device 70 is schematically illustrated.
  • the outlet valve arrangement of the pressure regulating valve arrangement is formed by a normally closed, analog controllable or analogized exhaust valve 16 per pressure control loop. That is, the exhaust valve 6 and the valve 7 of the first embodiment are replaced by the exhaust valve 16. Otherwise, the first and the second embodiment correspond.
  • a third embodiment of an inventive brake control device ⁇ 170 is shown schematically.
  • Brake control device 170 corresponds with respect to the exhaust valve assembly with the normally closed, analog controllable or analogized executed exhaust valve 16 and the hydraulically actuated separating valve 3 per output pressure port 40, 41, 42, 43 the second embodiment ⁇ example of Fig. 2, wherein the separating valve 3 also in the hydraulic connection 10, 11, 12, 13 between input pressure port 30, 31, 32, 33 and associated output pressure port 40, 41, 42, 43 is arranged and can be switched by an output pressure ⁇ of the pressure source 1 in the blocking position.
  • the pressure source 1 of the third embodiment comprises, unlike the first and second embodiments, only a high pressure pump 2, which is driven by an electric motor M. So there is a central print delivery.
  • the suction side 202 of the pump 2 is connected via a Ansauglei ⁇ processing section 8 with the container port 81 and thus with the pressure medium reservoir 80 which is under atmospheric pressure.
  • the discharged during a Radbremstikregelung via the Auslassventilan Aunt in the pressure medium reservoir 80 pressure medium is thus the pump suction side again available.
  • Each outlet pressure connection 40, 41, 42, 43, the pressure ⁇ control valve assembly also includes an electrically actuated, normally closed, analog controllable or analogized executed inlet valve 17, via which the pressure side 102 of the pump 2 with the output pressure port 40, 41, 42, 43 is connected ,
  • the pressure side 102 of the pump 2 is connected by a common connection conduit 29 to the intake valves 17, wherein the radbrems worne terminal of each A ⁇ leak valve 17 to the connecting line section between the separating valve 3 and outlet pressure port 40, 41, 42, 43 of the corresponding compound 10, 11, 12 , 13 is connected.
  • the inlet valves 17 can from the "central" output pressure the pump 2, the wheel individually required braking pressures are derived.
  • an electrically operable, normally open, analog controllable or analogized designed dynamic pressure valve 18 is provided in the brake control device 170.
  • the connecting line 29 is connected via the dynamic pressure valve 18 to the container port 81.
  • the pump 2 is driven and the dynamic pressure valve 18 is energized.
  • the result is a back pressure on the pressure side 102 of the pump 2, so that the separating valves 3 are switched to their closed position.
  • a wheel-individual brake pressure is adjusted with the aid of the valve pair from intake valve 17 and exhaust valve 16 per wheel brake.
  • a piston accumulator 19 is further connected according to the example for receiving pressure medium. This serves to smooth the time course of the pump pressure, so that any volume flow pulsations of the pump are mitigated and the pump pressure, for example, collapses only slightly when an inlet valve 17 is suddenly fully opened for a particularly fast Radbrems ⁇ pressure build-up.
  • a brake control device (not shown), which essentially corresponds to the brake control device 170 of the third exemplary embodiment with only one pump 2, but instead of the exhaust valve 16 comprises a series connection of the outlet valve 6 and the second valve 7 according to the first exemplary embodiment, is likewise within the meaning of Invention.
  • the brake system includes four hydraulically actuable wheel brakes 50, 51, 52, 53 and a first brake control device 60 (so-called main ⁇ brake system), which includes a rad réelle réelle réellean- circuit 20, 21, 22, 23 for each of these wheel brakes 50, 51, 52, 53.
  • Brake control device 60 further comprises an electrically controllable pressure source 63 and a pressure control ⁇ valve assembly 62 for adjusting wheel individual brake pressures at the output pressure ports 20, 21, 22, 23.
  • the brake control device 60 as an independent unit or a module, for example as a brake ⁇ control unit (HECU) with an electronic control and Re ⁇ geliki (ECU) and a hydraulic control and regulating ⁇ unit (HCU) executed.
  • the electronic control and regulating unit is designed to control the pressure regulating valve arrangement 62 and the pressure source 63.
  • the brake system further comprises a second brake control ⁇ device 70, which is provided for the actuation and control of only a portion of the hydraulically actuated wheel brakes (Im
  • the brakes ⁇ control device 70 comprises a wheel-specific input pressure port 30, 31, and a wheel-specific output pressure port 40, 41 for each of the two wheel brakes 50 and 51, wherein said input pressure port 30 and 31, or via a high pressure-resistant brake line to the corresponding output pressure port 20 21 of the first brake control device 60 is connected and the output pressure port 40 and 41 is connected via a respective high-pressure resistant brake line to the wheel brake 50 and 51, respectively.
  • the output pressure port 22 or 23 of the first brake control device 60 is connected via a high-pressure resistant brake line directly to the wheel brake 52 and 53, which are assigned to the left rear wheel HL and the right rear wheel HR.
  • the brake lines may extend outside the brake control device 70. Alternatively, the brake lines may also pass through the brake control device 70.
  • the second brake control device 70 is thus hydraulically connected in series between the first brake control device 60 and the output pressure connections 20, 21 of the first brake control device 60 and the wheel brakes 50, 51 assigned to the wheel brakes 50, 51.
  • the second brake control device 70 comprises at least one container connection 81 for connection to a pressure medium reservoir 80 which is under atmospheric pressure.
  • a further embodiment of a brake system according to the invention is shown schematically.
  • the brake system comprises four hydraulically actuable wheel brakes 50, 51, 52, 53, a first brake control device 60, which has a wheel-specific output pressure port 20, 21, 22, 23 for each of these wheel brakes 50, 51, 52, 53, an electrically controllable Pressure source 63 and a pressure control valve assembly 62 for adjusting wheel-specific brake pressures at the output pressure ports 20, 21, 22, 23, and a second brake control device 70, which is provided for operating and controlling the group of wheel brakes 50, 51.
  • the second brake control device 70 includes a wheel-individual input pressure port 30, 31 and a wheel-individual output pressure port 40, 41 for each of the two wheel brakes 50 and 51, wherein the input pressure port 30 or 31 is connected to the corresponding output pressure port 20 or 21 of the first brake control device 60 and the output pressure port 40 and 41 is connected to the wheel brake 50 and 51, respectively.
  • the second brake control device 70 is thus hydraulically connected in series between the first brake control device 60 and the output pressure connections 20, 21 of the first brake control device 60 and the wheel brakes 50, 51 assigned to the wheel brakes 50, 51.
  • the output pressure port 22 or 23 of the first brake ⁇ control device 60 is connected directly to the wheel brake 52 and 53, respectively.
  • the brake lines, as shown in Fig. 5, extend outside of the brake control device 70. Alternatively, the brake lines may also pass through the brake control device 70.
  • the brake system according to the invention fulfills the functional requirements for highly automated driving. suitable brake system met.

Abstract

L'invention concerne un dispositif de commande de frein (70, 170) pour des freins de roue (50, 51, 52, 53) pouvant être actionnés hydrauliquement d'un système de freinage de véhicule. Le dispositif de commande de frein (70, 170) comprend au moins une source de pression (1) pouvant être commandée électriquement, un raccord de pression de sortie (40, 41, 42, 43) individuel par roue pour chaque frein de roue et un système de vannes de régulation de pression (6, 7 ; 16 ; 16, 17) destiné à régler des pressions de freinage individuelles par roue au niveau des raccords de pression de sortie. Le dispositif de commande de frein comprend un raccord de pression d'entrée (30, 31, 32, 33) individuel par roue pour chaque raccord de pression de sortie (40, 41, 42, 43), lequel est relié au raccord de pression de sortie (40, 41, 42, 43) par le biais d'un liaison hydraulique (10, 11, 12, 13). Une vanne d'isolation (3) pouvant être actionnée hydrauliquement est montée dans chaque liaison (10, 11, 12, 13). Une deuxième invention concerne en outre un système de freinage de véhicule avec lequel un tel dispositif de commande de frein (70, 170) est monté en aval d'un premier dispositif de commande de frein (60). Les deux inventions conviennent particulièrement à des véhicules fortement automatisés ou à conduite autonome.
PCT/EP2015/078944 2014-12-16 2015-12-08 Dispositif de commande de frein et système de freinage pour véhicules WO2016096531A1 (fr)

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DE102014225956.8A DE102014225956A1 (de) 2014-12-16 2014-12-16 Bremsensteuervorrichtung sowie Bremsanlage für Fahrzeuge
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WO2018219649A1 (fr) * 2017-05-31 2018-12-06 Robert Bosch Gmbh Système de freinage de véhicule
WO2019011858A1 (fr) * 2017-07-12 2019-01-17 Continental Teves Ag & Co. Ohg Système de freinage
WO2019158242A1 (fr) * 2018-02-15 2019-08-22 Robert Bosch Gmbh Système de freinage pour véhicule électrohydraulique assisté par une force extérieure pour un véhicule routier à déplacement autonome

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DE102017216118A1 (de) 2016-10-11 2018-04-12 Continental Teves Ag & Co. Ohg Verfahren zum Betrieb einer elektrohydraulischen Bremsanlage und Bremsanlage
DE102017213858A1 (de) * 2017-08-09 2019-02-14 Continental Teves Ag & Co. Ohg Bremsanlage für Kraftfahrzeuge
DE102021206800A1 (de) 2021-06-30 2023-01-05 Continental Automotive Technologies GmbH Elektrohydraulische Bremsanlage und Verfahren zur Steuerung einer elektrohydraulischen Bremsanlage
DE102021213530A1 (de) 2021-11-30 2023-06-01 Continental Automotive Technologies GmbH Verfahren zur Regelung der hydraulischen Flüssigkeitsmenge in einer elektrohydraulischen Bremsanlage und elektrohydraulische Bremsanlage
DE102021213709A1 (de) 2021-12-02 2023-06-07 Continental Automotive Technologies GmbH Verfahren zum Nachfüllen eines Primärdruckerzeugers in einer elektrohydraulischen Bremsanlage und elektrohydraulische Bremsanlage
KR20230171173A (ko) 2022-06-13 2023-12-20 현대모비스 주식회사 전자식 유압 브레이크 장치

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WO2019158242A1 (fr) * 2018-02-15 2019-08-22 Robert Bosch Gmbh Système de freinage pour véhicule électrohydraulique assisté par une force extérieure pour un véhicule routier à déplacement autonome

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