DE102010048403A1 - External power brake assembly e.g. dual circuit external power brake assembly, for e.g. tractor, has valve arrangement producing braking action with higher braking pressure at front axle than at rear axle - Google Patents
External power brake assembly e.g. dual circuit external power brake assembly, for e.g. tractor, has valve arrangement producing braking action with higher braking pressure at front axle than at rear axle Download PDFInfo
- Publication number
- DE102010048403A1 DE102010048403A1 DE201010048403 DE102010048403A DE102010048403A1 DE 102010048403 A1 DE102010048403 A1 DE 102010048403A1 DE 201010048403 DE201010048403 DE 201010048403 DE 102010048403 A DE102010048403 A DE 102010048403A DE 102010048403 A1 DE102010048403 A1 DE 102010048403A1
- Authority
- DE
- Germany
- Prior art keywords
- brake
- power brake
- pressure
- valve
- power
- 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- Withdrawn
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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
- B60T13/10—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
- 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
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/176—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
- B60T8/1766—Proportioning of brake forces according to vehicle axle loads, e.g. front to rear of vehicle
-
- 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
- B60T8/26—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels
-
- 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
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Regulating Braking Force (AREA)
Abstract
Description
TECHNISCHES GEBIETTECHNICAL AREA
Die vorliegende Erfindung bezieht sich auf das Gebiet der Fahrzeugtechnik. Sie betrifft eine Fremdkraftbremsanlage gemäss dem Oberbegriff des Anspruchs 1, sowie ein Fahrzeug mit einer solchen Fremdkraftbremsanlage.The present invention relates to the field of vehicle technology. It relates to a power brake system according to the preamble of claim 1, as well as a vehicle with such a power brake system.
STAND DER TECHNIKSTATE OF THE ART
Fahrzeuge mit Fremdkraftbremsventilen sind seit langem bekannt (siehe z. B. die
Ein Fremdkraftbremsventil erzeugt einen zur Betätigungskraft proportionalen Bremsdruck. Mit diesem Bremsdruck werden im Regelfall alle Bremsen bzw. Bremsenscheiben der Fahrzeugbremsanlage ausgesteuert. Dieser Bremsdruck hat eine relativ hohe Druck Anstiegsrate. Die Folge davon ist ein unerwünschtes und für den Fahrer unangenehmes ruckartiges Ansprechen der Fahrzeugbremse. Das Fremdkraftbremsventil kann dabei vom Bremspedal direkt oder mittels einer Geber-Nehmerzylinder-Anordnung angesteuert werden. Bekannte Geber-Nehmerzylinder-Systeme sind allerdings noch schlechter dosierbar als direkt angesteuerte Ventile.A power brake valve generates a braking pressure proportional to the actuating force. With this brake pressure, all brakes or brake discs of the vehicle brake system are usually controlled. This brake pressure has a relatively high pressure increase rate. The consequence of this is an undesirable and uncomfortable for the driver jerky response of the vehicle brake. The power brake valve can be controlled by the brake pedal directly or by means of a donor-slave cylinder arrangement. However, known donor slave cylinder systems are even worse dosed than directly controlled valves.
Aus der Druckschrift
In der
Aus der Druckschrift
Die Druckschrift
DARSTELLUNG DER ERFINDUNGPRESENTATION OF THE INVENTION
Es ist daher eine Aufgabe der Erfindung, eine Fremdkraftbremsanlage für ein Fahrzeug zu schaffen, die mit einfachsten Mitteln ein weiches Anbremsen ermöglicht und leicht bei bestehenden Bremsanlagen nachgerüstet werden kann.It is therefore an object of the invention to provide a power brake system for a vehicle that allows a soft braking with the simplest means and can be easily retrofitted to existing braking systems.
Es ist weiterhin eine Aufgabe der Erfindung, ein Fahrzeug mit einer solchen Fremdkraftbremsanlage anzugeben.It is a further object of the invention to provide a vehicle with such a power brake system.
Diese und andere Aufgaben werden durch die Merkmale der Ansprüche 1 und 11 gelöst.These and other objects are achieved by the features of
Die erfindungsgemässe Fremdkraftbremsanlage ist für ein Fahrzeug vorgesehen, welches eine mit ersten hydraulisch betätigbaren Bremsen ausgestattete Vorderachse sowie eine mit zweiten hydraulisch betätigbaren Bremsen ausgestattete Hinterachse aufweist, wobei die ersten Bremsen über erste Bremsleitungen und die zweiten Bremsen über zweite Bremsleitungen durch ein Fremdkraftbremsventil angesteuert werden. Sie zeichnet sich dadurch aus, dass Mittel vorgesehen sind, welche bewirken, dass die Bremswirkung an einer der beiden Achsen bei einem höheren Bremsdruck einsetzt als an der anderen Achse.The inventive power brake system is provided for a vehicle having a front axle equipped with first hydraulically actuated brakes and a rear axle equipped with second hydraulically actuable brakes, wherein the first brakes are controlled via first brake lines and the second brakes via second brake lines through a power brake valve. It is characterized in that means are provided which cause the braking effect on one of the two axes used at a higher brake pressure than on the other axis.
Gemäss einer Ausgestaltung der Fremdkraftbremsanlage nach der Erfindung sind die Mittel so ausgebildet, dass die Bremswirkung an der Vorderachse bei einem höheren Bremsdruck einsetzt als an der Hinterachse.According to one embodiment of the power brake system according to the invention, the means are designed so that the braking effect on the front axle starts at a higher brake pressure than at the rear axle.
Insbesondere reduzieren die Mittel den auf die eine Achse wirkenden Bremsdruck gegenüber dem auf die andere Achse wirkenden Bremsdruck um eine vorgegebene Druckdifferenz.In particular, the means reduce the brake pressure acting on one axle relative to the brake pressure acting on the other axle by a predetermined pressure difference.
Vorzugsweise umfassen die Mittel eine druckreduzierende Ventilanordnung, welche zwischen Bremsventil und dem Bremsen der zugehörigen Achse angeordnet ist. Hierdurch lässt sich ein besonders einfacher Aufbau erreichen.Preferably, the means comprise a pressure-reducing valve arrangement which is arranged between the brake valve and the brake of the associated axle. This makes it possible to achieve a particularly simple structure.
Gemäss einer Weiterbildung dieser Ausgestaltung umfasst die druckreduzierende Ventilanordnung eine Antiparallelschaltung aus einem Differenzdruckregelventil und einem Umgehungsrückschlagventil. According to a development of this embodiment, the pressure-reducing valve arrangement comprises an anti-parallel connection of a differential pressure control valve and a bypass check valve.
Gemäss einer anderen Weiterbildung dieser Ausgestaltung umfasst die druckreduzierende Ventilanordnung eine Antiparallelschaltung aus einem Vorspann-Rückschlagventil und einem Rückschlagventil.According to another development of this embodiment, the pressure-reducing valve arrangement comprises an anti-parallel circuit of a bias check valve and a check valve.
Besonders platzsparend ist es dabei, wenn die druckreduzierende Ventilanordnung in das Bremsventil integriert ist.It is particularly space-saving when the pressure-reducing valve arrangement is integrated into the brake valve.
Eine andere Ausgestaltung der erfindungsgemässen Fremdkraftbremsanlage ist dadurch gekennzeichnet, dass die Fremdkraftbremsanlage als 2-Kreis-Anlage mit einem 2-Kreis-Fremdkraftbremsventil ausgebildet ist, und dass die Mittel in dem zur jeweiligen Achse gehörenden Bremskreis angeordnet sind.Another embodiment of the inventive power brake system is characterized in that the power brake system is designed as a 2-circuit system with a 2-circuit power brake valve, and that the means are arranged in the respective axis belonging to the brake circuit.
Eine wieder andere Ausgestaltung der Fremdkraftbremsanlage nach der Erfindung ist dadurch gekennzeichnet, dass die Fremdkraftbremsanlage als 1-Kreis-Anlage mit einem 1-Kreis-Fremdkraftbremsventil ausgebildet ist, und dass die Mittel in der zur jeweiligen Achse führenden Bremsleitung angeordnet sind.Yet another embodiment of the power brake system according to the invention is characterized in that the power brake system is designed as a 1-circuit system with a 1-circuit power brake valve, and that the means are arranged in the brake line leading to the respective axis.
Eine weitere Ausgestaltung der erfindungsgemässen Fremdkraftbremsanlage zeichnet sich dadurch aus, dass das Fremdkraftbremsventil über ein Bremspedal, insbesondere über einen Hauptbremszylinder betätigt wird.A further embodiment of the inventive power brake system is characterized in that the power-operated brake valve is actuated via a brake pedal, in particular via a master brake cylinder.
Das erfindungsgemässe Fahrzeug ist mit einer mit ersten hydraulisch betätigbaren Bremsen ausgestattete Vorderachse sowie einer mit zweiten hydraulisch betätigbaren Bremsen ausgestattete Hinterachse ausgerüstet. Es ist dadurch gekennzeichnet, dass die Bremsen Teil einer erfindungsgemässen Fremdkraftbremsanlage sind.The vehicle according to the invention is equipped with a front axle equipped with first hydraulically actuated brakes and a rear axle equipped with second hydraulically actuated brakes. It is characterized in that the brakes are part of a novel power brake system.
Gemäss einer Ausgestaltung der Erfindung ist das Fahrzeug ein Traktor.According to one embodiment of the invention, the vehicle is a tractor.
Gemäss einer anderen Ausgestaltung ist das Fahrzeug ein Fahrzeug für die Land- oder Forstwirtschaft.According to another embodiment, the vehicle is a vehicle for agriculture or forestry.
Gemäss einer noch anderen Ausgestaltung ist das Fahrzeug ein Bau- oder Kommunalfahrzeug.According to yet another embodiment, the vehicle is a construction or municipal vehicle.
KURZE ERLÄUTERUNG DER FIGURENBRIEF EXPLANATION OF THE FIGURES
Die Erfindung soll nachfolgend anhand von Ausführungsbeispielen im Zusammenhang mit der Zeichnung näher erläutert werden. Es zeigen:The invention will be explained in more detail with reference to embodiments in conjunction with the drawings. Show it:
WEGE ZUR AUSFÜHRUNG DER ERFINDUNGWAYS FOR CARRYING OUT THE INVENTION
Die Fremdkraftbremsanlage aus
Wesentlich für das mit der Erfindung erreichbare weiche Anbremsen ist im Ausführungsbeispiel der
Durch die beschriebene Konfiguration der Bremsanlage mit einer Ventilanordnung
Man kann auch anstelle der Ventilanordnung
Bei der 2-Kreis-Bremsanlage der
So wird die Dosierbarkeit der Fahrzeugbremsanlage erheblich verbessert.Thus, the meterability of the vehicle brake system is significantly improved.
In den
Bevorzugte Einsatzgebiete der erfindungsgemässen Fremdkraftbremsanlage sind: Traktoren, Fahrzeuge für die Land- oder Forstwirtschaft und Bau- oder Kommunalfahrzeuge.Preferred areas of application of the novel power brake system are: tractors, vehicles for agriculture or forestry and construction or municipal vehicles.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 1010
- Fahrzeugvehicle
- 1111
- Chassischassis
- 1212
- VorderachseFront
- 1313
- Hinterachserear axle
- 1414
- Lenkungsteering
- 15L, 15R15L, 15R
- Vorderradfront
- 16L, 16R16L, 16R
- Hinterradrear wheel
- 17L, 17R17L, 17R
- Bremse (Vorderrad)Brake (front wheel)
- 18L, 18R18L, 18R
- Bremse (Hinterrad)Brake (rear wheel)
- 19, 19', 2019, 19 ', 20
- Bremsleitungbrake line
- 2121
- HauptbremszylinderMaster Cylinder
- 2222
- Bremspedalbrake pedal
- 2323
- Hydrauliksteuerunghydraulic control
- 2424
- FremdkraftbremsventilPower brake valve
- 25–2725-27
- Druckspeicheraccumulator
- 28 28
- Tanktank
- 2929
- Druckzufuhrpressure feed
- 30, 30'30, 30 '
- Ventilanordnungvalve assembly
- 3131
- UmgehungsrückschlagventilPass check valve
- 3232
- DifferenzdruckregelventilDifferential pressure control valve
- 3333
- 2-Kreis-FremdkraftbremsventilTwo-circuit power brake valve
- 3434
- Hydraulikpumpehydraulic pump
- 3535
- 1-Kreis-Fremdkraftbremsventil1-circuit power brake valve
- 36, 37, 3836, 37, 38
- Bremsleitungbrake line
- 3939
- Druckspeicheraccumulator
- 4040
- Rückschlagventilcheck valve
- 4141
- Vorspann-RückschlagventilBias check valve
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- WO 03/089283 [0002] WO 03/089283 [0002]
- DE 3003259 A1 [0004] DE 3003259 A1 [0004]
- DE 4344580 A1 [0005] DE 4344580 A1 [0005]
- DE 102008049551 A1 [0006] DE 102008049551 A1 [0006]
- DE 102008062208 A1 [0007] DE 102008062208 A1 [0007]
Claims (14)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010048403 DE102010048403A1 (en) | 2010-10-13 | 2010-10-13 | External power brake assembly e.g. dual circuit external power brake assembly, for e.g. tractor, has valve arrangement producing braking action with higher braking pressure at front axle than at rear axle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010048403 DE102010048403A1 (en) | 2010-10-13 | 2010-10-13 | External power brake assembly e.g. dual circuit external power brake assembly, for e.g. tractor, has valve arrangement producing braking action with higher braking pressure at front axle than at rear axle |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102010048403A1 true DE102010048403A1 (en) | 2012-04-19 |
Family
ID=45895736
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE201010048403 Withdrawn DE102010048403A1 (en) | 2010-10-13 | 2010-10-13 | External power brake assembly e.g. dual circuit external power brake assembly, for e.g. tractor, has valve arrangement producing braking action with higher braking pressure at front axle than at rear axle |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102010048403A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3003259A1 (en) | 1980-01-30 | 1981-09-10 | Robert Bosch Gmbh, 7000 Stuttgart | FOREIGN BRAKE SYSTEM |
DE4344580A1 (en) | 1993-12-24 | 1995-06-29 | Daimler Benz Ag | Valve arrangement for brake pressure control in a hydraulic power brake system of a road vehicle |
WO2003089283A1 (en) | 2002-04-19 | 2003-10-30 | Bosch Rexroth Ag | Brake system |
DE102008049551A1 (en) | 2007-10-05 | 2009-04-09 | Robert Bosch Gmbh | Hydraulic power brake system |
DE102008062208A1 (en) | 2008-12-13 | 2010-06-17 | Daimler Ag | Hydraulic braking system for e.g. hybrid vehicle, has two modules connected to two pairs of wheel brakes, respectively, where electrical brake pressure generation and individual wheel brake pressure control takes place in each module |
-
2010
- 2010-10-13 DE DE201010048403 patent/DE102010048403A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3003259A1 (en) | 1980-01-30 | 1981-09-10 | Robert Bosch Gmbh, 7000 Stuttgart | FOREIGN BRAKE SYSTEM |
DE4344580A1 (en) | 1993-12-24 | 1995-06-29 | Daimler Benz Ag | Valve arrangement for brake pressure control in a hydraulic power brake system of a road vehicle |
WO2003089283A1 (en) | 2002-04-19 | 2003-10-30 | Bosch Rexroth Ag | Brake system |
DE102008049551A1 (en) | 2007-10-05 | 2009-04-09 | Robert Bosch Gmbh | Hydraulic power brake system |
DE102008062208A1 (en) | 2008-12-13 | 2010-06-17 | Daimler Ag | Hydraulic braking system for e.g. hybrid vehicle, has two modules connected to two pairs of wheel brakes, respectively, where electrical brake pressure generation and individual wheel brake pressure control takes place in each module |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20130501 |