EP2790984A1 - Procédé pour purger une pompe de charge d'un accumulateur et dispositif de purge pour une pompe de charge d'un accumulateur de liquide - Google Patents

Procédé pour purger une pompe de charge d'un accumulateur et dispositif de purge pour une pompe de charge d'un accumulateur de liquide

Info

Publication number
EP2790984A1
EP2790984A1 EP12780465.6A EP12780465A EP2790984A1 EP 2790984 A1 EP2790984 A1 EP 2790984A1 EP 12780465 A EP12780465 A EP 12780465A EP 2790984 A1 EP2790984 A1 EP 2790984A1
Authority
EP
European Patent Office
Prior art keywords
storage
pressure
inlet valve
loading pump
venting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP12780465.6A
Other languages
German (de)
English (en)
Inventor
Franz Hanschek
Berthold Kaeferstein
Harald Hermann
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2790984A1 publication Critical patent/EP2790984A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • 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
    • 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
    • B60T8/4077—Systems in which the booster is used as an auxiliary pressure source

Definitions

  • the invention relates to a method for venting a storage loading pump. Furthermore, the invention relates to a ventilation device for a storage loading pump of a
  • Liquid storage Liquid storage, a brake booster device and brake systems.
  • DE 199 35 371 A1 describes a method and a device for controlling components in a vehicle, in particular for controlling a pump for
  • the invention provides a method for venting a storage loading pump with the
  • Brake booster device having the features of claim 13, a brake system with the features of claim 14 and a brake system with the features of claim 15.
  • Call memory pump or as a flushing device for a storage loading pump of a liquid storage As described below, the present invention provides a low cost and low labor cost, or a low cost Energy consumption, executable possibility for venting a storage loading pump of a liquid storage.
  • the frequently occurring problem is one
  • Brake fluid is conditional.
  • the present invention ensures a rapid restoration of the full functionality of a
  • Storage charging pump defies an air intake.
  • Storage charge pump is advantageously used, to which air pumps are not attachable due to a pumped air space and / or an opening pressure of the exhaust valve.
  • air pumps on a pumped air space and / or an opening pressure of the exhaust valve are advantageously used, to which air pumps are not attachable due to a pumped air space and / or an opening pressure of the exhaust valve.
  • Storage tank pump can be saved.
  • the present invention is less expensive than a trained for venting a storage loading pump air pump feasible.
  • the present invention is advantageously applicable to systems whose
  • Liquid container with a relatively low pressure such as the atmospheric pressure
  • a liquid container with a low pressure may for example be a brake fluid reservoir.
  • the present Invention is thus advantageously applicable to a variety of systems, such as braking systems.
  • Liquid systems a functional impairment of the storage loading pump, in particular a delivery stop the storage loading pump, are quickly and reliably fixed. In this way, the capacity of the storage loading pump is steigerbar.
  • improved comfort for the driver of a vehicle equipped with the brake system can be achieved by the improved guarantee of the full functioning of the accumulator charge pump.
  • the driver can be relieved in terms of time and cost, since he does not have to search for a workshop for venting the storage loading pump.
  • liquid is transferred from the liquid reservoir through the at least one opened inlet valve and the at least one opened outlet valve, which is built up a back pressure on the suction side of the storage loading pump.
  • At least one storage charge state variable and / or at least one storage charge state change variable may be determined prior to opening the at least one intake valve and the at least one exhaust valve.
  • the at least one inlet valve and the at least one outlet valve can be opened. This is advantageous because, for example, when a delayed pressure build-up is detected in the liquid reservoir, despite the fact that the storage charge pump is operated, it is highly probable that air has penetrated into the storage charge pump.
  • an unnecessary opening of the at least one intake valve and the at least one exhaust valve in this situation can be omitted.
  • the at least one inlet valve and / or the at least one outlet valve may be pulsed when opened in open condition. Under a pulsed control of the at least one inlet valve or the at least one
  • Storage charging pump can be adjusted.
  • the at least one outlet valve is opened during the presence of the at least one inlet valve in its closed state. Thereafter, the at least one inlet valve is opened after the opening of the at least one outlet valve.
  • a lower slope of the built-up on the suction side of the at least one storage loading pump back pressure can be ensured.
  • a jerky growth of the built-up dynamic pressure can be prevented.
  • a reduction of the dynamic pressure is possible in this way.
  • the at least one inlet valve and / or the at least one outlet valve can be pulsed when opened with a predetermined phase difference in its open state. This acts automatically in an advantageous phase difference and corresponding opening and closing times, a presence of the at least one inlet valve in its closed state during opening of the at least one exhaust valve and the opening of the at least one inlet valve after opening of the at least one exhaust valve.
  • Inlet valve as the at least one inlet valve and after opening a first exhaust valve as the at least one outlet valve at least one pressure variable with respect to a decreasing accumulator pressure and / or an increasing dynamic pressure determined and compared with at least one comparison variable. In this way it can be determined whether the opening of only one intake and exhaust valve is sufficient to build up a back pressure for venting the accumulator charge pump.
  • At least one pressure variable is below the at least one comparison variable, at least one second inlet valve, via which the fluid reservoir is connected to the filling volume, and / or at least one second outlet valve, via which the filling volume is connected to the suction side of the storage loading pump is to be opened.
  • the vehicle speed of a vehicle equipped with the brake booster device is determined before venting the storage loading pump.
  • the bleeding of the accumulator charging pump is performed only at a vehicle speed of the vehicle equipped with the brake booster device below and / or equal to a predetermined maximum speed.
  • the venting of the storage loading pump is exposed at least for a predetermined time interval. After the predetermined time interval, the (actual) vehicle speed of the vehicle equipped with the brake booster device and the preset maximum speed can be compared again.
  • the venting of the storage loading pump will be carried out only at a standstill of the equipped with the brake booster device vehicle, wherein at a vehicle speed not equal to zero, the venting of
  • Storage charge pump is exposed at least for the predetermined time interval. In this way it can be prevented that, by opening the at least one inlet valve, a pressure builds up in the pressure chamber and thus the vehicle during a by means of Brake booster device is braked. This is a driver irritating slowing down of the vehicle while driving preventable.
  • a brake booster device with a corresponding ventilation device also brings about the above-mentioned advantages.
  • FIG. 2 is a schematic representation of a brake system for explaining a second embodiment of the method for venting a storage loading pump
  • Fig. 3 is a schematic representation of an embodiment of
  • Venting device for a storage loading pump of a liquid storage is a Venting device for a storage loading pump of a liquid storage.
  • FIG. 1 shows a flowchart for illustrating a first embodiment of the method for venting a storage loading pump.
  • a method step S1 at least one inlet valve via which a can be filled by means of the storage loading pump Liquid storage is connected to a fillable by means of the liquid storage filling volume open.
  • a method step S2 at least one inlet valve via which a can be filled by means of the storage loading pump Liquid storage is connected to a fillable by means of the liquid storage filling volume open.
  • the filling volume which can be filled by means of the liquid reservoir can in particular be, for example, a chamber (pressure chamber) whose volume can be varied in size by filling / emptying. Examples of a suitable filling volume which can be filled by means of the liquid reservoir are given below.
  • Liquid storage so by the at least one opened inlet valve and the at least one opened outlet valve transfers that on the suction side of the
  • Storage charging pump can be repaired or prevented.
  • the method can also be an optional
  • the ascertained storage charge state variable can be, for example, the level of the
  • the determined storage charge state change amount may be, for example, a
  • Fill level increase and / or a memory pressure change within a certain time and / or during an executed pumping capacity of the storage loading pump include.
  • the ascertainable storage state of charge size and / or storage state of charge change variable is not limited to the examples listed here.
  • the ascertained storage charge state variable and / or storage charge state change variable may then be compared with at least one predefined minimum charge state variable and / or minimum charge state change variable. If the at least one storage charge state variable under the at least one predetermined
  • step S3 it can be ensured that the venting of the
  • Storage charge pump is executed only if (using the comparison described above) can be reliably determined that air with a high probability in the
  • the method can be interrupted if the at least one storage charge state variable is above the at least one predefined minimum charge state variable and / or the at least one
  • method steps S1 and S2 can also be carried out routinely automatically even without method step S3 after a predetermined time interval, without the presence of air in the storage loading pump 10 being detected beforehand.
  • the method steps S1 and S2 can be carried out simultaneously.
  • the at least one inlet valve and the at least one outlet valve can be controlled into the open state in a comparatively long opening phase.
  • the at least one inlet valve and / or the at least one outlet valve may be pulsed open when opened to open.
  • a pulsed opening of the at least one inlet valve or the at least one outlet valve may include a
  • Actuation of the respective valve are understood, in which this is driven with a predetermined frequency and / or period for a certain opening and / or closing time. This can also be described as a timed opening of the respective valve.
  • the pulsed opening of the at least one inlet valve or of the at least one outlet valve can be carried out in a simple manner.
  • the method steps S1 and S2 can also be carried out successively or partially overlapping.
  • the method step S2 can also be started before the beginning of the method step S1. This can also be described in such a way that, during the presence of the at least one inlet valve in the closed state, the at least one outlet valve is opened. The at least one inlet valve is opened in this case after opening the at least one exhaust valve. In this way, a jerky pressure build-up on the suction side of the
  • Phase difference can be ensured that the at least one inlet valve after opening the at least one exhaust valve, i. during an opening period of the at least one exhaust valve is opened. This prevents a jerky
  • At least one pressure variable with respect to a decreasing accumulator pressure and / or an increasing stagnation pressure can be determined. Subsequently, the at least one size with at least one
  • Comparative size can be compared. If the at least one pressure variable lies below the at least one comparison variable, at least one second inlet valve, via which the liquid reservoir is connected to the filling volume that can be filled by the liquid reservoir, and / or at least one second outlet valve, via which the filling volume is connected to the suction side of the storage charge pump is to be opened. Thus, an insufficient for venting the at least one storage loading pump back pressure by the opening of at least one second inlet valve or a second exhaust valve is steigerbar. If, however, the at least one print size is above the at least one comparison quantity, it is possible to open a second one
  • Inlet valve and / or a second exhaust valve can be omitted.
  • the liquid storage is discharged only by the amount of liquid which is necessary to build a desired back pressure.
  • it can be prevented that by moving too large a volume of liquid out of the liquid reservoir via at least one second opened inlet valve in the means of the liquid storage fillable
  • the height of the dynamic pressure built up by means of the method described here can be dependent on the ambient temperature. As a rule, the dynamic pressure is (significantly) higher at low temperatures than at higher temperatures. Due to the pulsed opening of the valves 28 and 42 and / or by determining a pressure variable with respect to the decreasing accumulator pressure and / or the increasing stagnation pressure and comparing the pressure variable of the comparison variable before increasing the number of open valves 28 and 42, the back pressure can despite the Temperature dependence can be set to a preferred value.
  • the method described in the upper paragraphs can be used, in particular, to vent a storage loading pump of a liquid reservoir for establishing a pressure in a pressure chamber of a brake booster device (as the filling volume). It should be noted, however, that the feasibility of the method does not entail venting a storage loading pump with a
  • Brake fluid amplifier device co-operating liquid storage is limited.
  • the feasibility of the method is not limited to the venting of a storage loading pump used in a brake system.
  • FIG. 2 shows a schematic representation of a brake system for explaining a second embodiment of the method for venting a storage loading pump.
  • Liquid reservoir is vented to build up a pressure in a variable volume / a chamber (pressure chamber) of a brake booster device is not limited to such a brake system.
  • the schematically reproduced brake system has a storage loading pump 10 with a motor 12, by means of which a pressure in a pressure accumulator 14 can be built up. This can also be described in such a way that the pressure accumulator 14 can be loaded / filled by means of the accumulator charging pump 10.
  • the accumulator 14 may be formed in particular as a high-pressure accumulator. However, the method described below is not on the loading limited such a pressure sensor 14. Likewise, the formation of the storage loading pump 10 is to be understood as a three-piston pump only by way of example.
  • the accumulator 14 is hydraulically connected to a brake booster 16 / master brake cylinder 18 of the brake system so that an internal pressure in at least one pressure chamber 20 of the brake booster 16 / master cylinder 18 can be increased by the pressure built up in the pressure accumulator 14.
  • the master cylinder 18 may be formed as a tandem master cylinder. However, the method described below is not based on such
  • the pressure accumulator 14 is provided with an antechamber 22 of the
  • Inner volume of the master cylinder 18 are understood, with an adjustable component 24 of the master cylinder 18, the antechamber 22 delimits from the at least one pressure chamber 20 that a total volume of the prechamber 22 and the at least one pressure chamber 20 remains constant even when adjusting the adjustable component 24 , Thus, an increase in volume of the prechamber 22 causes
  • the pressure accumulator 14 thus acts as a brake booster of the brake system. (It may also be described that in the brake system of the brake booster by a hydraulic device, which includes the accumulator charging pump 10 and the pressure accumulator 14 is realized.) As will be described in more detail below, the illustrated brake system with the hydraulic device, for example in a hybrid or electric vehicle.
  • the brake system represented can be described as a HAS (Hydraulic Actuation System for Hybrid Electrical Vehicles).
  • the storage loading pump 10 and the accumulator 14 are hydraulically connected via a line 26 to the pre-chamber 22.
  • a plurality of inlet valves 28 can be formed via branch points 30 formed in the line 26 and via lines 32 formed in another line 32
  • Pressure sensor 14 may be connected.
  • the accumulator charging pump 10 as a three-piston pump, it is advantageous to use three inlet valves 28.
  • the brake system described below is not limited to a specific number of intake valves 28.
  • An intake side of the accumulator charge pump 10 is at least one in a
  • the brake medium reservoir 40 can via at least one flow opening 41 with the at least one pressure chamber 20 of the
  • Main brake cylinder 18 may be connected.
  • the suction side of the accumulator charge pump 10 is also connected to the prechamber 22 via at least one exhaust valve 42 / pressure relief valve.
  • a brake medium volume from the prechamber 22 can be pumped into the pressure accumulator 14 through the at least one opened outlet valve 42 by means of the storage charge pump 10.
  • This causes a rapid decrease in volume of the pre-chamber 22, and thus a rapid pressure reduction in the at least one pressure chamber 20 of the master cylinder 18.
  • multiple exhaust valves 42 in particular three exhaust valves 42, input side, each with a formed in the line 26 branch point 44 and the output side with a be formed in the return line 36 formed branch point 46.
  • Brake booster may be controlled using at least one sensor 48 or 50.
  • a first sensor 48 may be arranged as a pressure sensor on the delivery side of the storage loading pump 10 and the pressure accumulator 14.
  • a second sensor 50 which may also be designed as a pressure sensor, is preferably connected to the line 26 in this case.
  • the volume of the pre-chamber 22 can be adjusted so that in the at least one
  • an internal pressure corresponding to one of an automatic Speed control system (ACC) and / or an emergency brake automatic preset target vehicle deceleration is set active.
  • ACC automatic Speed control system
  • the accumulator charge pump 10 and the accumulator 14 can be used in a brake system equipped with an automatic cruise control system and / or an automatic emergency brake system.
  • a driver may receive from the accumulator charging pump 10 and the vehicle
  • Accumulator 14 can be supported. For example, by means of at least one
  • Actuating sensor 54 such as by means of a brake force sensor and / or a brake travel sensor, a predetermined by the driver target delay the
  • Vehicle speed can be determined. Subsequently, by means of
  • Storage charge pump 10 the pressure accumulator 14 and the valves 28 and 42, the volume of the pre-chamber 22 are actively adjusted so that in at least one hydraulically connected to the at least one pressure chamber 20 via a supply line 56 (here only schematically reproduced) brake circuit 58, or in at least one (not sketched) wheel brake cylinder of the at least one brake circuit 58, a desired brake pressure is present.
  • a supply line 56 here only schematically reproduced
  • wheel brake cylinder of the at least one brake circuit 58 or in at least one (not sketched) wheel brake cylinder of the at least one brake circuit 58, a desired brake pressure is present.
  • the brake system reproduced here is not limited to a specific design of the at least one brake circuit 58. For more detailed explanations of the at least one brake circuit 58 is therefore omitted.
  • the accumulator charge pump 10, the pressure sensor 14 and the valves 28 and 42 thus ensure improved braking comfort for the user of the brake system.
  • a multiple of a driver braking force exerted on the brake actuation element 52 can be applied to the adjustable component 24.
  • the driver does not have to exert himself the entire applied to build up the desired brake pressure force on the brake actuator 52.
  • the illustrated brake system may also be used in conjunction with a generator (not shown) to brake a vehicle.
  • a generator not shown
  • the brake pressure present in the at least one brake circuit 58 can be varied in this case taking into account an increase or decrease in the generator braking torque.
  • the brake pressure in the at least one brake circuit 58 can be reduced in accordance with the time increase of the generator braking torque.
  • the brake pressure in the at least one brake circuit 58 are increased so that a time decrease of the generator braking torque is compensated.
  • Storage charge pump 10 the pressure accumulator 14 and the valves 28 and 42 is thus an advantageous blending of the generator braking torque executable.
  • Master cylinder 18 a sensing cylinder 60 may be formed.
  • brake actuator 52 with an adjustable component 62 of the Sensiansszylinders 60, which a
  • Component 24 of the master cylinder 18 may be connected to a piston 68 which projects at least partially into the pressure chamber 66 of the sensing cylinder 60.
  • the pressure in the pressure chamber via a pressure adjusting device, which will be described in more detail below, variable.
  • Pressure chamber 20 of the master cylinder 18 decoupled restoring action are exerted on the brake actuator 52.
  • the driver feels a standard brake feel (pedal feel).
  • the driver has the option of active via the sensing cylinder 60 in the
  • the pressure chamber 66 of the Sens mecanicszylinders 60 may be hydraulically connected via a line 72 with a formed in the return line 36 branch point 74.
  • the hydraulic connection between the pressure chamber 66 of the Sens effetszylinders 60 and the conduit 72 is formed as an opening which is closed at a slight actuation of the brake actuator 53.
  • Sensing cylinder 60 and a spring 76 may be formed so that it is not closed / sealed even with a significant operation of the brake operating member 52.
  • a continuously adjustable valve 80 which is connected via a line 82 to the spring 76 and via a line 84 to the pressure chamber 66, the pressure in the
  • Pressure chamber 66 can be set to a desired value active.
  • the continuously adjustable valve 80 can therefore also be designated as a simulator valve.
  • Another continuously controllable valve 86 is connected via a line 88 with a branch point 90 formed in the line 84 and via a line 92 with a branch point 94 formed in the line 26. Also, this continuously adjustable valve 86 can be used to set a desired pressure in the pressure chamber 66 of the Sens mecanicszylinders 60.
  • the method also includes determining a
  • a storage charge state size and / or a storage load state change amount are stored in a storage charge state.
  • Storage capacity change amount are already indicated above.
  • the sensor 48 can be used for this purpose. In this way, in particular by comparing the ascertained storage charge state variable and / or a
  • Charge gradient monitoring automatically be performed routinely after a predetermined time interval without the presence of air in the air
  • venting routine taking into account a
  • Vehicle speed of a vehicle equipped with the brake system can be started or delayed.
  • the venting of the storage loading pump 10 can be carried out, for example, only at a vehicle speed below and / or equal to a predetermined maximum speed.
  • a predetermined maximum speed the venting of the storage loading pump 10 can be suspended at least for a predetermined time interval. After the time interval, the vehicle speed can be determined again.
  • the venting of the storage loading pump 10 is only at a standstill, d. H.
  • venting of the accumulator charge pump is suspended at least for the predetermined time interval, which is particularly advantageous when comparing the at least one vehicle speed with the vehicle a memory fill size is determined with the at least one predetermined minimum level size, that despite a presence of air in the storage loading pump 10, the liquid reservoir 14 can be filled at least up to a certain minimum level size
  • the venting routine by opening the at least one inlet valve 28 / pressure build-up valve and the at least one outlet valve 42 / pressure relief valve, a volume flow is generated from the liquid reservoir 14 via the open valves 28 and 42 to the return line 36.
  • the above-described embodiments of the method for venting the storage loading pump 10 may be used. By means of these method steps, the volume flow can be generated so that a defined dynamic pressure is present on the suction side of the storage loading pump 10.
  • Storage charge pump 10 the flow resistance of the housing bore and / or the filter screen of the return line 36 can be used. Due to the length of the
  • Return line 36 and its line diameter causes the opening of the valves 28 and 42, the desired back pressure on the return pump 10.
  • the method uses special properties of the return line 36 to produce the desired
  • the motor 12 of the accumulator charging pump 10 is controlled to an active state, in which he drives the storage loading pump 10. This is done regardless of whether the valves 28 and 42 are driven pulsed in a comparatively long opening phase or with comparatively short opening and closing times. This can also be described as operating the motor 12 to drive the accumulator charging pump 10 during opening or partial energization of the valves 28 and 42. Due to the dynamic pressure on the suction side of the storage loading pump 10, which can also be designated as a preprint, it is forcibly filled. In this way, the (possibly) present in the storage loading pump 10 air is squeezed out, so that a full functionality of the vented storage loading pump 10 is ensured again. In addition, the property can be used that with the removal of the present in the liquid storage 14
  • Storage loading pump 10 decreases, which favors a venting of the storage loading pump 10.
  • Brake fluid reservoir 40 is displaceable. Thus, after venting the
  • Storage charging pump 10 ensures a rapid reduction of the dynamic pressure.
  • Fig. 3 shows a schematic representation of an embodiment of the venting device for a storage loading pump of a liquid storage.
  • the ventilation device 100 shown schematically in FIG. 3 can be used, for example, in the brake system already described. It should be noted, however, that the applicability of the venting device 100 is not limited to this braking system.
  • venting device 100 can also be used in a system which comprises only the following components of the above:
  • Filling volume is connected and by means of which a pressure in the filling volume can be built up, and the storage loading pump 10, the suction side is connected via at least one outlet valve 42 with the filling volume and by means of which liquid from a
  • Brake fluid reservoir 40 is pumped into the fluid reservoir 14.
  • Venting device 100 is thus formed in a variety of different
  • the ventilation device 100 can be advantageously used in any brake system which has the liquid reservoir 14 and the accumulator charge pump 10. It is sufficient if the liquid reservoir 14 via at least one
  • Inlet valve 28 is connected to a filling volume of the brake system and by means of the pressure accumulator 14, a pressure in the filling volume can be built, while the suction side of the accumulator charge pump 10 is connected via at least one outlet valve 42 with the filling volume and by means of the accumulator charging pump 10 liquid from a
  • Brake fluid reservoir 40 is pumped into the fluid reservoir 14.
  • the advantageous design of the filling volume as a pressure chamber of a brake booster is thus to be interpreted merely as an example.
  • the further component shown in FIG. 3 can be used in the construction of a cooperating with the venting device 100
  • the ventilation device 100 has an evaluation device 102, by means of which at least one of the evaluation device 102 provided SpeicherladeSullivans concentrate and / or Speicherladeschreibs Sungs discharge 104 with at least one predetermined arrivingladeSullivansgrösse and / orinerladeschreibs selectedungs blunt 106 is comparable. Examples of the at least one storage state of charge size and / or
  • Storage charge state change amount 104 is already indicated above.
  • the at least one storage charge state variable and / or storage charge state change variable 104 may be provided by the sensor 48 to the evaluation device 102, for example.
  • Minimum charge state change variable 106 can be output to the evaluation device 102 by means of an internal memory unit 108. At least if the at least one
  • the storage state of charge amount and / or the storage state of charge change variable 104 are at least one predetermined minimum state of charge state size and / or
  • Minimum charging state change variable 106 is an einausendes evaluation signal 1 10 can be output by the evaluation device 102.
  • the ventilation device 100 also has a control device 1 12.
  • Control device 1 12 is designed to output at least one control signal 1 14 to at least one inlet valve 28 and at least one outlet valve 42 so that the at least one inlet valve 28 and the at least one outlet valve 42 can be controlled in their open state are.
  • the at least one control signal 1 14 may be, for example, an analog or a pulsed current signal.
  • the venting device 100 may in particular be designed to carry out the above-described method steps of the method for venting the accumulator charging pump 10. A new description of these method steps is omitted here.
  • the return line 36 may be formed with a comparatively long length and / or with a relatively small pipe diameter. It is noted, however, that the here described
  • Characteristics of the return line 36 are merely optional.

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

Abstract

L'invention concerne un procédé pour purger une pompe de charge (10) d'un accumulateur, présentant les étapes suivantes: ouverture d'au moins une soupape d'entrée (28), via laquelle un accumulateur (14) de liquide pouvant être rempli au moyen de la pompe de charge (10) d'un accumulateur est relié à un volume de remplissage (22) pouvant être rempli par l'accumulateur (14) de liquide ; et ouverture d'au moins une soupape de sortie (42), via laquelle le volume de remplissage (22) est relié à un coté aspiration de la pompe de charge (10) de l'accumulateur. L'invention concerne également un dispositif de purge pour une pompe de charge (10) d'un accumulateur (14) de liquide.
EP12780465.6A 2011-12-16 2012-10-16 Procédé pour purger une pompe de charge d'un accumulateur et dispositif de purge pour une pompe de charge d'un accumulateur de liquide Withdrawn EP2790984A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011088803A DE102011088803A1 (de) 2011-12-16 2011-12-16 Verfahren zum Entlüften einer Speicherladepumpe und Entlüftungsvorrichtung für eine Speicherladepumpe eines Flüssigkeitsspeichers
PCT/EP2012/070449 WO2013087258A1 (fr) 2011-12-16 2012-10-16 Procédé pour purger une pompe de charge d'un accumulateur et dispositif de purge pour une pompe de charge d'un accumulateur de liquide

Publications (1)

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EP2790984A1 true EP2790984A1 (fr) 2014-10-22

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EP12780465.6A Withdrawn EP2790984A1 (fr) 2011-12-16 2012-10-16 Procédé pour purger une pompe de charge d'un accumulateur et dispositif de purge pour une pompe de charge d'un accumulateur de liquide

Country Status (4)

Country Link
EP (1) EP2790984A1 (fr)
JP (1) JP5863989B2 (fr)
DE (1) DE102011088803A1 (fr)
WO (1) WO2013087258A1 (fr)

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FR3013657B1 (fr) * 2013-11-22 2015-12-25 Bosch Gmbh Robert Systeme de freinage assiste a servofrein hydraulique
DE102015215523A1 (de) 2015-08-14 2017-02-16 Robert Bosch Gmbh Druckmittelversorgungseinheit zur Versorgung eines Verbrauchers mit Druckmittel unter einem einstellbaren Versorgungsdruck
US11332108B2 (en) 2017-11-09 2022-05-17 Robert Bosch Gmbh Vehicle brake system for self-contained circuit filling and method of operating
EP4222031B1 (fr) * 2020-10-02 2024-06-12 C.R.G. S.r.l. Pompe de frein pour véhicules, notamment du type go-kart ou similaires

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JP4440462B2 (ja) * 1998-02-10 2010-03-24 コンティネンタル・テーベス・アクチエンゲゼルシヤフト・ウント・コンパニー・オッフェネ・ハンデルスゲゼルシヤフト 電子制御可能なブレーキ操作装置
DE19935371B4 (de) 1999-07-29 2015-02-05 Robert Bosch Gmbh Verfahren und Vorrichtung zur Ansteuerung von Komponenten in einem Fahrzeug
JP2004513841A (ja) * 2000-11-23 2004-05-13 コンティネンタル・テーベス・アクチエンゲゼルシヤフト・ウント・コンパニー・オッフェネ・ハンデルスゲゼルシヤフト 電子制御可能なブレーキ操作装置の運転方法と電子制御可能なブレーキ操作装置
DE10138125A1 (de) * 2001-08-03 2003-02-13 Bosch Gmbh Robert Verfahren zur Entgasung einer hydraulischen Fahrzeugbremsanlage
DE10235288B4 (de) * 2001-10-04 2015-03-05 Continental Teves Ag & Co. Ohg Elektrohydraulische Bremsanlage für Kraftfahrzeuge und Verfahren zu deren Spülen
DE10215392B4 (de) 2001-10-05 2014-12-18 Robert Bosch Gmbh Verfahren zur Ansteuerung einer Speicherladepumpe in einer elektrohydraulischen Bremsanlage eines Fahrzeugs und elektrohydraulische Bremsanlage
BRPI0613126A2 (pt) * 2005-06-30 2012-12-04 Kelsey Hayes Co cilindro mestre, sistema de frenagem para aplicar fluido de freio hidráulico pressurizado
DE102008044002A1 (de) * 2008-11-24 2010-05-27 Robert Bosch Gmbh Bremssystem für ein Kraftfahrzeug sowie Kraftfahrzeug

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Also Published As

Publication number Publication date
JP5863989B2 (ja) 2016-02-17
JP2015505770A (ja) 2015-02-26
WO2013087258A1 (fr) 2013-06-20
DE102011088803A1 (de) 2013-06-20

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