DE102010022493B4 - Brake system with a brake booster and method for using a corresponding brake system - Google Patents
Brake system with a brake booster and method for using a corresponding brake system Download PDFInfo
- Publication number
- DE102010022493B4 DE102010022493B4 DE102010022493.6A DE102010022493A DE102010022493B4 DE 102010022493 B4 DE102010022493 B4 DE 102010022493B4 DE 102010022493 A DE102010022493 A DE 102010022493A DE 102010022493 B4 DE102010022493 B4 DE 102010022493B4
- Authority
- DE
- Germany
- Prior art keywords
- brake
- pressure
- storage chamber
- drive
- piston
- 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.)
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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
- 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
- B60T13/74—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 electrical assistance or drive
- B60T13/745—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 electrical assistance or drive acting on a hydraulic system, e.g. a master cylinder
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/4072—Systems in which a driver input signal is used as a control signal for the additional fluid circuit which is normally used for braking
- B60T8/4077—Systems in which the booster is used as an auxiliary pressure source
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Regulating Braking Force (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
Bremssystem mit einem Bremskraftverstärker (1) mit Antrieb (11), bei dem mittels mindestens einem schaltbaren Ventil (7, 15) Druckmittel aus mindestens einer Radbremse (10) oder mindestens einem Bremskreis in eine Speicherkammer (8) leitbar ist, wobei eine Steuerungseinrichtung zumindest das mindestens eine schaltbare Ventil (7, 15) steuert, wobei im Störungsfalle des Bremskraftverstärkers (1), wenn dessen Antrieb (11) oder das zwischen Antrieb (11) und Kolben des Hauptbremszylinders (4) zwischengeschaltete Getriebe blockiert ist, die mindestens eine Speicherkammer (8) zur Aufnahme von Druckmittel aus der Radbremse bzw. dem Bremskreis und somit zum Druckabbau in mindestens einer Radbremse dient, dadurch gekennzeichnet, dass die Speicherkammer (8) die für eine ABS- und/oder Fahrstabilitäts-Regelungs-Funktion vorgesehene Speicherkammer ist und die Speicherkammer (8) eine geschlossene Kolbenspeicherkammer mit einem durch Federkraft vorgespannten Kolben ist.Braking system with a brake booster (1) with drive (11), wherein by means of at least one switchable valve (7, 15) pressure medium from at least one wheel brake (10) or at least one brake circuit in a storage chamber (8) can be conducted, wherein a control device at least the at least one switchable valve (7, 15) controls, wherein in case of failure of the brake booster (1), when the drive (11) or between the drive (11) and piston of the master cylinder (4) interposed gear is blocked, the at least one storage chamber (8) for receiving pressure medium from the wheel brake or the brake circuit and thus serves for pressure reduction in at least one wheel brake, characterized in that the storage chamber (8) is provided for an ABS and / or driving stability control function memory chamber and the storage chamber (8) is a closed piston storage chamber with a spring-biased piston.
Description
Die Erfindung betrifft ein Bremssystem gemäß dem Oberbegriff des Anspruchs 1 sowie ein entsprechendes Verfahren.The invention relates to a brake system according to the preamble of
Stand der TechnikState of the art
Wegen der höheren Funktionalität und auch des geringeren Einbauvolumens werden zukünftig verstärkt hydraulische Bremskraftverstärker (BKV) und insbesondere elektromechanische Bremskraftverstärker zum Einsatz kommen. Bei Bremsanlagen mit elektromechanischen Bremskraftverstärker unterscheidet man zwischen Ausführungen ohne Wegsimulator wie sie z. B. aus
Bei o. g. Bremskraftverstärkerausführungen besteht ein gravierendes Sicherheitsrisiko, wenn beim Druckabbau bei Zurücknahme der Pedalkraft und Pedalweg der Antrieb des Bremskraftverstärkers klemmt und kein Druckabbau mehr möglich ist. Dies führt dazu, dass bei entsprechendem Druckniveau das Fahrzeug auf der Straße stehen bleibt und durch die Leistung des Motors nicht mehr bewegt werden kann. Ähnliches kann auch bei der elektrischen Servolenkung eintreten, wenn der Motor oder das Getriebe klemmt. Um dies zu verhindern, werden aufwändige konstruktive Maßnahmen, sowie Maßnahmen zur Qualitätssicherung eingesetzt, um diesen Fall zu vermeiden.At o. G. Brake booster designs pose a serious safety risk if, when the pressure is released when the pedal force and pedal travel are withdrawn, the drive of the brake booster jams and no further pressure reduction is possible. This means that at the appropriate pressure level, the vehicle stops on the road and can not be moved by the power of the engine. The same can occur with the electric power steering when the engine or the transmission is stuck. To prevent this, elaborate design measures and quality assurance measures are used to avoid this case.
Die
Die
Aufgabe der Erfindung ist es, eine kostengünstige und wirksame Maßnahme für diesen Fehlerfall bei einer Bremsanlage bereitzustellen.The object of the invention is to provide a cost-effective and effective measure for this fault in a brake system.
Die Aufgabe wird durch das Bremssystem nach Anspruch 1 sowie durch das Verfahren nach Anspruch 6 gelöst.The object is achieved by the braking system according to
Die Lösung der Aufgabe besteht darin, eine Speicherkammer zum Druckabbau in mindestens einer Radbremse zu verwenden. Hierbei können die oft schon vorhandenen Speicherkammern des konventionellen ABS- oder ESP-Systems verwendet werden. Bei diesen Systemen wird beim Druckabbau für die ABS-Regelung durch kurzzeitiges Öffnen des Auslassventils Druckmittel in die Speicherkammer geleitet, um dadurch ein Blockieren des betreffenden Rades zu verhindern. Das entsprechende Volumen wird durch die Rückförderpumpe in den Bremskreis und Hauptbremszylinder zurück gepumpt.The solution of the problem is to use a storage chamber for reducing pressure in at least one wheel brake. Here, the often existing storage chambers of the conventional ABS or ESP system can be used. In these systems, when pressure reduction for the ABS control by brief opening of the exhaust valve pressure medium is passed into the storage chamber, thereby preventing blocking of the relevant wheel. The corresponding volume is pumped back into the brake circuit and master cylinder by the return pump.
Im beschriebenen Fehlerfall mit blockierendem Antrieb wird dieser Pfad ebenso genutzt. Sofern sich der Druck in dem Bremskreis nach der Zurücknahme der Pedalkraft oder des Pedalweges nicht reduziert, was mit entsprechenden Sensoren gemessen wird, wird erfindungsgemäß das Auslassventil längere Zeit geöffnet, damit das Druckmittel in die Speicherkammer gelangt. gleichzeitig kann auch die Rückförderpumpe eingeschaltet werden.In the described error case with blocking drive this path is also used. Unless the pressure in the brake circuit after the withdrawal of the pedal force or the pedal travel is not reduced, which is measured with corresponding sensors, the exhaust valve is opened according to the invention for a long time, so that the pressure medium enters the storage chamber. At the same time, the return pump can be switched on.
Der hohe Druck, welcher nach dem Öffnen des Auslassventils durch die Rückförderpumpe entsteht, kann durchaus die HZ-Kolben des Bremskraftverstärkers trotz klemmenden Antriebes zurück drängen, was über die Messung von Druck oder Positionsänderung des Antriebes festgestellt werden kann.The high pressure, which arises after opening the exhaust valve by the return pump, can certainly push back the HZ pistons of the brake booster despite jamming drive, which can be determined by the measurement of pressure or change in position of the drive.
Abhängig vom Druckniveau beim Auftreten des Klemmens kann durch diese Lösung der Druck ganz oder auf ein niedriges Niveau reduziert werden, so dass der Fahrer ggf. mit verringerter Geschwindigkeit das Fahrzeug aus der Gefahrenzone bewegen kann.Depending on the pressure level at the time of the occurrence of the jamming, this solution can reduce the pressure completely or to a low level so that the driver can, if necessary, move the vehicle out of the danger zone at reduced speed.
Die vorbeschriebene Verwendung einer Speicherkammer ist zudem einsetzbar bei einem Bremskraftverstärker mit Wegsimulator und Speicherkammer, wie er aus der
Vorteilhaft ist der Mehraufwand für die erfindungsgemäße Lösung des Bremsdruckabbaus im Fehlerfall des Antriebs oder Getriebes des Bremskraftverstärkers sehr gering. Sofern eine Speicherkammer vorhanden ist, muss lediglich die Software konventioneller ABS- oder EPS-Systeme angepasst werden.Advantageously, the extra effort for the inventive solution of the brake pressure reduction in case of failure of the drive or transmission of the brake booster is very low. If a storage chamber is available, only the software of conventional ABS or EPS systems has to be adapted.
Nachfolgend wird die erfindungsgemäße Verwendung mindestens einer Speicherkammer näher erläutert.The use of at least one storage chamber according to the invention will be explained in more detail below.
Es zeigen:Show it:
Die
Im oberen Bildteil ist der getrennt angeordnete Bremskraftverstärker
Tritt nun der Fehlerfall mit blockiertem Antrieb ein, so wird zur Druckreduzierung das Pedal
Ist die Blockierung so stark, dass die Rückförderpumpe
Wenn kein Druckgeber im Radkreis eingebaut ist, so wird im Fehlerfall solange das Auslassventil
Die
Wie beim Bremssystem der
Erfolgt bei den Bremssystemen entsprechend der
Wie bereits erläutert, ist der Mehraufwand bei der erfindungsgemäßen Lösung für eine wirksame Abhilfe für den kritischen Fehlerfall sehr gering.As already explained, the extra effort in the inventive solution for an effective remedy for the critical error case is very low.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Bremskraftverstärker (BKV)Brake booster (BKV)
- 22
- Bremspedalbrake pedal
- 33
- Pedalwegschalter/SensorPedalwegschalter / Sensor
- 44
- Tandemhauptzylinder (THZ)Tandem master cylinder (THZ)
- 55
- HCUHCU
- 66
- RückförderpumpeReturn pump
- 77
- A-VentilA valve
- 88th
- Speicherkammerstorage chamber
- 99
- Speicherkammerschalter/SensorStorage chamber switch / sensor
- 1010
- Bremssattelcaliper
- 10a10a
- Bremskolbenbrake pistons
- 1111
- E-MotorE-Motor
- 1212
- Pedalstangepedal rod
- 1313
- DrehwinkelgeberRotary encoder
- 1414
- Speicherkammer MVStorage chamber MV
- 1515
- Druckgeberthruster
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE102010022493.6A DE102010022493B4 (en) | 2010-06-02 | 2010-06-02 | Brake system with a brake booster and method for using a corresponding brake system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010022493.6A DE102010022493B4 (en) | 2010-06-02 | 2010-06-02 | Brake system with a brake booster and method for using a corresponding brake system |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102010022493A1 DE102010022493A1 (en) | 2011-12-08 |
DE102010022493B4 true DE102010022493B4 (en) | 2016-11-17 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102010022493.6A Active DE102010022493B4 (en) | 2010-06-02 | 2010-06-02 | Brake system with a brake booster and method for using a corresponding brake system |
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Country | Link |
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DE (1) | DE102010022493B4 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011101066A1 (en) | 2011-05-10 | 2012-11-15 | Lucas Automotive Gmbh | Hydraulic vehicle brake system with electromechanical actuator |
DE102012002791A1 (en) * | 2012-02-15 | 2013-08-22 | Ipgate Ag | Brake operation device for motor vehicle, has valve unit of wheel brake associated with outlet switching valve that is operated in multiplex mode, and electric motor-driven booster device actuating plunger |
DE102012025291A1 (en) | 2012-12-21 | 2014-06-26 | Lucas Automotive Gmbh | Electrohydraulic vehicle brake system and method for operating the same |
JP7249729B2 (en) * | 2017-06-27 | 2023-03-31 | 日立Astemo株式会社 | brake device |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3317629A1 (en) * | 1983-05-14 | 1984-11-15 | Alfred Teves Gmbh, 6000 Frankfurt | METHOD FOR CONTROLLING A SLIP-CONTROLLED BRAKE SYSTEM AND DEVICE FOR IMPLEMENTING THE METHOD |
DE10318401A1 (en) * | 2002-04-24 | 2003-12-11 | Advics Co | Motor-driven vehicle brake device |
DE102004050103A1 (en) * | 2003-06-18 | 2006-04-27 | Volkswagen Ag | Electromechanical brake booster with contact damping for automobiles has spring and/or damping element provided between spindle screw and driver of piston rod whereby contact area between them is made elastic and/or is dampened |
DE102005018649A1 (en) * | 2005-04-21 | 2006-10-26 | Gerber, Wolfram | Brake system with electric motor-driven piston-cylinder system |
DE102006050277A1 (en) * | 2006-10-23 | 2008-04-30 | Ipgate Ag | Brake system has first piston element adjustable via spindle and rotor drive directly or via gearing, and second piston element is adjustable directly or via gearing of brake operating pedal |
DE102007062839A1 (en) * | 2007-12-21 | 2009-06-25 | Ipgate Ag | Brake assembly for vehicle, has electromotive driving unit for brake booster support with piston, where handling unit is provided over supply line, which is connected with air brake pipe |
WO2010088920A1 (en) * | 2009-02-03 | 2010-08-12 | Ipgate Ag | Brake system without path simulator |
DE102009043484A1 (en) * | 2009-09-30 | 2011-03-31 | Ipgate Ag | Brake system for motor vehicle, has wheel brake or brake circuit arranged to fluid storage, where storage chamber is alternatively connectable over adjustable storage valve with pressure pipe |
DE102009055721A1 (en) * | 2009-11-26 | 2011-06-01 | Ipgate Ag | Brake system with memory device with multiple function |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008051316A1 (en) | 2008-08-14 | 2010-02-18 | Ipgate Ag | Hydraulic brake system e.g. electro-hydraulic brake system, for vehicle, has main brake cylinder with working chamber connected to wheel brakes, and brake pistons adjusted by low pressure in hydraulic lines to produce brake clearance |
DE102009004484A1 (en) | 2009-01-09 | 2010-07-15 | Diana Mayer & Grammelspacher Gmbh & Co. Kg | Compressed air gun |
-
2010
- 2010-06-02 DE DE102010022493.6A patent/DE102010022493B4/en active Active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3317629A1 (en) * | 1983-05-14 | 1984-11-15 | Alfred Teves Gmbh, 6000 Frankfurt | METHOD FOR CONTROLLING A SLIP-CONTROLLED BRAKE SYSTEM AND DEVICE FOR IMPLEMENTING THE METHOD |
DE10318401A1 (en) * | 2002-04-24 | 2003-12-11 | Advics Co | Motor-driven vehicle brake device |
DE102004050103A1 (en) * | 2003-06-18 | 2006-04-27 | Volkswagen Ag | Electromechanical brake booster with contact damping for automobiles has spring and/or damping element provided between spindle screw and driver of piston rod whereby contact area between them is made elastic and/or is dampened |
DE102005018649A1 (en) * | 2005-04-21 | 2006-10-26 | Gerber, Wolfram | Brake system with electric motor-driven piston-cylinder system |
DE102006050277A1 (en) * | 2006-10-23 | 2008-04-30 | Ipgate Ag | Brake system has first piston element adjustable via spindle and rotor drive directly or via gearing, and second piston element is adjustable directly or via gearing of brake operating pedal |
DE102007062839A1 (en) * | 2007-12-21 | 2009-06-25 | Ipgate Ag | Brake assembly for vehicle, has electromotive driving unit for brake booster support with piston, where handling unit is provided over supply line, which is connected with air brake pipe |
WO2010088920A1 (en) * | 2009-02-03 | 2010-08-12 | Ipgate Ag | Brake system without path simulator |
DE102009043484A1 (en) * | 2009-09-30 | 2011-03-31 | Ipgate Ag | Brake system for motor vehicle, has wheel brake or brake circuit arranged to fluid storage, where storage chamber is alternatively connectable over adjustable storage valve with pressure pipe |
DE102009055721A1 (en) * | 2009-11-26 | 2011-06-01 | Ipgate Ag | Brake system with memory device with multiple function |
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Publication number | Publication date |
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DE102010022493A1 (en) | 2011-12-08 |
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