CN102729970A - Brake pressure amplifying device for vehicle brake system and method for making the brake pressure amplifying device work - Google Patents
Brake pressure amplifying device for vehicle brake system and method for making the brake pressure amplifying device work Download PDFInfo
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- CN102729970A CN102729970A CN2012101691703A CN201210169170A CN102729970A CN 102729970 A CN102729970 A CN 102729970A CN 2012101691703 A CN2012101691703 A CN 2012101691703A CN 201210169170 A CN201210169170 A CN 201210169170A CN 102729970 A CN102729970 A CN 102729970A
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- 239000007788 liquid Substances 0.000 claims abstract description 59
- 230000007246 mechanism Effects 0.000 claims abstract description 43
- 230000008520 organization Effects 0.000 claims description 21
- 238000013461 design Methods 0.000 claims description 14
- 230000004913 activation Effects 0.000 claims description 10
- 230000033228 biological regulation Effects 0.000 claims description 10
- 238000012546 transfer Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 6
- 230000008929 regeneration Effects 0.000 claims description 6
- 238000011069 regeneration method Methods 0.000 claims description 6
- 238000010248 power generation Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000009347 mechanical transmission Effects 0.000 claims description 3
- 230000003321 amplification Effects 0.000 description 9
- 238000003199 nucleic acid amplification method Methods 0.000 description 9
- 230000000630 rising effect Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
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- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 238000010010 raising Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 210000000635 valve cell Anatomy 0.000 description 1
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Classifications
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- 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
- B60T8/44—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 co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device, i.e. open systems
- B60T8/447—Reducing the boost of the power-assist booster means to reduce brake pressure
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- 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
- B60T13/12—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 the fluid being liquid
- B60T13/14—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 the fluid being liquid using accumulators or reservoirs fed by pumps
- B60T13/142—Systems with master cylinder
- B60T13/145—Master cylinder integrated or hydraulically coupled with booster
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- 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
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Regulating Braking Force (AREA)
- Braking Systems And Boosters (AREA)
Abstract
The invention relates to a brake pressure amplifying device (10) for a vehicle brake system, and the brake pressure amplifying device comprises: an input piston (16) adjustably disposed between an input chamber (18) of the brake pressure amplifying device (10) and a middle volume (20) of the brake pressure amplifying device (10), an output piston (34) adjustably disposed between the middle volume (20) of the brake pressure amplifying device (10) and an output chamber (36), a push rod (44) for transmitting the brake force from the input piston (16) to the output piston (34), and a force applying mechanism for applying brake auxiliary force to the output piston (34), wherein the force applying mechanism is designed to apply the brake auxiliary force as a mechanical force to the push rod (44) contacted by the force applying mechanism, and/or a first brake liquid volume can be transferred between at least a partial volume (48, 50) of the middle volume (20) and an external accumulator (45). Additionally, the invention also relates to a method for making the brake pressure amplifying device (10) for the vehicle brake system work.
Description
Technical field
The present invention relates to a kind of brake-pressure multiplying arrangement of motor vehicle braking system.In addition, the present invention relates to a kind of method that makes the brake-pressure multiplying arrangement work of motor vehicle braking system.
Background technology
DE 103 16 750A1 have described a kind of hydraulic vehicle brake device with master brake cylinder and hydraulic amplifier.Master brake cylinder under normal circumstances should can be used as (brake pedal) emulator.Hydraulic amplifier has the input cavity with input piston on the external pressure source of being connected, and can utilize the high pressure that is delivered to the external pressure source in the input cavity to adjust input piston.Can the power of external pressure source be passed to output piston through the push rod that extends in the intermediate volume between input piston and output piston.Output piston limits two output cavities with another piston that can adjust; Respectively a brake circuit so is connected on these output cavities, thereby can utilizes the power adjustment output piston of external pressure source to make the brake-pressure rise in the wheel brake caliper of brake circuit.If external pressure source is malfunctioning, then also should open master brake cylinder and be connected with hydraulic pressure between the input cavity, can connect through this hydraulic pressure and give input piston the brake-force transmission of chaufeur.
Summary of the invention
The present invention provides a kind of brake-pressure multiplying arrangement with motor vehicle braking system of the said characteristic of claim 1, and a kind of method that makes the brake-pressure multiplying arrangement work of the motor vehicle braking system with the said characteristic of claim 14.
Adopt the present invention, except the braking auxiliary force that can utilize force application mechanism to apply, the braking force that can also utilize the vehicle driver to be applied in the master brake cylinder are adjusted required brake-pressure at least one wheel brake caliper.Can reduce the braking auxiliary force that force application mechanism provides by this way, thus compared with prior art can saving in energy.Adopt the less force application mechanism of usefulness just can realize enough big braking auxiliary force simultaneously, therefore can reduce the cost and/or the desired structure space of force application mechanism.
Through being equipped with described brake-pressure multiplying arrangement to vehicle or using method of the present invention, can save traditional brake booster, for example vacuum brake booster.The present invention is the firm and durable of this type brake booster and cheap optional replacement scheme.Especially need on vehicle, not design the vacuum feeding mechanism.
The so-called braking auxiliary force that can utilize force application mechanism to apply refers to and can apply power (towards the direction of utilizing the transferable chaufeur braking force of push rod) that plays the braking amplification and/or the power that can on the direction opposite with transferable chaufeur braking force, apply.Especially can select to apply the braking auxiliary force that plays the braking force amplification, perhaps can be on the direction opposite with the chaufeur braking force that can pass on the brake activation auxiliary force.
Preferably can braking force be passed to output piston with the braking auxiliary force.So just can utilize chaufeur to be applied to the braking force in the master brake cylinder, thereby reduce the braking auxiliary force that force application mechanism provides.Be equipped with emulator needn't in this case in addition the brake system of being furnished with the brake-pressure multiplying arrangement.
For example can comprise can be by motor-driven mechanical transmission mechanism for force application mechanism, and this transmission device especially can comprise tooth bar and/or motor-driven gear, and said gear can roll along the tooth bar on the push rod.So just can utilize this force application mechanism with low cost that the braking auxiliary force is provided, as long as, in contrast, do not need the vacuum feeding mechanism to its supply electric energy.
In a kind of useful embodiment; The brake-pressure multiplying arrangement comprises partition; This partition is divided into intermediate volume first intermediate cavity that is arranged on the input piston and is arranged in second intermediate cavity on the output piston, and stretch out in the hole that push rod passes in the partition, and surrounded by seal ring.Therefore need only the volume of two intermediate cavity of simple control, just can mobile putter.
In a kind of embodiment with low cost, the brake-pressure multiplying arrangement comprises at least one valve system, can be through this valve system with first intermediate cavity and/or second intermediate cavity and braking liquid storage tank hydraulic communication.So just can be with the volume of two intermediate cavity of the reliable control of plain mode.
Preferably, force application mechanism is suitable to comprise the braking liquid organization of supply, designs this braking liquid organization of supply and is used for the first braking liquid volume is pressed into first intermediate cavity as the partial volume of intermediate volume and/or is pressed in second intermediate cavity with one.Except braking force, can also the braking auxiliary force be passed to output piston with braking force by this way, chaufeur can not awared the braking that applies in the master brake cylinder.Can when the brake activation operating element, guarantee (standard compliant) manipulation sense that chaufeur is favourable like this.
In a kind of embodiment of being convenient to carry out; The brake-pressure multiplying arrangement comprises that at least one change-over valve is as at least one valve system; And/or comprise a valve system with change-over valve function, can select supply side hydraulic communication through said change-over valve with first intermediate cavity of being attached troops to a unit or second intermediate cavity and braking liquid storage tank or braking liquid organization of supply.Also can as other valve cell of valve system the function of change-over valve be provided through what function class was similar to change-over valve.So just can guarantee, select at least one intermediate cavity is connected to the supply side of braking liquid storage tank or braking liquid organization of supply with mode with low cost and that the desired structure space is very little.
The braking liquid organization of supply can select to comprise the pressure accumulator that can fill from braking liquid storage tank (external pressure batteries).The braking liquid organization of supply can comprise pump machanism equally, can utilize this pump machanism to use as the first braking liquid volume in the braking liquid storage tank of external pressure batteries.Can use pump machanism under the situation of pressure accumulator being furnished with or not having.So just can realize the embodiment of braking liquid organization of supply with low cost.
In a kind of useful improvement embodiment; The brake-pressure multiplying arrangement comprises control setup; Design this control setup so that receiving sensor was provided about the manipulated variable of brake activation operating element and/or by automatic control device (autobrake moment request automatic control device; Automatic speed control cruise control for example) the braking regulation that is provided; Under the situation of considering manipulated variable of being received at least and/or the braking of receiving regulation, confirm set amount, and under the situation of considering determined set amount, control signal corresponding is exported to force application mechanism about the braking auxiliary force.So can the braking auxiliary force in order to brake activation operating element, for example brake pedal be provided according to can predefined favourable characteristic curve.
Replenish ground, control setup can also be used to receiving the regeneration amount relevant with the mechanism of power generation kinetic moment of at least one wheel that imposes on vehicle in addition, and can under the situation of additional consideration regeneration amount, confirm set amount.So just can cover up (verblendbar) mechanism of power generation kinetic moment, can not depart from the setting deceleration/decel of the vehicle of (chaufeur or automatic control device) setting.
In a kind of useful embodiment, the brake-pressure multiplying arrangement also comprises the liquid transfer device of the second braking liquid volume that can between output cavity and external pressure batteries (braking liquid storage tank), shift, and can guarantee to be convenient to carry out brake-pressure regulation like this.This embodiment is melted into all over the body with the brake-pressure limitation function through the brake-pressure amplification that the adjustable brake-pressure multiplying arrangement between master brake cylinder and the wheel brake caliper will for example can be used for antiblock device.Especially can the brake-pressure multiplying arrangement be designed to can be used to select to produce the adjustable unit that brake-pressure rise or brake-pressure reduce function.A plurality of unit that are used for brake-pressure amplification and antiblock device that are separated from each other structure so just needn't be installed on brake system.Adopt the present invention can make adjusting (ABS mode of operation) and braking force amplification in the braking procedure can not conflict each other, so-called conflict each other refers to brake booster and amplifies the pressure reduction effect that brake-pressure counteracting control system (for example ABS system) is produced.Therefore can not apply yet and offset the energy that braking force amplifies the ABS system.Therefore adopt the present invention can reduce specification requirement and assembly cost.Vacuum be can not adopt in addition and only adjusting and braking force amplification braked through the mode that pure electric energy is changed into the hydraulic pressure ability.
Even for the motor vehicle braking system of being furnished with corresponding brake-pressure multiplying arrangement, also can guarantee the advantage described in the above paragraph.
Equally also can utilize a kind of correlation method of the brake-pressure multiplying arrangement work of brake system that makes to realize above-mentioned advantage.
In a kind of useful improvement embodiment of this method, carry out brake-pressure regulation through additionally between output cavity that limits output piston and external pressure batteries, shifting the second braking liquid volume.Regulate and the braking force amplification owing to can avoid offsetting (for example for the ABS operation), but therefore can realize safety requirements and reliability requirement with minimum assembly cost.Needing no vacuum can be carried out the braking force amplification and braking is regulated, and only need consume in braking procedure through using the reproducible electric energy of electrical generator.Saved specification requirement simultaneously, thereby can reduce the structure space and the weight of these assemblies assembly.
Description of drawings
Below will be according to the explained other features and advantages of the present invention, accompanying drawing Fig.1A～1D is depicted as the scheme drawing of a kind of embodiment of brake-pressure multiplying arrangement.
The specific embodiment
Accompanying drawing 1A～1D is depicted as the scheme drawing of a kind of embodiment of brake-pressure multiplying arrangement.
Can the brake-pressure multiplying arrangement that accompanying drawing 1A～1D schematically illustrates be used for the vehicle braked system.The vehicle of being furnished with the brake-pressure multiplying arrangement can be a kind of power actuated vehicle, for example automobile or motor bike.
Brake system also comprises a master brake cylinder 12 and at least one wheel brake caliper 14 except comprising at least one brake-pressure multiplying arrangement 10.In accompanying drawing 1A～1D, only drawn a braking force multiplying arrangement 10 and a wheel brake caliper 14, but it is pointed out that brake system is not limited only to the brake-pressure multiplying arrangement 10 and wheel brake caliper 14 of a quantification.For example can a plurality of wheel brake calipers 14 be arranged in the outgoing side of brake-pressure multiplying arrangement 10.Brake system especially can be used for its whole wheel brake calipers 14 with a central brake-pressure multiplying arrangement 10.As replacement scheme, distribute a brake-pressure multiplying arrangement also can for the wheel brake caliper 14 of each wheel.
Brake-pressure multiplying arrangement 10 has an adjustable ground and is arranged in the input piston 16 between input cavity 18 and the intermediate volume 20.Can input cavity 18 so hydraulically be communicated to master brake cylinder 12, can be to input piston 16 thereby raise with brake-force transmission by means of the pressure in the master brake cylinder 12.Extend between the internal volume 22 of input cavity 18 and master brake cylinder 12 of brake-pressure multiplying arrangement 10 that the pipeline 24 that does not have valve or be furnished with valve especially can be in being installed on brake system.Can select pressure sensor 26 is connected on the pipeline 24.
So-called braking force refers at least one adjustable piston 28 that can be used for master brake cylinder 12 and can move to the power in the internal volume 22 at least in part.For example braking force can be that chaufeur is applied to the power in the master brake cylinder 12.On adjustable piston 28 of master brake cylinder 12, can connect/connect brake operation element 30, for example a brake pedal.But be not limited only to the brake-pressure multiplying arrangement is used to equip brake system with brake operation element 30 or is used for a kind of definite embodiment of brake operation element 30, brake-pressure multiplying arrangement 10 equally also can with master brake cylinder 12 (for example tandem brake master cylinder) mutual action of any kind.So-called master brake cylinder 12 also can refer to the pressurized cylinder of simplicity of design.
Can be chosen on adjustable piston 28 and/or the brake operation element 30 of master brake cylinder 12 and arrange that at least one is used for measuring the sensor 32 about the manipulated variable of operation brake operation element 30.Sensor 32 can be for example braking force sensor, brake-pressure sensor and/or braking distance sensor, for example rod stroke sensor.But brake system is not limited only to be equipped with the sensor 32 that sensor 32 or is confirmed type.
Brake-pressure multiplying arrangement 10 also can have an output piston 34 that adjustable ground is arranged between intermediate volume 20 and output cavity 36.Can be at least one wheel brake caliper 14 with output cavity 36 such hydraulic communication, thus can be by means of the brake-pressure in the mobile change output cavity 36 of output piston 34 and at least one wheel brake caliper 14.At least one valveless and/or the pipeline 38 of being furnished with valve (for example wheel gets into valve and/or wheel discharge-service valve) can extend between output cavity 36 and wheel brake caliper 14.Also can select pressure sensor 40 and output cavity 36 hydraulic communication.Another wheel brake caliper 14 is continuous with another the parallel brake-pressure multiplying arrangement 10 with master brake cylinder 12 at least can to connect 42 through hydraulic pressure in addition.
Can braking force be passed to output piston 34 like this from piston 16 through the push rod 44 of brake-pressure multiplying arrangement 10, thereby can utilize braking force to regulate output piston 34 at least.Piston 16 and 34 and push rod 44 advantageously interconnect with force closure or shape locking mode.Input piston 16, output piston 34 and/or push rod 44 preferably adopt whole (single-piece) project organization.
The brake-pressure multiplying arrangement can also have force application mechanism in addition, can utilize this force application mechanism will brake auxiliary force and impose on output piston 34 like this, thereby can utilize the braking auxiliary force to regulate output piston 34 at least.Like this design force application mechanism, thus can the auxiliary force as mechanical force be imposed on the push rod 44 that force application mechanism contacts, and/or can be at the transfer first braking liquid volume between at least a portion volume of intermediate volume 20 and the external pressure batteries 45.So just can guarantee braking force is passed to the advantage of output piston 34 with the braking auxiliary force.Cheaper with cost with regard to guaranteeing like this, lighter and handier and desired structure space mode still less designs force application mechanism.Also can reduce the energy consumption of force application mechanism by this way simultaneously.
In embodiment shown in the drawings, partition 46 is divided into intermediate volume 20 and is arranged in first intermediate cavity 48 on the input piston 16 and is arranged in second intermediate cavity 50 on the output piston 34.It is pointed out that only brake-pressure multiplying arrangement 10 is not limited only to intermediate volume 20 is divided into two intermediate cavity 48 and 50.Stretch out in the hole that push rod 44 preferably passes in the next door 46.(not drawing among the figure) seal ring that push rod 44 can be selected to be disposed in the hole surrounds.In the described here embodiment, input piston 16 is supported on the spring 52 that is arranged in first intermediate cavity 48.As substituting or additional project, output piston 34 also can be supported on the spring that is arranged in second intermediate cavity 50.
Can in same shell 54, form chamber 18,36,48 and 50, thereby can brake-pressure multiplying arrangement 10 be designed to compact unit.Help like this brake-pressure multiplying arrangement 10 is installed in the brake system.
In a kind of useful embodiment, also can in a hole of integrated brake system, form chamber 18,36,48 and 50, the required structure space of integrated brake system of being furnished with brake-pressure multiplying arrangement 10 like this will be smaller.
Brake-pressure multiplying arrangement 10 more preferably comprises at least one valve system 56 and 58; First intermediate cavity 48 and/or second intermediate cavity 50 can be through said valve system and external pressure batteries 45 hydraulic communication; Said external pressure batteries can have lower internal pressure, especially identical with barometric pressure internal pressure.For example, just can allow the volume of change first intermediate cavity 48 through utilizing the open external pressure batteries 45 of first valve system 56 to be connected with hydraulic pressure between first intermediate cavity 48.Correspondingly can utilize open second intermediate cavity 50 of second valve system 58 to be connected, thereby can select increase perhaps reduce second intermediate volume 50 according to braking force and/or braking auxiliary force with hydraulic pressure between the external pressure batteries 45.Equally also can activate the volume that at least one valve system 56 or 58 stops to change at least one intermediate cavity in intermediate cavity 48 and 50 through control.Valve system 56 and 58 preferably is under powering-off state the intermediate cavity of being attached troops to a unit 48 or 50 and the state of external pressure batteries 45 hydraulic communication.In a kind of simple embodiment, the braking liquid storage tank is used as external pressure batteries 45.
According to embodiment shown in the drawings, force application mechanism comprises that one is used for the first braking liquid volume is pressed into the braking liquid organization of supply in first intermediate cavity 48 or second intermediate cavity 50.More preferably, design the braking liquid organization of supply like this, thereby can select the first braking liquid volume is transferred in first intermediate cavity 48 or second intermediate cavity 50.Therefore just can utilize the braking liquid organization of supply to select to increase first intermediate cavity 48 or second intermediate cavity 50, wherein can correspondingly reduce another intermediate cavity in two intermediate cavity 48 and 50.So can produce the braking auxiliary force that can be used as pressure 60 raisings, can select therefrom between volume 20 will brake auxiliary force and impose on input piston 16 or output piston 34.Can utilize the suitably such adjusting output piston 34 of braking auxiliary force that points to output piston 34 from intermediate volume 20, thus the brake-pressure in rising output cavity 36 and at least one wheel braking cylinder 14.On the contrary, the braking auxiliary force that points to input piston 16 from intermediate volume 20 then can make the intermediate cavity 48 of winning increase, and correspondingly reduces second intermediate cavity 50 simultaneously, increases the volume of output cavity 36 thus.So just can reduce the brake-pressure output cavity 36 and at least one wheel brake caliper 14 through the braking auxiliary force that points to input piston 16 from intermediate volume 20.This especially can limit the pressure at least one wheel brake caliper 14, offsets the internal pressure that raises in the master brake cylinder 12.For example can carry out ABS by this way regulates.Can utilize this mode to cover up (verblendet) mechanism of power generation kinetic moment equally, below also will be described in detail this.
Brake-pressure multiplying arrangement 10 shown in the drawings comprises that first pump machanism 62 (for example at least one pump) as the assembly of braking liquid organization of supply, can utilize said first pump machanism that the first braking liquid volume pump is delivered to external pressure batteries 45.Replenish ground, said braking liquid organization of supply also can have a pressure accumulator that for example can utilize first pump machanism 62 to fill from external pressure batteries 45.In the embodiment shown, first pump machanism 62 links to each other with external pressure batteries 45 through induction pipe 64.Can select pressure accumulator chamber 68 is connected on the feed pipe 66 that extends from the supply side of first pump machanism 62.Can draw the exhaust tube 70 of a band blowdown valve 72 from feed pipe 66 in addition, thereby when overvoltage occurring in the feed pipe 66, can braking liquid be moved in the external pressure batteries 45 through exhaust tube 70.But brake system is not limited only to be equipped with required assembly here.
Brake system shown in the drawings advantageously comprises at least one change-over valve as valve system 46 and 48, the intermediate cavity 48 that can select to attach troops to a unit through this change-over valve or 50 and the supply side hydraulic communication of the external pressure batteries 45 or first pump machanism 62.Therefore; Can be so each other transfer valve mechanism 56 and 58 accordingly; Thereby can fill through 74 pairs first intermediate cavity 48 of pipeline of leading to first intermediate cavity 48 from first valve system 56, the braking liquid of second intermediate cavity 50 then flows into the external pressure batteries 45 through the pipeline 76 that leads to second intermediate cavity 50 from second valve system 58.Can produce the braking auxiliary force that points to input piston 16 from intermediate volume 20 like this.Also can be like this corresponding activated valve mechanism 56 and 58, thus 62 pairs second intermediate cavity of first pump machanism capable of using fill, and braking liquid then flows out from first intermediate cavity 48.Will produce the braking auxiliary force that points to output piston 34 from intermediate volume 20 like this.
The valve system 56 that is designed to the change-over valve form can link to each other with fluid reservoir pipeline 82 through pipeline 78 or 80 with 58 separately, and the internal volume 22 of master brake cylinder 12 also is connected on this fluid reservoir pipeline.But this connection mode of the assembly of brake system 12,56 and 58 is merely reference example.
It is pointed out that brake-pressure multiplying arrangement 10 is not limited only to force application mechanism is designed to the braking liquid organization of supply.As substituting or additional project, also can adopt and mechanically construct force application mechanism.For example force application mechanism can comprise that one can especially be utilized tooth bar and/or gear motor-driven, that can roll along the tooth bar of structure on push rod 44 by motor-driven mechanical transmission mechanism.In this case, force application mechanism contacts with push rod 44.
Improvement embodiment according to the brake-pressure multiplying arrangement 10 shown in accompanying drawing 1A～1D; Brake system also comprises the braking liquid transfer device that is made up of assembly 84～88, can between output cavity 36 and external pressure batteries 45, shift the second braking liquid volume by means of this braking liquid transfer device.For example can utilize second pump machanism 84 (for example at least one pump) that the second braking liquid volume is pumped into the output cavity 36 from external pressure batteries 45.Second pump machanism 84 can link to each other with output cavity 36 through feed pipe path 90 for this reason.Discharge-service valve 86 through pipeline 92 links to each other with feed pipe path 90 is controlled the braking liquid that flows to external pressure batteries 45 from output cavity 36.Second pump machanism 84 can link to each other with fluid reservoir pipeline 82 through pipeline 94 or 96 with discharge-service valve 86 separately.
Preferably first pump machanism 62 and second pump machanism 84 are arranged on the same axle 98 of motor 100.In order when utilizing motor 100 to drive first pump machanism 62, to prevent can an inlet valve 88 to be arranged in unexpected second pump machanism 84 that drives from fluid reservoir pipeline 82 and to lead to the pipeline 94 of second pump machanism 84.But the embodiment of the braking liquid transfer device described in this paragraph is merely reference example.
Can be with first pump machanism 62 as main pump, and with second pump machanism 84 as complementary pump.Can the adjusting pump of first pump machanism 62 as adjustable assembly 16,34 and 44 be regulated pump with second pump machanism 84 as wheel.In other words, can utilize the motion of first pump machanism, the 62 adjustable assemblies 16,34 of control and 44, main purpose is to amplify braking force and restriction brake-pressure; Can utilize the volume motion between second pump machanism 84 and discharge-service valve 86 control output cavities 36 and the external pressure batteries 45, main purpose is that wheel is regulated.
In addition also can with wheel the exclusive entrance pressure valve discharge side (installation site shown in the drawings) that is arranged in pump machanism 84 substitute inlet valve 88.Thereby in this case, also can use first pump machanism 62 to substitute and be used for second pump machanism 84 that wheel is regulated.Equally also can a limiting valve be used in being connected of pressure accumulator chamber 68 and first pump machanism 62, even so that when 68 emptyings of pressure accumulator chamber, also can prevent main filling and intermediate cavity 48 or 50 relative pressure accumulator chambers 68 through the mode of closing limiting valve.
Brake system shown in accompanying drawing 1A～1D utilizes electric energy as being used for unique energy that braking force amplifies and regulates.Especially can use motor 100 as unique energy converter.Because electric energy can regenerate, therefore can produce easily and be used to regulate the power consumption that amplifies with braking force.
Except the structure space and weight that reduce brake system, equally also can guarantee the system design of brake system firm and durable and cheap manufacturing cost.Because according to brake system shown in the drawings, even receive when hindering when the power supply of brake system, therefore chaufeur can also can guarantee higher safety rate through master brake cylinder 12 directly at least one wheel brake caliper 14 brake activation power.Can adjust favourable (standard compliant) treadle effort and pedal stroke characteristic curve for brake system in addition.
Accompanying drawing 1B～1D is depicted as some executable mode of operations of brake system:
Accompanying drawing 1B shows brake system, although chaufeur does not have brake activation operating element 30, also can preestablish through (speed) automatic control device of vehicle self and is not equal to zero total braking force square.When the pressure p 0 that has external pressure batteries 45 in the internal volume 22 of master brake cylinder 12, input cavity 18 and first intermediate cavity 48, preferred atmosphere pressure, just can utilize the pressure p 1 in first pump machanism, 62 risings, second intermediate cavity 50.Pressure p 2 in the output cavity 36 also can be through the mobile and corresponding rising of adjustable assembly 16,34 and 44.Can utilize the pressure p 2 in assembly 84～88 meticulous adjusting output cavities 36 of liquid transfer device.
Brake system when accompanying drawing 1C is depicted as through pilot control braking force input element 30.Through the internal volume 22 of brake activation force input element 30 rising master brake cylinders 12 and the pressure p 3 in the input cavity 18.Just can guarantee that by corresponding switching/actuating first valve system 56 pressure p 0 in first intermediate cavity 48 equals the pressure p 0 in the external pressure batteries 45.Therefore, can regulate towards 36 pairs of adjustable assemblies 16,34 and 44 of output cavity.Can utilize simultaneously first pump machanism 62 to be amplified through the brake-pressure that the chaufeur braking force applies by chaufeur, method is the pressure p 4 in rising second intermediate cavity 50.Will make the pressure p 5 in output cavity 36 and at least one wheel brake caliper 14 raise like this.
Accompanying drawing 1D is illustrated in the usability of brake-pressure multiplying arrangement when offsetting chaufeur to the restriction brake-pressure of the manipulation of brake operation element 30.When having pressure p 3 in the internal volume of master brake cylinder 12 22 and the input cavity 18, can utilize first pump machanism 62 in first intermediate cavity 48, to set up back-pressure p6.Simultaneously can green phase should activate second valve system 58 pressure p 7 in second intermediate cavity 50 is reduced to a value less than pressure p 4.As additional project, can also further reduce the pressure p 8 in the output cavity 36 through discharge-service valve 86.The pressure p 8 that for example can reduce in the output cavity is carried out the ABS function.
Can preferably so design the size of chamber 18,36,48 and 50, thereby can utilize adjustable assembly 16,34 and 44 to offset bigger braking force or the bigger rate of volume flow of realization.Especially can so regulate the pressure in intermediate cavity 48 and 50, although make adjustable assembly 16,34 and 44 handled brake operation element 30 also " maintenance " in a position.So just can in the position at adjustable assembly 16,34 and 44 places, bigger volume be pressed at least one brake clamp 14, perhaps therefrom outwards sucking-off.In contrast to this, can so mate the size of output cavity 36, thereby but the use exclusively of output cavity wheel institute especially can be used for the ABS function.
Brake system guarantees hydraulic pump system is used for wheel adjusting and braking force amplification simultaneously.Can use said pumping system as the central pumping system of all brake circuits, as the special-purpose pumping system of brake circuit and/or as wheel exclusive pumping system.Also can the mechanical control of adjustable assembly 16,34 and 44 be regulated with the wheel of hydraulic pressure and separate.
Regulate owing to can realize independent wheel pressure very simply, therefore brake system shown in the drawings advantageously is suitable for regenerative electric energy in braking procedure.In a kind of improvement embodiment; Brake-pressure multiplying arrangement 10 perhaps is equipped with the brake system of this brake-pressure multiplying arrangement can comprise control setup; Design said control setup; Make that but said control setup receiving sensor 33 provides about the manipulated variable of brake activation operating element 30 and/or by braking regulation that automatic control device provided; Confirm that under the situation of manipulated variable of considering to be received at least and/or the braking regulation received set amount brakes auxiliary force in other words, and under the situation of the set amount of considering to confirm, control signal corresponding exported at least one assembly in assembly 56,58,62,68,84,86 and 88.Also can receive the regeneration amount relevant that is provided in addition with the mechanism of power generation kinetic moment of at least one wheel that imposes on vehicle.Can under the situation of additional consideration regeneration amount, confirm set amount in this case.
Shown in brake system in, can compensate the leakage of oil effect easily, therefore the leakage of oil effect on push rod 44/ piston rod for example need not improve tolerance.
In a kind of additional project, can also (not drawing among the figure) valve be arranged between intermediate cavity 48 and 50.Even the electric current supply of brake system is hindered, can also utilize the chaufeur braking force in output cavity 36, to realize boosting through this preferred normally open valve.If require to change pressure, can also be through the equilibrium of pressure between this valve control intermediate cavity 48 and 50.So only after equilibrium of pressure, just can need to use the braking liquid organization of supply, thereby can reduce the energy consumption of braking liquid organization of supply.
The method step of the useful method of the brake-pressure multiplying arrangement work that makes brake system has been described in above paragraph.Therefore no longer redescribe these method steps here.
Claims (15)
1. the brake-pressure multiplying arrangement (10) of motor vehicle braking system comprises
The input piston (16) that adjustable ground is arranged between the intermediate volume (20) of the input cavity (18) of brake-pressure multiplying arrangement (10) and brake-pressure multiplying arrangement (10); Wherein can with the such hydraulic communication of input cavity (18) to master brake cylinder (12), make and to give input piston (16) with brake-force transmission by the pressure that improves in the master brake cylinder (12);
The output piston (34) that adjustable ground is arranged between the intermediate volume (20) of brake-pressure multiplying arrangement (10) and output cavity (36); Wherein can make to change the brake-pressure in output cavity (36) and at least one wheel brake caliper (14) with the such hydraulic communication of output cavity (36) at least one wheel brake caliper (14) by means of regulating output piston (34);
Push rod (44) can pass to output piston (34) with braking force from input piston (16) like this through this push rod, thereby can utilize brake-power regulation output piston (34) at least;
Force application mechanism utilizes this force application mechanism can the braking auxiliary force be imposed on output piston (34) like this, thereby can utilize the braking auxiliary force to regulate output piston (34) at least;
It is characterized in that,
Design said force application mechanism like this; Feasible braking auxiliary force as mechanical force imposes on the push rod (44) that is contacted by force application mechanism; And/or can between at least one partial volume (48,50) of intermediate volume (20) and external pressure batteries (45), shift the first braking liquid volume.
2. brake-pressure multiplying arrangement according to claim 1 (10) wherein can pass to output piston (34) with the braking auxiliary force with braking force.
3. brake-pressure multiplying arrangement according to claim 1 and 2 (10), wherein said force application mechanism comprises with motor-driven mechanical transmission mechanism.
4. each described brake-pressure multiplying arrangement (10) in requiring according to aforesaid right; Wherein said brake-pressure multiplying arrangement (10) comprises next door (46); This next door is divided into intermediate volume (20) first intermediate cavity (48) that is arranged on the input piston (16) and is arranged in second intermediate cavity (50) on the output piston (34); Stretch out in the hole that wherein said push rod (44) passes in the next door (46), and surrounded by seal ring.
5. brake-pressure multiplying arrangement according to claim 4 (10); Wherein said brake-pressure multiplying arrangement (10) comprises at least one valve system (56; 58), can first intermediate cavity (48) and/or second intermediate cavity (50) be linked to each other with braking liquid storage tank (45) hydraulic pressure through this valve system.
6. according to claim 4 or 5 described brake-pressure multiplying arrangements (10); Wherein said force application mechanism comprises braking liquid organization of supply (62; 68); Design this braking liquid organization of supply (62,68), to be pressed in first intermediate cavity (48) as the partial volume of intermediate volume (20) the first braking liquid volume and/or to be pressed in second intermediate cavity (50).
7. brake-pressure multiplying arrangement according to claim 6 (10); Wherein said brake-pressure multiplying arrangement comprises that at least one change-over valve is as at least one valve system (56; 58); And/or comprise valve system with change-over valve function, selectively first intermediate cavity (48) of being attached troops to a unit or second intermediate cavity (50) the supply side hydraulic pressure with braking liquid storage tank (45) or braking liquid organization of supply (62,68) is linked to each other through said change-over valve.
8. according to claim 6 or 7 described brake-pressure multiplying arrangements (10), wherein said braking liquid organization of supply (62,68) comprises the pressure accumulator that can fill from the braking liquid storage tank (45) as external pressure batteries (45).
9. according to each described brake-pressure multiplying arrangement (10) in the claim 6～8; Wherein said braking liquid organization of supply (62; 68) comprise pump machanism (62), can utilize this pump machanism from braking liquid storage tank (45), to pump the first braking liquid volume as external pressure batteries (45).
10. each described brake-pressure multiplying arrangement (10) in requiring according to aforesaid right; Wherein said brake-pressure multiplying arrangement (10) comprises control setup; Design this control setup with receiving sensor (32) provided about the manipulated variable of brake activation operating element (30) and/or by braking regulation that automatic control device was provided; Under the situation of considering manipulated variable of being received at least and/or the braking of receiving regulation, confirm set amount, and under the situation of considering determined set amount, control signal corresponding is exported to force application mechanism about the braking auxiliary force.
11. brake-pressure multiplying arrangement according to claim 10 (10); Wherein said control setup is so design additionally; Receive the regeneration amount that is provided relatively with the mechanism of power generation kinetic moment that is used for and impose at least one wheel of vehicle, and can under the situation of additional consideration regeneration amount, confirm set amount.
12. according to each described brake-pressure multiplying arrangement (10) in the aforesaid right requirement; Wherein said brake-pressure multiplying arrangement (10) also comprises liquid transfer device (84; 86; 88), can between output cavity (36) and external pressure batteries (45), shift the second braking liquid volume by this liquid transfer device.
13. be furnished with motor vehicle braking system by each said brake-pressure multiplying arrangement (10) in the aforesaid right requirement.
14. make the method for brake-pressure multiplying arrangement (10) work of motor vehicle braking system; Said brake-pressure multiplying arrangement has intermediate volume (20) and the push rod (44) that it is carried adjustable input piston (16), adjustable output piston (34) of braking force, is limited input piston (16) and output piston (34); Through push rod braking force is passed to output piston (34) like this from input piston (16); Thereby braking force capable of using is at least regulated output piston (34) like this; Thereby change the brake-pressure at least one wheel brake caliper (14), said method comprising the steps of:
To brake auxiliary force and impose on output piston (34) like this, thereby utilize the braking auxiliary force to regulate output piston (34) at least,
It is characterized in that following steps:
To directly impose on push rod (44) as the braking auxiliary force of mechanical force, and/or through mode brake activation auxiliary force at transfer braking liquid volume between at least one partial volume (48,50) of intermediate volume (20) and the external pressure batteries (45).
15. method according to claim 14 is wherein carried out brake-pressure regulation, method is additionally between output piston (36) that is limited output piston (34) and external pressure batteries (45), to shift the second braking liquid volume.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011007095A DE102011007095A1 (en) | 2011-04-11 | 2011-04-11 | Brake pressure booster device for braking system of vehicle, has input piston that is adjustably movable between inlet chamber of brake pressure booster device and intermediate volume of brake pressure booster device |
| DE102011007095.8 | 2011-04-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102729970A true CN102729970A (en) | 2012-10-17 |
| CN102729970B CN102729970B (en) | 2016-03-23 |
Family
ID=46874985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210169170.3A Expired - Fee Related CN102729970B (en) | 2011-04-11 | 2012-04-10 | The brake-pressure multiplying arrangement of motor vehicle braking system and make the method for this brake-pressure multiplying arrangement work |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN102729970B (en) |
| DE (1) | DE102011007095A1 (en) |
| FR (1) | FR2973762B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013219575A1 (en) * | 2012-09-28 | 2014-04-03 | Continental Teves Ag & Co. Ohg | Brake operation system for hydraulic brake system of motorcycle e.g. trike, has control unit that is provided for forced closure of brake circuits for pressurization device spatially arranged on pressure chamber |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3727986A (en) * | 1971-12-22 | 1973-04-17 | Gen Motors Corp | Direct apply brake system |
| CN1125182A (en) * | 1994-10-05 | 1996-06-26 | 罗伯特-博希股份公司 | Brake-pressure modulation device |
| DE19626926A1 (en) * | 1996-07-04 | 1998-01-08 | Teves Gmbh Alfred | Electronic control braking system |
| US6315370B1 (en) * | 1995-10-18 | 2001-11-13 | Itt Manufacturing Enterprises, Inc. | Electronically controllable brake operating system |
| DE10316750A1 (en) * | 2003-04-10 | 2004-10-28 | Continental Teves Ag & Co. Ohg | Hydraulic vehicle brake system |
-
2011
- 2011-04-11 DE DE102011007095A patent/DE102011007095A1/en not_active Withdrawn
-
2012
- 2012-04-10 CN CN201210169170.3A patent/CN102729970B/en not_active Expired - Fee Related
- 2012-04-11 FR FR1253316A patent/FR2973762B1/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3727986A (en) * | 1971-12-22 | 1973-04-17 | Gen Motors Corp | Direct apply brake system |
| CN1125182A (en) * | 1994-10-05 | 1996-06-26 | 罗伯特-博希股份公司 | Brake-pressure modulation device |
| US6315370B1 (en) * | 1995-10-18 | 2001-11-13 | Itt Manufacturing Enterprises, Inc. | Electronically controllable brake operating system |
| DE19626926A1 (en) * | 1996-07-04 | 1998-01-08 | Teves Gmbh Alfred | Electronic control braking system |
| DE10316750A1 (en) * | 2003-04-10 | 2004-10-28 | Continental Teves Ag & Co. Ohg | Hydraulic vehicle brake system |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102011007095A1 (en) | 2012-10-11 |
| FR2973762B1 (en) | 2017-06-23 |
| FR2973762A1 (en) | 2012-10-12 |
| CN102729970B (en) | 2016-03-23 |
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