DE3337603A1 - Brake and clutch system - Google Patents

Brake and clutch system

Info

Publication number
DE3337603A1
DE3337603A1 DE19833337603 DE3337603A DE3337603A1 DE 3337603 A1 DE3337603 A1 DE 3337603A1 DE 19833337603 DE19833337603 DE 19833337603 DE 3337603 A DE3337603 A DE 3337603A DE 3337603 A1 DE3337603 A1 DE 3337603A1
Authority
DE
Germany
Prior art keywords
brake
clutch system
pressure converter
pressure
electrical signal
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Withdrawn
Application number
DE19833337603
Other languages
German (de)
Inventor
Eckhart Dipl.-Ing. 8603 Ebern Rüdiger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IHO Holding GmbH and Co KG
Original Assignee
FAG Kugelfischer Georg Schaefer KGaA
Kugelfischer Georg Schaefer and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by FAG Kugelfischer Georg Schaefer KGaA, Kugelfischer Georg Schaefer and Co filed Critical FAG Kugelfischer Georg Schaefer KGaA
Priority to DE19833337603 priority Critical patent/DE3337603A1/en
Publication of DE3337603A1 publication Critical patent/DE3337603A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F16D25/00—Fluid-actuated clutches
    • F16D25/12—Details not specific to one of the before-mentioned types
    • 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
    • B60T13/12—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 the fluid being liquid
    • 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
    • B60T13/24—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 the fluid being gaseous
    • B60T13/26—Compressed-air systems
    • B60T13/40—Compressed-air systems indirect, i.e. compressed air booster units indirect 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
    • 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
    • B60T13/72—Electrical control in fluid-pressure brake systems in vacuum systems or vacuum booster units
    • 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
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D48/04—Control by fluid pressure providing power assistance
    • 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
    • F16D48/00—External control of clutches
    • F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
    • F16D48/066—Control of fluid pressure, e.g. using an accumulator
    • 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
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/10—System to be controlled
    • F16D2500/102—Actuator
    • F16D2500/1026—Hydraulic
    • 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
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/10—System to be controlled
    • F16D2500/102—Actuator
    • F16D2500/1028—Pneumatic
    • 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
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/10—System to be controlled
    • F16D2500/104—Clutch
    • F16D2500/10406—Clutch position
    • F16D2500/10412—Transmission line of a vehicle
    • 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
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/10—System to be controlled
    • F16D2500/108—Gear
    • F16D2500/1086—Concentric shafts
    • 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
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/30—Signal inputs
    • F16D2500/302—Signal inputs from the actuator
    • F16D2500/3022—Current
    • 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
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/30—Signal inputs
    • F16D2500/302—Signal inputs from the actuator
    • F16D2500/3028—Voltage
    • 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
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/30—Signal inputs
    • F16D2500/314—Signal inputs from the user
    • F16D2500/31406—Signal inputs from the user input from pedals
    • F16D2500/31413—Clutch pedal position
    • 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
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/50—Problem to be solved by the control system
    • F16D2500/51—Relating safety
    • F16D2500/5104—Preventing failures
    • 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
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/50—Problem to be solved by the control system
    • F16D2500/51—Relating safety
    • F16D2500/5108—Failure diagnosis
    • 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
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/50—Problem to be solved by the control system
    • F16D2500/51—Relating safety
    • F16D2500/5114—Failsafe
    • 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
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/70—Details about the implementation of the control system
    • F16D2500/704—Output parameters from the control unit; Target parameters to be controlled
    • F16D2500/70402—Actuator parameters
    • F16D2500/7041—Position

Abstract

In the case of a brake or clutch system with a power-assistance booster device, in order to integrate a pneumatic-hydraulic pressure converter into the brake or clutch system and to control it so that expensive components necessary for control and in the event of a circuit failure can be dispensed with and to make a decentral arrangement possible, the pressure converter (1) supplies a hydraulically driven booster part (7) arranged coaxially behind an input cylinder with pressure fluid in one circuit, the pressure converter being controlled by a control element (13) and electrical signal elements (18, 19). <IMAGE>

Description

Brems- oder KupplungsanlageBrake or clutch system

Die Erfindung betrifft eine 3rems- oder Kupplungsanlage mit einer Hilf skraftverstärkereinrichtung nach dem Oberbegriff des Anspruchs 1.The invention relates to a 3 brake or clutch system with a Auxiliary power booster device according to the preamble of claim 1.

Hilfskraftenergieerzeuger für Mehrkreisbremsanlagen sind bekannt und unterscheiden sich durch die Art der Energieerzeugung und deren Einleitung.Auxiliary power generators for multi-circuit brake systems are known and differ in the type of energy generation and its introduction.

So werden zur Erzeugung von Hilfsenergie in Form hydraulischen Druckes vorzugsweise hydraulische Pumpen verwendet. Deren Einsatz erfordert Vorratsbehälter, druckgesteuerte Stromregler oder Hydraulikventile und Speicher, die jedoch aufwendig und teuer sind.So are used to generate auxiliary energy in the form of hydraulic pressure preferably hydraulic pumps are used. Their use requires storage containers, Pressure-controlled flow regulators or hydraulic valves and accumulators, which, however, are expensive and are expensive.

Aus der DEOS 21 54 229 ist ein pneumatisch hydraulischer Energieerzeuger für Hilfskraftanlagen bekannt. Dabei wird der pneumatisch betriebene auf Geberseite angeschlossene Dkuckumsetzer über ein Steuerventil betätigt, dessen Verstärkerzylinder zunächst einen mit dem jeweiligen Druckkreis verbundenen Zwischenhauptzylinder beaufschlagt um dann erst seine Energie in den direkt beaufschlagten 3ruckkreiæ weiterzuleiten, was einen großen Aufwand zur Funktionserhaltung des übrigen Druckkreises bei Druckkreisausfall darstellt und durch die mehrfache Energieumsetzung einen geringeren Wirkungsgrad aufweist.DEOS 21 54 229 describes a pneumatic hydraulic energy generator known for auxiliary systems. The pneumatically operated one is on the encoder side connected pressure converter operated via a control valve, its booster cylinder initially applied to an intermediate master cylinder connected to the respective pressure circuit only then to pass on his energy to the directly applied 3ruckkreiæ, what a great effort to maintain the functionality of the rest of the pressure circuit in the event of a pressure circuit failure represents and through the multiple energy conversion a lower efficiency having.

Vakuum-Eilfskraftverstärker mit angeflanschten Tandem-Eauptzylinder weisen ein großes bauvolumen auf und erschweren durch den Platzbedarf und die direkte Pedalbetätigung eine Anordnung im Bereich des PedalhebelBJerkes.Vacuum booster with flanged tandem main cylinder have a large construction volume and make it difficult due to the space requirements and the direct Pedal actuation an arrangement in the area of the pedal lever Jerkes.

Es ist Aufgabe der Erfindung, einen pneumatisch hydraulischen Druckumsetzer so in eine hydraulische ems- oder Kupplungsanlage zu integrieren und zu steuern, daß für Steuerung und bei Ereisausfall nötige aufwendige bauteile entfallen und eine dezentrale Anordnung möglich iste Die Lösung der Aufgabe ist aus dem kennzeichnenden Teil des Anspruches 1 ersichtlich. Dabei wird der pneumatisch hydraulische Druckumsetzer zur Versorgung eines hinter dem Geberzylinder angeordneten Eydraulikverstärkers verwendet. Dadurch wird eine einkreisige I)ruckfluidversorgung möglich, deren Steuerung auf einfache Weise mit einem elektrisch angesteuerten 3/2-Wege-Fneumatikventil und einem oder zwei Elektrosignalschalternerfolgt. Bei Abfall des Stellsignales durch Umsteuern des Pneumatikventiles wird der Membrankolben des Drtickumsetzers in seine Grundstellung zurückgeschoben. Der nach jeder Löse- oder Ruckwärtsbewegung des Fußpedalgestänges nötige Nachladehub wird von einem im Betätigungsgestänge des Verstärkers oder am Fußpedal integrierten Elektrosignalschalter ausgelöst, der als wegabhängiger Schleppkontakt ausgeführt ist. Ein verminderter verstärkerseitiger Volumensverbrauch kann wahlweise dadurch erreicht werden, daß der Druckumsetzer durch einen zweiten Elektrosignalschalter erst nach Beendigung des Anlegevorganges der Nehmerorgane an Bremse oder Kupplung zugeschaltet wird.It is the object of the invention to provide a pneumatic hydraulic pressure converter to be integrated and controlled in a hydraulic ems or coupling system, that expensive components required for control and in the event of a failure are omitted and a decentralized arrangement is possible. The solution to the problem is based on the characteristic Part of claim 1 can be seen. The pneumatic hydraulic pressure converter is used to supply an hydraulic booster arranged behind the master cylinder used. This enables a single-circuit I) return fluid supply steering in a simple way with an electrically controlled 3/2-way pneumatic valve and one or two electric signal switches. When the control signal drops through When the pneumatic valve is reversed, the diaphragm piston of the pressure converter moves into its Basic position pushed back. The one after every release or backward movement of the foot pedal linkage necessary reloading stroke is from one in the actuator linkage of the amplifier or on Electric signal switch integrated in the foot pedal, which acts as a path-dependent drag contact is executed. A reduced volume consumption on the amplifier side can optionally can be achieved in that the pressure converter by a second electrical signal switch only after the process of applying the slave organs to the brake or clutch has been completed is switched on.

Die Erfindung soll anhand der Fig. 1 näher erläutert werden.The invention will be explained in more detail with reference to FIG.

In Fig. 1 ist eine erfindungsgemäße Brems- oder Kupplungsanlage schematisch im Schnitt dargestellt. Dabei wird ein Druckumsetzer 1 verwendet, wie er bereits in der Patentanmeldung P 33 19 899.3 beschrieben ist. Der Druckumsetzer 1 besteht aus dem Unterdruckgehäuse, das durch den Membrankolben 2 in eine obere Druckksmmer 3 und eine untere Druckkammer 4 geteilt wird, und dem einteilig angesetzten Rydraulikzylinder 5, der durch den am Membrankolben befindlichen Plunger 6 beaufschlagt wird. Der Eydraulikzylinder 5 des Druckumsetzers 1 ist einkreisig über die Druckleitung 8 mit der Druckkammer 9 des Verstärkerteiles 7 und dessen Ausgleichskammer 10 über eine Rücklaufleitung 11 mit dem Nachlaufbehältrer 12 des Druckumsetzer 1 verbunden. Das Verstärkerteil 7, das in an sich bekannter Weise nach dem Solgekolbenprinzip arbeitet, ist mit einem Td.-Eaupt- oder Kupplungszylinder verbunden.In Fig. 1, a brake or clutch system according to the invention is schematically shown in section. A pressure converter 1 is used here, as it has already been is described in patent application P 33 19 899.3. The pressure converter 1 consists from the vacuum housing, which is passed through the diaphragm piston 2 into an upper pressure chamber 3 and a lower pressure chamber 4 is divided, and the one-piece attached hydraulic cylinder 5, which is acted upon by the plunger 6 located on the diaphragm piston. Of the The hydraulic cylinder 5 of the pressure converter 1 is single-circuit via the pressure line 8 with the pressure chamber 9 of the amplifier part 7 and its compensation chamber 10 over a return line 11 is connected to the follow-up container 12 of the pressure converter 1. The amplifier part 7, which in a known manner according to the Solge piston principle works is connected to a Td.-master or clutch cylinder.

Die Steuerung erfolgt mit Hilfe eines elektromagnetisch betätigten pneumatischen 3/2-Wegeventiles 13, dessen Magnet von einer Stromquelle 14 angesteuert wird. Das in Grundstellung auf Durchgang geschaltete 3/2-Wegeventil 13 verbindet die Vakuumquelle 15 mit der oberen Druckkammer 3, während die untere Drucksamer 4 ungesteuert mit der Vakuumquelle 15 über eine Leitung 16, ktirzgeschaltet ist, was eine Schwellzeitverkürzung beim Druckaufbau im Zylinder 5 und dadurch ein besseres Ansprechverhalten des lruckumsetzers 1 bewirkt.The control takes place with the help of an electromagnetically operated pneumatic 3/2-way valve 13, the magnet of which is controlled by a power source 14 will. The 3/2-way valve 13, which is switched to passage in the basic position, connects the vacuum source 15 with the upper pressure chamber 3, while the lower Drucksamer 4 is uncontrolled with the vacuum source 15 via a line 16, short-circuit, what a shortening of the swell time during the pressure build-up in cylinder 5 and thus a better one Responsiveness of the pressure converter 1 causes.

Das elektromagnetisch betätigte 3/2-Wegeventil 13 wird von einem oder zwei Signalgliedern, einem mit dem Pedalgestänge 17 mechanisch betätigten Elektroschleppschalter 18 und wahlweise einem von der Druckkammer des vorgelagerten Geberzylinder angesteuerten, druckbetätigten Elektrosignalschalter 19 ge- steuert. Wird nun das Pedal 17 betätigt, so wird zunächst der Eaupt- oder Kupplungszylinder ohne Unterstützung verschoben bis der Elektroschleppschalter 18 geschlossen ist. Wenn im Geberzylinder ein Druck erreicht ist, der z. B. dem Anlegedruck entspricht, schließt der hier anliegende Druck den in Reihe zum Elektroschleppschalter 18 geschalteten Elektrosignalschnlter 19. Der Stromkreis ist geschlossen, die Elektromagnetspule schaltet das pneumatische 3/2-Wegeventil 13 um und leitet am Druckumsetzer 1 den Verstärkungsvorgang ein, welcher dann durch das Verstärkerteil 7 eine Erhöhung der Betätigungækraft bewirkt. Die verzögerte druckabhängige Zuschaltung des Druckumsetzers 1 durch den druckbetätigten Elektrosignalschalter 19 verringert den verstärkerseitigen Volumenverbrauch, weil dadurch der Druckumsetzer 1 erst nach Beendigung des Anlegevorganges an den Radbremsen wirksam wird, was einem bestimmten, über das Pedalgestänge 17 erzeugten anlegedruck entspricht. Der Nachladevorgang, der das RSckfahren des Membrankolbens 2 in die Grundstellung bedingt, wird durch Entlasten oder Öffnen des Elektrosignalschalters 18, also bei einer RUckwärtsbewegung des Pedalgestänges 17 im Verstärkerteil 7 erreicht, wobei ein zeitverzögertes Öffnen des Elektroschleppschalters 18, ein "Pedalspiel" an Kupplung oder Bremse ermöglicht, ohne ein ständiges An- und Abschalten des 3/2-Wegeventiles 13 zu bewirken.The electromagnetically operated 3/2-way valve 13 is of one or two signal elements, one with the pedal linkage 17 mechanically operated electric tow switch 18 and optionally one controlled by the pressure chamber of the upstream master cylinder, pressure-actuated electrical signal switch 19 controls. Will that now If the pedal 17 is actuated, the main or clutch cylinder is initially operated without assistance moved until the electric tow switch 18 is closed. If in the master cylinder a pressure is reached that z. B. corresponds to the application pressure, closes here applied pressure the electric signal switch connected in series to the electric tow switch 18 19. The circuit is closed, the electromagnetic coil switches the pneumatic one 3/2-way valve 13 and initiates the boosting process at pressure converter 1, which then causes an increase in the actuation force through the amplifier part 7. The delayed pressure-dependent connection of the pressure converter 1 by the pressure-actuated one Electrical signal switch 19 reduces the volume consumption on the amplifier side because thereby the pressure converter 1 only after the end of the application process to the wheel brakes What becomes effective, which is a certain applied pressure generated via the pedal linkage 17 is equivalent to. The reloading process, which causes the membrane piston 2 to retract into the Conditional basic position, is achieved by releasing or opening the electrical signal switch 18, i.e. when the pedal linkage 17 moves backwards in the amplifier part 7, with a time-delayed opening of the electric tow switch 18, a "pedal play" on the clutch or brake, without having to constantly switch the 3/2-way valve on and off 13 to effect.

Nach Öffnen des Schleppschalters 18 fällt der Strom am 3/2-Wegeventil 13 ab, das in seine Ausgangsstellung zuruckgedrückt wird und der Membrankolben 2 mit dem Plunger 5 wandert in Grundstellung zurück.After opening the tow switch 18, the current at the 3/2-way valve falls 13, which is pushed back into its starting position and the diaphragm piston 2 with the plunger 5 moves back into the basic position.

Damit wird eine Hilfskraftverstärkereinrichtung geschaffen, die im Vergleich zu bekannten Systemen und Anordnungsvarianten einfacher aufgebaut ist und kostengänstiger hergestellt werden kann, keine bestimmten Eiuibaustellen der großvolumigen Bauteile voraussetzt und dartiberhinaus ein gutes Ansprech-und Steuerverhalten zeigt.This creates a power booster device that is in the Compared to known systems and arrangement variants is more simply structured and can be produced more cheaply, no specific features of the requires large-volume components and, moreover, good response and control behavior shows.

Claims (3)

Schutzansprüche 1. Brems- oder Kupplungsanlage mit einer Hilfskraftverstärkereinrichtung, insbesondere für Kraftfahrzeuge, mit einem pneumatisch hydraulischen Druckumsetzer zur Energieerzeugung, der ein hydraulisches Verstärkerteil versorgt, dadurch gekennzeichnet, daß der pneumatisch hydraulische Druckumsetzer (1) ein hydraulisch betriebenes, koaxial hinter einem Geberzylinder angeordnetes Verstärkerteil (7) einkreisig mit Druckfluid versorgt und durch ein Steuerglied (13) und ein oder mehrere Elektrosignalglieder (18, 19) gesteuert wird.Protection claims 1. Brake or clutch system with an auxiliary power booster device, especially for motor vehicles, with a pneumatic hydraulic pressure converter for generating energy, which supplies a hydraulic booster part, characterized in that, that the pneumatic hydraulic pressure converter (1) is a hydraulically operated, An amplifier part (7) arranged coaxially behind a master cylinder with a single circuit Pressure fluid supplied and through a control member (13) and one or more electrical signal members (18, 19) is controlled. 2. Brems- oder Kupplungsanlage nach anspruch 1, dadurch gekennzeichnet, daß das Elektrosignalglied ala ein am Betätigungspedal (17) befestigter mechanischer Elektroschleppkontakt ausgefuhrt ist.2. Brake or clutch system according to claim 1, characterized in that that the electrical signal element ala a mechanical attached to the operating pedal (17) Electrical towing contact is carried out. 3. Brems- oder Kupplungsanlage nach Anspruch 1, dadurch gekennzeichnet, daß das Elektrosignalglied (19) als druckbetätigter Elektroschalter ausgeführt ist, welcher vom Geberzylinder beaufschlagt ist.3. Brake or clutch system according to claim 1, characterized in that that the electrical signal element (19) is designed as a pressure-actuated electrical switch, which is acted upon by the master cylinder.
DE19833337603 1983-10-15 1983-10-15 Brake and clutch system Withdrawn DE3337603A1 (en)

Priority Applications (1)

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DE19833337603 DE3337603A1 (en) 1983-10-15 1983-10-15 Brake and clutch system

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DE19833337603 DE3337603A1 (en) 1983-10-15 1983-10-15 Brake and clutch system

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DE3337603A1 true DE3337603A1 (en) 1985-04-25

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0249536A2 (en) * 1986-06-05 1987-12-16 Carl D. Russell Method and apparatus for changing a mechanical force to a larger hydraulic force
WO1990005081A2 (en) * 1988-11-03 1990-05-17 Alfred Teves Gmbh Hydraulic brake system with slip control
WO1990014257A1 (en) * 1989-05-26 1990-11-29 Alfred Teves Gmbh Actuating unit for a vehicle braking system with antiskid system
EP0680863A1 (en) * 1994-05-06 1995-11-08 Alliedsignal Europe Services Techniques Brake system with dual control and condition monitoring
FR2727370A1 (en) * 1994-11-29 1996-05-31 Alliedsignal Europ Services Braking system with hydraulic servo assisted unit for vehicle

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0249536A2 (en) * 1986-06-05 1987-12-16 Carl D. Russell Method and apparatus for changing a mechanical force to a larger hydraulic force
EP0249536A3 (en) * 1986-06-05 1988-09-07 Carl D. Russell Method and apparatus for changing a mechanical force to a larger hydraulic force
WO1990005081A2 (en) * 1988-11-03 1990-05-17 Alfred Teves Gmbh Hydraulic brake system with slip control
WO1990005081A3 (en) * 1988-11-03 1990-06-28 Teves Gmbh Alfred Hydraulic brake system with slip control
WO1990014257A1 (en) * 1989-05-26 1990-11-29 Alfred Teves Gmbh Actuating unit for a vehicle braking system with antiskid system
EP0680863A1 (en) * 1994-05-06 1995-11-08 Alliedsignal Europe Services Techniques Brake system with dual control and condition monitoring
FR2719540A1 (en) * 1994-05-06 1995-11-10 Alliedsignal Europ Services Braking system with dual control and state control.
FR2727370A1 (en) * 1994-11-29 1996-05-31 Alliedsignal Europ Services Braking system with hydraulic servo assisted unit for vehicle

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