WO1999051477A1 - Blockiergeschützte kraftfahrzeug-bremsanlage - Google Patents
Blockiergeschützte kraftfahrzeug-bremsanlage Download PDFInfo
- Publication number
- WO1999051477A1 WO1999051477A1 PCT/EP1999/002127 EP9902127W WO9951477A1 WO 1999051477 A1 WO1999051477 A1 WO 1999051477A1 EP 9902127 W EP9902127 W EP 9902127W WO 9951477 A1 WO9951477 A1 WO 9951477A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- vacuum
- pump
- brake system
- lock brake
- valve
- Prior art date
Links
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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
-
- 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
- B60T8/48—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
- 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
- B60T8/4881—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems closed systems pump-back systems having priming means
-
- 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
Definitions
- the invention relates to an anti-lock motor vehicle brake system for traction control and / or driving stability control according to the preamble of claim 1.
- Brake systems are known from the prior art, in which the return pump is precharged to shorten the response time during traction slip control or driving stability control.
- DE 41 28 091 C2 shows an anti-lock motor vehicle brake system for traction control and / or driving stability control, in which a pre-pressure generator is arranged in the pressure medium container of the system, but the delivery volume is limited.
- a pre-pressure generator In order to supply the return pump on its suction side with an increased volume of pressure and brake fluid in the event of traction control or driving stability control, it must be pumped from the brake fluid reservoir through the master brake cylinder and the brake force line to the suction side of the pump by means of a pre-pressure generator.
- DE 40 29 207 AI describes an anti-lock brake system for traction control and driving stability control, which provides the required admission pressure on the suction side of the return pump by means of a second feed pump. 2 -
- a third option for supplying the return pump with additional brake fluid consists of an automatically actuated brake booster. During traction control or driving stability control, this is actuated without driver intervention and is therefore able to supply the return pump with additional brake fluid volume.
- the object of the present invention is to present an anti-lock brake system of the type described which manages with cheaper and less complex assemblies for precharging the return pump.
- the principle of the invention is based on integrating a prefilling system, which has at least one first vacuum reservoir, in the hydraulic unit of the system.
- the at least one first vacuum reservoir arranged in the hydraulic circuit of the hydraulic unit ensures that the suctioned brake fluid volume flows evenly, whereby a maximum delivery rate of the pump is achieved.
- a second vacuum accumulator is also integrated into the hydraulic unit of the system to support the first vacuum accumulator in order to achieve a uniform flow of the suctioned brake fluid volume.
- the first vacuum accumulator is directly on the pump suction chamber and the second vacuum accumulator is direct arranged behind the first electrical switching valve.
- both vacuum accumulators take over the suction of the brake fluid volume from the line of the master brake cylinder.
- the first vacuum accumulator located on the suction chamber of the return pump takes over the volume required for closing the suction valve at the end of the suction cycle, thus making the necessary brake fluid volume directly available on the suction side of the pump for the start of the next suction cycle.
- the second vacuum accumulator arranged behind the first electrical changeover valve takes over the aspirated liquid column and thereby compensates for the pressure peak, which would otherwise penetrate to the suction side of the pump due to the inertia of the liquid column.
- the measures shown suppress the acceleration and deceleration components of the volume flow caused by the suction and ejection of the brake fluid by the pump, thereby equalizing the volume flow.
- the mean time value of the volume flow on the suction side corresponds to the delivery rate of the pump. Accordingly, the delivery rate is increased considerably by the equalization of the volume flow.
- Another advantageous effect of the volume flow equalization is that the decreasing delivery capacity of the pump at low temperatures due to the increasing flow resistance by providing - 4 -
- Fig. 1 shows an advantageous embodiment of the motor vehicle brake system according to the invention using a hydraulic circuit diagram
- Fig. 2 shows an advantageous constructive solution of the brake system according to Fig.l in a section with the arrangement of the first vacuum accumulator (18 in Fig.l) on the suction chamber of the return pump.
- the brake system according to the invention shown in Fig. 1 has two brake circuits I and II, the structure of which is completely identical, so that the following description of one of the two brake circuits 1.11 also applies to the other.
- the brake system shown essentially consists of a brake pressure sensor 1, to which wheel brake cylinders 3, 4 are connected via hydraulic lines (not specified) and a hydraulic unit 2 connected between the brake pressure sensor 1 and the wheel brakes 2.
- the assignment of the wheel brake cylinders 3, 4 to the individual brake circuits 1, 11 is made in the usual way such that the first wheel brake cylinder 3 is either assigned to one wheel of a vehicle axle and the other wheel brake cylinder 4 is assigned to the diagonally opposite wheel of the other vehicle axle (diagonal division of the brake circuits) or both wheel brake cylinders 3, 4 are assigned to the same vehicle axle (Black and white division of the brake circuits).
- the first wheel brake cylinder 3 is either assigned to one wheel of a vehicle axle and the other wheel brake cylinder 4 is assigned to the diagonally opposite wheel of the other vehicle axle (diagonal division of the brake circuits) or both wheel brake cylinders 3, 4 are assigned to the same vehicle axle (Black and white division of the brake circuits).
- the pressure transmitter 1 which can be actuated by the driver of the motor vehicle by means of a brake pedal 29, consists of a pneumatic brake booster 5 which is followed by a master brake cylinder 6, the pressure chambers 14 of which are connected to a pressure medium reservoir 7.
- the hydraulic unit 2 has a motor pump unit, which consists of a hydraulic return pump 13 driven by an electric motor 8, the suction side of which is connected to the pressure chamber 14 of the master brake cylinder 6 via a first check valve 20 and an electromagnetically actuated first valve in the form of a switching valve 9.
- a first vacuum accumulator 17 is arranged between the first check valve 20 and the switching valve 9. From the pressure side of the return pump 13, the pressure medium flows via a second check valve 22 and a damping chamber (not shown) to a hydraulic node 21. Connected to this are both a line section 26 leading to the first wheel brake cylinder 3 and a line section 27 leading to the second wheel brake cylinder 4
- a hydraulic line 31 connects the pressure side of the return pump 13 to the tandem master cylinder 3.
- a second valve which is preferably designed as an electromagnetically actuated isolation valve 10 and which has both a third check valve 34 and a pressure relief valve 28 are connected in parallel.
- a second vacuum accumulator 18 is arranged on the hydraulic line 31 on the drawing to the suction side of the pump 13.
- a parallel connection of an inlet valve 11 with a fourth serves to modulate the pressure applied in the first wheel brake cylinder 3 - 6 -
- a second parallel connection of a second inlet valve 15 with a sixth check valve 24 and a second outlet valve 16 are provided, the mentioned parallel valve circuit is inserted in the line section 27 and the outlet valve 16 for the purpose of a wheel brake pressure reduction creates a connection between the second wheel brake cylinder 4 and the low pressure accumulator 19.
- both a pressure build-up and a pressure build-up can take place in the wheel brake cylinders 3, 4 by appropriate actuation of the brake pressure sensor 1 via the open isolating valve 10 and the open inlet valves 11 and 15.
- the isolating valve 10 When entering any external braking process, e.g. a traction control or driving stability control, the isolating valve 10 is closed and the switching valve 9 is opened. From this point in time, the return pump 13, which is precharged by the pressure built up by the first and second vacuum accumulators 17 and 18, serves as a pressure supplier for the pressure build-up in the wheel brake cylinders 3, 4.
- the return pump 13 which is precharged by the pressure built up by the first and second vacuum accumulators 17 and 18, serves as a pressure supplier for the pressure build-up in the wheel brake cylinders 3, 4.
- the pressure builds up via the open inlet valve 11, 15.
- a pressure-maintaining phase is achieved by switching the inlet valve 11, 15, while a pressure reduction is carried out by switching the outlet valve 12, 16 with the inlet valve 11, 15 still closed.
- the pressure curve required for the regulation is generated with the help of pressure build-up, holding and reduction phases.
- the switching valve 9 is closed and the isolating valve 10 is opened.
- the pressure medium discharged into the low pressure accumulator 19 and the pressure medium volume from the wheel brake cylinders 3 and 4 are conveyed back into the master cylinder 6 by the return pump 13.
- the vacuum reservoir 17 is shown here as a cartridge 35 and is screwed into the pump housing 30 in front of the check valve 20 on the pump suction side in the housing 30.
- two differently constructed vacuum accumulators 17 can be used.
- a vacuum accumulator 17 with a pot-shaped membrane 36 is used.
- a vacuum accumulator 17 with a flat membrane 32 is shown on the right side. Thanks to their elastic membrane, both types of storage function simultaneously as a damper. The pulsating brake fluid impinging on the elastic membrane is calmed by it and the flow is evened out.
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)
- Hydraulic Control Valves For Brake Systems (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59903831T DE59903831D1 (de) | 1998-04-07 | 1999-03-29 | Blockiergeschützte kraftfahrzeug-bremsanlage |
JP2000542213A JP2002510580A (ja) | 1998-04-07 | 1999-03-29 | アンチロック式自動車用ブレーキ装置 |
EP99919151A EP1068122B1 (de) | 1998-04-07 | 1999-03-29 | Blockiergeschützte kraftfahrzeug-bremsanlage |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19815468 | 1998-04-07 | ||
DE19815468.2 | 1998-04-07 | ||
DE19841152.9 | 1998-09-09 | ||
DE19841152A DE19841152A1 (de) | 1998-04-07 | 1998-09-09 | Blockiergeschützte Kraftfahrzeug-Bremsanlage |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999051477A1 true WO1999051477A1 (de) | 1999-10-14 |
Family
ID=26045322
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1999/002127 WO1999051477A1 (de) | 1998-04-07 | 1999-03-29 | Blockiergeschützte kraftfahrzeug-bremsanlage |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1068122B1 (de) |
JP (1) | JP2002510580A (de) |
WO (1) | WO1999051477A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007068702A1 (de) * | 2005-12-12 | 2007-06-21 | Continental Teves Ag & Co. Ohg | Kraftradbremsanlage |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004060080B4 (de) * | 2004-07-08 | 2015-02-05 | Continental Teves Ag & Co. Ohg | Kraftfahrzeug-Bremsanlage |
KR101359341B1 (ko) * | 2012-03-13 | 2014-02-11 | 주식회사 만도 | 통합 전자제어 유압제동 시스템 |
KR101418325B1 (ko) | 2012-03-13 | 2014-07-10 | 주식회사 만도 | 통합 전자제어 유압제동 시스템 |
KR101359338B1 (ko) * | 2012-03-13 | 2014-02-11 | 주식회사 만도 | 통합 전자제어 유압제동 시스템 |
KR101418328B1 (ko) * | 2012-03-19 | 2014-07-10 | 주식회사 만도 | 통합 전자제어 유압제동 시스템 |
KR101350850B1 (ko) * | 2012-05-25 | 2014-01-24 | 주식회사 만도 | 전자제어 브레이크 시스템 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3906530A1 (de) * | 1988-02-05 | 1990-09-06 | Teves Gmbh Alfred | Blockiergeschuetzte, druckmittelbetaetigte bremsanlage mit antriebsschlupfregelung |
DE4001421A1 (de) * | 1990-01-19 | 1991-07-25 | Teves Gmbh Alfred | Schlupfgeregelte, hydraulische bremsanlage |
DE4039661A1 (de) * | 1990-12-12 | 1992-06-17 | Bosch Gmbh Robert | Hydraulische bremsanlage mit einer blockierschutz- und antriebsschlupfregeleinrichtung, insbesondere fuer kraftfahrzeuge |
DE4213199A1 (de) * | 1992-04-22 | 1993-10-28 | Teves Gmbh Alfred | Hydraulische Bremsanlage mit Bremsschlupf- und Antriebsschlupfregelung |
DE4415651C1 (de) * | 1994-05-04 | 1995-04-27 | Daimler Benz Ag | Bremsdruck-Steuereinrichtung |
-
1999
- 1999-03-29 JP JP2000542213A patent/JP2002510580A/ja not_active Withdrawn
- 1999-03-29 WO PCT/EP1999/002127 patent/WO1999051477A1/de active IP Right Grant
- 1999-03-29 EP EP99919151A patent/EP1068122B1/de not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3906530A1 (de) * | 1988-02-05 | 1990-09-06 | Teves Gmbh Alfred | Blockiergeschuetzte, druckmittelbetaetigte bremsanlage mit antriebsschlupfregelung |
DE4001421A1 (de) * | 1990-01-19 | 1991-07-25 | Teves Gmbh Alfred | Schlupfgeregelte, hydraulische bremsanlage |
DE4039661A1 (de) * | 1990-12-12 | 1992-06-17 | Bosch Gmbh Robert | Hydraulische bremsanlage mit einer blockierschutz- und antriebsschlupfregeleinrichtung, insbesondere fuer kraftfahrzeuge |
DE4213199A1 (de) * | 1992-04-22 | 1993-10-28 | Teves Gmbh Alfred | Hydraulische Bremsanlage mit Bremsschlupf- und Antriebsschlupfregelung |
DE4415651C1 (de) * | 1994-05-04 | 1995-04-27 | Daimler Benz Ag | Bremsdruck-Steuereinrichtung |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007068702A1 (de) * | 2005-12-12 | 2007-06-21 | Continental Teves Ag & Co. Ohg | Kraftradbremsanlage |
US7971941B2 (en) | 2005-12-12 | 2011-07-05 | Continental Teves Ag & Co. Ohg | Motorcycle brake system |
Also Published As
Publication number | Publication date |
---|---|
JP2002510580A (ja) | 2002-04-09 |
EP1068122B1 (de) | 2002-12-18 |
EP1068122A1 (de) | 2001-01-17 |
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