DE19640141A1 - Slip-controlled compressed air braking system for commercial vehicles - Google Patents
Slip-controlled compressed air braking system for commercial vehiclesInfo
- Publication number
- DE19640141A1 DE19640141A1 DE1996140141 DE19640141A DE19640141A1 DE 19640141 A1 DE19640141 A1 DE 19640141A1 DE 1996140141 DE1996140141 DE 1996140141 DE 19640141 A DE19640141 A DE 19640141A DE 19640141 A1 DE19640141 A1 DE 19640141A1
- Authority
- DE
- Germany
- Prior art keywords
- brake
- valve
- pressure
- wheel
- brake circuit
- 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- Withdrawn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
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
- B60T8/24—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 vehicle inclination or change of direction, e.g. negotiating bends
- B60T8/246—Change of direction
-
- 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
- B60T8/172—Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
-
- 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
- B60T8/1755—Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
-
- 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
- B60T8/36—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 including a pilot valve responding to an electromagnetic force
- B60T8/3605—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 including a pilot valve responding to an electromagnetic force wherein the pilot valve is mounted in a circuit controlling the working fluid system
-
- 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
- B60T8/4818—Traction control, stability control, using both the wheel brakes and other automatic braking systems in pneumatic 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
- B60T2270/00—Further aspects of brake control systems not otherwise provided for
- B60T2270/30—ESP control system
- B60T2270/306—ESP control system hydraulic system components
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Electromagnetism (AREA)
- Regulating Braking Force (AREA)
Abstract
Description
Die Erfindung geht aus von einer schlupfgeregelten Druckluft-Bremsanlage nach der Gattung des Patentanspruchs.The invention is based on a slip-controlled Compressed air brake system according to the type of the claim.
Es ist schon eine solche Druckluft-Bremsanlage bekannt (DE 36 37 419 C2) bei der in beiden Bremskreisen Blockierschutzregelbetrieb durch Bremsdruckmodulation mittels der den Radbremsen an Vorder- und Hinterachse zugeordneten Drucksteuerventile möglich ist. Zusätzlich ist an der angetriebenen Hinterachse des Fahrzeugs Antriebsschlupfregelbetrieb durchführbar, indem mittels des Absperrventils und des Wechselventils Vorratsdruck in den radbremsseitigen Teil des zweiten Bremskreises eingesteuert und mit dem entsprechenden Drucksteuerventil moduliert wird, um das von unzulässig großem Antriebsschlupf betroffene Fahrzeugrad zu stabilisieren. Trotz dieser fortschrittlichen Ausbildung der Bremsanlage gibt es Fahrzustände, welche vom Fahrer des Fahrzeugs nicht beherrschbar sind.Such a compressed air brake system is already known (DE 36 37 419 C2) at in both brake circuits Anti-lock control mode through brake pressure modulation by means of the wheel brakes on the front and rear axles assigned pressure control valves is possible. In addition is on the driven rear axle of the vehicle Traction control operation feasible by using Shutoff valve and the shuttle valve supply pressure in the part of the second brake circuit controlled on the wheel brake side and modulated with the appropriate pressure control valve, the one affected by impermissibly large drive slip Stabilize vehicle wheel. Despite this advanced Training of the brake system, there are driving conditions, which from Drivers of the vehicle are not controllable.
Die erfindungsgemäße Druckluft-Bremsanlage mit den kennzeichnenden Merkmalen des Patentanspruchs hat demgegenüber den Vorteil, daß mit geringem zusätzlichem Aufwand aktiv Bremsdruck an einer Radbremse, an mehreren oder an allen Radbremsen des Fahrzeugs einsteuerbar ist, um auch querdynamisch kritische Fahrsituationen zu beherrschen, wie dies bei hydraulischen PKW-Bremsanlagen als sogenannte Fahrdynamikregelung bereits bekannt ist, beispielsweise durch die Berichte aus der Fachzeitschrift ATZ Automobiltechnische Zeitschrift 96 (1994) 11, Seiten 656 bis 670: "Das neue Fahrsicherheitssystem Electronic Stability Program von Mercedes-Benz" und Seiten 674 bis 689: "FDR - Die Fahrdynamikregelung von Bosch".The compressed air brake system according to the invention with the has characteristic features of the claim in contrast, the advantage that with little additional Active effort Brake pressure on one wheel brake, on several or can be controlled on all wheel brakes of the vehicle in order to to master driving situations critical to lateral dynamics, like this with so-called hydraulic car brake systems Driving dynamics control is already known, for example through the reports from the trade journal ATZ Automobiltechnische Zeitschrift 96 (1994) 11, pages 656 to 670: "The new driving safety system Electronic Stability Program from Mercedes-Benz "and pages 674 to 689:" FDR - Die Driving dynamics control from Bosch ".
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung mittels eines vereinfachten Schaltschemas einer schlupfgeregelten Druckluft-Bremsanlage für Nutzfahrzeuge dargestellt und in der nachfolgenden Beschreibung näher erläutert.An embodiment of the invention is in the drawing by means of a simplified circuit diagram slip-controlled compressed air braking system for commercial vehicles shown and in the following description explained.
Die in der Zeichnung schematisch vereinfacht dargestellte schlupfgeregelte Druckluft-Bremsanlage 1 für Nutzfahrzeuge weist einen Bremskreis I und einen Bremskreis II auf. Der Bremskreis I ist Radbremsen 2 und 3 einer nicht angetriebenen Vorderachse 4 des Fahrzeugs zugeordnet. An den Bremskreis II sind Randbremsen 5 und 6 der angetriebenen Hinterachse 7 des Fahrzeugs angeschlossen. Abweichend vom Ausführungsbeispiel können auch beide Achsen 4 und 7 oder es kann nur die Vorderachse 4 angetrieben sein. The slip-controlled compressed air brake system 1 for commercial vehicles, shown schematically in simplified form in the drawing, has a brake circuit I and a brake circuit II. Brake circuit I is assigned to wheel brakes 2 and 3 of a non-driven front axle 4 of the vehicle. Edge brakes 5 and 6 of the driven rear axle 7 of the vehicle are connected to the brake circuit II. In a departure from the exemplary embodiment, both axles 4 and 7 or only the front axle 4 can be driven.
Der Bremskreis I hat eine Versorgungsleitung 10, in der ein Druckluftbehälter 11 liegt. Die Versorgungsleitung 10 führt zu einem fußbetätigten zweikreisigen Betriebsbremsventil 12. Von diesem geht eine Arbeitsleitung 13 des Bremskreises I zu einem Wechselventil 14 mit Rückströmung aus. Nach dem Wechselventil 14 ist die Arbeitsleitung 13 zu einem Bremszylinder 15 und zu einem Bremszylinder 16 verzweigt. Im Arbeitsleitungszweig 13.1 befindet sich ein Drucksteuerventil 17 zur Modulation des Bremsdruckes, im Arbeitsleitungszweig 13.2 ist ebenfalls ein Drucksteuerventil 18 zum gleichen Zweck angeordnet. Der Bremszylinder 15 dient der Betätigung der dem rechten Vorderrad 19 des Fahrzeugs zugeordneten Radbremse 2, der Bremszylinder 16 gehört zur Radbremse 3 des linken Vorderrades 20. Dem rechten Vorderrad 19 ist ferner ein Raddrehungssensor 21, dem linken Vorderrad 20 ein Raddrehungssensor 22 zugeordnet. Ferner ist der Bremskreis I mit einer von der Versorgungsleitung 10 zwischen dem Druckluftbehälter 11 und dem Betriebsbremsventil 12 ausgehenden, letzteres umgehenden Bypassleitung 23 ausgestattet, welche zum Wechselventil 14 führt. In der Bypassleitung 23 ist ein Absperrventil 24 mit Entlüftung angeordnet.The brake circuit I has a supply line 10 in which a compressed air tank 11 is located. The supply line 10 leads to a foot-operated two-circuit service brake valve 12 . From this a working line 13 of the brake circuit I goes to a shuttle valve 14 with backflow. After the shuttle valve 14 , the working line 13 is branched to a brake cylinder 15 and a brake cylinder 16 . In the working line branch 13.1 there is a pressure control valve 17 for modulating the brake pressure, in the working line branch 13.2 there is also a pressure control valve 18 for the same purpose. The brake cylinder 15 serves to actuate the wheel brake 2 assigned to the right front wheel 19 of the vehicle, the brake cylinder 16 belongs to the wheel brake 3 of the left front wheel 20 . A wheel rotation sensor 21 is also assigned to the right front wheel 19 , and a wheel rotation sensor 22 is assigned to the left front wheel 20 . Furthermore, the brake circuit I is equipped with a bypass line 23 , which bypasses the supply line 10 between the compressed air tank 11 and the service brake valve 12 and leads to the shuttle valve 14 . A shut-off valve 24 with ventilation is arranged in the bypass line 23 .
In gleicher Weise wie der Bremskreis I ist der Bremskreis II ausgestattet: Eine Versorgungsleitung 27 mit einem Druckluftvorratsbehälter 28 führt zum Betriebsbremsventil 12. Von diesem geht eine Arbeitsleitung 29 zu einem Wechselventil 30 mit Rückströmung aus. Auf das Wechselventil 30 folgend ist die Arbeitsleitung 29 zu Bremszylindern 31 und 32 an der Hinterachse 7 des Fahrzeugs verzweigt. Im Leitungszweig 29.1 liegt ein Drucksteuerventil 33 zur Modulation des Bremsdruckes, im Leitungszweig 29.2 ein gleiches Drucksteuerventil 34. Der Bremszylinder 31 ist der Radbremse 5 am rechten Hinterrad 35, der Bremszylinder 32 der Radbremse 6 am linken Hinterrad 36 des Fahrzeugs zugeordnet. Nahe dem rechten Hinterrad 35 befindet sich ein Raddrehungssensor 37, am linken Hinterrad 36 ein Raddrehungssensor 38. Ebenso erstreckt sich zwischen der Vorratsleitung 27 und dem Wechselventil 30 eine das Betriebsbremsventil 12 umgehende Bypassleitung 39 mit einem Absperrventil 40 mit Entlüftung.Brake circuit II is equipped in the same way as brake circuit I: a supply line 27 with a compressed air reservoir 28 leads to service brake valve 12 . From this, a working line 29 extends to a shuttle valve 30 with backflow. Following the shuttle valve 30 , the working line 29 is branched to brake cylinders 31 and 32 on the rear axle 7 of the vehicle. In line branch 29.1 there is a pressure control valve 33 for modulating the brake pressure, in line branch 29.2 there is an identical pressure control valve 34 . The brake cylinder 31 is assigned to the wheel brake 5 on the right rear wheel 35 , the brake cylinder 32 to the wheel brake 6 on the left rear wheel 36 of the vehicle. There is a wheel rotation sensor 37 near the right rear wheel 35 and a wheel rotation sensor 38 on the left rear wheel 36 . Likewise, a bypass line 39 bypassing the service brake valve 12 with a shut-off valve 40 with ventilation extends between the supply line 27 and the shuttle valve 30 .
Zur Druckluft-Bremsanlage 1 gehört außerdem ein elektronisches Steuergerät 43, an welches die erwähnten Raddrehungssensoren 21, 22, 37, 38, ein Lenkwinkelsensor 44 und ein Giergeschwindigkeitssensor 45 angeschlossen sind. Mittels des elektronischen Steuergeräts 43 sind die elektromagnetisch betätigbaren Ventile 17, 18, 24, 33, 34, 40 der Druckluft-Bremsanlage 1 schaltbar.The compressed air brake system 1 also includes an electronic control unit 43 , to which the wheel rotation sensors 21 , 22 , 37 , 38 , a steering angle sensor 44 and a yaw rate sensor 45 are connected. The electromagnetically actuable valves 17 , 18 , 24 , 33 , 34 , 40 of the compressed air brake system 1 can be switched by means of the electronic control device 43 .
Die Druckluft-Bremsanlage 1 hat, kurz umrissen, folgende
Funktionen:
Bei einer vom Fahrzeugführer ausgelösten, abstufbaren
Bremsung wird mittels des Betriebsbremsventils 12 Druckluft
in die Bremskreise I und II eingesteuert und Bremskraft an
allen Radbremsen 2, 3, 5, 6 des Nutzfahrzeugs erzeugt. Dabei
nehmen die Drucksteuerventile 17, 18, 33, 34 ihre
Durchlaßstellung ein, während die Absperrventile 24 und 40
sich in ihrer Schließstellung befinden. Außerdem sperren die
Wechselventile 14 und 30 die Verbindung zu den
Absperrventilen 24 und 40.The compressed air brake system 1 , briefly outlined, has the following functions:
In the event of a gradual braking triggered by the vehicle driver, compressed air is fed into the brake circuits I and II by means of the service brake valve 12 and braking force is generated on all wheel brakes 2 , 3 , 5 , 6 of the commercial vehicle. The pressure control valves 17 , 18 , 33 , 34 assume their open position, while the shut-off valves 24 and 40 are in their closed position. In addition, the shuttle valves 14 and 30 block the connection to the shut-off valves 24 and 40 .
Bei einer derartigen Bremsung mit Blockiergefahr wird diese vom elektronischen Steuergerät 43 aufgrund der Signale der Raddrehungssensoren 21, 22, 37, 38 erkannt und am betroffenen Fahrzeugrad oder an den betroffenen Fahrzeugrädern der Bremsdruck im zugeordneten Bremszylinder 15, 16, 31, 32 mittels des zugeordneten Drucksteuerventils 17, 18, 33, 34 in Phasen für Druckabbau, Druckhalten und Druckaufbau moduliert.In the case of such braking with a risk of locking, the electronic control device 43 detects it on the basis of the signals from the wheel rotation sensors 21 , 22 , 37 , 38 and the brake pressure in the associated brake cylinder 15 , 16 , 31 , 32 on the affected vehicle wheel or the affected vehicle wheels by means of the assigned pressure control valve 17 , 18 , 33 , 34 modulated in phases for pressure reduction, pressure maintenance and pressure build-up.
Tritt beim Anfahren und Beschleunigen des Nutzfahrzeugs an einem oder an beiden Hinterrädern 35, 36 unzulässig großer Antriebsschlupf auf, so schaltet das elektronische Steuergerät 43 das Absperrventil des Bremskreises II in die Durchlaßstellung, so daß Druckluft durch die Bypassleitung 39 und die Arbeitsleitungszweige 29.1 und 29.2 zu den Drucksteuerventilen 33 und 34 strömen kann, welche den Bremsdruck im Radbremszylinder 31, 32 des betroffenen Hinterrades oder der betroffenen Hinterräder 35, 36 moduliert, um den Schlupf auf ein zulässiges Maß zu reduzieren. Dabei sperrt das Wechselventil 30 die zum Betriebsbremsventil 12 führende Arbeitsleitung 29 des Bremskreises II ab.If impermissibly large drive slip occurs on one or both rear wheels 35 , 36 when starting and accelerating the commercial vehicle, the electronic control unit 43 switches the shut-off valve of the brake circuit II into the open position, so that compressed air through the bypass line 39 and the working line branches 29.1 and 29.2 can flow the pressure control valves 33 and 34 , which modulates the brake pressure in the wheel brake cylinder 31 , 32 of the affected rear wheel or the affected rear wheels 35 , 36 in order to reduce the slip to an acceptable level. The shuttle valve 30 shuts off the working line 29 of the brake circuit II leading to the service brake valve 12 .
Droht das Nutzfahrzeug mit oder ohne Bremsbetätigung durch den Fahrzeugführer beispielsweise bei Spurwechsel oder Kurvenfahrt zu schleudern, so wird dies vom elektronischen Steuergerät 43 aufgrund der Signale des Lenkwinkelsensors 44, des Giergeschwindigkeitssensors 45 und der Raddrehungsensoren 21, 22, 37, 38 erkannt. Durch Einsteuern von Druckluft in die Bremskreise I und II mittels der Absperrventile 24, 40 und modulieren des Bremsdrucks in den Bremszylindern 15, 16, 31, 32 werden an einem Fahrzeugrad, an mehreren oder an allen Fahrzeugrädern 19, 20, 35, 36 Bremskräfte erzeugt, erhöht oder vermindert, um Einfluß auf die Seitenführungskraft der betroffenen Fahrzeugräder zu nehmen und Momente um die Hochachse des Nutzfahrzeugs zu erzeugen, um dessen Bewegung auf dem vorgegebenen Fahrweg zu stabilisieren.If the commercial vehicle threatens to skid with or without brake actuation by the vehicle driver, for example when changing lanes or cornering, then this is recognized by the electronic control unit 43 on the basis of the signals from the steering angle sensor 44 , the yaw rate sensor 45 and the wheel rotation sensors 21 , 22 , 37 , 38 . By applying compressed air to the brake circuits I and II by means of the shut-off valves 24 , 40 and modulating the brake pressure in the brake cylinders 15 , 16 , 31 , 32 , braking forces are generated on one vehicle wheel, on several or on all vehicle wheels 19 , 20 , 35 , 36 , increased or decreased in order to influence the cornering force of the vehicle wheels concerned and to generate moments about the vertical axis of the commercial vehicle in order to stabilize its movement on the predetermined travel path.
Claims (1)
- - einem Radbremsen (2, 3) einer Vorderachse (4) des Fahrzeugs zugeordneten ersten Bremskreis (I),
- - einem Radbremsen (5, 6) einer Hinterachse (7) des Fahrzeugs zugeordneten zweiten Bremskreis (II),
- - einem an Vorratsdruck angeschlossenen Betriebsbremsventil (12) zum Steuern des Druckes im jeweiligen Bremskreis (I, II),
- - je einem der jeweiligen Radbremse (2, 3, 5, 6) zugeordneten Drucksteuerventil (17, 18, 33, 34) zum schlupfabhängigen Steuern des Bremsdrucks,
- - einem dem Bremskreis (II) der Hinterachse (7) zugeordneten Absperrventil (40) zum Einsteuern von Vorratsdruck in den Bremskreis (II) über ein zwischen Betriebsbremsventil (12) und Drucksteuerventil (33, 34) angeordnetes Wechselventil (30) und
- - einem elektronischen Steuergerät (43) zum schlupfabhängigen Steuern des Absperrventils (40) und der Drucksteuerventile (17, 18, 33, 34) im jeweiligen Bremskreis (I, II) in Abhängigkeit von das Raddrehverhalten überwachenden Sensoren (21, 22, 37, 38), gekennzeichnet durch die weiteren Merkmale:
- - dem Bremskreis (I) der Vorderachse (4) des Fahrzeugs ist ein vom elektronischen Steuergerät (43) schaltbares Absperrventil (24) zugeordnet zum Einsteuern von Vorratsdruck in den Bremskreis (I) über ein zwischen Betriebsbremsventil (12) und Drucksteuerventil (17, 18) angeordnetes Wechselventil (14),
- - es sind ein Lenkwinkelsensor (44) und ein Giergeschwindigkeitssensor (45) vorgesehen,
- - das elektronische Steuergerät (43) ist zum Auswerten der Signale des Lenkwinkelsensors (44) und des Giergeschwindigkeitssensors (45) zum Zwecke der Fahrdynamikregelung ausgebildet.
- - a wheel brake ( 2 , 3 ) of a front axle ( 4 ) of the vehicle associated with the first brake circuit (I),
- - A wheel brake ( 5 , 6 ) of a rear axle ( 7 ) of the vehicle assigned second brake circuit (II),
- - a service brake valve ( 12 ) connected to the supply pressure for controlling the pressure in the respective brake circuit (I, II),
- a pressure control valve ( 17 , 18 , 33 , 34 ) assigned to the respective wheel brake ( 2 , 3 , 5 , 6 ) for controlling the brake pressure as a function of slip,
- - One of the brake circuit (II) of the rear axle ( 7 ) associated shut-off valve ( 40 ) for controlling supply pressure in the brake circuit (II) via a service valve ( 12 ) and pressure control valve ( 33 , 34 ) arranged shuttle valve ( 30 ) and
- - An electronic control device ( 43 ) for slippage-dependent control of the shut-off valve ( 40 ) and the pressure control valves ( 17 , 18 , 33 , 34 ) in the respective brake circuit (I, II) depending on sensors ( 21 , 22 , 37 , 38 that monitor the wheel turning behavior ), characterized by the other features:
- - The brake circuit (I) of the front axle ( 4 ) of the vehicle is assigned a shut-off valve ( 24 ) which can be switched by the electronic control unit ( 43 ) for introducing supply pressure into the brake circuit (I) via a between the service brake valve ( 12 ) and the pressure control valve ( 17 , 18 ) arranged shuttle valve ( 14 ),
- a steering angle sensor ( 44 ) and a yaw rate sensor ( 45 ) are provided,
- - The electronic control unit ( 43 ) is designed to evaluate the signals of the steering angle sensor ( 44 ) and the yaw rate sensor ( 45 ) for the purpose of driving dynamics control.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1996140141 DE19640141A1 (en) | 1996-09-28 | 1996-09-28 | Slip-controlled compressed air braking system for commercial vehicles |
| PCT/DE1997/000608 WO1998013239A1 (en) | 1996-09-28 | 1997-03-26 | Air brake system with anti-wheel lock device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1996140141 DE19640141A1 (en) | 1996-09-28 | 1996-09-28 | Slip-controlled compressed air braking system for commercial vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE19640141A1 true DE19640141A1 (en) | 1998-04-02 |
Family
ID=7807326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1996140141 Withdrawn DE19640141A1 (en) | 1996-09-28 | 1996-09-28 | Slip-controlled compressed air braking system for commercial vehicles |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE19640141A1 (en) |
| WO (1) | WO1998013239A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002009990A1 (en) * | 2000-08-02 | 2002-02-07 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Stabilizing device for motor vehicles comprising compressed-air braking systems |
| WO2009023486A1 (en) * | 2007-08-13 | 2009-02-19 | Bendix Commercial Vehicle Systems Llc | Valve with integrated quick release and method to control said valve |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6371532B1 (en) | 1999-01-22 | 2002-04-16 | James B. Skarie | Traction-enhancing system for use with motor vehicles |
| DE102009022164A1 (en) * | 2009-05-20 | 2010-11-25 | Wabco Gmbh | Brake system for a vehicle, method for operating the brake system and valve device for a brake system |
| DE102015012378A1 (en) * | 2015-09-21 | 2017-03-23 | Wabco Gmbh | Method for adjusting brake pressures of a motor vehicle, brake system for carrying out the method and motor vehicle |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3637419A1 (en) * | 1986-11-03 | 1988-05-05 | Bosch Gmbh Robert | Brake system for commercial motor vehicles |
| DE4033767A1 (en) * | 1990-10-24 | 1992-04-30 | Bosch Gmbh Robert | ELECTRO-PNEUMATIC BRAKE SYSTEM |
-
1996
- 1996-09-28 DE DE1996140141 patent/DE19640141A1/en not_active Withdrawn
-
1997
- 1997-03-26 WO PCT/DE1997/000608 patent/WO1998013239A1/en active Application Filing
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002009990A1 (en) * | 2000-08-02 | 2002-02-07 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Stabilizing device for motor vehicles comprising compressed-air braking systems |
| DE10038046A1 (en) * | 2000-08-02 | 2002-02-28 | Knorr Bremse Systeme | Stabilization device for motor vehicles with compressed air operated braking devices |
| DE10038046B4 (en) * | 2000-08-02 | 2005-11-03 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Stabilization device for motor vehicles with pneumatic brake devices |
| WO2009023486A1 (en) * | 2007-08-13 | 2009-02-19 | Bendix Commercial Vehicle Systems Llc | Valve with integrated quick release and method to control said valve |
| US7780245B2 (en) | 2007-08-13 | 2010-08-24 | Bendix Commercial Vehicle Systems Llc | Valve with integrated quick release |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1998013239A1 (en) | 1998-04-02 |
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