DE4027565A1 - Anti-slip hydraulic braking system for vehicle - involves insertion of pressure responsive switching valve - Google Patents

Anti-slip hydraulic braking system for vehicle - involves insertion of pressure responsive switching valve

Info

Publication number
DE4027565A1
DE4027565A1 DE19904027565 DE4027565A DE4027565A1 DE 4027565 A1 DE4027565 A1 DE 4027565A1 DE 19904027565 DE19904027565 DE 19904027565 DE 4027565 A DE4027565 A DE 4027565A DE 4027565 A1 DE4027565 A1 DE 4027565A1
Authority
DE
Germany
Prior art keywords
brake
pressure
valve
pump
line
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Withdrawn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
DE19904027565
Other languages
German (de)
Inventor
Hans-D Reinartz
Helmut Steffes
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.)
Continental Teves AG and Co OHG
Original Assignee
Alfred Teves GmbH
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
Priority claimed from DE19904000837 external-priority patent/DE4000837B4/en
Application filed by Alfred Teves GmbH filed Critical Alfred Teves GmbH
Priority to DE19904027565 priority Critical patent/DE4027565A1/en
Priority to JP3511624A priority patent/JPH05501689A/en
Priority to US07/852,136 priority patent/US5297862A/en
Priority to PCT/EP1991/001243 priority patent/WO1992004215A1/en
Priority to DE59106626T priority patent/DE59106626D1/en
Priority to EP91912570A priority patent/EP0498861B1/en
Publication of DE4027565A1 publication Critical patent/DE4027565A1/en
Withdrawn legal-status Critical Current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
    • B60T8/32—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
    • B60T8/4827—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems
    • B60T8/4863—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems closed systems
    • B60T8/4872—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems closed systems pump-back 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
    • B60T13/12—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
    • B60T13/16—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 using pumps directly, i.e. without interposition of accumulators or reservoirs
    • 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
    • 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
    • B60T8/343—Systems characterised by their lay-out
    • B60T8/344—Hydraulic systems
    • B60T8/347—3 Channel systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—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
    • 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
    • B60T8/4018—Pump units characterised by their drive mechanisms
    • 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
    • B60T8/4018—Pump units characterised by their drive mechanisms
    • B60T8/4022—Pump units driven by an individual electric motor
    • 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
    • B60T8/4031—Pump units characterised by their construction or mounting
    • 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
    • B60T8/404—Control of the pump unit
    • 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
    • B60T8/404—Control of the pump unit
    • B60T8/405—Control of the pump unit involving the start-up phase
    • 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
    • B60T8/4275—Pump-back systems
    • B60T8/4291—Pump-back systems having means to reduce or eliminate pedal kick-back
    • 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
    • B60T8/44—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 co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device, i.e. open systems
    • B60T8/445—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 co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device, i.e. open systems replenishing the released brake fluid volume into the brake piping
    • 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
    • B60T8/4827—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems

Abstract

The hydraulic braking system has an arrangement to control the braking and/or drive slip in which a switching valve (28) is inserted between the master cylinder (1) and the pump (4) such that in a first position the valve keeps the brake pipe open and in a second position blocks the brake pipe (2) in the direction of the pump. The valve is switchable from the first to the second position by the master cylinder pressure. USE/ADVANTAGE - Braking system which dispenses with an electromagnetically actuated selection valve to give greater reliability.

Description

Eine Bremsanlage gemäß dem Oberbegriff des Anspruchs 1 ist in der Hauptanmeldung P 40 00 837.1 beschrieben. Die Pumpe liegt in der Bremsleitung. Sie wird erst vom Hauptbremszylinder getrennt, wenn eine Regelung einsetzt. Die Trennung erfolgt mit einem elektromagnetisch betätigten Trennventil.A braking system according to the preamble of claim 1 described in the main application P 40 00 837.1. The pump lies in the brake line. It is only from Master brake cylinder disconnected if regulation starts. The separation takes place with an electromagnetically operated Isolation valve.

Wird das Trennventil nicht geschaltet, hätte dies zur Folge, daß der Hauptbremszylinder während einer Regelung leer gepumpt wird. Das Schalten des Trennventils ist also zwingende Voraussetzung dafür, daß eine Regelung stattfinden kann. Es ist somit ohne weiteres ersichtlich, daß das Umschalten des Trennventils überwacht werden muß.If the isolating valve is not switched, this would result in that the master brake cylinder is empty during a regulation is pumped. The switching of the isolation valve is therefore imperative for regulation to take place can. It is therefore readily apparent that the Switchover of the isolating valve must be monitored.

Die Erfindung beruht daher auf der Aufgabe, die Bremsanlage gemäß dem Hauptpatent so weiter zu entwickeln, daß auf ein elektromagnetisch betätigtes Trennventil verzichtet werden kann, um so zu einer sicher arbeitenden Anlage zu gelangen.The invention is therefore based on the task of the brake system to develop according to the main patent so that on a electromagnetically operated isolation valve can be dispensed with can, in order to arrive at a system that works safely.

Die Aufgabe wird mit den Mitteln gelöst, die im kennzeichnenden Teil des Anpruchs 1 genannt sind. Weitere Ausbildungen der Idee sind in den Unteransprüchen beschrieben.The object is achieved with the means mentioned in the characterizing part of claim 1 . Further developments of the idea are described in the subclaims.

Die Erfindung hat zur Folge, daß die Pumpe nur zu Beginn einer Bremsung durchspült wird. Dies ist vollkommen ausreichend, um zu vermeiden, daß sich in der Pumpe Luftblasen bilden. Sobald ein bestimmter Druckpunkt, z. B. 5 bar erreicht wird, wird die Bremsleitung geschlossen und die weitere Versorgung der Radbremsen mit Druckmittel erfolgt über eine Nebenleitung, in die ein Vordruckventil eingeschaltet ist. Während einer Regelung saugt die Pumpe über einen gesonderten Sauganschluß Druckmittel aus einem Vorratsbehälter an.The invention has the consequence that the pump only at the beginning during a braking operation. It is perfect sufficient to avoid getting in the pump Form air bubbles. As soon as a certain pressure point, e.g. B. 5 bar is reached, the brake line is closed and the further supply of pressure to the wheel brakes via a secondary line into which a pre-pressure valve  is switched on. The pump sucks during regulation pressure medium from a separate suction port Storage container.

Im folgenden soll anhand eines Ausführungsbeispieles die Idee näher erläutert werden. Die Bremsanlage besteht aus einem Hauptbremszylinder 1, an den über eine Bremsleitung 2 eine oder mehrere Radbremsen 3 angeschlossen sind. Die Pumpe 4, die weiter unten näher beschrieben werden soll, ist in die Bremsleitung eingefügt, wobei ein Anschluß A über ein erstes Bremsleitungsstück 5 mit dem Hauptbremszylinder 1 und ihre Druckseite D über ein zweites Bremsleitungsstück 6 mit der Radbremse verbunden ist. In das zweite Bremsleitungsstück 6 ist ein Einlaßventil 7 eingefügt. Das Einlaßventil 7 wird elektromagnetisch betätigt. Es hält in seiner Grundstellung die Leitung offen und sperrt sie in seiner Schaltstellung. Die Radbremse 3 steht über eine Rücklaufleitung 9 mit einem Druckmittelsammler in Verbindung, wobei in der Rücklaufleitung 9 ein Auslaßventil 8 eingefügt ist, das ebenfalls elektromagnetisch betätigt wird und das in seiner Grundstellung die Rücklaufleitung sperrt und sie in seiner Schaltstellung öffnet. Der Druckmittelsammler 10 wird gebildet vom Druckmittelvorratsbehälter 10 am Hauptbremszylinder 1. Druckmittelvorratsbehälter 10 und Hauptbremszylinder 1 stehen bei nicht betätigtem Pedal miteinander in Druckmittelverbindung. Der Vorratsbehälter 10 steht über ein Saugventil 22 mit dem Pumpenraum 21 in Verbindung.The idea will be explained in more detail below using an exemplary embodiment. The brake system consists of a master brake cylinder 1 , to which one or more wheel brakes 3 are connected via a brake line 2 . The pump 4 , which will be described in more detail below, is inserted into the brake line, a connection A being connected to the master brake cylinder 1 via a first brake line section 5 and its pressure side D being connected to the wheel brake via a second brake line section 6 . An inlet valve 7 is inserted into the second brake line piece 6 . The inlet valve 7 is actuated electromagnetically. In its basic position it keeps the line open and blocks it in its switch position. The wheel brake 3 is connected via a return line 9 to a pressure medium collector, an outlet valve 8 being inserted in the return line 9 , which is also actuated electromagnetically and which in its basic position blocks the return line and opens it in its switching position. The pressure medium collector 10 is formed by the pressure medium reservoir 10 on the master brake cylinder 1 . Pressure medium reservoir 10 and master brake cylinder 1 are in pressure medium connection with one another when the pedal is not actuated. The reservoir 10 is connected to the pump chamber 21 via a suction valve 22 .

Die Radbremse 3 steht über eine Direktleitung 13 unmittelbar mit dem Hauptbremszylinder 1 in Verbindung. Die Direktleitung 13 weist ein Rückschlagventil 14 auf, das zum Hauptbremszylinder hin öffnet. The wheel brake 3 is connected directly to the master brake cylinder 1 via a direct line 13 . The direct line 13 has a check valve 14 which opens towards the master brake cylinder.

Die Pumpe 4 ist gemäß dieses Ausführungsbeispieles als Kolbenpumpe dargestellt, deren Pumpenkolben 19 über einen motorisch angetriebenen Exzenter 20 bewegt wird. Der Pumpenraum 21 vor dem Pumpenkolben 19 steht über je einem Rückschlagventil 22 bzw. 23 mit der Saugseite S bzw. der Druckseite D der Pumpe 4 in Verbindung. Das Rückschlagventil 22 öffnet zum Pumpenraum, während das Rückschlagventil 23 zum Pumpenraum hin sperrt.The pump 4 is shown according to this embodiment as a piston pump, the pump piston 19 of which is moved via a motor-driven eccentric 20 . The pump chamber 21 in front of the pump piston 19 is connected to the suction side S and the pressure side D of the pump 4 via a check valve 22 or 23 . The check valve 22 opens to the pump chamber, while the check valve 23 closes to the pump chamber.

In dem Bremsleitungsstück 5 ist ein Umschaltventil 28 eingefügt, das zwei Schaltstellungen aufweist. In der ersten Schaltstellung I ist die Bremsleitung offen. In der zweiten Schaltstellung wird in die Bremsleitung ein Rückschlagventil eingefügt, das zur Pumpe hin sperrt. Das Umschaltventil 28 wird vom Hauptzylinderdruck über eine Steuerleitung 29 gegen den Druck einer Feder von der ersten in die zweite Schaltstellung gebracht. Die Vorspannkraft der Feder entspricht in etwa einem Umschaltdruck von 5 bar.In the brake line piece 5 , a changeover valve 28 is inserted, which has two switching positions. In the first switch position I, the brake line is open. In the second switching position, a check valve is inserted into the brake line, which blocks the pump. The switch valve 28 is brought from the master cylinder pressure via a control line 29 against the pressure of a spring from the first to the second switching position. The preload force of the spring corresponds approximately to a switching pressure of 5 bar.

Parallel zum Umschaltventil 28 und zur Pumpe 4 ist in einer Nebenleitung 26 ein Vordruckventil 27 eingefügt, das bei einem Druck von ca. 2 bar öffnet. Die Nebenleitung 26 schließt den Hauptbremszylinder 1 unmittelbar an das Einlaßventil 7 an.Parallel to the changeover valve 28 and to the pump 4 , a pre-pressure valve 27 is inserted in a secondary line 26 and opens at a pressure of approximately 2 bar. The secondary line 26 connects the master brake cylinder 1 directly to the inlet valve 7 .

Die Pumpenkammer 21 weist somit 3 Anschlüsse auf, nämlich ein Anschluß A zum Hauptbremszylinder, einen Anschluß D zur Radbremse und einen Anschluß S zum Druckmittelvorratsbehälter 25.The pump chamber 21 thus has 3 connections, namely a connection A to the master brake cylinder, a connection D to the wheel brake and a connection S to the pressure medium reservoir 25 .

Die dargestellte Bremsanlage arbeitet nach dem folgenden Prinzip: The brake system shown works according to the following Principle:  

1. Ungeregelte Bremsung1. Uncontrolled braking

Mit Betätigen des Pedals (symbolisch dargestellt) wird Druckmittel aus dem Hauptbremszylinder 1 in die Radbremse 3 verdrängt. Der Druckmittelweg führt über das offene Umschaltventil 28, den Pumpenraum 21, das zweite Rückschlagventil 23 und das offene Einlaßventil 7. Es wird ein Druck in der Radbremse 3 aufgebaut, der zu einer Radverzögerung und in Folge zu einer Fahrzeugverzögerung führt. Wird das Pedal gelöst, so fließt Druckmittel aus der Radbremse 3 über das sich öffnende Rückschlagventil 14 durch die Direktleitung 13 zurück in den Hauptbremszylinder 1. Wichtig ist, daß der Druckaufbaupfad während einer normalen Bremsung durch die Pumpenkammer 21 führt.Pressing the pedal (shown symbolically) displaces pressure medium from the master cylinder 1 into the wheel brake 3 . The pressure medium path leads via the open changeover valve 28 , the pump chamber 21 , the second check valve 23 and the open inlet valve 7 . A pressure is built up in the wheel brake 3 , which leads to a wheel deceleration and consequently to a vehicle deceleration. If the pedal is released, pressure medium flows out of the wheel brake 3 via the opening check valve 14 through the direct line 13 back into the master brake cylinder 1 . It is important that the pressure build-up path leads through the pump chamber 21 during normal braking.

Das Umschaltventil 28 schaltet bei einem Druck von ca. 5 bar in der Bremsleitung um. Damit ist die Bremsleitung in Druckaufbaurichtung gesperrt. Der weitere Druckaufbau erfolgt nun über die Nebenleitung 26 und dem Vordruckventil 27. Das Vordruckventil hat die Aufgabe diese Nebenleitung solange zu sperren, wie die Hauptleitung noch geöffnet ist.The changeover valve 28 switches over at a pressure of approx. 5 bar in the brake line. The brake line is blocked in the pressure build-up direction. The further pressure build-up now takes place via the secondary line 26 and the admission pressure valve 27 . The pre-pressure valve has the task of blocking this secondary line as long as the main line is still open.

2. Geregelte Bremsung2. Controlled braking

Das Bremsverhalten des abzubremsenden Rades wird mittels nicht dargestellter Sensoren laufend überwacht. Eine elektronische Auswerteeinheit kann daher sofort feststellen, wenn das Rad zu blockieren droht. Tritt dieser Fall ein, so leitet die Auswerteeinheit die folgenden Aktionen ein. Zunächst wird das Einlaßventil 7 geschaltet, so daß die Bremsleitung gesperrt ist. Das Auslaßventil 8 wird geöffnet, so daß Druckmittel aus der Radbremse in den Druckmittelvorratsbehälter 25 abfließen kann. Der Pumpenantrieb M wird eingeschaltet, so daß die Pumpe Druckmittel aus dem Druckmittelvorratsbehälter 25 über das Saugventil 22 ansaugt. Das Druckmittel gelangt, falls das Einlaßventil geöffnet ist, zur Radbremse und über das umgeschaltete Umschaltventil 28 in den Hauptbremszylinder 1 und von dort über die als Regelventile ausgebildeten Zentralventile zurück in den Vorratsbehälter 25. Durch sukzessives Schalten des Einlaßventils 7 und des Auslaßventils 8 kann der Radbremse Druckmittel zugeführt und entnommen werden. Dies geschieht nach einem festgelegten Algorithmus, so daß am Rad ein optimaler Schlupfwert eingestellt wird. Über die Direktleitung 13 wird der Druck in der Radbremse auf den Druck im Hauptbremszylinder begrenzt. Nimmt daher der Fahrer die Pedalkraft zurück, sinkt auch der Druck in der Radbremse, so daß der Bremsvorgang bzw. Regelvorgang beendet wird.The braking behavior of the wheel to be braked is continuously monitored by means of sensors (not shown). An electronic evaluation unit can therefore immediately determine if the wheel threatens to lock. If this happens, the evaluation unit initiates the following actions. First, the inlet valve 7 is switched so that the brake line is blocked. The outlet valve 8 is opened so that pressure medium can flow out of the wheel brake into the pressure medium reservoir 25 . The pump drive M is switched on so that the pump sucks pressure medium from the pressure medium reservoir 25 via the suction valve 22 . If the inlet valve is open, the pressure medium reaches the wheel brake and via the switched changeover valve 28 into the master cylinder 1 and from there via the central valves designed as control valves back into the reservoir 25 . By gradually switching the inlet valve 7 and the outlet valve 8 , pressure medium can be supplied and removed from the wheel brake. This is done according to a defined algorithm, so that an optimal slip value is set on the wheel. The pressure in the wheel brake is limited to the pressure in the master brake cylinder via the direct line 13 . Therefore, if the driver withdraws the pedal force, the pressure in the wheel brake also drops, so that the braking process or control process is ended.

BezugszeichenlisteReference symbol list

 1 Hauptbremszylinder
 2 Bremsleitung
 3 Radbremse
 4 Pumpe
 5 erstes Bremsleitungsstück
 6 zweites Bremsleitungsstück
 7 Einlaßventil
 8 Auslaßventil
 9 Rücklaufleitung
13 Direktleitung
14 Rückschlagventil
20 Exzenter
21 Pumpenraum
22 Saugventil
23 Druckventil
25 Druckmittelvorratsbehälter
26 Nebenleitung
27 Vordruckventil
28 Umschaltventil
29 Steuerleitung 1 master brake cylinder
2 brake line
3 wheel brake
4 pump
5 first piece of brake line
6 second brake line piece
7 inlet valve
8 outlet valve
9 return line
13 direct line
14 check valve
20 eccentrics
21 pump room
22 suction valve
23 pressure valve
25 pressure medium reservoir
26 branch line
27 pre-pressure valve
28 changeover valve
29 control line

Claims (5)

1. Hydraulische Bremsanlage mit einer Einrichtung zur Regelung des Brems- und/oder Antriebsschlupfes bestehend aus einem pedalbetätigten Hauptbremszylinder (1) mindestens einer Radbremse (3), die über eine Bremsleitung mit dem Hauptbremszylinder (1) verbunden ist, wobei mit Betätigen des Pedals Druckmittel aus dem Hauptbremszylinder (1) über die Bremsleitung in den Radbremszylinder verdrängt wird, und mit einer Hydraulikpumpe (4), der derart in die Bremsleitung eingefügt ist, daß ein Anschluß der Pumpe an den Hauptbremszylinder und ein anderer Anschluß (Druckseite D) der Pumpe an den Radbremszylinder anschließt, dadurch gekennzeichnet, daß zwischen dem Hauptbremszylinder (1) und der Pumpe (4) ein Schaltventil (28) eingefügt ist, das in seiner ersten Position die Bremsleitung (2) offenhält und in seiner zweiten Position die Bremsleitung (2) in Richtung auf die Pumpe (4) sperrt, wobei das Schaltventil (28) vom Hauptzylinderdruck von der ersten in die zweite Schaltstellung schaltbar ist.1. Hydraulic brake system with a device for controlling the brake and / or traction slip consisting of a pedal-operated master brake cylinder ( 1 ) at least one wheel brake ( 3 ) which is connected to the master brake cylinder ( 1 ) via a brake line, pressure medium being actuated by actuating the pedal is displaced from the master brake cylinder ( 1 ) via the brake line into the wheel brake cylinder, and with a hydraulic pump ( 4 ) which is inserted into the brake line such that one connection of the pump to the master brake cylinder and another connection (pressure side D) of the pump the wheel brake cylinder connects, characterized in that a switching valve (28) is interposed between the master brake cylinder (1) and the pump (4), which holds open in its first position the brake line (2) and in its second position, the brake line (2) in Direction on the pump ( 4 ) blocks, the switching valve ( 28 ) from the master cylinder pressure from the first to the second switch position is switchable. 2. Bremsanlage nach Anspruch 1, dadurch gekennzeichnet, daß der Hauptbremszylinder (1) mit der Druckseite D der Pumpe über über eine Nebenleitung (26) verbunden ist, wobei in die Nebenleitung ein Vordruckventil (27), eingefügt ist, das zur Druckseite D hin öffnet. 2. Brake system according to claim 1, characterized in that the master cylinder ( 1 ) is connected to the pressure side D of the pump via a secondary line ( 26 ), with a pre-pressure valve ( 27 ) being inserted into the secondary line, leading to the pressure side D. opens. 3. Bremsanlage nach Anspruch 1, dadurch gekennzeichnet, daß das Umschaltventil (28) bei einem Hauptzylinderdruck von ca. 5 bar umschaltet.3. Brake system according to claim 1, characterized in that the switching valve ( 28 ) switches at a master cylinder pressure of approximately 5 bar. 4. Bremsanlage nach Anspruch 3, dadurch gekennzeichnet, daß der Öffnungsdruck des Vordruckventils (27) kleiner ist, als der Umschaltdruck des Umschaltventils (28).4. Brake system according to claim 3, characterized in that the opening pressure of the admission pressure valve ( 27 ) is smaller than the changeover pressure of the changeover valve ( 28 ). 5. Bremsanlage nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Rücklaufleitung an einem Druckmittelsammler ( z. B. einem Druckmittelvorratsbehälter 25), angeschlossen ist und, daß die Pumpe (4) über ein Saugventil (22) an den Vorratsbehälter (25) anschließt.5. brake system is connected to one of the preceding claims, characterized in that the return line to a pressure fluid collector (eg., A pressure fluid reservoir 25) and in that the pump (4) via a suction valve (22) to the reservoir (25) connects.
DE19904027565 1990-01-13 1990-08-31 Anti-slip hydraulic braking system for vehicle - involves insertion of pressure responsive switching valve Withdrawn DE4027565A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE19904027565 DE4027565A1 (en) 1990-01-13 1990-08-31 Anti-slip hydraulic braking system for vehicle - involves insertion of pressure responsive switching valve
JP3511624A JPH05501689A (en) 1990-08-31 1991-07-03 Hydraulic brake device equipped with brake slip and/or traction slip control means
US07/852,136 US5297862A (en) 1990-08-31 1991-07-03 Hydraulic brake system controlling slip
PCT/EP1991/001243 WO1992004215A1 (en) 1990-08-31 1991-07-03 Hydraulic brake system with brake and/or drive slip control device
DE59106626T DE59106626D1 (en) 1990-08-31 1991-07-03 HYDRAULIC BRAKE SYSTEM WITH A DEVICE FOR REGULATING THE BRAKE AND / OR DRIVE SLIP.
EP91912570A EP0498861B1 (en) 1990-08-31 1991-07-03 Hydraulic brake system with brake and/or drive slip control device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19904000837 DE4000837B4 (en) 1990-01-13 1990-01-13 Hydraulic brake system with a device for braking and / or traction control
DE19904027565 DE4027565A1 (en) 1990-01-13 1990-08-31 Anti-slip hydraulic braking system for vehicle - involves insertion of pressure responsive switching valve

Publications (1)

Publication Number Publication Date
DE4027565A1 true DE4027565A1 (en) 1992-03-05

Family

ID=25889034

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19904027565 Withdrawn DE4027565A1 (en) 1990-01-13 1990-08-31 Anti-slip hydraulic braking system for vehicle - involves insertion of pressure responsive switching valve

Country Status (1)

Country Link
DE (1) DE4027565A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5417480A (en) * 1992-03-12 1995-05-23 Aisin Seiki Kabushiki Kaisha Brake system for a motor vehicle
WO1998013243A1 (en) * 1996-09-23 1998-04-02 Itt Manufacturing Enterprises, Inc. Hydraulic brake system with hydraulic servo brake
WO2000034097A1 (en) * 1998-12-09 2000-06-15 Continental Teves Ag & Co. Ohg Hydraulic intensifier operating as a pressure intensifier

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3574416A (en) * 1967-10-31 1971-04-13 Philips Corp Antilock brake systems
US4401348A (en) * 1980-02-16 1983-08-30 Lucas Industries Limited Hydraulic anti-skid braking systems for vehicles
DE3601769A1 (en) * 1986-01-22 1987-07-23 Teves Gmbh Alfred Brake system with wheel slip control
DE3626679A1 (en) * 1986-08-07 1988-02-18 Teves Gmbh Alfred Brake system with slip control
DE3844126A1 (en) * 1987-12-29 1989-07-13 Akebono Brake Ind Brake fluid pressure control device
DE3903532A1 (en) * 1988-02-18 1989-08-31 Volkswagen Ag Hydraulic motor-vehicle brake system with an anti-lock control device
DE3819812A1 (en) * 1988-06-10 1989-12-21 Bosch Gmbh Robert ANTI-BLOCKING CONTROL SYSTEM

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3574416A (en) * 1967-10-31 1971-04-13 Philips Corp Antilock brake systems
US4401348A (en) * 1980-02-16 1983-08-30 Lucas Industries Limited Hydraulic anti-skid braking systems for vehicles
DE3601769A1 (en) * 1986-01-22 1987-07-23 Teves Gmbh Alfred Brake system with wheel slip control
DE3626679A1 (en) * 1986-08-07 1988-02-18 Teves Gmbh Alfred Brake system with slip control
DE3844126A1 (en) * 1987-12-29 1989-07-13 Akebono Brake Ind Brake fluid pressure control device
DE3903532A1 (en) * 1988-02-18 1989-08-31 Volkswagen Ag Hydraulic motor-vehicle brake system with an anti-lock control device
DE3819812A1 (en) * 1988-06-10 1989-12-21 Bosch Gmbh Robert ANTI-BLOCKING CONTROL SYSTEM

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5417480A (en) * 1992-03-12 1995-05-23 Aisin Seiki Kabushiki Kaisha Brake system for a motor vehicle
WO1998013243A1 (en) * 1996-09-23 1998-04-02 Itt Manufacturing Enterprises, Inc. Hydraulic brake system with hydraulic servo brake
US6220675B1 (en) 1996-09-23 2001-04-24 Continental Teves Ag & Co., Ohg Hydraulic brake system with hydraulic servo brake
WO2000034097A1 (en) * 1998-12-09 2000-06-15 Continental Teves Ag & Co. Ohg Hydraulic intensifier operating as a pressure intensifier

Similar Documents

Publication Publication Date Title
DE3107963C2 (en)
DE3624344C2 (en) Hydraulic brake system for motor vehicles
EP0623079B1 (en) Combined hydraulically operated brake installation for two-wheeled vehicles, and a two-wheeled vehicle with a brake installation of this kind
EP0418602B1 (en) Anti-lock device
EP0324103B1 (en) Brake installation with antilock and driving slip regulation
DE3215739A1 (en) DRIVE SLIP CONTROL
DE3940177A1 (en) BLOCK-PROTECTED HYDRAULIC BRAKE SYSTEM
DE1901477C3 (en) Device for preventing the locking of a vehicle wheel with a hydraulic brake system
DE3731295A1 (en) BRAKE PRESSURE CONTROL DEVICE FOR ANTI-BLOCKING SYSTEMS
DE3827366A1 (en) BLOCK-PROTECTED HYDRAULIC BRAKE SYSTEM
EP0482379A1 (en) Multi circuit hydraulic brake system, especially for motor vehicles
DE3635054A1 (en) BLOCK-PROTECTED BRAKE SYSTEM WITH DRIVE-SLIP CONTROL
DE3842370A1 (en) BLOCKING PROTECTION DEVICE FOR A VEHICLE BRAKE SYSTEM
WO1993021047A1 (en) Hydraulic brake system with brake-slip and drive-slip control
DE3910285A1 (en) HYDRAULIC BRAKE SYSTEM FOR MOTOR VEHICLES WITH A DEVICE FOR REGULATING THE DRIVE SLIP
EP0450002A1 (en) Anti-lock hydraulic braking system.
DE4104068A1 (en) BLOCK-PROTECTED, HYDRAULIC BRAKE SYSTEM
DE3606172C2 (en) Brake system with slip control
DE4028552A1 (en) Hydraulic brakes installation for motor vehicle - has servo pump fed via openbrakes circuit for non-driven wheels providing wheel-spincontrol
EP0498861B1 (en) Hydraulic brake system with brake and/or drive slip control device
DE3613470A1 (en) BRAKE SYSTEM WITH SLIP CONTROL FOR MOTOR VEHICLES WITH FRONT OR REAR WHEEL DRIVE
DE4015745A1 (en) BLOCK-PROTECTED, HYDRAULIC BRAKE SYSTEM
DE4027565A1 (en) Anti-slip hydraulic braking system for vehicle - involves insertion of pressure responsive switching valve
DE4241913A1 (en) Pressure controller for vehicle antilock braking circuit - incorporates switching valve circuit to give traction control function
DE19713084A1 (en) Brake pressure control device

Legal Events

Date Code Title Description
AF Is addition to no.

Ref country code: DE

Ref document number: 4000837

Format of ref document f/p: P

OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8127 New person/name/address of the applicant

Owner name: ITT AUTOMOTIVE EUROPE GMBH, 60488 FRANKFURT, DE

8110 Request for examination paragraph 44
8176 Proceedings suspended because of application no:

Ref document number: 4000837

Country of ref document: DE

Format of ref document f/p: P

8127 New person/name/address of the applicant

Owner name: CONTINENTAL TEVES AG & CO. OHG, 60488 FRANKFURT, D

8178 Suspension cancelled
8176 Proceedings suspended because of application no:

Ref document number: 4000837

Country of ref document: DE

Kind code of ref document: P

8130 Withdrawal
8178 Suspension cancelled