CN103832426B - The method and brake system controller for being vented hydraulic vehicle brake system - Google Patents
The method and brake system controller for being vented hydraulic vehicle brake system Download PDFInfo
- Publication number
- CN103832426B CN103832426B CN201310586936.2A CN201310586936A CN103832426B CN 103832426 B CN103832426 B CN 103832426B CN 201310586936 A CN201310586936 A CN 201310586936A CN 103832426 B CN103832426 B CN 103832426B
- Authority
- CN
- China
- Prior art keywords
- pressure
- braking system
- brake
- pump installation
- vehicle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
- B60T17/221—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems
- B60T17/222—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems by filling or bleeding of hydraulic systems
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
A method of at least part for the brake fluid system to vehicle is vented, wherein, braking system includes at least one brake circuit, its pressure can pass through the pump installation of at least one motor drive --- especially ESC pump --- (14a, 14b) selectively increase, in the case where not opening exhaust valve, the partial brake system that will be vented can be given to apply the increased pressure specified period by pump installation (14a, 14b).
Description
Technical field
The present invention relates to a kind of methods that at least part for making hydraulic vehicle brake system is vented and braking system to control
Device, wherein braking system includes at least one brake circuit, passes through the pump installation of at least one motor drive, brake circuit
Pressure can selectively increase.
Background technique
For brake fluid system used in vehicle, particularly automobile, known its is correctly vented extremely important.Work as braking
When pressure increase, the bubble remained in systems is compressed, and results in the elastic behavior of braking transmission channel, and is therefore resulted in
Increased pedal operation stroke is considered interference by driver and also constitutes security risk in extreme circumstances.
For various reasons, do not always ensure that braking system is perfectly filled without gas, especially in vehicle production
Braking system is for the first time during filling hydraulic fluid.Even if being less than safety critical threshold value, this also leads to improper
Long pedal operation stroke and the discomfort for therefore causing driver, can lead to a period of time in workshop, this is logical for new car
It should often be avoided by.
However, traditional exhaust process introduces hydraulic fluid by the pressure source from certain point in braking system, and open
One or more exhaust valves at other points are opened, fluid flowing is then implemented, until exhaust valve no longer releases bubble, which is needed
Relatively high cost, therefore, based on the considerations of time and cost, such exhaust process is in vehicle production as necessary step
It suddenly is unpractical.
Summary of the invention
The object of the present invention is to provide a kind of method of the above-mentioned type and/or devices, are being not necessarily to additional equipment and time
In the case where cost, ensure a kind of exhaust condition of better and/or more repeatable braking system, it is especially raw in vehicle
During production, and after the maintenance work of braking system.
To achieve the goals above, the present invention proposes a kind of side that at least part to hydraulic vehicle brake system is vented
Method, wherein braking system includes at least one brake circuit, and by the pump installation of at least one motor drive, which is returned
The pressure on road can selectively increase.To be exhausted, increasing is generated in the partial brake system to be vented by pump installation
The pressure added, and apply the increased pressure specified period, and this process is not turned on exhaust valve.
The activation of at least one pump will lead to the brake in concerned brake circuit and be applied to immediately utmostly.Once
This thing happens, it is impossible to convey more hydraulic fluids, and therefore pump fights the output of closing to do work, and thus can tire out
The high hydrostatic pressure of product.
Surprisingly, it has been found that, if carrying out being temporarily increased for this pressure when applying relatively high force, i.e.,
Make to be not turned on exhaust valve, being temporarily increased of the pressure also will eventually lead to gas and permanently remove from braking system, even
After pressure increase terminates again.
It is in consideration the reason for this is that remaining gas is dissolved in brake fluid under the high pressure of application in braking system, and
It is hereafter basic to keep dissolution or chemical bonding wherein and due to chemically or physically process.
Be further explained and be, after remaining gas is dissolved in brake fluid, by the other positions of braking system, spy
The low pressure near master cylinder not being usually present, remaining gas are discharged again, also, are connected to usual existing expansion tank
In the process, gas finally escapes into expansion tank and is discharged in atmosphere from expansion tank.
It is further possible that at a very high pressure, gas is easier to be discharged from small gap than hydraulic fluid, example
Such as, the small gap discharge from brake-piston seal part, therefore also achieve " automatic " exhaust.
Finally, it could also be possible that residual gas caused by pressure passes through the diffusion process of brake piping material.
Above-mentioned any phenomenon is the final main cause for removing gas permanently actually, or whether there are also other phenomenons to send out
The effect of waving, it is not immediately clear.
In short, a series of test display, is braked by according to the method for the present invention, can be realized the new car substantially reduced
Interfering residue gas scale of construction in system.
In the present invention, it is particularly advantageous to being ready for use on during passing through the brake regulation of electronic stability control
The pump (ESC pump) for increasing the pressure in braking system may be used as the pump installation of motor drive.Since the pump is present in
In braking system, and it can be controlled selectively to apply pressure to braking system, therefore corresponding pressure may be implemented
Increase without additional equipment cost.
In contrast, if it is necessary to couple additional external pump, other than fringe cost, will also be introduced in oriented system
The risk of more gases.
(ESC is electronic stabilizing control system to the pump of ESC used in braking system, also referred to as[Daimler is public
The registered trademark of department]) it is usually electric piston pump, the performance as needed for brake application, it is big which can generate the order of magnitude
The about over-pressure of 200bar (high overpressure).The pressure used in the method is generally higher than 50bar, preferably
Ground is greater than 100bar, particularly preferably is greater than 180 and arrives 200bar.What such pressure still allowed far below braking system always
Pressure limit, the limit are about 300bar.The maximum pressure of application is lower than corresponding pressure limit under any circumstance.
Preferably, the period in static vehicle by increased pressure using at least 5 seconds and less than 2 minutes, preferably
At least 10 seconds and be less than 1 minute, particularly preferably about 10 to 20 seconds.In test before, about 20 seconds high pressure phases are shown
Remarkable result.It is continuous in the pumping procedure for the valve that confrontation is closed that the duration of high pressure phase depends on corresponding pump
Load capacity.In order to avoid thermal overload, high pressure phase can also be implemented intermittently with multiple cooling stages.
Exhaust process preferably carries out in a part of braking system, by least one pump installation and passes through braking system
The suitable positioning of the control valve of system, the part can be placed under increased pressure.If there is independently of one another by pressure institute
Multiple brake circuits of effect, then it can simultaneously or successively be acted on by pressure.In general, master cylinder and expansion tank region cannot
The pressure being increased is acted on, because described device is usually used as the reservoir of ESC pump at air inlet side (induction side).
Preferably, exhaust process according to the present invention can be after first time fills hydraulic fluid to braking system soon
It carries out, is preferably carried out in the production process of the vehicle with braking system.However in principle, which can also make in maintenance
It is carried out in workshop after dynamic system.
In order to activate the exhaust process in the vehicle for including electronic brake controller, which is connected to vehicle
The CAN bus of inside and at least one electronic ESC pump can be controlled and multiple braking system control valves, exhaust process are preferred
Ground relies on the peripheral control unit for being connected to brake monitor by CAN bus to cause.Thus start at least one ESC to pump and adjust
The control valve of braking system is saved, to accumulate required increased pressure in the part for being able to maintain pressure of braking system.
Replace peripheral control unit or other than peripheral control unit, can also pass through built-in vehicle according to the method for the present invention
Maintenance menu cause.Certainly, this can only occur in stationary vehicle, because brake is fully locked in pressure increase.
If pump is capable of providing pressure more higher than required increased pressure, which can pass through safe by-passing valve
Limitation.Selectively, it can adjust or adjust using revolution speed (may the be zero) active control that actual pressure measurements pass through
Seamless power.
In addition, in order to achieve the above objectives, the invention proposes the braking system controls for the vehicle with braking system
Device processed, the braking system have dynamic Ride Control System and at least one flow of pressurized used in dynamic Driving control process
Body pump, wherein the controller can control at least one pump, and can control the valve being provided in braking system, so as to extremely
A few pump can apply pressure at least part of braking system.Thus the control designed for being vented braking system
Device so that its period for activating at least one pump specified, and in the case where not opening exhaust valve braking system extremely
The pressure of cumulative rises in few a part.
Detailed description of the invention
The present invention is described in detail by way of example for attached drawing used below.In attached drawing:
Fig. 1 shows the schematic diagrames of the motor vehicle braking system under the usual state of un-activation ABS or ESC；
Fig. 2 expression carries out ESC intervention, braking system shown in FIG. 1 to front wheel brake, and
Fig. 3 is to illustrate in braking system exhaust process achievable improved chart in frame of the present invention.
Specific embodiment
Fig. 1 shows the schematic diagrames of the brake fluid system (running brake) with ABS and the automobile of ESC.The braking
System is only shown as example；The present invention can be used for a variety of different braking system configurations.According to legal provisions, it is equipped with two
Mutually independent brake circuit, in the exemplary embodiment, each brake circuit provide diagonal reversed brake 18a extremely
18d is configured in X-shaped.On the one hand it is able to use brake pedal 10 and realizes that the operation of brake passes through system in known manner
Dynamic booster and tandem main cylinder apply brake pressure to two brake circuits independently of each other.It is prominent aobvious with thicker line in Fig. 1
Show the route thus acted on by pressure.The pressure that is generated by the instruction of the pressure gauge 20 that is indicated with symbol, also, addressing
In the case that unit has " ESP ", also pass through the pressure of pressure sensor (pressure/electric pressure converter) measurement generation.
In order to execute ABS function, different solenoid valves is provided, in known manner by using intermediate store reality
Existing brake force modulation.As is known, all the function is all the brake control base controlled by microprocessor
It is controlled in various vehicle parameters.
In order to increase brake pressure during ESC is run, furthermore optionally from corresponding brake circuit associated two
A pump 14a, 14b provide additional Fluid pressure to one or more brake 18a to 18d, this two pumps are electronic by sharing
Machine 16 drives, which can be activated by brak control unit (not shown), and also control the braking shown
The position of valve.
Therefore, pump 14a, 14b can influence brake pressure, can pass through the multiple switching valve (multi of entrance side
Changeover valve) 12 brake pressure is connected to expansion tank/master cylinder as reservoir, and can will in outlet side
Brake pressure is ultimately connected to brake 18a to 18d, wherein can be by solenoid valve each individually brake 18a extremely
18d adjusts pressure.In this configuration, the reverse flow in reservoir region is entered by check-valves prevention hydraulic fluid.
Such case is illustrated in Fig. 2, is intervened for the ESC to front-wheel.With low pressure route (the pump 14a of activation,
The entrance side of 14b) it is indicated with grey, and the route with over-voltage is slightly highlighted with runic.
It is such as shown in Fig. 2 by according to the method for the present invention, it is provided with comparison valve arrangement (comparable valve
Configuration), wherein all brakes in two circuits are preferably acted on by high pressure simultaneously as described above.
According to the available power of the drive motor 16 of pump 14a, 14b, the pressure to two brake circuits can be performed continuously
Power application, however, other circuits are all hydraulic connectings, so that every pump 14a or 14b is subjected to lower resistance herein.
As previously mentioned, passing through external control signal or the dish of vehicle maintenance menu to execute according to the method for the present invention
Single command activates pump such as 20 seconds designated time periods of 14a and 14b using common drive motor 16, so as to by this pressure
The high static pressure of such as about 200bar is accumulated in the component of the braking system acted on.
Exhaust valve (attached to be not shown in the figure) manually opened provided by the pipe end of any braking system in principle
Be not turned on according to the procedure of the present invention, so as to place near the steps program can in the case where no manual intervention or monitoring it is automatic
It carries out.
The improvement of the exhaust degree of braking system may be implemented it has been shown that by the method in a series of experiments, this be
In long-term basis.
Its effect is found out from the chart of Fig. 3.The figure shows the comparison of pedal travel (in any unit), for
It is required for the specific brake force of many vehicles and relevant standard deviation.As can be seen that executing according to this hair
Before bright method (left side) and (the right) after execution this method, measured value is significantly different.That is, pedal travel is overall more
It is small, and it is subjected to the fluctuation significantly reduced.
The positive related effect of this method is, while testing the air-tightness of braking system, the reason is that any leakage
It all will be apparent at this pressure.
Claims (14)
1. a kind of method that at least part for the brake fluid system to vehicle is vented, braking system include at least one
Brake circuit can selectively increase pressure in the circuit by the pump installation (14a, 14b) of at least one motor drive,
It is characterized in that, giving the partial brake system that will be vented using pump installation (14a, 14b) in the case where not opening exhaust valve
The step of increasing the period that pressure is specified, the specified period depend on corresponding pump installation and are fighting described in closing
Continuous load ability in the pumping procedure of exhaust valve, the increased pressure make remaining gas dissolution in the braking system
In brake fluid.
2. the method according to claim 1, wherein at least one pump installation (14a, 14b) is by motor drive,
The pump installation is equipped with to be used for during carrying out brake regulation by electronic Dynamic Ride Control System in braking system
Cumulative stress.
3. the method according to claim 1, wherein being applied more than the pressure of 50bar using as increased pressure.
4. the method according to claim 1, wherein being applied more than the pressure of 100bar using as increased pressure
Power.
5. the method according to claim 1, wherein applying 180 to 200bar pressure using as increased pressure
Power.
6. the method according to claim 1, wherein it is specific to apply increased pressure in stationary vehicle
Period, the period are more than or equal to 5 seconds and to be less than 2 minutes.
7. the method according to claim 1, wherein it is specific to apply increased pressure in stationary vehicle
Period, the period are more than or equal to 10 seconds and to be less than 1 minute.
8. the method according to claim 1, wherein it is specific to apply increased pressure in stationary vehicle
Period, the period are 10 to 20 seconds.
9. the method according to claim 1, wherein for can by means of at least one pump installation (14a,
14b) and by the partial brake system being placed under increased pressure that suitably positions of the control valve of braking system implement
Exhaust process.
10. the method according to claim 1, wherein exhaust process to braking system for the first time fill it is hydraulic
It is carried out soon after fluid.
11. the method according to claim 1, wherein production of the exhaust process in the vehicle comprising braking system
It carries out in the process.
12. the method according to claim 1, wherein vehicle includes in electronic brake controller, with vehicle
CAN bus connection, and at least one pump installation (14a, 14b) and multiple braking system control valves can be controlled, wherein by
In the peripheral control unit for being connected to brake monitor via CAN bus, cause exhaust process, starting at least one by following steps
The control valve of a pump installation (14a, 14b) and setting braking system is so as to tired in the partial brake system for being able to maintain pressure
The required pump pressure of product.
13. according to the method for claim 12, which is characterized in that the maintenance menu being able to use in vehicle comes selectively
Or extraly cause exhaust process.
14. a kind of brake system controller for the vehicle with braking system, which has dynamic Driving control
System and at least one pump installation (14a, 14b) for dynamic Ride Control System, which is characterized in that controller can drive
At least one pump installation (14a, 14b), and the valve being provided in braking system can be controlled, so as at least one pump installation
(14a, 14b) can apply pressure at least part of braking system, wherein the controller design is to activate at least one
Pump installation (14a, 14b) the specified period, and in the case where not opening exhaust valve at least part of braking system
The pressure of middle cumulative rises, the specified period depend on the pump for the exhaust valve that corresponding pump installation is closed in confrontation
Continuous load ability during sending, the increased pressure make remaining gas in the braking system be dissolved in brake fluid.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012221209.4 | 2012-11-20 | ||
| DE102012221209 | 2012-11-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103832426A CN103832426A (en) | 2014-06-04 |
| CN103832426B true CN103832426B (en) | 2019-09-17 |
Family
ID=50625811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310586936.2A Active CN103832426B (en) | 2012-11-20 | 2013-11-20 | The method and brake system controller for being vented hydraulic vehicle brake system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103832426B (en) |
| DE (1) | DE102013223363A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104228809B (en) * | 2014-09-18 | 2015-09-09 | 吉林大学 | Be applied to exhaust gear and the control method of hydraulic braking system for automobile |
| DE102016219073B4 (en) | 2015-10-14 | 2023-01-05 | Ford Global Technologies, Llc | Wheel brake cylinder residual air monitor and associated procedure |
| DE102015224888A1 (en) * | 2015-12-10 | 2017-06-14 | Volkswagen Aktiengesellschaft | Method and electronic service device for effecting the bleeding of a vehicle brake system |
| CN106080576B (en) * | 2016-06-07 | 2019-12-31 | 上汽通用汽车有限公司 | Vacuumizing and filling method and anti-lock braking system |
| DE102018221079A1 (en) * | 2018-12-06 | 2020-06-10 | Robert Bosch Gmbh | Method for testing an electronically slip-controllable brake system for a motor vehicle for existing faults |
| CN112477836B (en) * | 2020-11-27 | 2022-03-18 | 东风汽车集团有限公司 | Brake system liquid feeding and exhausting control method based on electronic stability control system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1244162A (en) * | 1996-12-23 | 2000-02-09 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Method for bubble-free filling of brake fluid into a hydraulic motor vehicle braking system |
| US6196365B1 (en) * | 1998-07-01 | 2001-03-06 | Nissin Kogyo Co., Ltd. | Braking hydraulic pressure control apparatus and method of use for vehicle |
| DE10347789A1 (en) * | 2003-10-14 | 2005-05-12 | Bosch Gmbh Robert | Method for venting a hydraulic brake system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19603867A1 (en) | 1996-02-03 | 1997-08-07 | Bosch Gmbh Robert | Motor vehicle brake monitoring method |
| US20040040807A1 (en) * | 2000-11-23 | 2004-03-04 | Jochen Burgdorf | Method for operating an electronically controllable brake actuation system, and electronically controlable brake actuation system |
| DE10103229B4 (en) | 2001-01-25 | 2004-08-05 | Robert Bosch Gmbh | Hydraulic vehicle brake system and method for the detection of gas bubbles in a hydraulic vehicle brake system |
| US20060192426A1 (en) * | 2002-08-14 | 2006-08-31 | Martin Baechle | Method for bleeding and refilling an electrohydraulic brake system |
| DE102009024441A1 (en) | 2009-06-10 | 2010-12-16 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Bleeding method for a closed hydraulic system uses a hydraulic fluid to control/trigger a slave cylinder without any flow-back by applying pressure and low-frequency vibration to the hydraulic fluid |
-
2013
- 2013-11-15 DE DE201310223363 patent/DE102013223363A1/en active Pending
- 2013-11-20 CN CN201310586936.2A patent/CN103832426B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1244162A (en) * | 1996-12-23 | 2000-02-09 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Method for bubble-free filling of brake fluid into a hydraulic motor vehicle braking system |
| US6196365B1 (en) * | 1998-07-01 | 2001-03-06 | Nissin Kogyo Co., Ltd. | Braking hydraulic pressure control apparatus and method of use for vehicle |
| DE10347789A1 (en) * | 2003-10-14 | 2005-05-12 | Bosch Gmbh Robert | Method for venting a hydraulic brake system |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102013223363A1 (en) | 2014-05-22 |
| CN103832426A (en) | 2014-06-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103832426B (en) | The method and brake system controller for being vented hydraulic vehicle brake system | |
| KR101973892B1 (en) | Brake device | |
| WO2018003539A1 (en) | Brake device and method for detecting fluid leakage in brake device | |
| JP4618169B2 (en) | Brake control device for vehicle | |
| CN104071141B (en) | Method for the braking system of vehicle and for running the braking system | |
| JP5624216B2 (en) | Method for adjusting the clamping force applied by a parking brake, a closed-loop or open-loop controller for carrying out the method and a vehicle parking brake comprising such a controller | |
| JP7329606B2 (en) | Electro-hydraulic powered vehicle braking system | |
| KR20120024640A (en) | Slip-controlled hydraulic vehicle brake system | |
| JP2015020443A (en) | Electric brake device | |
| US20180194332A1 (en) | Brake Control Apparatus and Brake System | |
| WO2017068968A1 (en) | Brake control device | |
| US10710569B2 (en) | Method for bleeding a vehicle brake system | |
| US11834019B2 (en) | Hydraulic braking system having an electronic control unit and method for operating same | |
| CN101054085B (en) | Braking anti-lock system with running braking function | |
| US20180273007A1 (en) | Braking control device for vehicle | |
| KR20090093137A (en) | A brake system for a vehicle and the control method thereof | |
| CN108602505B (en) | Method for detecting and compensating for leaks in a brake system | |
| CN105035046B (en) | Braking device for vehicle and its braking method | |
| KR100845904B1 (en) | Model based fault detection method of hydraulic unit of electronic control brake system | |
| JP2007237777A (en) | Brake control device for vehicle | |
| WO2019230547A1 (en) | Brake control device and method for detecting malfunction in brake control device | |
| KR102231112B1 (en) | Active hydraulic booster system in vehice and control method thereof | |
| US7925410B2 (en) | Speed control strategy | |
| US9630603B2 (en) | Braking device for vehicle | |
| JP2015231821A (en) | Vehicular brake system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |