CN102729970B - The brake-pressure multiplying arrangement of motor vehicle braking system and make the method for this brake-pressure multiplying arrangement work - Google Patents
The brake-pressure multiplying arrangement of motor vehicle braking system and make the method for this brake-pressure multiplying arrangement work Download PDFInfo
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- CN102729970B CN102729970B CN201210169170.3A CN201210169170A CN102729970B CN 102729970 B CN102729970 B CN 102729970B CN 201210169170 A CN201210169170 A CN 201210169170A CN 102729970 B CN102729970 B CN 102729970B
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- 238000000034 method Methods 0.000 title claims abstract description 20
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- 230000008520 organization Effects 0.000 claims description 21
- 230000033228 biological regulation Effects 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 11
- 230000004913 activation Effects 0.000 claims description 7
- 230000008929 regeneration Effects 0.000 claims description 6
- 238000011069 regeneration method Methods 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- 238000010248 power generation Methods 0.000 claims description 5
- 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
- 239000012530 fluid Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
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- 239000013589 supplement Substances 0.000 description 2
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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
Abstract
The present invention relates to a kind of brake-pressure multiplying arrangement (10) of motor vehicle braking system, it has the input piston (16) that adjustable ground is arranged between the input cavity (18) and the intermediate volume (20) of brake-pressure multiplying arrangement (10) of brake-pressure multiplying arrangement (10), the output piston (34) that adjustable ground is arranged between the intermediate volume (20) and output cavity (36) of brake-pressure multiplying arrangement (10), be used for braking force can to pass to from input piston (16) push rod (44) of output piston (34), and can be used to force application mechanism braking auxiliary force being applied to output piston (34), wherein design described force application mechanism, the braking auxiliary force as mechanical force is can be used to be applied to the push rod (44) contacted by force application mechanism, and/or can at least one partial volume (48 of intermediate volume (20), 50) and between external pressure batteries (45) the first braking liquid volume is shifted.In addition the invention still further relates to a kind of method that the brake-pressure multiplying arrangement (10) of motor vehicle braking system is worked.
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 making the brake-pressure multiplying arrangement work of motor vehicle braking system.
Background technology
DE10316750A1 describes a kind of hydraulic vehicle brake device with master brake cylinder and hydraulic amplifier.Master brake cylinder should can be used as (brake pedal) emulator under normal circumstances.Hydraulic amplifier has the input cavity with input piston be connected in external pressure source, and the high pressure of the external pressure source be delivered in input cavity can be utilized to adjust input piston.By the push rod extended in the intermediate volume between input piston and output piston, the power of external pressure source can be passed to output piston.Output piston with another can together with the piston that adjusts limit two output cavities, respectively a brake circuit is so connected on these output cavities, thus can utilizes the power of external pressure source adjustment output piston that the brake-pressure in the wheel brake caliper of brake circuit is raised.If external pressure source is malfunctioning, then also should opens the hydraulic connecting between master brake cylinder and input cavity, by this hydraulic connecting, the braking force of chaufeur can be passed to input piston.
Summary of the invention
The invention provides a kind of brake-pressure multiplying arrangement of motor vehicle braking system, it comprises
The input piston that adjustable ground is arranged between the input cavity and the intermediate volume of brake-pressure multiplying arrangement of brake-pressure multiplying arrangement, wherein can, by such for input cavity hydraulic communication on master brake cylinder, make the pressure by improving in master brake cylinder braking force can be passed to input piston;
The output piston that adjustable ground is arranged between the intermediate volume and output cavity of brake-pressure multiplying arrangement, wherein by such for output cavity hydraulic communication at least one wheel brake caliper, the brake-pressure that can change by means of regulation output piston in output cavity and at least one wheel brake caliper can be made;
Push rod, like this passes to output piston by braking force from input piston by this push rod, thus at least can utilize brake-force control output piston;
Force application mechanism, utilizes this force application mechanism braking auxiliary force can be applied to output piston like this, thus at least can utilize braking auxiliary force regulation output piston; It is characterized in that,
The described force application mechanism of such design, makes the braking auxiliary force as mechanical force be applied to the push rod contacted by force application mechanism, and/or can shift the first braking liquid volume between at least one partial volume and external pressure batteries in intermediate volume.
The present invention also provides a kind of method making the brake-pressure multiplying arrangement work of motor vehicle braking system, described brake-pressure multiplying arrangement has the adjustable input piston to its conveying braking force, adjustable output piston, the intermediate volume limited by input piston and output piston and push rod, by push rod, braking force is passed to output piston like this from input piston, thus at least can utilize the such regulation output piston of braking force, thus the brake-pressure changed at least one wheel brake caliper, said method comprising the steps of:
Braking auxiliary force is applied to output piston like this, thus at least utilizes braking auxiliary force regulation output piston,
It is characterized in that following steps:
Braking auxiliary force as mechanical force is directly applied to push rod, and/or by applying in the mode shifting braking liquid volume between at least one partial volume and external pressure batteries of intermediate volume to brake auxiliary force.
Adopt the present invention, the braking auxiliary force applied except utilizing force application mechanism, the braking force that vehicle driver can also be utilized to be applied in master brake cylinder adjust required brake-pressure at least one wheel brake caliper.The braking auxiliary force that force application mechanism provides can be reduced by this way, compared with prior art can save energy thus.Adopt the less force application mechanism of usefulness just can realize enough large braking auxiliary force simultaneously, therefore can reduce cost and/or the desired structure space of force application mechanism.
By to vehicle be equipped with described in brake-pressure multiplying arrangement or use method of the present invention, traditional brake booster can be saved, such as vacuum brake booster.The present invention is the firm and durable of this kind of brake booster and cheap optional replacement scheme.Especially do not need to design vacuum feeding mechanism on vehicle.
The so-called braking auxiliary force that force application mechanism can be utilized to apply, refers to and can apply the power (direction towards utilizing push rod transferable chaufeur braking force) playing braking amplification and/or the power that can apply on the direction contrary with transferable chaufeur braking force.Especially can select the braking auxiliary force applying to play braking force amplification, or can apply to brake auxiliary force on the direction contrary with the chaufeur braking force that can pass on.
Preferably braking force can be passed to output piston together with braking auxiliary force.Chaufeur so just can be utilized to be applied to braking force in master brake cylinder, thus to reduce the braking auxiliary force that force application mechanism provides.In addition emulator need not be equipped with to the brake system of being furnished with brake-pressure multiplying arrangement in this case.
Such as force application mechanism can comprise can by motor-driven mechanical transmission mechanism, and this transmission device especially can comprise tooth bar and/or motor-driven gear, and described gear can roll along the tooth bar on push rod.This force application mechanism with low cost so just can be utilized to provide braking auxiliary force, as long as to its supply electric energy, in contrast, do not need vacuum feeding mechanism.
In a kind of useful embodiment, brake-pressure multiplying arrangement comprises partition, intermediate volume is divided into the second intermediate cavity being arranged in the first intermediate cavity on input piston and being arranged on output piston by this partition, and push rod stretches out through the hole in partition, and surround by seal ring.As long as the therefore simple volume controlling two intermediate cavity, just can mobile putter.
In a kind of embodiment with low cost, brake-pressure multiplying arrangement comprises at least one valve system, can by this valve system by the first intermediate cavity and/or the second intermediate cavity and braking liquid storage tank hydraulic communication.So just reliably can control the volume of two intermediate cavity in a simple manner decoupled.
Preferably, force application mechanism is suitable for comprising braking liquid organization of supply, designs this braking liquid organization of supply using one for the partial volume of the first braking liquid volume as intermediate volume is pressed in the first intermediate cavity and/or is pressed in the second intermediate cavity.Except braking force, braking auxiliary force can also be passed to output piston together with braking force by this way, chaufeur can not aware the braking applied in master brake cylinder.(standard compliant) manipulation sense that chaufeur is favourable can be ensured like this when brake activation operating element.
Be convenient in the embodiment performed a kind of, brake-pressure multiplying arrangement comprises at least one change-over valve as at least one valve system, and/or comprise the valve system that has change-over valve function, the supply side hydraulic communication can selecting the first attached troops to a unit intermediate cavity or the second intermediate cavity and braking liquid storage tank or braking liquid organization of supply by described change-over valve.Other valve cell as valve system that also can be similar to change-over valve by function class provides the function of change-over valve.So just can ensure, in low cost and that desired structure space is very little mode, to select the supply side at least one intermediate cavity being connected to braking liquid storage tank or braking liquid organization of supply.
Braking liquid organization of supply can be selected to comprise and can carry out from braking liquid storage tank (external pressure batteries) pressure accumulator that fills.Braking liquid organization of supply can comprise pump machanism equally, and this pump machanism can be utilized to be used as the first braking liquid volume in the braking liquid storage tank of external pressure batteries.Can when being furnished with or not having to use pump machanism when pressure accumulator.So just can realize the embodiment of braking liquid organization of supply with low cost.
In a kind of useful improvement embodiment, brake-pressure multiplying arrangement comprises control setup, design the manipulated variable about brake activation operating element that this control setup provides with receiving sensor and/or by automatic controls (autobrake torque request automatic controls, such as speed controls Speed control mechanism automatically) braking that provides regulation, the set amount about braking auxiliary force is determined when considering at least received manipulated variable and/or the braking received specifies, and when considering determined set amount, corresponding control signal is exported to force application mechanism.So just according to the favourable characteristic curve that can preset, the braking auxiliary force in order to brake activation operating element, such as brake pedal can be provided.
Addedly, control setup can also be used to receive the amount of regeneration relevant to the mechanism of power generation kinetic moment of at least one wheel being applied to vehicle in addition, and can determine set amount when additional consideration amount of regeneration.So just can cover up (verblendbar) mechanism of power generation kinetic moment, the setting deceleration/decel of the vehicle that (chaufeur or automatic controls) sets can not be departed from.
In a kind of useful embodiment, brake-pressure multiplying arrangement also comprises the liquid transferring machine structure of the second braking liquid volume that can shift between output cavity and external pressure batteries (braking liquid storage tank), can ensure that being convenient to perform brake-pressure regulates like this.The brake-pressure amplification that such as can be used for antiblock device is melted into all over the body with brake-pressure limitation function by the modulated brake pressure amplifying device between master brake cylinder and wheel brake caliper by this embodiment.Especially brake-pressure multiplying arrangement can be designed to the adjustable elements that can be used to select to produce brake-pressure rising or brake-pressure reduction function.So just need not install in brake system and multiplely be separated from each other amplifying and the unit of antiblock device for brake-pressure of structure.Employing the present invention can make the adjustment in braking procedure (ABS mode of operation) and braking force amplification mutually to conflict, and so-called conflict mutually refers to the pressure reducing effect that brake booster amplification brake-pressure counteracting control system (such as ABS system) produces.Therefore also the energy of offsetting braking force amplification can not be applied to ABS system.Therefore the present invention is adopted can to reduce specification requirement and assembly cost.Can not vacuum be adopted in addition and carry out braking only by the mode by pure converting electric energy being hydraulic energy and regulate and braking force amplification.
Even if for the motor vehicle braking system being furnished with corresponding brake-pressure multiplying arrangement, also the advantage described in above paragraph can be ensured.
A kind of correlation method of the brake-pressure multiplying arrangement work of brake system that makes equally also can be utilized to realize above-mentioned advantage.
In the useful improvement embodiment of the one of the method, perform brake-pressure regulate by additionally shifting the second braking liquid volume between the output cavity limited by output piston and external pressure batteries.Regulate and braking force amplification, therefore, it is possible to can safety requirements and reliability requirement with the realization of minimum assembly cost owing to can avoid offsetting (such as in order to ABS runs).Braking force can being performed without the need to vacuum to amplify and braking adjustment, only needing to consume in braking procedure by using the reproducible electric energy of electrical generator.Eliminate the specification requirement to assembly simultaneously, thus structure space and the weight of these assemblies can be reduced.
Accompanying drawing explanation
Below will explain other features and advantages of the present invention with reference to the accompanying drawings, accompanying drawing Fig.1A ~ 1D is depicted as the schematic diagram of a kind of embodiment of brake-pressure multiplying arrangement.
Detailed description of the invention
Accompanying drawing 1A ~ 1D is depicted as the schematic diagram of a kind of embodiment of brake-pressure multiplying arrangement.
The brake-pressure multiplying arrangement that accompanying drawing 1A ~ 1D can be schematically illustrated is used for the brake system of vehicle.The vehicle being furnished with brake-pressure multiplying arrangement can be a kind of power actuated vehicle, such as automobile or motor bike.
Brake system, except comprising at least one brake-pressure multiplying arrangement 10, also comprises a master brake cylinder 12 and at least one wheel brake caliper 14.In accompanying drawing 1A ~ 1D, only depict only 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 brake-pressure multiplying arrangement 10 and the wheel brake caliper 14 of a quantification.Such as multiple wheel brake caliper 14 can be arranged in the outgoing side of brake-pressure multiplying arrangement 10.A center brake pressure amplifying device 10 especially can be used for its whole wheel brake caliper 14 by brake system.As an alternative, distribute a brake-pressure multiplying arrangement also can to the wheel brake caliper 14 of each wheel.
Brake-pressure multiplying arrangement 10 has an adjustable ground and is arranged in input piston 16 between input cavity 18 and intermediate volume 20.Input cavity 18 hydraulically can be communicated to master brake cylinder 12 like this, thus raise braking force can be delivered on input piston 16 by means of the pressure in master brake cylinder 12.The pipeline 24 not having valve or be furnished with valve especially can extend between the input cavity 18 being installed on the brake-pressure multiplying arrangement 10 in brake system and the internal volume 22 of master brake cylinder 12.Pressure sensor 26 can be selected to be connected on pipeline 24.
So-called braking force refers to the power that can be used for can being moved at least in part by least one adjustable piston 28 of master brake cylinder 12 in internal volume 22.Such as braking force can be the power that chaufeur is applied in master brake cylinder 12.Adjustable piston 28 of master brake cylinder 12 can connect/connect brake operation element 30, such as a brake pedal.But be not limited only to be used for brake-pressure multiplying arrangement to equip the brake system with brake operation element 30 or a kind of embodiment determined being used for brake operation element 30, brake-pressure multiplying arrangement 10 equally also can interact with the master brake cylinder 12 (such as tandem brake master cylinder) of any type.So-called master brake cylinder 12 also can refer to the pressurized cylinder of simplicity of design.
Can select on the adjustable piston 28 and/or brake operation element 30 of master brake cylinder 12, arrange that at least one is used for measuring the sensor 32 about the manipulated variable operating brake operation element 30.Sensor 32 can be such as braking force sensor, brake-pressure sensor and/or brake stroke sensor, such as rod stroke sensor.But brake system is not limited only to be equipped with the sensor 32 that sensor 32 or determines 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.By such for output cavity 36 hydraulic communication at least one wheel brake caliper 14, thus can change output cavity 36 and the brake-pressure at least one wheel brake caliper 14 by means of the mobile of output piston 34.At least one valveless and/or the pipeline 38 being furnished with valve (such as wheel enters 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.By hydraulic connecting 42, at least another wheel brake caliper 14 can be connected with another parallel brake-pressure multiplying arrangement 10 with master brake cylinder 12 in addition.
By the push rod 44 of brake-pressure multiplying arrangement 10, braking force can be passed to output piston 34 like this from piston 16, thus braking force at least can be utilized to carry out regulation output piston 34.Piston 16 and 34 and push rod 44 are advantageously interconnected with force closure or shape locking mode.Input piston 16, output piston 34 and/or push rod 44 preferably adopt entirety (single-piece) project organization.
In addition brake-pressure multiplying arrangement can also have force application mechanism, can utilize this force application mechanism that braking auxiliary force is applied to output piston 34 like this, thus braking auxiliary force at least can be utilized to carry out regulation output piston 34.Design force application mechanism like this, thus the push rod 44 that can will be applied to force application mechanism as the auxiliary force of mechanical force and contact, and/or the first braking liquid volume can be shifted between the volume at least partially of intermediate volume 20 and external pressure batteries 45.So just can ensure that advantage braking force being passed to together with braking auxiliary force output piston 34.So can ensure cheaper with cost, more lightly and the less patten's design force application mechanism in desired structure space.Also can reduce the energy consumption of force application mechanism by this way simultaneously.
In the embodiments shown in the drawings, intermediate volume 20 is divided into the first intermediate cavity 48 be arranged on input piston 16 and the second intermediate cavity 50 be arranged on output piston 34 by partition 46.It is pointed out that only brake-pressure multiplying arrangement 10 is not limited only to intermediate volume 20 to be divided into two intermediate cavity 48 and 50.Push rod 44 preferably stretches out through the hole in next door 46.Push rod 44 can select (not drawing in the figure) seal ring be disposed in hole to surround.In embodiment described here, input piston 16 is supported on the spring 52 that is arranged in the first intermediate cavity 48.Scheme as an alternative or supplement, output piston 34 also can be supported on the spring that is arranged in the second intermediate cavity 50.
Chamber 18,36,48 and 50 can be formed in same shell 54, thus brake-pressure multiplying arrangement 10 can be designed to compact unit.Brake-pressure multiplying arrangement 10 is contributed to be arranged in brake system like this.
In a kind of useful embodiment, also can form chamber 18,36,48 and 50 in of an integrated brake system hole, the structure space needed for integrated brake system 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 the second intermediate cavity 50 can by described valve system and external pressure batteries 45 hydraulic communication, described external pressure batteries can have lower internal pressure, especially identical with barometric pressure internal pressure.Such as by utilizing the hydraulic connecting between the open external pressure batteries 45 of the first valve system 56 and the first intermediate cavity 48, the volume of change first intermediate cavity 48 just can be allowed.Correspondingly can utilize the hydraulic connecting between open second intermediate cavity 50 of the second valve system 58 and external pressure batteries 45, thus can select to increase or reduce the second intermediate volume 50 according to braking force and/or braking auxiliary force.Equally also can by controlling to activate the volume that at least one valve system 56 or 58 stops changing at least one intermediate cavity in intermediate cavity 48 and 50.Valve system 56 and 58 is preferably in the state of intermediate cavity 48 or 50 by attached troops to a unit and external pressure batteries 45 hydraulic communication under powering-off state.In the simple embodiment of one, braking liquid storage tank is used as external pressure batteries 45.
According to embodiment shown in the drawings, force application mechanism comprises one and is used for the first brake fluid being overstock the braking liquid organization of supply in the first intermediate cavity 48 or the second intermediate cavity 50.It is further preferred that design braking liquid organization of supply like this, thus can select the first braking liquid volume to be transferred in the first intermediate cavity 48 or the second intermediate cavity 50.Therefore braking liquid organization of supply just can be utilized to select increase first intermediate cavity 48 or the second intermediate cavity 50, wherein correspondingly can reduce another intermediate cavity in two intermediate cavity 48 and 50.So just can produce the braking auxiliary force that can be used as pressure 60 and improve, between can selecting therefrom, braking auxiliary force is applied to input piston 16 or output piston 34 by volume 20.The braking auxiliary force suitably such regulation output piston 34 pointing to output piston 34 from intermediate volume 20 can be utilized, thus raise output cavity 36 and the brake-pressure at least one wheel brake cylinder 14.On the contrary, the braking auxiliary force pointing to input piston 16 from intermediate volume 20 then can make the first intermediate cavity 48 increase, and correspondingly reduces the second intermediate cavity 50 simultaneously, increases the volume of output cavity 36 thus.Output cavity 36 and the brake-pressure at least one wheel brake caliper 14 so just can be reduced by the braking auxiliary force pointing 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 raised in master brake cylinder 12.Such as can perform ABS by this way to regulate.Profit can cover up (verblendet) mechanism of power generation kinetic moment in this way equally, also will be described in detail this below.
Brake-pressure multiplying arrangement 10 shown in the drawings comprises the assembly of the first pump machanism 62 (such as at least one pump) as braking liquid organization of supply, can utilize described first pump machanism that the first braking liquid volume is pumped into external pressure batteries 45.Addedly, described braking liquid organization of supply also can have a pressure accumulator that the first pump machanism 62 such as can be utilized to carry out filling from external pressure batteries 45.In the embodiment shown, the first pump machanism 62 is connected with external pressure batteries 45 by induction pipe 64.Can select pressure accumulator chamber 68 to be connected to the feed pipe 66 that extends from the supply side of the first pump machanism 62.The exhaust tube 70 of a band blowdown valve 72 can be drawn in addition from feed pipe 66, thus when there is overvoltage in feed pipe 66, by exhaust tube 70, braking liquid is moved in external pressure batteries 45.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 56 and 58, selects the supply side hydraulic communication by the intermediate cavity 48 or 50 of attaching troops to a unit and external pressure batteries 45 or the first pump machanism 62 by this change-over valve.Therefore, can transfer valve mechanism 56 and 58 accordingly so mutually, thus by the pipeline 74 leading to the first intermediate cavity 48 from the first valve system 56, first intermediate cavity 48 is filled, the braking liquid of the second intermediate cavity 50 is then flowed into external pressure batteries 45 by the pipeline 76 leading to the second intermediate cavity 50 from the second valve system 58.The braking auxiliary force pointing to input piston 16 from intermediate volume 20 can be produced like this.Also can corresponding activated valve mechanism 56 and 58 like this, thus the first pump machanism 62 can be utilized to fill the second intermediate cavity, braking liquid then flows out from the first intermediate cavity 48.The braking auxiliary force pointing to output piston 34 from intermediate volume 20 will be produced like this.
The valve system 56 being designed to change-over valve form can be connected with fluid reservoir pipeline 82 each via pipeline 78 or 80 with 58, and the internal volume 22 of master brake cylinder 12 is also connected on this fluid reservoir pipeline.But this connection mode of the assembly of brake system 12,56 and 58 is only reference example.
It is pointed out that brake-pressure multiplying arrangement 10 is not limited only to force application mechanism to be designed to braking liquid organization of supply.As an alternative or additional project, also can adopt and mechanically construct force application mechanism.Such as force application mechanism can comprise one by motor-driven mechanical transmission mechanism, can especially utilize tooth bar and/or gear that is motor-driven, that can roll along the tooth bar of structure on push rod 44.In this case, force application mechanism contacts with push rod 44.
According to the improvement embodiment of the brake-pressure multiplying arrangement 10 shown in accompanying drawing 1A ~ 1D, brake system also comprises the braking liquid transfer device be made up of assembly 84 ~ 88, can shift the second braking liquid volume by means of this braking liquid transfer device between output cavity 36 and external pressure batteries 45.The second pump machanism 84 (such as at least one pump) such as can be utilized to be pumped into output cavity 36 from external pressure batteries 45 by the second braking liquid volume.Second pump machanism 84 can be connected with output cavity 36 by feed pipe path 90 for this reason.The discharge-service valve 86 be connected with feed pipe path 90 by pipeline 92 controls the braking liquid flowing to external pressure batteries 45 from output cavity 36.Second pump machanism 84 can be connected with fluid reservoir pipeline 82 each via pipeline 94 or 96 with discharge-service valve 86.
Preferably the first pump machanism 62 and the second pump machanism 84 are arranged on the same axle 98 of motor 100.In order to surprisingly drive the second pump machanism 84 utilizing motor 100 to drive to prevent during the first pump machanism 62, an inlet valve 88 can be arranged in and lead to the pipeline 94 of the second pump machanism 84 from fluid reservoir pipeline 82.But the embodiment of the braking liquid transfer device described in this paragraph is only reference example.
Can using the first pump machanism 62 as main pump, and using the second pump machanism 84 as complementary pump.Using the adjustment pump of the first pump machanism 62 as adjustable assembly 16,34 and 44, the second pump machanism 84 can be regulated pump as wheel.In other words, the first pump machanism 62 can be utilized to control the motion of adjustable assembly 16,34 and 44, main purpose amplifies braking force and restriction brake-pressure; Can utilize the volume motion that the second pump machanism 84 and discharge-service valve 86 control between output cavity 36 and external pressure batteries 45, main purpose is that wheel regulates.
The discharge side (installation site shown in the drawings) that also entrance pressure valve exclusive for wheel can be arranged in pump machanism 84 in addition carrys out alternative inlet valve 88.Thus in this case, the first pump machanism 62 also can be used to substitute the second pump machanism 84 regulated for wheel.Equally also a limiting valve can be used in the connection of pressure accumulator chamber 68 and the first pump machanism 62, even if so that the mode when pressure accumulator chamber 68 is emptying also by closing limiting valve prevents the main filled pressure accumulator chamber 68 relative with intermediate cavity 48 or 50.
Brake system shown in accompanying drawing 1A ~ 1D utilizes electric energy as the unique energy source amplifying for braking force and regulate.Especially motor 100 can be used as unique energy converter.Because electric energy can regenerate, therefore can produce easily for regulating the power consumption amplified with braking force.
Except reducing the structure space of brake system and weight, equally also can ensure the system of brake system firm and durable and cheap manufacturing cost.Because according to brake system shown in the drawings, even if when the power supply of brake system is subject to hindering, chaufeur also directly applies braking force at least one wheel brake caliper 14 by master brake cylinder 12, therefore can ensure higher safety rate.Favourable (standard compliant) treadle effort and pedal stroke characteristic curve can be adjusted in addition for brake system.
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, (speed) automatic controls also by vehicle self presets the total braking force square being not equal to zero.When there is pressure p 0, the preferred atmosphere pressure of external pressure batteries 45 in the internal volume 22 of master brake cylinder 12, input cavity 18 and the first intermediate cavity 48, the first pump machanism 62 just can be utilized to raise pressure p 1 in the second intermediate cavity 50.Pressure p 2 in output cavity 36 also can by the mobile and corresponding rising of adjustable assembly 16,34 and 44.The pressure p 2 in the meticulous regulation output chamber 36 of the assembly 84 ~ 88 of liquid transferring machine structure can be utilized.
Accompanying drawing 1C is depicted as by brake system during pilot control braking force input element 30.The pressure p 3 in the internal volume 22 of master brake cylinder 12 and input cavity 18 is raised by brake activation force input element 30.The pressure p 0 that just can ensure in the first intermediate cavity 48 by corresponding switching/activate the first valve system 56 equals the pressure p 0 in external pressure batteries 45.Therefore, can regulate towards output cavity 36 adjustable assembly 16,34 and 44.The first pump machanism 62 can be utilized to be amplified by the brake-pressure applied by chaufeur braking force by chaufeur, and method is the pressure p 4 in rising second intermediate cavity 50 simultaneously.The pressure p 5 in output cavity 36 and at least one wheel brake caliper 14 will be made like this to raise.
Accompanying drawing 1D illustrates the usability of the brake-pressure multiplying arrangement when offsetting the restriction brake-pressure of chaufeur to the manipulation of brake operation element 30.When there is pressure p 3 in the internal volume 22 and input cavity 18 of master brake cylinder 12, the first pump machanism 62 can be utilized in the first intermediate cavity 48 to set up back-pressure p6.Pressure p 7 in second intermediate cavity 50 can be reduced to by corresponding actuating second valve system 58 value being less than pressure p 4 simultaneously.Scheme as a supplement, can also reduce the pressure p 8 in output cavity 36 further by discharge-service valve 86.Such as can reduce pressure p 8 in output cavity to perform ABS function.
Preferably so can design the size of chamber 18,36,48 and 50, thus adjustable assembly 16,34 and 44 can be utilized to offset larger braking force or realize larger rate of volume flow.Especially so can 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 in the position at adjustable assembly 16,34 and 44 place, larger volume can be pressed at least one brake clamp 14, or therefrom outwards sucking-off.In contrast to this, so can mate the size of output cavity 36, thus output cavity can use by wheel exclusively, especially can be used for ABS function.
Brake system ensures that hydraulic pump system being used for simultaneously wheel regulates and braking force amplification.Described pumping system can be used as the central pumping system of all brake circuits, as the special pumping system of brake circuit and/or as the exclusive pumping system of wheel.Also adjustable Mechanical course of assembly 16,34 and 44 can 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 is advantageously suitable for regenerative electric energy in braking procedure.Improve in embodiment in one, brake-pressure multiplying arrangement 10 or be equipped with the brake system of this brake-pressure multiplying arrangement to comprise control setup, design described control setup, make described control setup can the manipulated variable about brake activation operating element 30 that provides of receiving sensor 33 and/or the braking regulation that provided by automatic controls, determine that set amount brakes auxiliary force in other words when considering at least received manipulated variable and/or the braking received specifies, and when considering the set amount determined, corresponding control signal is exported to assembly 56, 58, 62, 68, 84, at least one assembly in 86 and 88.The thered is provided amount of regeneration relevant with the mechanism of power generation kinetic moment of at least one wheel being applied to vehicle also can be provided in addition.Set amount can be determined in this case when additional consideration amount of regeneration.
In shown brake system, leakage of oil effect can be compensated easily, such as, leakage of oil effect on push rod 44/ piston rod, therefore not need to improve tolerance.
In a kind of additional project, (not drawing in figure) valve can also be arranged between intermediate cavity 48 and 50.Even if the electric current supply of brake system is hindered, chaufeur braking force can also be utilized in output cavity 36, to realize boosting by this preferred normally open valve.If require to change pressure, can also by the equilibrium of pressure between this valve control intermediate cavity 48 and 50.Only have like this and just can need after pressure equalization to use braking liquid organization of supply, thus the energy consumption of braking liquid organization of supply can be reduced.
The method step of the vantageous methods of the brake-pressure multiplying arrangement work making brake system has been described in above paragraph.Therefore these method steps are no longer redescribed 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 input cavity (18) and the intermediate volume (20) of brake-pressure multiplying arrangement (10) of brake-pressure multiplying arrangement (10), wherein can, by such for input cavity (18) hydraulic communication on master brake cylinder (12), make the pressure by improving in master brake cylinder (12) braking force can be passed to input piston (16);
The output piston (34) that adjustable ground is arranged between the intermediate volume (20) and output cavity (36) of brake-pressure multiplying arrangement (10), wherein by such for output cavity (36) hydraulic communication at least one wheel brake caliper (14), the brake-pressure that can change by means of regulation output piston (34) in output cavity (36) and at least one wheel brake caliper (14) can be made;
Push rod (44), like this passes to output piston (34) by braking force from input piston (16) by this push rod, thus at least can utilize brake-force control output piston (34);
Force application mechanism, utilizes this force application mechanism braking auxiliary force can be applied to output piston (34) like this, thus at least can utilize braking auxiliary force regulation output piston (34);
It is characterized in that,
The described force application mechanism of such design, the push rod (44) braking auxiliary force as mechanical force being applied to contacted by force application mechanism, and/or the first braking liquid volume can be shifted between at least one partial volume of intermediate volume (20) (48,50) and external pressure batteries (45).
2. brake-pressure multiplying arrangement (10) according to claim 1, wherein can pass to output piston (34) by braking force together with braking auxiliary force.
3. brake-pressure multiplying arrangement (10) according to claim 1 and 2, wherein said force application mechanism comprises with motor-driven mechanical transmission mechanism.
4. brake-pressure multiplying arrangement (10) according to claim 1 and 2, wherein said brake-pressure multiplying arrangement (10) comprises next door (46), intermediate volume (20) is divided into the first intermediate cavity (48) be arranged on input piston (16) and the second intermediate cavity (50) be arranged on output piston (34) by this next door, wherein said push rod (44) stretches out through the hole in next door (46), and surround by seal ring.
5. brake-pressure multiplying arrangement (10) according to claim 4, wherein said brake-pressure multiplying arrangement (10) comprises at least one valve system (56,58), by this valve system, the first intermediate cavity (48) and/or the second intermediate cavity (50) can be connected with braking liquid storage tank (45) hydraulic pressure.
6. brake-pressure multiplying arrangement (10) according to claim 4, wherein said force application mechanism comprises braking liquid organization of supply (62,68), design this braking liquid organization of supply (62,68), so that the partial volume of the first braking liquid volume as intermediate volume (20) is pressed in the first intermediate cavity (48) and/or in press-in the second intermediate cavity (50).
7. brake-pressure multiplying arrangement (10) according to claim 6, wherein said brake-pressure multiplying arrangement comprises at least one change-over valve as at least one valve system (56,58), and/or comprise the valve system with change-over valve function, selectively attached troops to a unit the first intermediate cavity (48) or the second intermediate cavity (50) are connected with the supply side hydraulic pressure of braking liquid storage tank (45) or braking liquid organization of supply (62,68) by described change-over valve.
8. brake-pressure multiplying arrangement (10) according to claim 6, wherein said braking liquid organization of supply (62,68) comprises the pressure accumulator that can carry out from the braking liquid storage tank (45) as external pressure batteries (45) filling.
9. brake-pressure multiplying arrangement (10) according to claim 6, wherein said braking liquid organization of supply (62,68) comprise pump machanism (62), this pump machanism can be utilized to pump the first braking liquid volume from as the braking liquid storage tank (45) of external pressure batteries (45).
10. brake-pressure multiplying arrangement (10) according to claim 1 and 2, wherein said brake-pressure multiplying arrangement (10) comprises control setup, the manipulated variable about brake activation operating element (30) that this control setup provides with receiving sensor (32) and/or the braking regulation provided by automatic controls are provided, the set amount about braking auxiliary force is determined when considering at least received manipulated variable and/or the braking received specifies, and when considering determined set amount, corresponding control signal is exported to force application mechanism.
11. brake-pressure multiplying arrangements (10) according to claim 10, wherein said control setup additionally so designs, to be used for receiving provided amount of regeneration relatively with the mechanism of power generation kinetic moment of at least one wheel being applied to vehicle, and set amount can be determined when additional consideration amount of regeneration.
12. brake-pressure multiplying arrangements (10) according to claim 1 and 2, wherein said brake-pressure multiplying arrangement (10) also comprises liquid transferring machine structure (84,86,88), the second braking liquid volume can be shifted between output cavity (36) and external pressure batteries (45) by this liquid transferring machine structure.
13. are furnished with the motor vehicle braking system by brake-pressure multiplying arrangement (10) according to any one of the claims.
14. methods that the brake-pressure multiplying arrangement (10) of motor vehicle braking system is worked, described brake-pressure multiplying arrangement has the adjustable input piston (16) to its conveying braking force, adjustable output piston (34), the intermediate volume (20) limited by input piston (16) and output piston (34) and push rod (44), by push rod, braking force is passed to output piston (34) like this from input piston (16), thus at least can utilize the such regulation output piston (34) of braking force, thus the brake-pressure changed at least one wheel brake caliper (14), said method comprising the steps of:
Braking auxiliary force is applied to like this output piston (34), thus at least utilizes braking auxiliary force regulation output piston (34),
It is characterized in that following steps:
Braking auxiliary force as mechanical force is directly applied to push rod (44), and/or apply to brake auxiliary force by the mode shifting braking liquid volume between at least one partial volume (48,50) and external pressure batteries (45) of intermediate volume (20).
15. methods according to claim 14, wherein perform brake-pressure to regulate, method additionally between the output cavity (36) limited by output piston (34) and external pressure batteries (45), shifts 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 CN102729970A (en) | 2012-10-17 |
| CN102729970B true 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 |
|---|---|
| CN102729970A (en) | 2012-10-17 |
| FR2973762B1 (en) | 2017-06-23 |
| DE102011007095A1 (en) | 2012-10-11 |
| FR2973762A1 (en) | 2012-10-12 |
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