DE102008020857A1 - Electro-hydraulic vehicle brake system, has displacement pump including displacement piston and crank case in retaining body, where displacement piston exerts rotary displacement movement in crank case - Google Patents
Electro-hydraulic vehicle brake system, has displacement pump including displacement piston and crank case in retaining body, where displacement piston exerts rotary displacement movement in crank case Download PDFInfo
- Publication number
- DE102008020857A1 DE102008020857A1 DE102008020857A DE102008020857A DE102008020857A1 DE 102008020857 A1 DE102008020857 A1 DE 102008020857A1 DE 102008020857 A DE102008020857 A DE 102008020857A DE 102008020857 A DE102008020857 A DE 102008020857A DE 102008020857 A1 DE102008020857 A1 DE 102008020857A1
- Authority
- DE
- Germany
- Prior art keywords
- displacement
- brake system
- vehicle brake
- piston
- electrohydraulic vehicle
- 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- Withdrawn
Links
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 44
- 238000011017 operating method Methods 0.000 claims 1
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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
- 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
- B60T13/74—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 electrical assistance or drive
- B60T13/745—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 electrical assistance or drive acting on a hydraulic system, e.g. a master cylinder
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
Description
Die Erfindung betrifft ein elektrohydraulisches Fahrzeugbremssystem, in mehrkreisiger Ausführung, umfassend eine elektronische Steuereinheit (ECU), eine hydraulische Steuereinheit (HCU) umfassend einen Aufnahmekörper mit elektromagnetisch ansteuerbaren, hydraulischen Ein- und Auslassventilen zum Anschluß an Radbremsen mit Radbremszylindern, und mit einem Antrieb für eine Verdrängerpumpe, die einem Bremskreis zugeordnet und in der hydraulischen Steuereinheit (HCU) integriert vorgesehen ist, sowie mit Ventilmitteln und Kanälen, welche eine Umschaltung in einem Saugpfad und eine Umschaltung in einem Druckpfad jeder Verdrängerpumpe, insbesondere für eine Anpassung an unterschiedliche Regeleingriffe, ermöglichen.The The invention relates to an electrohydraulic vehicle brake system, in multicircular design, comprising an electronic control unit (ECU), a hydraulic Control unit (HCU) comprising a receiving body with electromagnetic controllable, hydraulic inlet and outlet valves for connection to wheel brakes with wheel brake cylinders, and with a drive for a positive displacement pump, associated with a brake circuit and in the hydraulic control unit (HCU) is integrated, as well as with valve means and channels which a changeover in a suction path and a changeover in one Pressure path of each positive displacement pump, especially for allow adaptation to different control interventions.
Großserientechnisch produzierte Fahrzeugbremssysteme umfassen überwiegend Radialkolbenpumpen mit oszillierenden Verdrängerpumpenkolben. In einigen bekannten Fahrzeugbremssystemen werden Zahnradpumpen eingesetzt, die sich dadurch auszeichnen, dass sie vergleichsweise geringe Pulsationen verursachen. Ein Nachteil ist eine sehr aufwändige, weil hochpräzise Fertigung vom Zahnradtrieb, wobei das Druckmedium Bremsflüssigkeit keine vorteilhaften Schmiereigenschaften aufweist.Mass Technically Vehicle brake systems produced mainly comprise radial piston pumps with oscillating positive displacement piston. In some known vehicle brake systems, gear pumps used, which are characterized by comparatively cause low pulsations. A disadvantage is a very elaborate, because high-precision Manufacture of the gear drive, wherein the pressure medium brake fluid no having advantageous lubricating properties.
Es ist eine Aufgabe der Erfindung ein neues Fahrzeugbremssystem mit verbesserter Energieversorgung zur Verfügung zu stellen, dessen Herstellungs- und Fertigungsaufwand reduziert ist.It It is an object of the invention to provide a new vehicle brake system improved energy supply, the production of which and manufacturing costs is reduced.
Ein gattungsgemäßes Fahrzeugbremssystem ist hinlänglich bekannt. Die Verdrängerpumpe des Fahrzeugbremssystems erfüllt in den genannten Anwendungsfällen unterschiedliche Funktionen. Bei ABS-Regeleingriffen wird ein schneller Druckabbau in den Radbremsen ermöglicht, indem ein Niederdruckspeicher gefüllt wird. Die Verdrängerpumpe dient der Leerförderung des Niederdruckspeichers, indem – gegen den Bremsdruck des Fahrers – das abgelassene Druckmittel vor die Radbremsen gefördert wird (Rückförderprinzip). Bei Fahrstabilitätseingriffen erfolgt durch Abänderung vom Saug- und Druckpfad ein fahrerunabhängiger Druckaufbau in einer oder mehreren RadbremsenOne generic vehicle brake system is sufficient known. The positive displacement pump of Vehicle brake system met in the mentioned applications different functions. With ABS control interventions, a faster Pressure reduction in the wheel brakes allows by filling a low-pressure accumulator. The positive displacement pump is used the empty conveyor the low - pressure accumulator, by - against the brake pressure of Driver - the drained Pressure medium before the wheel brakes is promoted (return flow principle). In driving stability operations done by amendment from the suction and pressure path a driver independent Pressure build-up in one or more wheel brakes
Die Aufgabe wird erfindungsgemäß gelöst, indem der Verdrängerkolben eine Verdrängungsbewegung unmittelbar direkt in dem Kurbelraum ausführt. Die Erfindung ist mit dem Vorteil verknüpft, dass im Vergleich mit konventionellen Fahrzeugbremsanlagenkolbenpumpen ein Wandler zur Wandlung einer rotatorischen Antriebsdrehbewegung in eine translatorische Kolbenbewegung obsolet ist. Durch Rationalisierung einer Getriebestufe werden mechanische Verluste verringert.The The object is achieved according to the invention by the displacer a displacement movement directly executes in the crankcase. The invention is with linked to the advantage that in comparison with conventional vehicle brake system piston pumps a converter for converting a rotary drive rotary motion is obsolete in a translatory piston movement. By rationalization a gear stage mechanical losses are reduced.
Weitere Einzelheiten der Erfindung gehen aus der Beschreibung und der Zeichnung hervor. In der Zeichnung zeigt:Further Details of the invention will become apparent from the description and the drawings out. In the drawing shows:
Der
Bremskraftverstärker
Der
Bremskreis verläuft
im Einzelnen vom Hauptzylinder
Nachstehend
wird auf die Einzelheiten der Verdrängerpumpe
Der
Verdrängerpumpe
Jeder
Arbeitsraum ist sichelförmig
und wird von der Kurbelraumwandung
Zur
Ventilation ist je Arbeitsraum
Bei
einer bevorzugten Ausführungsform
der Erfindung ist jedem Trennkolben
In
weiterer Ausgestaltung der Erfindung weist das zusätzliche
Mittel zumindest einen Verbindungskanal
- 11
- Fahrzeugbremsanlagevehicle brake system
- 22
- Hauptzylindermaster cylinder
- 33
- BremskraftverstärkerBrake booster
- 44
- Bremsleitungbrake line
- 55
- Radbremsewheel brake
- 66
- Radbremsewheel brake
- 77
- Trennventilisolation valve
- 88th
- BremszweigleitungBrake branch line
- 99
- BremszweigleitungBrake branch line
- 1010
- Einlaßventilintake valve
- 1111
- Einlaßventilintake valve
- 1212
- RücklaufzweigReturn branch
- 1313
- RücklaufzweigReturn branch
- 1414
- Auslaßventiloutlet valve
- 1515
- Auslaßventiloutlet valve
- 1616
- RücklaufleitungReturn line
- 1717
- NiederdruckspeicherLow-pressure accumulator
- 1818
- Saugleitungsuction
- 1919
- Verdrängerpumpedisplacement
- 2020
- Antriebswelledrive shaft
- 2121
- Verdrängerkolbendisplacer
- 2222
- Kurbelraumcrankcase
- 2323
- Aufnahmekörperreceiving body
- 2424
- KurbelraumwandungKurbelraumwandung
- 25a, b25a, b
- Arbeitsraumworking space
- 2626
- Trennkolbenseparating piston
- 2727
- Trennkolbenseparating piston
- 2828
- Druckfedercompression spring
- 2929
- Druckfedercompression spring
- 3030
- WellendichtringShaft seal
- 3131
- AntriebswellenlagerDrive shaft bearings
- 3232
- Saugventilsuction
- 3333
- Saugventilsuction
- 3434
- Druckventilpressure valve
- 3535
- Druckventilpressure valve
- 3636
- Druckpfadprint path
- 3737
- Druckpfadprint path
- 3838
- TrennkolbenrückraumSeparating piston rear space
- 3939
- TrennkolbenrückraumSeparating piston rear space
- 4040
- Verbindungskanalconnecting channel
- 4141
- Umschaltventilswitching valve
- 4242
- Umschaltventilswitching valve
- HCUHCU
- Hydraulische Steuereinheithydraulic control unit
- SPSP
- Saugpfadsuction path
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008020857A DE102008020857A1 (en) | 2008-04-05 | 2008-04-25 | Electro-hydraulic vehicle brake system, has displacement pump including displacement piston and crank case in retaining body, where displacement piston exerts rotary displacement movement in crank case |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008017374.6 | 2008-04-05 | ||
DE102008017374 | 2008-04-05 | ||
DE102008020857A DE102008020857A1 (en) | 2008-04-05 | 2008-04-25 | Electro-hydraulic vehicle brake system, has displacement pump including displacement piston and crank case in retaining body, where displacement piston exerts rotary displacement movement in crank case |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008020857A1 true DE102008020857A1 (en) | 2009-10-08 |
Family
ID=41051561
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102008020857A Withdrawn DE102008020857A1 (en) | 2008-04-05 | 2008-04-25 | Electro-hydraulic vehicle brake system, has displacement pump including displacement piston and crank case in retaining body, where displacement piston exerts rotary displacement movement in crank case |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102008020857A1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19804207B4 (en) * | 1997-02-03 | 2006-09-14 | Denso Corp., Kariya | Braking device for a vehicle |
-
2008
- 2008-04-25 DE DE102008020857A patent/DE102008020857A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19804207B4 (en) * | 1997-02-03 | 2006-09-14 | Denso Corp., Kariya | Braking device for a vehicle |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
R012 | Request for examination validly filed | ||
R012 | Request for examination validly filed |
Effective date: 20150424 |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |