DE10348829A1 - Brake device for a motor vehicle has a brake disk, a brake drum, two brake linings and a device for detecting a tension force acting on the brake linings as the vehicle's brake is operated - Google Patents
Brake device for a motor vehicle has a brake disk, a brake drum, two brake linings and a device for detecting a tension force acting on the brake linings as the vehicle's brake is operated Download PDFInfo
- Publication number
- DE10348829A1 DE10348829A1 DE10348829A DE10348829A DE10348829A1 DE 10348829 A1 DE10348829 A1 DE 10348829A1 DE 10348829 A DE10348829 A DE 10348829A DE 10348829 A DE10348829 A DE 10348829A DE 10348829 A1 DE10348829 A1 DE 10348829A1
- Authority
- DE
- Germany
- Prior art keywords
- brake
- motor vehicle
- friction layer
- clamping force
- linings
- 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.)
- Withdrawn
Links
- 238000012545 processing Methods 0.000 claims description 5
- 238000011156 evaluation Methods 0.000 claims description 3
- 230000032683 aging Effects 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/22—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers
- G01L5/225—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers to foot actuated controls, e.g. brake pedals
-
- 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
- B60T8/52—Torque sensing, i.e. wherein the braking action is controlled by forces producing or tending to produce a twisting or rotating motion on a braked rotating member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D2066/001—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D2066/005—Force, torque, stress or strain
Abstract
Description
Die Erfindung betrifft eine Kraftfahrzeugbremse mit mindestens einer Bremsscheibe oder mindestens einer Bremstrommel, mit mindestens zwei Bremsbelägen sowie mit einer Einrichtung zum Ermitteln einer bei der Betätigung der Kraftfahrzeugbremse auf die Bremsbeläge einwirkenden Spannkraft, wobei die Bremsbeläge eine Trägerplatte sowie eine mit der Bremsscheibe oder der Bremstrommel in Eingriff bringbare Reibschicht aufweisen.The The invention relates to a motor vehicle brake with at least one Brake disc or at least one brake drum, with at least two brake pads and with a device for determining a when operating the Motor vehicle brake acting on the brake pads, taking the brake pads a carrier plate as well as one with the brake disc or the brake drum in engagement have bringable friction layer.
Die Ermittlung der Spannkraft oder einer die Spannkraft repräsentierenden Größe ist insbesondere bei elektronisch regelbaren Bremssystemen sehr wichtig. Bei konventionellen hydraulischen oder elektrohydraulischen Bremssystemen werden zu diesem Zweck den einzelnen Radbremsen zugeordnete Drucksensoren verwendet, die die in den Radbremsen eingesteuerten Drücke erfassen und aus deren Ausgangssignalen die gewünschten Spannkraftwerte abgeleitet werden können.The Determination of the clamping force or one that represents the clamping force Size is special very important for electronically controllable braking systems. With conventional hydraulic or electrohydraulic brake systems become too pressure sensors assigned to the individual wheel brakes for this purpose used that detect the pressures controlled in the wheel brakes and derived the desired clamping force values from their output signals can be.
Die
Ermittlung der Spannkraft bei elektromechanischen Bremssystemen
erfolgt üblicherweise mittels
Spannkraftsensoren, die in den Aktuatoren integriert sind. So ist
beispielsweise aus der
Es ist daher Aufgabe der vorliegenden Erfindung, eine Kraftfahrzeugbremse der eingangs genannten Gattung vorzuschlagen, bei der die Zuspannkraftmessungen mit ausreichend hoher Messgenauigkeit mit niedrigem Kostenaufwand durchgeführt werden können.It is therefore an object of the present invention, a motor vehicle brake to propose the type mentioned at the beginning, in which the clamping force measurements with sufficiently high measurement accuracy at low cost carried out can be.
Eine erste erfindungsgemäße Lösung der Aufgabe besteht darin, dass die Einrichtung zum Ermitteln der Spannkraft derart ausgebildet ist, dass sie bei der Betätigung der Kraftfahrzeugbremse auftretende Änderungen des elektrischen Widerstandes der Reibschicht erfasst und zur Bestimmung der Spannkraft auswertet.A first solution of the task according to the invention is that the device to determine the tension is designed such that when the motor vehicle brake is actuated changes that occur of the electrical resistance of the friction layer and determined evaluates the elasticity.
Eine zweite erfindungsgemäße Lösung der Aufgabe, die insbesondere bei Bremssystemen verwendet werden kann, deren Bremsbeläge eine zwischen Trägerplatte und Reibschicht angeordnete Verbindungsschicht aufweisen, besteht darin, dass die Einrichtung zum Ermitteln der Spannkraft derart ausgebildet ist, dass sie bei der Betätigung der Kraftfahrzeugbremse auftretende Änderungen des elektrischen Widerstandes der Verbindungsschicht erfasst und zur Bestimmung der Spannkraft auswertet.A second solution of the task according to the invention, which can be used in particular in brake systems whose Brake pads one between carrier plate and friction layer arranged connecting layer, there is in that the device for determining the clamping force is designed in this way is that when they operate the motor vehicle brake changes in the electrical Resistance of the connection layer is recorded and used to determine the Tension evaluates.
Bei einer dritten Lösung der vorhin gestellten Aufgabe ist erfindungsgemäß vorgesehen, dass die Einrichtung zum Ermitteln der Spannkraft durch ein in der Reibschicht integriertes kraftsensierendes Element gebildet ist, das bei der Betätigung der Kraftfahrzeugbremse ein elektrisches Signal liefert, das zur Bestimmung der Spannkraft ausgewertet wird.at a third solution According to the invention, the task set out above is that the device to determine the clamping force by an integrated in the friction layer force-sensing element is formed, which when operating the Motor vehicle brake provides an electrical signal for determination the clamping force is evaluated.
Schließlich besteht eine vierte Lösung der Aufgabe darin, dass die Einrichtung zum Ermitteln der Spannkraft durch ein in der Trägerplatte integriertes kraftsensierendes Element gebildet ist, das bei der Betätigung der Kraftfahrzeugbremse ein elektrisches Signal liefert, das zur Bestimmung der Spannkraft ausgewertet wird.Finally there is a fourth solution the task is that the device for determining the tension by a in the carrier plate Integrated force-sensing element is formed, which in the activity the motor vehicle brake provides an electrical signal that for Determination of the clamping force is evaluated.
Eine vorteilhafte Weiterbildung der ersten sowie der zweiten Lösung sieht vor, dass die ermittelten Widerstandswerte mit einem gemessenen bzw. errechneten Temperaturwert abgeglichen werden, der von einem temperaturmessenden Element zur Ermittlung der Temperatur der Reibschicht oder der Verbindungsschicht geliefert wird. Dabei ist es besonders vorteilhaft, wenn die Reibschicht oder die Verbindungsschicht an eine elektrische Aufbereitungsschaltung angeschlossen ist, deren Ausgangssignal zusammen mit dem den Temperaturwert repräsentierenden Ausgangssignal zur Auswertung einem Mikroprozessor zugeführt wird.A sees advantageous development of the first and the second solution before that the determined resistance values with a measured or calculated temperature value can be compared by a temperature-measuring element for determining the temperature of the friction layer or the connection layer is supplied. It is special advantageous if the friction layer or the connecting layer on an electrical processing circuit is connected, the Output signal together with the temperature value Output signal for evaluation is fed to a microprocessor.
Eine andere vorteilhafte Ausführung des Erfindungsgegenstandes besteht darin, dass Mittel zur kontinuierlichen Überwachung des elektrischen Widerstandes der Reibschicht oder der Verbindungsschicht bei einer festgelegten Temperatur vorgesehen sind, deren Messwerte zur Erkennung von Alterungserscheinungen herangezogen und ggf. durch im Mikroprozessor abgelegte Daten kompensiert werden.A other advantageous embodiment The subject of the invention is that means for continuous monitoring the electrical resistance of the friction layer or the connection layer are provided at a fixed temperature, their measured values used to detect signs of aging and, if necessary, by im Microprocessor stored data can be compensated.
Schließlich sind bei einer weiteren Ausführungsform der Erfindung Mittel zur Erfassung des Verschleißes der Reibschicht vorgesehen, deren Messwerte durch im Mikroprozessor abgelegte Daten kompensiert werden.Finally are in a further embodiment the invention provides means for detecting the wear of the friction layer, whose measured values are compensated by data stored in the microprocessor become.
Die Erfindung wird anhand von drei Ausführungsbeispielen in der nachfolgenden Beschreibung im Zusammenhang mit der beiliegenden Zeichnung näher erläutert, wobei für einander entsprechende Teile die gleichen Bezugszeichen verwendet werden. In der Zeichnung zeigen:The invention is based on three Ausfü Rungsbeispiele explained in more detail in the following description in connection with the accompanying drawings, wherein the same reference numerals are used for corresponding parts. The drawing shows:
Der
in
Die
in
Alternative
Ausführungen
des Erfindungsgegenstandes sind in
Bei
der in
Claims (8)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10348829A DE10348829A1 (en) | 2003-04-08 | 2003-10-21 | Brake device for a motor vehicle has a brake disk, a brake drum, two brake linings and a device for detecting a tension force acting on the brake linings as the vehicle's brake is operated |
PCT/EP2004/050530 WO2005015045A1 (en) | 2003-08-06 | 2004-04-15 | Motor vehicle brake system |
US10/567,301 US20060254868A1 (en) | 2003-08-06 | 2004-04-15 | Motor vehicle brake system |
JP2006522337A JP2007501363A (en) | 2003-08-06 | 2004-04-15 | Car brake |
EP04727568A EP1654473B1 (en) | 2003-08-06 | 2004-04-15 | Motor vehicle brake system |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10315968.1 | 2003-04-08 | ||
DE10315968 | 2003-04-08 | ||
DE10335926.5 | 2003-08-06 | ||
DE10335926 | 2003-08-06 | ||
DE10348829A DE10348829A1 (en) | 2003-04-08 | 2003-10-21 | Brake device for a motor vehicle has a brake disk, a brake drum, two brake linings and a device for detecting a tension force acting on the brake linings as the vehicle's brake is operated |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10348829A1 true DE10348829A1 (en) | 2004-10-21 |
Family
ID=33030920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10348829A Withdrawn DE10348829A1 (en) | 2003-04-08 | 2003-10-21 | Brake device for a motor vehicle has a brake disk, a brake drum, two brake linings and a device for detecting a tension force acting on the brake linings as the vehicle's brake is operated |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10348829A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1923592A1 (en) * | 2006-11-14 | 2008-05-21 | TMD Friction Services GmbH | Brake or gear lining with capacitative force sensor |
DE102005002523B4 (en) * | 2005-01-19 | 2015-11-19 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Device for measuring the force in brake actuators |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19640995A1 (en) * | 1996-10-04 | 1998-04-16 | Continental Ag | Electric braking system for a motor vehicle |
-
2003
- 2003-10-21 DE DE10348829A patent/DE10348829A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19640995A1 (en) * | 1996-10-04 | 1998-04-16 | Continental Ag | Electric braking system for a motor vehicle |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005002523B4 (en) * | 2005-01-19 | 2015-11-19 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Device for measuring the force in brake actuators |
EP1923592A1 (en) * | 2006-11-14 | 2008-05-21 | TMD Friction Services GmbH | Brake or gear lining with capacitative force sensor |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8110 | Request for examination paragraph 44 | ||
R120 | Application withdrawn or ip right abandoned | ||
R120 | Application withdrawn or ip right abandoned |
Effective date: 20121117 |