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DE4301287A1 - Slip-controlled hydraulic braking system for vehicle - Google Patents

Slip-controlled hydraulic braking system for vehicle

Info

Publication number
DE4301287A1
DE4301287A1 DE19934301287 DE4301287A DE4301287A1 DE 4301287 A1 DE4301287 A1 DE 4301287A1 DE 19934301287 DE19934301287 DE 19934301287 DE 4301287 A DE4301287 A DE 4301287A DE 4301287 A1 DE4301287 A1 DE 4301287A1
Authority
DE
Germany
Prior art keywords
suction valve
pump
pressure
valve
pressure accumulator
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Withdrawn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
DE19934301287
Other languages
German (de)
Inventor
Christoph Wagner
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
ITT Automotive Europe GmbH
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
Application filed by ITT Automotive Europe GmbH, Alfred Teves GmbH filed Critical ITT Automotive Europe GmbH
Priority to DE19934301287 priority Critical patent/DE4301287A1/en
Publication of DE4301287A1 publication Critical patent/DE4301287A1/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Withdrawn legal-status Critical Current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
    • B60T8/40—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
    • B60T8/4068—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 the additional fluid circuit comprising means for attenuating pressure pulsations
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • F04B11/0008—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F04B49/24—Bypassing
    • F04B49/243—Bypassing by keeping open the inlet valve

Landscapes

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

Abstract

The suction valve (1) of a pump (2) is actuated by an accumulator element (4) movably arranged in a low pressure accumulator (3). An actuation member (5) is provided between the suction valve and the movable accumulator element.The suction valve is aligned coaxially with the low pressure accumulator. This takes the form of a spring accumulator in which the accumulator element is arranged as an axially movable piston provided with a projection which can lie against the suction valve.

Description

Die Erfindung betrifft eine hydraulische Bremsanlage mit Blockierschutzregelung nach dem Oberbegriff des Anspruchs 1.The invention relates to a hydraulic brake system Anti-lock control according to the preamble of claim 1.

In der DE 39 13 352 A1 ist bereits eine schlupfgeregelte Bremsanlage beschrieben, die zum Zwecke der Geräuschredu­ zierung während der Druckmodulation zwischen den Druckmodu­ lationsventilen und der Druckseite der Pumpe schwingungs­ dämpfende elastomere Energiespeicherelemente mit definier­ ten Verformungseigenschaften aufweist, die sich jedoch hin­ sichtlich der hierdurch variablen Volumenaufnahme des Brem­ sensystems auf die Bremsbetätigung bei konventioneller Bremsung nachteilig auswirken können.DE 39 13 352 A1 already has a slip-controlled system Brake system described for the purpose of noise reduction adornment during the print modulation between the print modules tion valves and the pressure side of the pump vibration damping elastomeric energy storage elements with defin has deformation properties, but this obviously the variable volume absorption of the brake sensystems to brake actuation with conventional Braking can adversely affect.

Ferner ist aus der DE 38 42 602 A1 eine Pumpe bekannt, die zwischen den Anschlüssen des Pumpendruckventils, des Haupt­ zylinders und der Druckmodulationsventile im Pumpengehäuse eine Geräuschdämpfungskammer aufweist, die als Einschraub­ patrone eine spezielle Druckmittelführung im Pumpengehäuse bewirkt. Nachteilig ist jedoch hierbei die voluminöse Kon­ struktion der Geräuschdämpfungskammer, wodurch sich der Raumbedarf der Pumpe zusätzlich vergrößert.Furthermore, a pump is known from DE 38 42 602 A1 between the connections of the pump pressure valve, the main cylinder and the pressure modulation valves in the pump housing has a noise damping chamber, which as a screw cartridge has a special pressure medium guide in the pump housing causes. The disadvantage here is the voluminous Kon structure of the noise damping chamber, whereby the Pump space requirement also increased.

Daher ist es die Aufgabe der Erfindung, eine schlupfgere­ gelte Bremsanlage der vorgenannten Art hinsichtlich des Ge­ räuschverhaltens, des Bedienungskomforts und des Energie­ verbrauches durch Verwendung einfacher Mitteln zu optimie­ ren. It is therefore the object of the invention to provide a more slip apply brake system of the aforementioned type with regard to the Ge noise behavior, ease of use and energy to optimize consumption by using simple means ren.  

Diese Aufgabe wird erfindungsgemäß durch die den Patentan­ spruch 1 kennzeichnenden Merkmale gelöst, wonach das Saug­ ventil der Pumpe von einem im Niederdruckspeicher beweglich angeordneten Speicherelement mechanisch betätigbar ist.This object is achieved by the patent Proverb 1 characteristic features solved, after which the suction The valve of the pump can be moved by one in the low pressure accumulator arranged storage element is mechanically actuated.

Durch die in den Unteransprüchen aufgezeigten Maßnahmen sind zweckmäßige Ausbildungen der Erfindung angegeben, die im Zusammenhang mit den weiteren Merkmalen und Vorteilen der Erfindung nachfolgend anhand einer Zeichnung näher dar­ gestellt und erläutert werden.By the measures indicated in the subclaims expedient developments of the invention are given, the in connection with the other features and advantages the invention with reference to a drawing be put and explained.

Die Fig. 1 zeigt eine konstruktive Ausführungsform des Er­ findungsgedankens sowie eine zur Funktionserläuterung der schlupfgeregelten Bremsanlage zweckmäßige Darstellung des an der Pumpe angeschlossenen Bremshydraulikkreises. Zum Zwecke der Darstellung aller relevanten Pumpenfunktionsele­ mente in einer zweidimensionalen Ansicht, sind die hierzu erforderlichen unterschiedlichen Schnittebenen der einzel­ nen Komponenten zu einer einzigen Ansicht eines Pumpenge­ häuses vereinigt worden. Die damit normalerweise im Pumpen­ gehäuse räumlich unterschiedlichen Anordnungen der Druck­ mittelkanäle, der Saug- und Druckventile und der Nieder­ druckspeicher ist hierbei zur Erläuterung der miteinander zusammenwirkenden Elemente überschaubar dargestellt. Fig. 1 shows a constructive embodiment of the inventive concept and a functional explanation of the slip-controlled brake system expedient representation of the brake hydraulic circuit connected to the pump. For the purpose of displaying all relevant pump functional elements in a two-dimensional view, the different sectional planes required for this purpose of the individual components have been combined to form a single view of a pump housing. The normally spatially different arrangements of the pressure medium channels, the suction and pressure valves and the low pressure accumulator in the pump housing are shown in a manageable way to explain the interacting elements.

Die Pumpe 2 weist ein paar radial zum Antriebsexzenter 9 verteilte Pumpkolben 7 auf, die mittels eines Koppelrings 10 an einem auf dem Antriebsexzenter 9 aufgesetzten Nadel­ lager 11 anliegen. Jeder Pumpkolben 7 ist sowohl mit einem Saugventil 1 wie auch mit einem Druckventil 12 versehen. Im dritten Quadranten III des Zeichnungsblattes ist die erfin­ dungsgemäße koaxiale Anordnung des Saugventils 1 zusammen mit dem Niederdruckspeicher 3 gezeigt, die in einer Stufen­ bohrung 6 des Pumpengehäuses eingeführt sind. Der als Spei­ cherelement 4 wirksame Speicherkolben ist mit einem stift­ förmigen Betätigungsglied 5 versehen, das sich in die Stu­ fenbohrung 6 des Pumpengehäuses bis vor das Ventilschließ­ glied des Saugventils 1 erstreckt. Das Betätigungsglied 5 kann auch am Saugventil 1 befestigt sein. Das Saugventil 1 steht über einen Kanal mit dem den Pumpkolben 7 aufnehmen­ den Kompressionsraum 8 in Verbindung. Das im zweiten Qua­ dranten II der Zeichnung abgebildete Druckventil 12 steht ebenfalls wie das Saugventil 1 jeweils über einen Kanal mit dem Kompressionsraum 8 in Verbindung. Das Ventilschließ­ glied des Druckventils 12 ist ebenso wie das des Saugven­ tils 1 von einer Druckfeder beaufschlagt, jedoch miteinan­ der entgegengesetzter Wirkungsrichtung und dementsprechend entgegengesetzter Ventilsitzeinbaulage. Das Druckventil 12 ist analog zum Saugventil 1 in einer Patrone 13 angeordnet, wobei beide Patronen 13 in die zugehörigen Stufenbohrungen 6 eingeschraubt sind. Die das Druckventil 12 aufnehmende Patrone 13 weist überdies in Richtung des zum Hauptzylinder 14 bzw. zur Radbremse 15 führenden Kanals 16 ein in Rich­ tung des Druckventils 12 sperrendes Manschettenrückschlag­ ventil 17 auf, um Rückströmungen vom Hauptzylinder 14 in eine Geräuschdämpfungskammer 18 zu vermeiden. Die Geräusch­ dämpfungskammer 18 ist Bestandteil der Druckventilpatrone 13. Die Saugventilpatrone 13 ist als einfaches Drehteil ausgeführt, das in die Stufenbohrung 6 des Pumpengehäuses eingeschraubt oder verstemmt gehalten ist. Die schematische Darstellung des an der Pumpe 2 angeschlossenen Hydraulik­ kreises der schlupfgeregelten Bremsanlage dient ausschließ­ lich der Funktionserläuterung des Erfindungsgedankens, ohne darüberhinaus konstruktive Elemente herleiten zu müssen. The pump 2 has a pair of pump pistons 7 which are distributed radially to the drive eccentric 9 and which by means of a coupling ring 10 bear against a needle bearing 11 placed on the drive eccentric 9 . Each pump piston 7 is provided with a suction valve 1 as well as with a pressure valve 12 . In the third quadrant III of the drawing sheet, the coaxial arrangement of the suction valve 1 according to the invention is shown together with the low-pressure accumulator 3 , which are introduced into a stepped bore 6 of the pump housing. The effective as SpeI cherelement 4 storage piston is provided with a pin-shaped actuator 5 which extends into the Stu fenbohrung 6 of the pump housing until the valve closing member of the suction valve 1 . The actuator 5 can also be attached to the suction valve 1 . The suction valve 1 is connected via a channel with which the pump piston 7 receives the compression chamber 8 . The pressure valve 12 shown in the second quadrant II of the drawing is also, like the suction valve 1 , connected to the compression chamber 8 via a channel. The valve closing member of the pressure valve 12 is, like that of the Saugven valve 1, acted upon by a compression spring, but miteinan in the opposite direction of action and accordingly opposite valve seat installation position. The pressure valve 12 is arranged analogously to the suction valve 1 in a cartridge 13 , both cartridges 13 being screwed into the associated stepped bores 6 . The cartridge 13 accommodating the pressure valve 12 also has in the direction of the channel 16 leading to the master cylinder 14 or the wheel brake 15, a locking device 17 closing the pressure valve 12 in the direction of the pressure valve in order to avoid backflows from the master cylinder 14 into a noise damping chamber 18 . The noise damping chamber 18 is part of the pressure valve cartridge 13 . The suction valve cartridge 13 is designed as a simple rotating part which is screwed into the stepped bore 6 of the pump housing or is held caulked. The schematic representation of the hydraulic circuit connected to the pump 2 of the slip-controlled brake system is used exclusively to explain the function of the inventive concept without having to derive any constructive elements.

Nachfolgend wird die Funktionsweise der erfindungsgemäßen Elemente der Bremsanlage näher beschrieben. Vor Beginn ei­ ner Bremsschlupfregelung befindet sich der hydraulisch druckentlastete Speicherkolben (Speicherelement 4) des Nie­ derdruckspeichers 3 mit seinem Betätigungsglied 5 in der das Saugventil 1 öffnenden Grundstellung. Das zwischen der Pumpensaugseite und der Radbremse 15 angeschlossene Druck­ modulationsventil 19 verharrt zunächst während der Brems­ löse- oder schlupffreien Betriebsbremsstellung geschlossen. Mit Beginn der Bremsschlupfregelung läuft die Pumpe 2 an. Dies geschieht mit relativ geringem Leistungsbedarf sowie geräuschreduziert, da infolge des zunächst noch vom Spei­ cherkolben geöffneten Saugventils 1 die Pumpe keinen Druck aufbauen kann und entlang der Nullförderkennlinie arbeitet. Sobald zum Zwecke der Bremsdruckreduzierung das zwischen der Radbremse 15 und dem Saugventil 1 der Pumpe 2 angeord­ nete Druckmodulationsventil 19 (Auslaßventil) öffnet, ge­ langt das überschüssige Bremsdruckvolumen der Radbremse 15 sowohl zum Saugventil 1 wie auch in den Niederdruckspeicher 3. Der Speicherkolben fährt zwangsläufig gegen die Wirkung einer Druckfeder 20 in Ladeposition, womit das Saugventil 1 vom Betätigungsglied 5 entlastet wird und wobei zum Zwecke der Förderphase des Pumpkolbens 7 das Saugventil 1 ge­ schlossen ist. Damit kann das in den Kompressionsräumen 8 eingeschlossene Druckmittelvolumen über das Druckventil 12, über die Geräuschdämpfungskammer 18 und über das Manschet­ tenrückschlagventil 17 in Richtung des zwischen dem Haupt­ zylinder 14 und der Radbremse 15 befindlichen Druckmodula­ tionsventil 21 (Einlaßventil) gefördert werden. Zum Zwecke des erneuten Bremsdruckaufbaus in der Radbremse 15 öffnet das Einlaßventil den Zulauf zur Radbremse 15 und das Aus­ laßventil wird in seine Schließposition geschaltet. Es ge­ langt durch den Pumpenlauf das im Niederdruckspeicher 3 be­ vorratete Druckmittelvolumen in die Kompressionsräume 8 der Pumpe 2. Die Pumpe 2 fördert bis zum erneuten Öffnen des Saugventils 1 durch das Betätigungsglied 5 das überschüssi­ ge Druckmittelvolumen in den Hauptzylinder 14. Sobald das Betätigungsglied 5 das Saugventil 1 in einer permanenten Offenstellung hält, sinkt erneut die um den Anteil der Kom­ pressionsleistung erforderliche Antriebsleistung des Pum­ penmotors, da die Pumpenkolben 7 und damit der Antriebsex­ zenter 9 nahezu kräftefrei sind, das heißt es wirken nur Kräfte infolge von Reibung und Ventilation (saugseitige Überschiebe- und Drosselverluste). Hierdurch sind die an­ sonsten während der permanenten Druckmittelförderung der Pumpe entstehenden Druckpulsationen nahezu völlig elimi­ niert. Gleiches gilt für die blockierschutzgeregelte Druck­ haltephase, so daß jeweils in der Druckaufbau- und Druck­ haltephase (Auslaßventil geschlossen) bei entleertem Nie­ derdruckspeicher 3 erhebliche Vorteile durch die Reduktion der Pumpenantriebsleistung und durch die Reduktion des Ge­ räuschverhaltens für die Bremsanlage erzielt werden.The functioning of the elements of the brake system according to the invention is described in more detail below. Before the start of a brake control system, the hydraulic pressure-relieved accumulator piston (accumulator element 4 ) of the never derdruckspeicher 3 with its actuator 5 in the opening position of the suction valve 1 . The pressure modulation valve 19 connected between the pump suction side and the wheel brake 15 initially remains closed during the brake-free or slip-free service brake position. Pump 2 starts at the start of the brake slip control. This is done with a relatively low power requirement and reduced noise, since, due to the suction valve 1 initially still open from the storage piston, the pump cannot build up pressure and works along the zero-delivery characteristic. As soon as for the purpose of brake pressure reduction between the wheel brake 15 and the suction valve 1 of the pump 2 angeord designated pressure modulation valve 19 (exhaust valve) opens, the excess brake pressure volume of the wheel brake 15 reaches both the suction valve 1 and the low-pressure accumulator 3 . The storage piston inevitably moves against the action of a compression spring 20 in the loading position, which relieves the suction valve 1 from the actuator 5 and wherein the suction valve 1 is closed for the purpose of the delivery phase of the pump piston 7 . Thus, the pressure medium volume enclosed in the compression spaces 8 can be promoted via the pressure valve 12 , the noise damping chamber 18 and the sleeve check valve 17 in the direction of the pressure modulation valve 21 (inlet valve) located between the master cylinder 14 and the wheel brake 15 . For the purpose of renewed brake pressure build-up in the wheel brake 15 , the inlet valve opens the inlet to the wheel brake 15 and the outlet valve is switched to its closed position. It reaches ge through the pump run in the low pressure accumulator 3 be stored pressure medium volume in the compression spaces 8 of the pump 2nd The pump 2 promotes the excess pressure medium volume in the master cylinder 14 until the suction valve 1 is opened again by the actuator 5 . As soon as the actuator 5 holds the suction valve 1 in a permanent open position, the drive power of the pump motor, which is required by the proportion of the compression power, drops again, since the pump pistons 7 and thus the drive eccentric 9 are almost force-free, that is to say there are only forces due to Friction and ventilation (transfer and throttling losses on the suction side). As a result, the pressure pulsations that otherwise occur during the permanent pressure medium delivery of the pump are almost completely eliminated. The same applies to the anti-lock controlled pressure holding phase, so that in the pressure build-up and pressure holding phase (exhaust valve closed) when the pressure accumulator 3 is empty, considerable advantages can be achieved by reducing the pump drive power and by reducing the noise behavior for the brake system.

BezugszeichenlisteReference list

 1 Saugventil
 2 Pumpe
 3 Niederdruckspeicher
 4 Speicherkolben
 5 Betätigungsglied
 6 Stufenbohrung
 7 Pumpkolben
 8 Kompressionsraum
 9 Antriebsexzenter
10 Koppelring
11 Nadellager
12 Druckventil
13 Patrone
14 Hauptzylinder
15 Radbremse
16 Kanal
17 Manschettenrückschlagventil
18 Geräuschdämpfungskammer
19 Druckmodulationsventil
20 Druckfeder
21 Druckmodulationsventil 1 suction valve
2 pump
3 low pressure accumulators
4 storage pistons
5 actuator
6 stepped bore
7 pump pistons
8 compression space
9 drive eccentrics
10 coupling ring
11 needle bearings
12 pressure valve
13 cartridge
14 master cylinders
15 wheel brake
16 channel
17 cuff check valve
18 noise reduction chamber
19 pressure modulation valve
20 compression spring
21 pressure modulation valve

Claims (5)

1. Hydraulische Bremsanlage mit Blockierschutzregelung, mit einem Hauptzylinder, einer am Hauptzylinder angeschlos­ senen Bremsleitung, die eine hydraulische Verbindung zu wenigstens einer Radbremse aufweist, mit einer Rücklauf­ leitung, die die Radbremse mit einem Niederdruckspeicher verbindet, mit in der Brems- und Rücklaufleitung einge­ setzten Druckmodulationsventilen sowie mit einer an der Rücklaufleitung angeschlossenen Pumpe, die über ein Saugventil mit dem Niederdruckspeicher verbindbar ist und über ein Druckventil sowohl mit dem Hauptzylinder wie auch mit der zur Radbremse führenden Bremsleitung verbindbar ist, dadurch gekennzeichnet, daß das Saugventil (1) der Pumpe (2) von einem im Nieder­ druckspeicher (3) beweglich angeordneten Speicherelement (4) betätigbar ist.1. Hydraulic brake system with anti-lock control, with a master cylinder, a brake line connected to the master cylinder, which has a hydraulic connection to at least one wheel brake, with a return line that connects the wheel brake with a low-pressure accumulator, inserted in the brake and return line Pressure modulation valves and a pump connected to the return line, which can be connected to the low-pressure accumulator via a suction valve and can be connected to the master cylinder as well as to the brake line leading to the wheel brake via a pressure valve, characterized in that the suction valve ( 1 ) of the pump ( 2 ) can be actuated by a storage element ( 4 ) movably arranged in the low pressure accumulator ( 3 ). 2. Hydraulische Bremsanlage nach Anspruch 1, dadurch ge­ kennzeichnet, daß zwischen dem Saugventil (1) und dem bewegbaren Speicherelement (4) ein Betätigungs­ glied (5) angeordnet ist.2. Hydraulic brake system according to claim 1, characterized in that an actuating member ( 5 ) is arranged between the suction valve ( 1 ) and the movable storage element ( 4 ). 3. Hydraulische Bremsanlage nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Saugventil (1) ko­ axial zum Niederdruckspeicher (3) ausgerichtet ist.3. Hydraulic brake system according to claim 1 or 2, characterized in that the suction valve ( 1 ) is aligned axially to the low-pressure accumulator ( 3 ). 4. Hydraulische Bremsanlage nach mindestens einem der vor­ hergehenden Ansprüche, dadurch gekennzeich­ net, daß der Niederdruckspeicher (3) als Federspeicher ausgeführt ist, in dem das Speicherelement (4) als ein axial beweglich geführter Speicherkolben angeordnet ist, und daß der Speicherkolben mit einem als Betätigungs­ glied (5) wirksamen Fortsatz versehen ist, der am Saug­ ventil (1) anlegbar ist.4. Hydraulic brake system according to at least one of the preceding claims, characterized in that the low-pressure accumulator ( 3 ) is designed as a spring accumulator, in which the storage element ( 4 ) is arranged as an axially movably guided storage piston, and that the storage piston with a Actuator ( 5 ) effective extension is provided, which can be applied to the suction valve ( 1 ). 5. Hydraulische Bremsanlage nach mindestens einem der vor­ hergehenden Ansprüche 1 bis 4, dadurch gekenn­ zeichnet, daß das Saugventil (1) mit dem Nieder­ druckspeicher (3) in einer gemeinsamen Stufenbohrung (6) der Pumpe (2) eingesetzt ist, die quer zur Achse eines mit wenigstens einem Pumpkolben (7) versehenen Kompres­ sionsraums (8) einmündet.5. Hydraulic brake system according to at least one of the preceding claims 1 to 4, characterized in that the suction valve ( 1 ) with the low pressure accumulator ( 3 ) is used in a common stepped bore ( 6 ) of the pump ( 2 ) which is transverse to Axis of a compression chamber ( 8 ) provided with at least one pump piston ( 7 ) opens.
DE19934301287 1993-01-13 1993-01-13 Slip-controlled hydraulic braking system for vehicle Withdrawn DE4301287A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19934301287 DE4301287A1 (en) 1993-01-13 1993-01-13 Slip-controlled hydraulic braking system for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19934301287 DE4301287A1 (en) 1993-01-13 1993-01-13 Slip-controlled hydraulic braking system for vehicle

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5567128A (en) * 1992-01-24 1996-10-22 Itt Automotive Europe Gmbh Pump containing a pressure valve
WO1997005381A1 (en) * 1995-07-27 1997-02-13 Itt Automotive Europe Gmbh Pump
US5618085A (en) * 1994-11-10 1997-04-08 Robert Bosch Gmbh Hydraulic housing block for hydraulic brake control of vehicle brakes
DE19708142A1 (en) * 1997-02-28 1998-09-03 Itt Mfg Enterprises Inc Hydraulic braking system especially for automobile
DE19708887A1 (en) * 1997-03-05 1998-09-10 Itt Mfg Enterprises Inc Brake pump, especially for hydraulic vehicle brake system
DE19814835A1 (en) * 1998-04-02 1999-10-07 Itt Mfg Enterprises Inc Electronically controlled brake system with memory
WO2000005114A1 (en) * 1998-07-24 2000-02-03 Lucas Industries Public Limited Company Hydraulic control unit for a motor vehicle braking system
US6030185A (en) * 1996-07-11 2000-02-29 Itt Manufacturing Enterprises Inc. Radial piston pump

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3807452A1 (en) * 1988-03-08 1989-09-28 Teves Gmbh Alfred Brake system
DE3842602A1 (en) * 1988-12-17 1990-06-28 Teves Gmbh Alfred Hydraulic pump
DE3913352A1 (en) * 1989-04-22 1990-10-25 Teves Gmbh Alfred Anti-skid hydraulic brake system - has elastic damping elements to reduce vibration
DE4015664A1 (en) * 1990-05-16 1991-11-21 Teves Gmbh Alfred HYDRAULIC ANTI-BLOCK BRAKE SYSTEM
WO1992005990A1 (en) * 1990-10-05 1992-04-16 Alfred Teves Gmbh Braking installation with a device for regulating both the braking and drive slip
DE4110528A1 (en) * 1991-03-30 1992-10-01 Teves Gmbh Alfred BLOCK-PROTECTED HYDRAULIC BRAKE SYSTEM

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3807452A1 (en) * 1988-03-08 1989-09-28 Teves Gmbh Alfred Brake system
DE3842602A1 (en) * 1988-12-17 1990-06-28 Teves Gmbh Alfred Hydraulic pump
DE3913352A1 (en) * 1989-04-22 1990-10-25 Teves Gmbh Alfred Anti-skid hydraulic brake system - has elastic damping elements to reduce vibration
DE4015664A1 (en) * 1990-05-16 1991-11-21 Teves Gmbh Alfred HYDRAULIC ANTI-BLOCK BRAKE SYSTEM
WO1992005990A1 (en) * 1990-10-05 1992-04-16 Alfred Teves Gmbh Braking installation with a device for regulating both the braking and drive slip
DE4110528A1 (en) * 1991-03-30 1992-10-01 Teves Gmbh Alfred BLOCK-PROTECTED HYDRAULIC BRAKE SYSTEM

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5567128A (en) * 1992-01-24 1996-10-22 Itt Automotive Europe Gmbh Pump containing a pressure valve
US5618085A (en) * 1994-11-10 1997-04-08 Robert Bosch Gmbh Hydraulic housing block for hydraulic brake control of vehicle brakes
WO1997005381A1 (en) * 1995-07-27 1997-02-13 Itt Automotive Europe Gmbh Pump
US6030185A (en) * 1996-07-11 2000-02-29 Itt Manufacturing Enterprises Inc. Radial piston pump
DE19708142A1 (en) * 1997-02-28 1998-09-03 Itt Mfg Enterprises Inc Hydraulic braking system especially for automobile
DE19708887A1 (en) * 1997-03-05 1998-09-10 Itt Mfg Enterprises Inc Brake pump, especially for hydraulic vehicle brake system
DE19814835A1 (en) * 1998-04-02 1999-10-07 Itt Mfg Enterprises Inc Electronically controlled brake system with memory
WO2000005114A1 (en) * 1998-07-24 2000-02-03 Lucas Industries Public Limited Company Hydraulic control unit for a motor vehicle braking system
US6363719B2 (en) 1998-07-24 2002-04-02 Lucas Industries Public Limited Company Hydraulic control unit for a motor vehicle braking system

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