DE2108350A1 - Pressure regulating device for hydraulic brakes - Google Patents

Pressure regulating device for hydraulic brakes

Info

Publication number
DE2108350A1
DE2108350A1 DE19712108350 DE2108350A DE2108350A1 DE 2108350 A1 DE2108350 A1 DE 2108350A1 DE 19712108350 DE19712108350 DE 19712108350 DE 2108350 A DE2108350 A DE 2108350A DE 2108350 A1 DE2108350 A1 DE 2108350A1
Authority
DE
Germany
Prior art keywords
pressure
wheel cylinder
regulating device
cylinder
pressure regulating
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.)
Pending
Application number
DE19712108350
Other languages
German (de)
Inventor
Der Anmelder Ist
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19712108350 priority Critical patent/DE2108350A1/en
Priority to SE569771A priority patent/SE382781B/en
Priority to GB1294771A priority patent/GB1347033A/en
Priority to FR7115987A priority patent/FR2088318B1/fr
Publication of DE2108350A1 publication Critical patent/DE2108350A1/en
Pending legal-status Critical Current

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
    • B60T8/17—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
    • B60T8/1761—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure
    • B60T8/17613—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure based on analogue circuits or digital circuits comprised of discrete electronic elements
    • 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
    • B60T8/42—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 having expanding chambers for controlling pressure, i.e. closed systems
    • B60T8/4208—Debooster systems
    • B60T8/4225—Debooster systems having a fluid actuated expansion unit
    • B60T8/4233—Debooster systems having a fluid actuated expansion unit with brake pressure relief by introducing fluid pressure into the expansion unit

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)

Description

Druckregelvorrichtung für Hydraulikbremsen Die Erfindung ist ein Zusatz zur Patentanmeldung P 2021697.1, welche Verfahren zum Verhindern des Blockierens de Fahrzeugräder während des Bremsens unter maximaler Verzögerung betrifft. Pressure control device for hydraulic brakes The invention is a Addition to patent application P 2021697.1, which method for preventing blocking de vehicle wheels during braking under maximum deceleration.

Aufgabe der Erfindung ist es, zu diesen Verfahren eine Vorrichtung zu schaffen, welche bei Hydraulikbremsen,in einfacher Weise eine Druckregelung im Radzylinder ermöglicht.The object of the invention is to provide a device for these methods to create, which in hydraulic brakes, a pressure control in a simple manner Wheel cylinder allows.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß ein verschiebbarer, federbelasteter Sperrkolben Hauptzylinder und Radzylinder voneinander trennt und während der Blockierneigung eines Fahrzeugrades durch eine Hilfskraft dem Druck im Hauptzylinder entgegenwirkt und gleichzeitig den Druck im Radzylinder senkt.According to the invention this object is achieved in that a displaceable, Spring-loaded locking piston separates the master cylinder and the wheel cylinder from each other and During the tendency of a vehicle wheel to lock, the pressure is applied by an auxiliary counteracts in the master cylinder and at the same time lowers the pressure in the wheel cylinder.

Die Hilfskraft, die während der Druckregelung im Radzylinder auf den Sperrkolben wirkt, kann mit Hilfe des Motorsaugdruckes oder mit Hilfe von Druckluft und einer hydraulischen Kraftübersetzung geschaffen werden.The auxiliary force, which during the pressure regulation in the wheel cylinder on the Locking piston works, can be with the help of the engine suction pressure or with the help of compressed air and a hydraulic power transmission.

Mit Hilfe eines 3-Wege-Magnetventils läßt sich die wirksam werdende Höhe des Motorsaugdruckes bzw. der Druckluft und damit auch die Größe der Hilfskraft und des Druckes im Radzylinder in einfacher Weise regeln.With the help of a 3-way solenoid valve, the The level of the engine suction pressure or the compressed air and thus also the size of the auxiliary and regulate the pressure in the wheel cylinder in a simple manner.

Der-Vorteil dieser Druckregelvorrichtung für Hydraulikbremsen gegenüber den bisher bekannten besteht darin, daß die Druckregelung mit der am Kraftfahrzeug bereits vorhandenen Energieform (Motorsaugdruck, Druckluft) durchgeführt werden kann und aufgrund der Eigenschaften des Energieträgers eine sanfte Regelung des Druckes im Radzylinder ermöglicht.The advantage over this pressure control device for hydraulic brakes the previously known is that the pressure control with that on the motor vehicle already existing form of energy (motor suction pressure, compressed air) can be carried out can and due to the properties of the energy source, a gentle one Control of the pressure in the wheel cylinder allows.

Ein Ausführungsbeispiel der erfindungsgemäßen Druckregelvorrichtung für Hydraulikbremsen ist in der Fig.1 dargestellt und im folgenden beschrieben.An embodiment of the pressure regulating device according to the invention for hydraulic brakes is shown in Fig.1 and described below.

Der Sperrkolben (1), der als Stufenkolben ausgebildet ist, wird zu Beginn des Bremsvorganges durch die über die Leistung (2) zum Radzylinder strömende Bremsflüssigkeit gegen die Kraft der Feder (3) zurückgedrückt und gibt die Leistung (4) zum Radzylinder frei. Die aus dem Zylinderraum (5) verdrängte Bremsflüssigkeit kann über das durch die Feder (6) und den Stellkolben (7) offengehaltene Rückschlagventil (8) in den Radzylinder entweichen.The locking piston (1), which is designed as a stepped piston, closes Beginning of the braking process due to the power (2) flowing to the wheel cylinder Brake fluid is pushed back against the force of the spring (3) and gives the power (4) to the wheel cylinder free. The brake fluid displaced from the cylinder space (5) can via the non-return valve held open by the spring (6) and the actuating piston (7) (8) escape into the wheel cylinder.

Nach Beendigung des Zuflusses von Bremsflüssigkeit in den Radzylinder schiebt die Feder (3) den Sperrkolben wieder in die Ausgangsstellung, in der die Leitungen (2) und (4) voneinander getrennt sind, in der aber eine Druckerhöhung oder -senkung im Radzylinder über den Fußbremsliebel ohne Behinderung möglich ist.After the brake fluid has stopped flowing into the wheel cylinder the spring (3) pushes the locking piston back into the starting position in which the Lines (2) and (4) are separated from each other, but in which there is an increase in pressure or lowering in the wheel cylinder is possible without hindrance using the foot brake lever.

Die durch die Rückstellung des Sperrkolbens in die Ausgangsstellung verdrängte Bremsflüssigkeit fließt über das Rückschlagventil (8) in den Zylinderraum (5) zurück.By resetting the locking piston to the starting position Displaced brake fluid flows through the check valve (8) into the cylinder chamber (5) back.

Ist wegen der Blockierneigung des Fahrzeugrades der Druck im Radbremszylinder zu senken, so öffnet ein 3-Wege-Magnetventil den Durchlaß vom Raum (9) zum Saugstutzen des Motors, so daß durch die Membran (10) auf den Regelkolben (11) eine Druckkraft wirkt und einen hydraulischen Druck erzeugt. Dieser Druck verschiebt zunächst den Stellkolben (7), so daß das Rückschlagventil (8) sich schließt. Die Ausgleichsbolmng (12) verhindert während der Verschiebung des Stellkolbens (7) eine Druckänderung in der Bremsflüssigkeit, und die Ausgleichsbohrung (13) verhindert die Bildung eines Druckluftpolsters im Zylinder des Stellkolbens (7).Is the pressure in the wheel brake cylinder due to the vehicle wheel's tendency to lock to lower, a 3-way solenoid valve opens the passage from space (9) to the suction nozzle of the motor, so that a pressure force is exerted on the control piston (11) through the membrane (10) acts and generates a hydraulic pressure. This pressure initially shifts the Adjusting piston (7) so that the check valve (8) closes. The compensation bolt (12) prevents a change in pressure during the displacement of the setting piston (7) in the brake fluid, and the compensating bore (13) prevents the formation of a Compressed air cushion in the cylinder of the setting piston (7).

Erreicht der von dem Regelkolben (11) erzeugte hydraulische Druck die Druckhöhe der Bremsflüssigkeit, so wirkt jede weitere Druckerhöhung über das Rückschlagventil (14) auch auf den Sperrkolben (1). Hierdurch wird eine Erhöhung des Druckes im Radbremszylinder über den Fußbremshebel verhindert und durch die Ausbildung des Sperrkolbens (1) als Stufenkolben wird gleichzeitig der Druck im Radzylinder gesenkt. Der große Durchmesser des Sperrkolbens (1) ist so bemessen, daß er dichtend in die Leistung (2) eingeschoben werden kann. Durch Regelung des Buftdruckes im Raum (9) kann der Druck im Radzylinder in bestimmten, festgelegten Grenzen geregelt werden.When the hydraulic pressure generated by the control piston (11) is reached the pressure level of the brake fluid, every further pressure increase acts via the Check valve (14) also on the locking piston (1). This will result in an increase of the pressure in the wheel brake cylinder via the foot brake lever and prevented by the When the locking piston (1) is designed as a stepped piston, the pressure in the Wheel cylinder lowered. The large diameter of the locking piston (1) is dimensioned so that that it can be pushed sealingly into the service (2). By regulating the Buftdruckes in space (9) can be the pressure in the wheel cylinder in certain, fixed Limits are regulated.

Gleicht sich während des Regelvorganges der Druck im Radzylinder dem im Hauptzylinder herrschenden, vom Fußbremshebel erzeugten, Druck an, so wird der Regelkolben (11) entlastet und die Feder (6) schiebt den Stellkolben (7) wieder gegen das Rückschlagventil (8) und öffnet es.If the pressure in the wheel cylinder is the same during the control process pressure generated by the foot brake lever in the master cylinder, the The control piston (11) is relieved and the spring (6) pushes the control piston (7) again against the check valve (8) and opens it.

Nach Beendigung des Bremsvorganges strömt die in den Radzylinder gedrückte Bremsflüssigkeit über das Rückschlagventil (15) wieder in den Hauptzylinder zurück.After the end of the braking process, the one pressed into the wheel cylinder flows Brake fluid back into the master cylinder via the non-return valve (15).

Claims (3)

PatentansprücheClaims 1. Bremsdruckregelvorrichtung für Hydraulikbremsen, dadurch gekennzeichnet, daß ein verschiebbarer, federbelasteter Srer kolben (1) Hauptzylinder und Radzylinder voneinander trennt und während der Blockierneigung des Fahrzeugrades durch eine Hilfskraft dem Druck im Hauptzylinder entgegenwirkt und gleichzeitig den Druck im Radzylinder senkt.1. Brake pressure regulating device for hydraulic brakes, characterized in that that a displaceable, spring-loaded Srer piston (1) master cylinder and wheel cylinder separates from each other and during the tendency of the vehicle wheel to lock by a Auxiliary force counteracts the pressure in the master cylinder and at the same time the pressure in the Wheel cylinder lowers. 2. Bremsdruckregelvorrichtung nach Anspruch 1,dadurch gekennzeichnet, daß die für die Druckregelung im Radzylinder erforderliche Hilfskraft mit Hilfe des Motorsaugdruckes erzeugt wird.2. Brake pressure regulating device according to claim 1, characterized in that that the auxiliary power required for the pressure control in the wheel cylinder with the help of the engine suction pressure is generated. 3. Bremsdruckregelvorrichtung nach Anspruch 1 dadurch gekennzeichnet, daß die für die Druckregelung im Radzylinder erforderliche Hilfskraft mit Hilfe von Druckluft erzeugt wird.3. Brake pressure regulating device according to claim 1, characterized in that that the auxiliary power required for the pressure control in the wheel cylinder with the help is generated by compressed air.
DE19712108350 1970-05-04 1971-02-22 Pressure regulating device for hydraulic brakes Pending DE2108350A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE19712108350 DE2108350A1 (en) 1971-02-22 1971-02-22 Pressure regulating device for hydraulic brakes
SE569771A SE382781B (en) 1970-05-04 1971-05-03 WAY TO PREVENT LOADING OF VEHICLE WHEELS DURING BRAKE AT MAXIMUM DELAY
GB1294771A GB1347033A (en) 1970-05-04 1971-05-04 Preventing the locking of vehicle wheels during braking
FR7115987A FR2088318B1 (en) 1970-05-04 1971-05-04

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712108350 DE2108350A1 (en) 1971-02-22 1971-02-22 Pressure regulating device for hydraulic brakes

Publications (1)

Publication Number Publication Date
DE2108350A1 true DE2108350A1 (en) 1972-09-07

Family

ID=5799464

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19712108350 Pending DE2108350A1 (en) 1970-05-04 1971-02-22 Pressure regulating device for hydraulic brakes

Country Status (1)

Country Link
DE (1) DE2108350A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3322422A1 (en) * 1983-06-22 1985-01-03 Alfred Teves Gmbh, 6000 Frankfurt Hydraulic brake system with an antilock device
DE3726389A1 (en) * 1987-08-07 1989-02-16 Teves Gmbh Alfred Motor vehicle brake system with a brake slip control circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3322422A1 (en) * 1983-06-22 1985-01-03 Alfred Teves Gmbh, 6000 Frankfurt Hydraulic brake system with an antilock device
DE3726389A1 (en) * 1987-08-07 1989-02-16 Teves Gmbh Alfred Motor vehicle brake system with a brake slip control circuit

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