CN109195843A - For running method, the hydraulic braking system of hydraulic braking system - Google Patents
For running method, the hydraulic braking system of hydraulic braking system Download PDFInfo
- Publication number
- CN109195843A CN109195843A CN201780034438.3A CN201780034438A CN109195843A CN 109195843 A CN109195843 A CN 109195843A CN 201780034438 A CN201780034438 A CN 201780034438A CN 109195843 A CN109195843 A CN 109195843A
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- Prior art keywords
- brake
- pressure
- booster
- brake pedal
- pedal
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/4072—Systems in which a driver input signal is used as a control signal for the additional fluid circuit which is normally used for braking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/662—Electrical control in fluid-pressure brake systems characterised by specified functions of the control system components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/042—Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force sensors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- 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
- B60T8/48—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 connecting the brake actuator to an alternative or additional source of fluid pressure, e.g. traction control systems
- B60T8/4809—Traction control, stability control, using both the wheel brakes and other automatic braking systems
- B60T8/4827—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems
- B60T8/4863—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems closed systems
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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 present invention relates to a kind of methods for running the hydraulic braking system (1) of motor vehicle, wherein main braking cylinder (3) and at least one brake circuit (4) that the braking system (1) has brake pedal (2), mutually couples with brake pedal (2), at least one described brake circuit has at least one wheel drag (9), and one of brake force enhancing is automatically adjusted according to brake pedal operation.Be provided with herein, brake force enhancing at least through can manipulate in the booster (12) in brake circuit (4) on the one hand according to brake pedal operation and on the other hand basis in main braking cylinder (3) or hydraulic pressure in wheel drag (9) and generate.
Description
The present invention relates to a kind of methods for running the hydraulic braking system of motor vehicle, wherein the braking system has
Have brake pedal, the main braking cylinder mutually coupled with brake pedal and at least one brake circuit, it is described at least one brake back
Road has at least one wheel drag, wherein automatically adjusting a kind of brake force enhancing according to brake pedal operation.
In addition, the present invention relates to a kind of corresponding hydraulic braking system, which has at least one brake force
Enhance equipment, a kind of brake force enhancing can be adjusted by means of brake force enhancing equipment.
Background technique
It is known from the state of the art the method and braking system of the type mentioned when beginning.Motor vehicle is commonly provided with hydraulic
Braking system, the braking system allow also to generate brake force to each wheel when the driver of motor vehicle operates brake pedal.
It usually is assigned with a kind of brake force booster to main braking cylinder herein, the brake force booster is generally configured to vacuum braking power
Booster, and be introduced into the power on brake pedal is applied to by driver in hydraulic braking system or introduce with increasing
Into hydraulic circuit, so that for example reach the operation braking effect required legally.Therefore the brake force booster provides
Necessary holding power, and at the same time produce it is being accustomed to for driver, with the reaction force characteristic clearly shown
The brake pedal feel of curve.The characteristic curve usually has before it can discover raised reaction force and resist driver
The deceleration determined by the mechanical construction of vacuum brake force booster.Also referred to as transition moment at the time of in this way
(JumpIn-Zeitpunkt) or transition effect (JumpIn-Effekt): at the moment, the reaction force is correspondingly risen
It is high.
Known vacuum brake force booster is former furthermore according to the work of the vacuum brake force booster supported about power
Reason ensures: although the volume saturation of each wheel drag changes, existing always in pedal for driver
Interrelated and reproducibility between power and brake force or vehicle deceleration.
The disclosure
The method of feature according to the present invention with claim 1 this have the advantage that, passes through a kind of braking that can be manipulated
That is power enhancing equipment by the brake force that mechanically separates with brake pedal enhancing equipment can generate the brake force
Enhancing, without occurring the undesirable feeling for driver on brake pedal.Particularly, by according to the present invention
Method realizes: ensure it is interrelated between pedal force and vehicle deceleration so that driver is when driving vehicle
Always reliable feeling is obtained.According to the present invention, thus this is realized: the brake force enhancing can be manipulated at least through one kind
, booster in brake circuit is on the one hand according to the brake pedal operation and on the other hand according in main braking cylinder
In or hydraulic pressure in wheel drag generate.By one side according to the brake pedal operation and another
On the one hand it is ensured that according in main braking cylinder or in wheel drag pressure to manipulate the booster: a side
Face shifts desired volume in each wheel drag onto, to generate desired brake force；And it on the other hand protects in this wise
The pressure in main braking cylinder is held or adjusts, so that driver obtains the known driving experience for him.
A kind of preferred improvement project according to the present invention is provided with, and the system is detected by means of pedal travel sensor
Dynamic pedal operation.Therefore it is provided with, the brake pedal operation is detected by stroke sensor.It measures in this case
Pedal travel, and the booster is manipulated accordingly, particularly thus acquire goal pressure or reason for main braking cylinder
By pressure, and thus acquire driver's reaction force.
It is preferably provided with thus, by means of characterisitic family and/or characteristic curve, according to the brake pedal detected
Operation is to determine the goal pressure or reaction force.
The theoretical pressure for wheel drag has preferably been determined furthermore according to brake pedal operation.Pass through the braking
Pedal operation or the pedal travel detected, therefore acquired the theoretical pressure of wheel drag.This is particularly alternatively
It realizes with being either additional to the theoretical pressure for acquiring or determining the main braking cylinder.Determined theoretical pressure is used as respectively
For the aim parameter when manipulating the booster, so that particularly using the only one aim parameter in the aim parameter
In the case of (the preferably theoretical pressure of main braking cylinder, alternative is the theoretical pressure of wheel drag), when it is other so
When the aim parameter not being conditioned does not reach or is exceeded, the aim parameter is suitably matched, so that realizing two
The variation that is mutually related of aim parameter.
Preferably, the booster depending on brake pedal operation is accommodated according to the desired volume of wheel drag
Amount it is steered.Brake circuit, particularly wheel drag volume saturation is understood, the booster is grasped in this wise
Control so that for the pressure initiation in main braking cylinder the unwanted volume of institute be pushed in brake circuit or by
It elapses in each wheel drag.Pressure adjusting in the case where considering the pressure in main braking cylinder is preferably superimposed
In the volume, the not only manipulation quilt of one or more valve of the manipulation but also brake circuit of booster when the pressure is adjusted
It is suitably carried out matching, to keep or adjust in this wise in brake circuit and in main braking cylinder pressure,
So that desired brake pedal reaction force characteristic curve reaches in desired wheel pressure.Main braking cylinder about
The reaction force characteristic curve or theoretical pressure characteristic curve of pedal travel should be formed in this wise herein, so that imitating
The pedal force change curve of vacuum brake force booster, to provide known pedal sense to driver.
The booster is special according to the theoretical pressure-or goal pressure for main braking cylinder or wheel drag thus
Linearity curve and be steered, the theoretical pressure-or goal pressure characteristic curve provide corresponding pedal sense.
The goal pressure characteristic curve advantageously according to idle stroke, particular according to the pre-filled of brake circuit and/or
The air gap is elapsed using a kind of bias as amplitude.Thus it achieves particularly, the pressure in main braking cylinder is until jump
It keeps or is maintained on 0 bar with becoming moment no pressure, and reaction force then just increases.It is thus achieved that for driver
For desired traditional pedal force change curve.Pedal force preferably passes through elastic device until reaching the rising of transition power
It completes, the elastic device particularly distributes to brake pedal.The bias is particularly confirmed as predetermined liquid
The difference of the stroke of pressure pressure and the stroke stored in theoretical characteristic curve, the predetermined hydraulic pressure is particularly
Reach in the terminal of the transition.Hydraulic pressure to be achieved is not related to the pressure at the terminal of the transition necessarily herein
Power, but arbitrary hydraulic pressure that can also alternatively below this value.
It is further preferably provided with, acquires the stiffness coefficient of the brake circuit with being additional to the bias, and answer
It uses on the goal pressure characteristic curve.Particularly goal pressure characteristic curve is carried out by amplitude of the bias thus
Passage, so that overlapping in transition moment processing opinion-and actual pressure.Then, it by forming quotient, particularly acquires described rigid
Coefficient is spent, and converts and goes back with biasing passage.Zoom factor, the zoom factor have been obtained from the stiffness coefficient
It is used on goal pressure characteristic curve, results in current goal pressure characteristic curve.Therefore it ensure that, it is described to step on
Plate power and wheel pressure/wheel movement are interrelated as in traditional vehicle with vacuum brake force booster, and
And the rigidity of braking system and the volume saturation changed have only resulted in the variation of the pedal travel in desired deceleration.
The braking system of feature according to the present invention, with claim 9 is characterized in that the brake force enhancing is set
Standby to have the booster that manipulated, the booster passes through the controller being specifically arranged and is manipulated, the controller quilt
It is configured to: manipulating the booster according to according to the method for the present invention.Occur in this case already mentioned excellent
Point.It preferably is configured with elastic device to the brake pedal, the elastic device ensure that brake force or reaction force increase
It is long, until reaching the transition power.
Main braking cylinder and/or wheel drag preferably respectively have at least one hydraulic pressure sensor, for detecting
In main braking cylinder or the hydraulic pressure present in wheel drag.
It is further preferably provided with, is configured with pedal travel sensor to the brake pedal, so that brake pedal is grasped
Make to move by the monitoring brake pedal and monitors the stroke passed by by brake pedal particularly to acquire.
Further preferably be provided with, brake circuit have at least one can operate, in main braking cylinder and wheel braking
Switching valve between device.The switching valve is particularly unlimited in currentless state so that by pedal operation with
When can increase brake pressure at wheel drag.If the switching valve is passed to electric current, the switching valve is just
The connection between brake circuit and main braking cylinder is closed, so that pressure cannot be leaked out from brake circuit.The switching valve
It is particularly mutually coupled in discharge side with booster herein, so that being generated in brake circuit when the booster is steered
Pressure be kept or be raised in brake circuit by switching valve.
Other advantage and the combination of preferred feature and feature particularly by description before and by claim and
It obtains.Hereinafter the present invention can be further illustrated by means of attached drawing.It shows thus:
The braking system in simplified diagram of Fig. 1 motor vehicle,
Fig. 2 is used to illustrate the attached drawing of the brake force enhancing, and
Fig. 3 is used to illustrate a kind of attached drawing of method for being advantageously used for running the braking system.
Fig. 1 shows hydraulic braking system 1 in simplified diagram, and the braking system is for a kind of here not into one
Motor vehicle shown in step.When driver wants to start braking process or want to start to reducing speed of motor vehicle, the braking system
System 1 is manipulated by brake pedal 2 by the driver of motor vehicle.The brake pedal 2 is coupled with 3 phase of main braking cylinder.Braking
Pedal 2 can be coupled directly or indirectly by movable joint transmission device and 3 phase of main braking cylinder herein, for mobile in main system
Piston in dynamic cylinder, for generating hydraulic pressure.
Main braking cylinder 3 is hydraulically connected with brake circuit 4.In principle, braking system 1 also can have more than only one
A brake circuit 4.Currently, brake circuit 4 has high pressure switching valve 5 and switching valve 6, the high pressure switching valve and switching valve
It connects parallel with one another.The high pressure switching valve 5 is closely constructed to no current as switching valve 6.High pressure switching valve 5 it
After be dump valve 7, which similarly closely constructs to no current.It is to enter valve 8 after switching valve 6, this enters valve
Openly construct to no current.Both the dump valve 7 and entrance valve 8 are hydraulically connect with the wheel drag 9 of braking system,
The wheel drag is assigned to a wheel in the wheel of motor vehicle.The wheel drag 9 is in a conventional manner and square
Method is constructed, and thus particularly with the brake piston that at least one can movably be supported in caliper, the system
Piston can be operated by the hydraulic pressure from brake circuit 4, to be torsionally connected towards primary antibody with wheel
Brake disc by jam-packed.The brake disc particularly quilt between the brake lining of wheel drag 9 arranged opposed to each other herein
It clamps, thereby produces the friction between brake lining and brake disc, which results in depending on hydraulic brake force
Braking torque on wheel.Furthermore it is configured with pressure sensor 10 to the wheel drag 9, which exists
Hydraulic pressure in wheel drag.It similarly is assigned with pressure sensor 11 to main braking cylinder 3, which acquires
Or the pressure of the detection main braking cylinder.Between high pressure switching valve 5 and dump valve 7, it is furthermore hydraulically connected to booster
12 suction side, wherein the booster 12 is linked into brake circuit 4 between switching valve 6 and entrance valve 8 on the pressure side.Institute
The pump that booster 12 drives with being configured to electric notor according to current embodiment is stated, when the pump passes through the controller of braking system 1
13 when being correspondingly steered, which can increase in switching valve at any time and enter hydraulic between valve 8 or wheel drag 9
Pressure.
Operated/state that is passed to electric current in, high pressure switching valve 5 is opened towards the direction of booster 12, wherein
The dump valve 7 is opened in state being operated or being steered towards the direction of high pressure switching valve 7 or booster 12.
Switching valve 6 is opened towards the direction of main braking cylinder 3 in the state operated and towards the direction for entering valve 8.Similarly, into
Enter valve 8 to open towards both direction, that is towards switching valve 6 and towards wheel drag 9.
By method that is discussed below, being implemented by controller 13, described herein, for electricity and nothing
In the brake force enhancing of vacuum, closed braking system 1, the mutual pass between pedal force and vehicle deceleration is ensured that
Connection.The basic component of ESP- system can be used in this case.Particularly, valve 4,6,7,8 and booster 12 be
The component part of some ESP- systems so that for execute this method, the surcharge in structure it is especially small.
The vacuum brake force booster being usually generally arranged, the vacuum brake force booster are lacked according to the present embodiment
It is connected between brake pedal 2 and main braking cylinder 3.Instead, brake force enhancing or-support are automated by means of booster 12
It realizes on ground.Because described on brake pedal 2 in order to generate the brake force enhancing by the pressure difference on switching valve 6
The reaction force for resisting driver must be adjusted on the pedal travel of brake pedal 2, therefore driver experiences always
Will appreciate that between pedal force or reaction force and brake force or vehicle deceleration is interrelated.
The available brake fluid volume of braking system 1 is pre-arranged about the pedal travel of brake pedal 2, with
So that the raised volume saturation of wheel drag 9 for example results in smaller wheel pressure or brake pressure, and because
This results in smaller vehicle deceleration.Pressure in main braking cylinder and thus react to it is on brake pedal 2 or
Resist driver counteractive reaction force however be conditioned according to the theoretical characteristic curve of main braking cylinder 3.In reaction force
Therefore interrelated or reproducibility between vehicle deceleration no longer exists in the volume fluctuation for example more than 30%.
In the case where not other measure, therefore braking system 1 cannot reach the tune of the theoretical pressure of the main braking cylinder simultaneously
The adjusting target of the wheel pressure of program mark and wheel drag 9, the theoretical pressure of the main braking cylinder result in corresponding anti-
Active force, the wheel pressure result in the corresponding deceleration of motor vehicle.
It is ensured by method discussed below with this interrelated between reaction force and vehicle deceleration: when
In addition when aim parameter that is or not being conditioned does not reach or is exceeded, by only using existing aim parameter
One aim parameter --- preferably the theoretical pressure of main braking cylinder or it is alternative be wheel drag 9 theoretical pressure ---
In the case of, the aim parameter is suitably matched, so that reaching the variation that is mutually related of two aim parameters.
Furthermore it is configured with pedal travel sensor 14 to brake pedal 2, which monitors brake pedal 2
Movement.According to the pedal travel of brake pedal 2 detected, controller 3 is first by means of ready for use and depend on each
The characteristic curve of a motor vehicle calculates goal pressure, for reaching the desired reaction force on brake pedal 2.Using pair
It in the understanding of the volume saturation of braking system 1, is manipulated by the pre-control of booster 12, so as to will be in main brake
The unwanted volume passage of institute is into brake circuit 4 for pressure initiation in cylinder 3.Using pressure sensor 11
Pressure adjusting be suitably superimposed on the volume, the pressure adjusts the behaviour being not only suitably matched with for booster 12
Control, and suitably it is matched with the manipulation for switching valve 6.
A kind of goal pressure characteristic curve is formed in this wise, so that driver is although in no vacuum brake force booster
In the case where the brake force of the automation support but still obtained the known driving sensation for him, the mesh
Mark pressure characteristic shows the goal pressure or theory in the movement travel of brake pedal 2 of especially main braking cylinder
Pressure, to imitate the pedal force change curve or reaction force change curve of a kind of vacuum brake force booster.By with
Under type realizes so-called transition effect (Jumpln-Effekt): the goal pressure characteristic curve of main braking cylinder 3 is until transition
It is maintained on 0 bar to moment no pressure.
Fig. 2 shows three attached drawings in simplified diagram thus, and the attached drawing shows work respectively about pedal travel s
For the pedal force F of the reaction force of resistance driverP, pressure p in main braking cylinder 33And the pressure p of wheel drag 99。
Herein it can be seen that, in pedal force F2Initial position in since 0, and in pressure p3And p9It is middle to be opened respectively from 0 bar
Begin.Position s is arrived in brake pedal 21First movement section in, reaction force F2 is only by the bullet for distributing to brake pedal 2
Property device (Befederung) 15 increase, the elastic device is only sketched out in Fig. 1.In order to get over overtravel s1, institute
It states transition effect to play a role, as the pressure p by means of wheel drag 99As it can be seen that, when the pressure is from this
Rising is carved.As already stated, the pressure p at the moment, in main braking cylinder 33It is primarily remain on 0 bar.?
Cross the travel point s later2When transition effect after, pedal force F2With the pressure p in main braking cylinder 33Just rise.
Fig. 3 shows the theoretical pressure for how determining for this method and being used for main braking cylinder 3 shown in Fig. 2
Characteristic curve, so that the known braking force characteristic for driver on brake pedal 2 can be felt, wherein real
Perhaps actual characteristic curve is shown in solid actual value and the theoretical value or theoretical characteristic curve are shown in dotted line.
It determines (A) first, which pedal travel s the transition effect (s occurs at1).Using to this corresponding value from
Theoretical pressure characteristic curve calculates stroke and elapses Δ s.In order to which transition effect is correctly arranged in the pressure of main braking cylinder 3,
For main braking cylinder theoretical pressure until the stroke obtained be 0 bar.Therefore, the pressure p in master cylinder 33Theoretical pressure
Characteristic curve using the bias Δ s as amplitude elapse, so as to compensate the braking system 1 be prefilled with or it is that may be present
The air gap increased.
In hydraulic braking system 1, the rigidity of the brake circuit 4 furthermore can change.This can pass through rigidity system
F is counted to balance.The stiffness coefficient is determined (B) in the following manner: by the theoretical pressure characteristic curve of wheel drag 9 with
Identified bias Δ s is that amplitude is elapsed, so that theoretical pressure and actual pressure are in moment travel point in other words
Place is just stacked up and down as illustrated in Figure 3, occurs the transition effect at the moment in other words travel point.
The stiffness coefficient f is acquired by forming quotient, and is converted and gone back with biasing passage.Then, which makees
For zoom factor in other words proportionality coefficient (Skalierungsfaktor) be applied to main braking cylinder 3 theoretical pressure characteristic it is bent
On line, and the current goal pressure characteristic curve K of (C) for main braking cylinder 3 is thus acquired online3.It thus ensures,
Reaction force and wheel pressure or vehicle deceleration picture on brake pedal 2 have vacuum braking power power-assisted in traditional
It is interrelated like that in the vehicle of device, and the rigidity of braking system 1 and the volume saturation having had changed subtract desired
Pedal travel variation is only resulted in when fast.
Advantageously, described method is applied in the operating operation of motor vehicle.But it is also possible that storage is flat
Equal Long-term, and when necessary in this case by the Long-term for example as default value come using: in the situation
In cannot apply a kind of On-line matching.Such situation --- assessment is impossible wherein --- be, for example, emergency braking or
Person has the braking of high operation power, in the emergency braking or when with the braking of high operation power, delay and stagnant
Only pressure may distort obtained result.Even if in extremely low such as T < -30 DEG C of temperature, due to used hydraulic
Jie's qualitative attribution is also able to carry out calculating with increased stagnation pressure effect and the reduced transmission power of booster 12,
So that stored Long-term is so preferably used.
The method current setting utilizes the adaptation for wheel pressure or wheel drag 9 pressure divergence
To carry out the adjusting of the pressure for main braking cylinder 3；And be provided with according to alternative embodiment, this is carried out in turn, so that
It is carried out using the adaptation of the pressure divergence for main braking cylinder 3 for wheel pressure or in wheel drag 9
Pressure adjusting.
Claims (12)
1. the method for the hydraulic braking system (1) for running motor vehicle, wherein the braking system (1) has brake pedal
(2), the main braking cylinder (3) and at least one brake circuit (4) coupled with brake pedal (2), it is described at least one brake back
Road has at least one wheel drag (9), wherein a kind of brake force enhancing is automatically adjusted according to brake pedal operation,
It is characterized in that, the brake force enhances the booster (12) one that can be manipulated at least through one kind in brake circuit (4)
Aspect according to brake pedal operation and on the other hand according in main braking cylinder (3) or in wheel drag (9)
Hydraulic pressure and generate.
2. the method according to claim 1, wherein the brake pedal operation is by means of pedal travel sensor
(14) it detects.
3. method according to any of the preceding claims, which is characterized in that grasped according to the brake pedal detected
Make the theoretical pressure to determine the main braking cylinder (3).
4. method according to any of the preceding claims, which is characterized in that determine use according to brake pedal operation
Theoretical pressure in wheel drag (9).
5. method according to any of the preceding claims, which is characterized in that the booster (12) depends on pedal
Operatively manipulated according to the desired volume saturation of wheel drag (9).
6. method according to any of the preceding claims, which is characterized in that the booster (12) is according to for leading
Checking cylinder (3) or wheel drag (9) goal pressure characteristic curve is steered.
7. method according to any of the preceding claims, which is characterized in that the goal pressure characteristic curve according to
Idle stroke, particular according to brake circuit (4) be prefilled with and/or the air gap with bias (Δ s) is passed for amplitude.
8. method according to any of the preceding claims, which is characterized in that according to the bias, (Δ s) acquires institute
The stiffness coefficient (8) of brake circuit (4) is stated, and is applied on the goal pressure characteristic curve.
9. the hydraulic braking system (1) of motor vehicle is used for, with brake pedal (2), the main system coupled with the brake pedal (2)
Dynamic cylinder (3) and there is at least one brake circuit (4), at least one described brake circuit has at least one wheel drag
(9), wherein being configured at least one brake force enhancing equipment to the brake circuit (4), which is characterized in that the brake force increases
Strong equipment has the booster that can be manipulated, and the booster passes through the controller (13) being specifically arranged and is steered, the control
Device processed is configured to: according to manipulating the booster (12) according to method described in any item of the claim 1 to 8.
10. braking system according to claim 9, which is characterized in that the main braking cylinder (3) and/or the wheel system
Dynamic device (9) are respectively provided at least one hydraulic pressure sensor (10,11).
11. braking system according to any one of the preceding claims, which is characterized in that be configured with to brake pedal (2)
Pedal travel sensor (14).
12. braking system according to any one of the preceding claims, which is characterized in that the brake circuit (4) has
At least one switching valve (6) that can be operated between the main braking cylinder (3) and the wheel drag (9).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016209781.4 | 2016-06-03 | ||
| DE102016209781.4A DE102016209781A1 (en) | 2016-06-03 | 2016-06-03 | Method for operating a hydraulic brake system, hydraulic brake system |
| PCT/EP2017/058396 WO2017207147A1 (en) | 2016-06-03 | 2017-04-07 | Method for operating a hydraulic braking system, hydraulic braking system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109195843A true CN109195843A (en) | 2019-01-11 |
| CN109195843B CN109195843B (en) | 2021-10-22 |
Family
ID=58503625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780034438.3A Active CN109195843B (en) | 2016-06-03 | 2017-04-07 | Method for operating a hydraulic brake system, hydraulic brake system |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6886011B2 (en) |
| CN (1) | CN109195843B (en) |
| DE (1) | DE102016209781A1 (en) |
| WO (1) | WO2017207147A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2017207147A1 (en) | 2017-12-07 |
| JP6886011B2 (en) | 2021-06-16 |
| DE102016209781A1 (en) | 2017-12-07 |
| JP2019518660A (en) | 2019-07-04 |
| CN109195843B (en) | 2021-10-22 |
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