DE102017222585B3 - Electronically slip-controllable vehicle brake system - Google Patents
Electronically slip-controllable vehicle brake system Download PDFInfo
- Publication number
- DE102017222585B3 DE102017222585B3 DE102017222585.8A DE102017222585A DE102017222585B3 DE 102017222585 B3 DE102017222585 B3 DE 102017222585B3 DE 102017222585 A DE102017222585 A DE 102017222585A DE 102017222585 B3 DE102017222585 B3 DE 102017222585B3
- Authority
- DE
- Germany
- Prior art keywords
- pump
- piston
- valve
- pressure medium
- controllable
- 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.)
- Active
Links
Images
Classifications
-
- 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
- F04B7/00—Piston machines or pumps characterised by having positively-driven valving
- F04B7/0076—Piston machines or pumps characterised by having positively-driven valving the members being actuated by electro-magnetic means
-
- 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
- B60T13/14—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 accumulators or reservoirs fed by pumps
- B60T13/142—Systems with master cylinder
- B60T13/145—Master cylinder integrated or hydraulically coupled with booster
- B60T13/146—Part of the system directly actuated by booster pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/662—Electrical control in fluid-pressure brake systems characterised by specified functions of the control system components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
-
- 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
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/042—Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force sensors
-
- 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
- B60T8/48—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
-
- 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
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Regulating Braking Force (AREA)
Abstract
Die Erfindung betrifft eine mit einer Kolbenpumpe (100) ausgestattete elektronisch schlupfregelbare Fahrzeugbremsanlage (250).Kolbenpumpen (100) haben einen zu einer Hubbewegung antreibbaren Pumpenkolben (106), welcher einen Arbeitsraum (148) der Kolbenpumpe (100) begrenzt, wobei dieser Arbeitsraum (148) in Abhängigkeit der Bewegungsrichtung des Pumpenkolbens (106) sein Volumen verändert.Eine Versorgung des Arbeitsraums (148) mit Druckmittel erfolgt elektronisch steuerbar.Eine elektronisch steuerbare Druckmittelversorgung erlaubt eine Beeinflussung der Steuerzeiten sowie des Strömungsquerschnitts und damit eine Dosierung des der Kolbenpumpe (100) zuströmenden Volumens an Druckmittel. Die Druckmittelversorgung einer Kolbenpumpe (100) ist dadurch an den jeweils vorliegenden Bedarfsfallanpassbar.The invention relates to an electronic slip-controllable vehicle brake system (250) equipped with a piston pump (100). Piston pumps (100) have a pump piston (106) which can be driven for a stroke movement and delimits a working space (148) of the piston pump (100), this working space ( 148) is changed as a function of the direction of movement of the pump piston (106). A supply of the working chamber (148) with pressure medium is electronically controllable. An electronically controllable pressure medium supply allows influencing of the control times and of the flow cross section and thus a metering of the piston pump (100). inflowing volume of pressure medium. The pressure medium supply of a piston pump (100) is thereby adaptable to the current case of need.
Description
Die Erfindung geht aus von einer elektronisch schlupfregelbaren Fahrzeugbremsanlage nach den Merkmalen des Oberbegriffs des Anspruchs 1.The invention relates to an electronically slip-controllable vehicle brake system according to the features of the preamble of claim 1.
Eine Kolbenpumpe einer elektronisch schlupfregelbaren Fahrzeugbremsanlage ist beispielsweise bekannt aus der
Diese bekannte Kolbenpumpe hat einen Pumpenkolben, der von einem externen Antriebselement zu einer Hubbewegung antreibbar und dazu in einem Pumpenzylinder verschiebbar aufgenommen ist. Dieser Pumpenzylinder begrenzt zusammen mit dem Pumpenkolben einen Arbeitsraum, welcher in Abhängigkeit von der Bewegungsrichtung des Pumpenkolbens sein Volumen zyklisch verkleinert oder vergrößert. Der Pumpenkolben bewegt sich dabei zwischen zwei Umkehrpositionen hin und her und ändert in den Umkehrpositionen jeweils seine Bewegungsrichtung. Ferner weist die Kolbenpumpe ein Pumpeneinlassventil auf, das eine Zuströmung von Druckmittel von einem Zulauf der Kolbenpumpe in den Arbeitsraum steuert. Verkleinert sich das Volumen des Arbeitsraums aufgrund der entsprechenden Bewegungsrichtung des Kolbens ist das Pumpeneinlassventil üblicher Weise geschlossen, so dass der vorwärts strebende Kolben das im Arbeitsraum befindliche Druckmittel verdichtet.
In dazu umgekehrter Bewegungsrichtung des Pumpenkolbens, also wenn das Volumen des Arbeitsraums zunimmt, ist das Pumpeneinlassventil demgegenüber offen, so dass aufgrund des von dem auswärts strebenden Pumpenkolben erzeugten Unterdrucks neues Druckmittel vom Zulauf in diesen Arbeitsraum einströmt.This known piston pump has a pump piston, which is drivable by an external drive element to a lifting movement and slidably received in a pump cylinder. This pump cylinder defines, together with the pump piston, a working chamber which, depending on the direction of movement of the pump piston, cyclically reduces or increases its volume. The pump piston moves back and forth between two reversal positions and changes its direction of movement in the reversal positions. Furthermore, the piston pump has a pump inlet valve which controls an inflow of pressure medium from an inlet of the piston pump into the working space. If the volume of the working chamber narrows due to the corresponding direction of movement of the piston, the pump inlet valve is usually closed, so that the forwardly advancing piston compresses the pressure medium located in the working space.
In the reverse direction of movement of the pump piston, so when the volume of the working chamber increases, the pump inlet valve is open, so that due to the negative pressure generated by the outwardly aspirated pump piston new pressure fluid flows from the inlet into this working space.
Derartige Kolbenpumpe werden vielfach in elektronisch schlupfregelbaren Fahrzeugbremsanlagen eingesetzt, um in den Bremskreisen solcher Fahrzeugbremsanlagen einen Bremsdruck aufzubauen und damit die angeschlossenen Radbremsen entsprechend zu beaufschlagen. Die Einlassventile dieser Kolbenpumpen sind bislang als mechanische, druckgesteuerte Rückschlagventile ausgebildet. Sie weisen dementsprechend einen vom Druck im Arbeitsraum entgegen der rückstellenden Kraft einer Einlassventilfeder betätigtes Ventilschließglied auf, welches einen, am Übergang in den Arbeitsraum ausgebildeten Ventilsitz steuert.Such piston pump are widely used in electronic slip-controllable vehicle brake systems to build a brake pressure in the brake circuits such vehicle brake systems and thus to apply the connected wheel brakes accordingly. The inlet valves of these piston pumps have hitherto been designed as mechanical, pressure-controlled check valves. Accordingly, they have a valve closing member actuated by the pressure in the working space against the restoring force of an inlet valve spring, which valve controls a valve seat formed at the transition into the working space.
Moderne Fahrzeugbremsanlagen nehmen zunehmend Komfort- und Sicherheitsfunktionen wahr und müssen deshalb in der Lage sein unterschiedliche Bremsvorgänge auch ohne Beteiligung des Fahrers auszuführen. Insbesondere bei Sicherheitsfunktionen, wie beispielsweise dem Fußgängerschutz, ist es notwendig, dass die Kolbenpumpen kurzfristig ein relativ großes Volumen an Druckmittel unter einem relativ geringen Druck fördern, um die Radbremsen zu betätigen, während bei Komfortfunktionen, wie beispielsweise der Abstandsregelung relativ
hohe Bremsdrücke bei verhältnismäßig geringer Druckmittelfördermenge bereitzustellen sind.Modern vehicle brake systems are increasingly perceiving comfort and safety functions and must therefore be able to perform different braking operations without the involvement of the driver. In particular, in safety functions, such as pedestrian protection, it is necessary that the piston pumps in the short term promote a relatively large volume of pressure medium under a relatively low pressure to operate the wheel brakes, while in comfort functions, such as the distance control relative
high brake pressures are to be provided at a relatively low pressure medium flow rate.
Diesem Anforderungsspektrum sind durch hydromechanisch betätigte Pumpeneinlassventile physikalische Grenzen gesetzt, da weder die Strömungsquerschnitte noch die Steuerzeiten derartiger Pumpeneinlassventile ausreichend an den Bedarf der jeweiligen Bremsvorgänge anpassbar sind. Den erläuterten Anforderungen steht darüber hinaus entgegen, dass bekannte Pumpeneinlassventile üblicher Weise bauraumsparend an den Pumpenkolben angeordnet und deshalb in ihren mechanischen Abmessungen begrenzt sind. Mit der Anordnung am Pumpenkolben folgen die Pumpeneinlassventile der Kolbenbewegung und sind deshalb auch den dabei auftretenden Beschleunigungs- und Verzögerungskräften ausgesetzt, was wiederum Einfluss auf die sich einstellenden Steuerzeiten nimmt. Schließlich haben die Pumpeneinlassventile wegen ihrer Bauraumbeschränkung auf die Druckmittelströmung eine drosselnde Wirkung, was sich insbesondere bei niedrigen Druckmitteltemperaturen nachteilig auswirken kann.Physically limited by hydromechanically actuated pump inlet valves, this range of requirements is limited by the fact that neither the flow cross sections nor the timing of such pump inlet valves are sufficiently adaptable to the requirements of the respective braking processes. The explained requirements are contrary to the fact that known pump inlet valves are usually arranged space-saving manner on the pump piston and therefore limited in their mechanical dimensions. With the arrangement on the pump piston, the pump inlet valves follow the piston movement and are therefore also exposed to the occurring acceleration and deceleration forces, which in turn influences the self-adjusting timing. Finally, the pump inlet valves have a throttling effect due to their space limitation on the pressure medium flow, which may have a disadvantageous effect, especially at low pressure medium temperatures.
Bei dem aus der
Beim Bremskreis nach
Selbiges trifft sinngemäß für die Bremsanlagen nach der einzigen Figur der
Bei der Kolbenpumpe nach der
Aufgabe der vorliegenden Erfindung ist es eine elektronisch schlupfregelbare Fahrzeugbremsanlage anzugeben, bei der eine Befüllung des Arbeitsraums der Kolbenpumpe mit Druckmittel zeitlich besser steuerbar und die Füllmenge genauer dosierbar vorgenommen werden kann als beim bekannten Stand der Technik. The object of the present invention is to specify an electronically slip-controllable vehicle brake system in which a filling of the working space of the piston pump with pressure medium can be better controlled over time and the filling quantity can be made more precisely metered than in the known prior art.
Die Druckmittelförderung lässt sich damit präziser den Erfordernissen der jeweiligen Bremsvorgänge anpassen. Weiterhin ermöglicht die Erfindung eine einfachere konstruktive Gestaltung für eine Kolbenpumpe und trägt damit zu einer Einsparung von Bauteilkosten und Bauraum bei.
Ferner verbessert die Erfindung das Betriebsgeräusch einer Kolbenpumpe.The pressure medium delivery can thus be more precisely adapted to the requirements of the respective braking processes. Furthermore, the invention enables a simpler structural design for a piston pump and thus contributes to a saving of component costs and space.
Furthermore, the invention improves the operating noise of a piston pump.
Weitere Vorteile oder vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und/oder aus der nachfolgenden Beschreibung.Further advantages or advantageous developments of the invention will become apparent from the dependent claims and / or from the following description.
Elektronisch steuerbare Magnetventile haben sich ebenso wie Piezzoventile zur Druckregelung in schlupfregelbaren Fahrzeugbremsanlagen bereits vielfach bewährt. Die Dynamik und die Präzision der mit ihnen durchführbaren Schaltzyklen sind auch zur Steuerung der Druckmittelversorgung einer Kolbenpumpe geeignet.Electronically controllable solenoid valves, as well as piezoelectric valves for pressure control in slip-controlled vehicle brake systems have already proven themselves many times. The dynamics and the precision of the switching cycles that can be carried out with them are also suitable for controlling the pressure medium supply of a piston pump.
Besonders wirksam sind elektronisch steuerbare Pumpeneinlassventile, wenn die von ihnen gesteuerte Druckmittelverbindung stromabwärts dieses Pumpeneinlassventils unmittelbar in den Arbeitsraum der Kolbenpumpe einmündet. Unter unmittelbarer Einmündung wird in diesem Zusammenhang verstanden, dass die Druckmittelverbindung z.B. keine abzweigenden Querverbindungen und/oder Stellen aufweist an denen die Druckmittelströmung umgelenkt wird. Abzweig- oder Umlenkstellen wirken nämlich als Strömungswiderstände, die eine exakte Steuerung der Steuerzeiten der Pumpeneinlassventile und/oder eine genaue Dosierung der Versorgung einer Kolbenpumpe mit Druckmittel über eine Steuerung des Strömungsquerschnitts der Pumpeneinlassventile beeinträchtigen können.Electronically controllable pump inlet valves are particularly effective if the pressure medium connection controlled by them opens directly into the working chamber of the piston pump downstream of this pump inlet valve. By direct confluence it is understood in this context that the pressure medium connection is e.g. no branching cross connections and / or points at which the pressure medium flow is deflected. In fact, branching or deflection points act as flow resistances which can impair an exact control of the control times of the pump inlet valves and / or an exact metering of the supply of a piston pump with pressure medium via a control of the flow cross section of the pump inlet valves.
Elektronisch ansteuerbare Pumpeneinlassventile, die getrennt vom Pumpenkolben angeordnet sind, bieten den Vorteil, dass der Pumpenkolben dadurch konstruktiv einfacher und kompakter darstellbar ist. Dies hat wie erwähnt vorteilhafte Auswirkungen auf die Kosten und die Abmessungen einer Kolbenpumpe. Zudem sind größere Strömungsquerschnitte darstellbar.Electronically controllable pump inlet valves, which are arranged separately from the pump piston, offer the advantage that the pump piston is structurally simpler and more compact. As mentioned, this has beneficial effects on the cost and dimensions of a piston pump. In addition, larger flow cross sections can be displayed.
Elektronisch schlupfregelbaren Fahrzeugbremsanlagen sind üblicher Weise mit sogenannten Hochdruckschaltventilen ausgestattet, um eine Druckmittelverbindung zwischen einem vom Fahrer betätigbaren Hauptbremszylinder und einer Saugseite einer Kolbenpumpe zu steuern. Dies erfolgt zum Beispiel wenn das aus den Radbremsen im Rahmen einer Bremsdruckregelung abgelassene Druckmittel nicht ausreichen sollte, um einen vom Fahrer vorgegebenen Bremswunsch bei einem nachfolgenden Bremsvorgang in einen entsprechenden Bremsdruck umzusetzen. Vorgeschlagen wird, dass zukünftig ein solches Hochdruckschaltventil die Funktion des Pumpeneinlassventils übernimmt und die Druckmittelversorgung der Kolbenpumpe bedarfsgerecht steuert. Das hat den Vorteil, dass keine zusätzlichen elektronisch steuerbaren Pumpeneinlassventile eingesetzt werden müssen, sondern dass ohnehin bei einer schlupfregelbaren Fahrzeugbremsanlage vorhandenen Bauteilen diese Funktion übertragen werden kann. Elektronisch schlupfregelbare Fahrzeugbremsanlagen erfindungsgemäßer Bauart sind demnach mit Kolbenpumpen ausrüstbar, die ganz ohne ein Pumpeneinlassventil auskommen.Electronically slip-controllable vehicle brake systems are usually equipped with so-called high-pressure switching valves in order to control a pressure medium connection between a driver-operable master cylinder and a suction side of a piston pump. This occurs, for example, when the pressure fluid released from the wheel brakes in the context of a brake pressure control should not be sufficient to convert a braking request specified by the driver into a corresponding brake pressure in a subsequent braking operation. It is proposed that in the future such a high-pressure switching valve takes over the function of the pump inlet valve and controls the pressure medium supply of the piston pump as needed. This has the advantage that no additional electronically controllable pump inlet valves must be used, but that in any case present in a slip-controllable vehicle brake system, this function can be transferred. Electronically slip-controllable vehicle brake systems according to the invention design can therefore be equipped with piston pumps, which manage without a pump inlet valve.
Ausführungsbeispiele der Erfindung sind in der nachfolgenden Beschreibung detailliert erläutert und in der Zeichnung dargestellt. Gezeigt ist in
-
1 schematisch vereinfacht eine Kolbenpumpe im Längsschnitt und in -
2 ein Hydraulikschaltplan einer elektronisch schlupfregelbaren Fahrzeugbremsanlage in zwei Ausführungsvarianten.
-
1 schematically simplifies a piston pump in longitudinal section and in -
2 a hydraulic circuit diagram of an electronic slip-controllable vehicle brake system in two variants.
Die in
Eine Betätigung des Pumpenkolbens
Ein Pumpenauslass
Auf Höhe der Filterhülse
Er wird von einem Pumpeneinlassventil
vorgesehen.At the height of the
He is from a
intended.
Es ist davon auszugehen, dass die Filterhülse
Dieser Arbeitsraum
In entgegengesetzter Bewegungsrichtung des Pumpenkolbens
Die
Die Bremskreise
Jeder der Bremskreise
Im Bremskreis
Die beiden Bremskreise nach
Eine elektronische Ansteuerbarkeit des Pumpeneinlassventils
Wird dagegen ein hoher Druck in einer der Radbremsen
Insgesamt ermöglicht es die Erfindung demnach die Druckmitteversorgung eines Druckerzeugers
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017222585.8A DE102017222585B3 (en) | 2017-12-13 | 2017-12-13 | Electronically slip-controllable vehicle brake system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017222585.8A DE102017222585B3 (en) | 2017-12-13 | 2017-12-13 | Electronically slip-controllable vehicle brake system |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102017222585B3 true DE102017222585B3 (en) | 2019-05-29 |
Family
ID=66442724
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102017222585.8A Active DE102017222585B3 (en) | 2017-12-13 | 2017-12-13 | Electronically slip-controllable vehicle brake system |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102017222585B3 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19700806B4 (en) | 1996-07-16 | 2011-03-03 | Robert Bosch Gmbh | Hydraulic brake system for a motor vehicle |
DE102014200670A1 (en) | 2014-01-16 | 2015-07-16 | Robert Bosch Gmbh | Hydraulic vehicle brake system with a connection device |
DE102014221097A1 (en) | 2014-10-17 | 2016-04-21 | Robert Bosch Gmbh | piston pump |
DE102014221894A1 (en) * | 2014-10-28 | 2016-04-28 | Volkswagen Aktiengesellschaft | Apparatus and method for generating a control signal for a vehicle |
DE102014222573A1 (en) | 2014-11-05 | 2016-05-12 | Robert Bosch Gmbh | Hydraulic device of a vehicle brake system |
DE102016206758A1 (en) | 2016-04-21 | 2017-10-26 | Robert Bosch Gmbh | Electronically pressure-controllable vehicle brake system and method for controlling an electronically pressure-controllable vehicle brake system |
-
2017
- 2017-12-13 DE DE102017222585.8A patent/DE102017222585B3/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19700806B4 (en) | 1996-07-16 | 2011-03-03 | Robert Bosch Gmbh | Hydraulic brake system for a motor vehicle |
DE102014200670A1 (en) | 2014-01-16 | 2015-07-16 | Robert Bosch Gmbh | Hydraulic vehicle brake system with a connection device |
DE102014221097A1 (en) | 2014-10-17 | 2016-04-21 | Robert Bosch Gmbh | piston pump |
DE102014221894A1 (en) * | 2014-10-28 | 2016-04-28 | Volkswagen Aktiengesellschaft | Apparatus and method for generating a control signal for a vehicle |
DE102014222573A1 (en) | 2014-11-05 | 2016-05-12 | Robert Bosch Gmbh | Hydraulic device of a vehicle brake system |
DE102016206758A1 (en) | 2016-04-21 | 2017-10-26 | Robert Bosch Gmbh | Electronically pressure-controllable vehicle brake system and method for controlling an electronically pressure-controllable vehicle brake system |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE102011075269B4 (en) | Method and device for controlling a valve | |
WO2000073658A1 (en) | Piston pump | |
WO2001000990A1 (en) | Piston pump | |
EP2205865B1 (en) | Piston pump for conveying a fluid and associated braking system | |
EP1774176B1 (en) | Piston pump with improved pressure build-up dynamics | |
EP0358743B1 (en) | Brake system | |
EP1392962B1 (en) | Fuel injection device with pressure translation device and pressure translation device | |
EP2212167A1 (en) | Hydraulic piston pump | |
DE102017222546A1 (en) | Piston pump for conveying pressure medium in a pressure medium circuit | |
WO1997005381A1 (en) | Pump | |
DE102014221097A1 (en) | piston pump | |
EP3134302B1 (en) | Slip-controllable vehicle brake system | |
DE102017222585B3 (en) | Electronically slip-controllable vehicle brake system | |
EP1537300B1 (en) | Hydraulic valve actuator for actuating a gas exchange valve | |
DE102006061462A1 (en) | Electro hydraulic pump system, particularly for vehicle baking system, has slip control and hydraulic system of electro hydraulic pump system is assigned pump with multiple conveying devices | |
DE102008054421A1 (en) | Fuel injector for use in motor vehicle, has bar including actuator-side end that extends into low pressure range and is hydraulically coupled with actuator, where circular seat is provided at input side of injection nozzle | |
EP1485585A1 (en) | Device for controlling a gas exchange valve | |
DE19809592B4 (en) | piston pump | |
WO1991008130A1 (en) | Brake pressure regulating system for brake installations | |
DE10049909A1 (en) | Piston pump for ABS hydraulic brake system has at least tow inlet valves in parallel in hydraulic circuit | |
DE102016204788A1 (en) | valve assembly | |
DE3936217A1 (en) | VEHICLE BRAKE SYSTEM WITH ANTI-BLOCKING DEVICE | |
DE102012211106A1 (en) | Fuel high-pressure piston pump | |
DE102011108207A1 (en) | Valve controller for hydraulic machine operated as e.g. hydraulic motor, has high pressure seat valve fixed upstream to workspace, and compensating valve and low pressure valve that are integrated to valve unit | |
DE19918123A1 (en) | Piston pump has two pistons each with re-setting chamber, with volumes increased/decreased by piston stroke movements |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
R012 | Request for examination validly filed | ||
R016 | Response to examination communication | ||
R016 | Response to examination communication | ||
R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final |