SE455076B - HYDRAULIC BRAKE SYSTEM WITH CONTROL EQUIPMENT TO PREVENT BRAKE LOADING AND WHEEL SPIN - Google Patents

HYDRAULIC BRAKE SYSTEM WITH CONTROL EQUIPMENT TO PREVENT BRAKE LOADING AND WHEEL SPIN

Info

Publication number
SE455076B
SE455076B SE8405117A SE8405117A SE455076B SE 455076 B SE455076 B SE 455076B SE 8405117 A SE8405117 A SE 8405117A SE 8405117 A SE8405117 A SE 8405117A SE 455076 B SE455076 B SE 455076B
Authority
SE
Sweden
Prior art keywords
brake
pressure pump
low
pump
brake system
Prior art date
Application number
SE8405117A
Other languages
Swedish (sv)
Other versions
SE8405117D0 (en
SE8405117L (en
Inventor
L Kirstein
Original Assignee
Bosch Gmbh Robert
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 Bosch Gmbh Robert filed Critical Bosch Gmbh Robert
Publication of SE8405117D0 publication Critical patent/SE8405117D0/en
Publication of SE8405117L publication Critical patent/SE8405117L/en
Publication of SE455076B publication Critical patent/SE455076B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/48—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition connecting the brake actuator to an alternative or additional source of fluid pressure, e.g. traction control systems
    • B60T8/4809—Traction control, stability control, using both the wheel brakes and other automatic braking systems
    • B60T8/4827—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems
    • B60T8/4863—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems closed systems
    • B60T8/4872—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems closed systems pump-back systems
    • 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
    • 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

Landscapes

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

Description

15 20 25 35 455 076 fördelen, att högtryckpumpen är kombinerad med en låg- tryckspump. Genom dess kombination med en lågtryckspump undviks undertryck i inloppet. Gasblâsor kan ej uppstå. 15 20 25 35 455 076 the advantage that the high-pressure pump is combined with a low-pressure pump. Due to its combination with a low pressure pump, negative pressure in the inlet is avoided. Gas bubbles can not occur.

Lägtryckspumpen kan genomströmmas av bromsvätska i båda riktningarna vid icke aktiverat hjulspinnskydd. Härigenom uppnås att vid lossade och även vid normalt arbetande brom- sar hindras ej genomströmningen av bromsvätska.The position pressure pump can be flowed through by brake fluid in both directions when the wheel spin protection is not activated. In this way it is achieved that when brakes are released and also when the brakes are normally operating, the flow of brake fluid is not impeded.

Slutligen är det en fördel att bromsledningarna kan ut- nyttjas dubbelt. För den av högtryckspumpen genomförda ackumulatorladdningen krävs ingen ytterligare ledning till påfyllningsbehâllaren.Finally, it is an advantage that the brake lines can be used twice. For the accumulator charge carried out by the high-pressure pump, no additional line is required to the filling tank.

Ritning Ett utföringsexempel av uppfinningen beskrivs nedan närmare under hänvisning till åtföljande ritning.Drawing An exemplary embodiment of the invention is described in more detail below with reference to the accompanying drawing.

Beskrivning av utföringsexemplet Ett hydrauliskt bromssystem har en hydraulisk tandem-huvud- cylinder l. Från denna utgår tvâ bromsledningar, av vilka den ena är förbunden med bromscylindrarna hos ej drivna fram- hjul och den andra bromsledningen 2 är förbunden med tvâ broms- cylindrar 3 och 4 hos två via en differential 5 drivna hjul 6 och 7. Framför hjulbromscylindrarna 3 och 4 är bromsledningen 2 förgrenad i två ledningsgrenar 2' och 2" i var och en av vilka en 3/3-vägmagnetventil 8 resp 9 är insatt som styrventil. Ge- nom var sin backventil 10 resp ll kan styrventilen 8 resp 9 kringgâs i riktning till huvudcylindern l.Description of the exemplary embodiment A hydraulic brake system has a hydraulic tandem master cylinder 1. From this emit two brake lines, one of which is connected to the brake cylinders of non-driven front wheels and the other brake line 2 is connected to two brake cylinders 3 and 4 of two wheels 6 and 7 driven via a differential 5 In front of the wheel brake cylinders 3 and 4, the brake line 2 is branched into two line branches 2 'and 2 "in each of which a 3/3-way solenoid valve 8 and 9, respectively, is inserted as a control valve. Through each non-return valve 10 and 11, respectively, the control valve 8 and 9, respectively, can be bypassed in the direction of the master cylinder 1.

Var och en av magnetventilerna 8, 9 har på ena sidan en an- slutning 12 resp 13 för en returledning 14 resp 15, som är förbunden med en högtryckpump 16, och på andra sidan en an- slutning 17 resp 18 för bromsledningsgrenarna 2' resp 2", till vilka högtryckspumpens 16 trycksida är ansluten via en tryckledning 19. a.. menu-_... gs 10 15 20 25 30 35 455 076 Returledningarna 14 och 15 leder via en gemensam retur- ledning 20 till en ackumulatorladdningsventil 21. Denna uppvisar en backventil 22, en överströmningsventil 23 och en lågtrycksackumulator 24.Each of the solenoid valves 8, 9 has on one side a connection 12 and 13 for a return line 14 and 15, respectively, which is connected to a high-pressure pump 16, and on the other hand a connection 17 and 18 for the brake line branches 2 'and 2 ", to which the pressure side of the high-pressure pump 16 is connected via a pressure line 19. a .. menu -_... gs 10 15 20 25 30 35 455 076 The return lines 14 and 15 lead via a common return line 20 to an accumulator charge valve 21. This has a non-return valve 22, an overflow valve 23 and a low-pressure accumulator 24.

I bromsledningen 2 finns en 3/2-vägs omkopplingsmagnet- ventil 25, vilket i sitt ena (visade) läge medger genom- strömning i bromsledningen 2 och i sitt andra, efter in- koppling av magneten uppnådda läge upprättar förbindelse mellan de till tryckledningen 19 anslutna bromslednings- grenarna 2' och 2" och en högtrycksackumulator 26 och tryckströmställare 27.In the brake line 2 there is a 3/2-way switching solenoid valve 25, which in its one (shown) position allows flow in the brake line 2 and in its second position, after switching on the magnet, establishes a connection between the pressure line 19 connected brake line branches 2 'and 2 "and a high pressure accumulator 26 and pressure switch 27.

Huvudcylindern 1 är på konventionellt sätt kombinerad med en påfyllningsbehållare 28, som är uppdelad i tvâ kam- rar 29 och 30, vilka båda via skilda ledningar 31 och 32 är anslutna till huvudcylindern l. I ledningen 31 är en lågtryckspump 33 insatt, vilken drivs av en elmotor 33' och vid stillastående medger trycklös genomströmning av bromsvätska i båda riktningarna. För att uppnå detta är den utformad som hydrodynamisk pump, dvs som centrifugal- pump eller vingrotorpump. I praktiken utföres ledningarna 31 och 32 som kanaler, lâgtryckspumpen 33 inmonteras di- rekt i påfyllningsbehållaren 28 och den elektriska driv- motorn 33" anordnas utanför påfyllningsbehâllaren 28, så- ledes “i det torra".The master cylinder 1 is combined in a conventional manner with a filling container 28, which is divided into two chambers 29 and 30, both of which are connected via separate lines 31 and 32 to the master cylinder 1. In the line 31 a low-pressure pump 33 is inserted, which is driven by an electric motor 33 'and at standstill allows pressureless flow of brake fluid in both directions. To achieve this, it is designed as a hydrodynamic pump, ie as a centrifugal pump or wing rotor pump. In practice, the lines 31 and 32 are designed as ducts, the low pressure pump 33 is mounted directly in the filling container 28 and the electric drive motor 33 is "arranged outside the filling container 28, thus" in the dry ".

Funktion Vid normal bromsning är genomströmning av bromsvätska genom lågtryckspumpen 33 och genom omkopplingsmagnetventilen 25 opåverkad.Function During normal braking, the flow of brake fluid through the low-pressure pump 33 and through the switching solenoid valve 25 is unaffected.

Om något av hjulen 6, 7 tenderar att låsa sig ger de vid hju- len anordnade, ej visade givarna signaler till motsvarande 3/3-vägs magnetstyrventil och denna ventil kopplar då om an- tingen till sitt andra läge (tryckhållning) eller till sitt tredje läge (trycksänkning). Samtidigt som denna magnetstyr- ventil omställes inkopplas även högtryckspumpen 16 för att 10 15 20 25 455 076 återmata avlastningsvätskemängden via bromsledningarna 2", 2 till huvudcylindern l.If any of the wheels 6, 7 tends to lock, the sensors arranged at the wheels, not shown, give signals to the corresponding 3/3-way solenoid control valve and this valve then switches either to its second position (pressure holding) or to its third position (pressure drop). At the same time as this solenoid control valve is switched on, the high-pressure pump 16 is also connected in order to feed back the amount of relief liquid via the brake lines 2 ", 2 to the master cylinder 1.

Om något av hjulen 6, 7, exempelvis hjulet 6, börjar spinna vid start avkänner dess givare detta fel och avger en signal till omkopplingsventilen 25 och till det ej spinnande hjulets 3/3-vägs magnetstyrventil 9. Ventilerna ställer om varigenom dels högtrycksackumulatorn 26 förbinds med bromsledningsgre- narna 2' och 2", dels också magnetstyrventilen 9 omställes till tryckhâllningsläge så att bromsvätskan nu kan nå det spinnande hjulets 6 bromscylinder 3 endast via den ej omställ- da magnetstyrventilen 8w Det andra hjulet 7 kan då avge driv- kraft och driva fordonet vidare. Den ifrågavarande trycknivån varieras i beroende av det konstaterade hjulspinnet med hjälp av en ej visad styrkrets.If any of the wheels 6, 7, for example the wheel 6, starts spinning at start, its sensor detects this error and gives a signal to the switching valve 25 and to the non-spinning wheel's 3/3-way solenoid control valve 9. The valves change, thereby connecting the high pressure accumulator 26 with the brake line branches 2 'and 2 ", partly also the solenoid control valve 9 is switched to the pressure holding position so that the brake fluid can now reach the brake cylinder 3 of the spinning wheel 6 only via the unadjusted solenoid control valve 8w. The pressure level in question is varied depending on the detected wheel spin by means of a control circuit (not shown).

Emellertid måste säkerställas att högtrycksackumulatorn 26 är laddad för hjulspinnregleringen. Detta uppnås i förening med lâgtryckspumpen 33, vilken användes för alstring av ett förtryck i sugledningen till högtryckspumpen.However, it must be ensured that the high pressure accumulator 26 is charged for the wheel spin control. This is achieved in conjunction with the low pressure pump 33, which is used to generate a pre-pressure in the suction line to the high-pressure pump.

.Fördelen hos denna anordning är speciellt dess driftsäkerhet.The advantage of this device is especially its reliability.

Den enligt uppfinningen använda hydrodynamiska lågtryckspumpen 33 förhindrar då ett kostnadsmässigt gynnsamt sätt att under- tryck uppstår i systemet.The hydrodynamic low-pressure pump 33 used according to the invention then prevents a cost-favorable way of underpressure from arising in the system.

Pumpen 33 i sig själv är genom sin enkla uppbyggnad likaledes mycket billig. ...riva-m-The pump 33 itself is also very cheap due to its simple construction. ... riva-m-

Claims (5)

10 15 20 25 Patentkrav 455 076Claim 455,076 1. Hydrauliskt bromssystem med en huvudcylinder (1), vilken är kombinerad med en päfyllningsbehàllare (28) och via en bromsledning (2, 2', 2") är förbunden med hjulbromscylindrar (3, 4), samt med reglerutrustning för att förhindra broms- låsning och hjulspinn, k ä n n e t e c systemet uppvisar en högtryckspump (16) k n a t av att broms- och en lågtrycks- pump (33) med en ackumulatorladdningsventil (21) och att lâgtryckspumpen (33) är anordnad i ett huvudcylindern (1), vilket är anslutet hjulbromscylindrar (3, 4).Hydraulic brake system with a master cylinder (1), which is combined with a filling container (28) and connected via a brake line (2, 2 ', 2 ") to wheel brake cylinders (3, 4), and to control equipment to prevent braking locking and wheel spin, the kennetec system has a high-pressure pump (16) characterized in that a brake and a low-pressure pump (33) with an accumulator charge valve (21) and that the low-pressure pump (33) is arranged in a master cylinder (1), which wheel brake cylinders (3, 4) are connected. 2. Bromssystem enligt krav 1, k ä n n att lågtryckspumpen (33) är anordnad i ningsbehållaren (28) och vid stillaståe genomströmning av bromsvätska.Braking system according to Claim 1, characterized in that the low-pressure pump (33) is arranged in the reservoir (28) and, when the brake fluid flows through at a standstill. 3. Bromssystem enligt krav 1 eller 2, n a t av att lågtryckspumpen (33) är e exempelvis en centrifugalpump eller vin stillastående är genomströmningsbar i bBrake system according to claim 1 or 2, n a t because the low-pressure pump (33) is e, for example a centrifugal pump or wine is stationary flowable in b 4. Bromssystem enligt något av kraven 1 n a t av att huvudcylinderns (1) pâfyl är utformad som hus för lâgtryckspumpenBrake system according to one of Claims 1 to 3, in that the filling of the master cylinder (1) is designed as a housing for the low-pressure pump. 5. Bromssystem enligt något av kraven 1 t e c k n a t av att en drivmotor (33' (33) pàfyllningsbehållaren (28). är utförd som elmotor och anordnad inlopp (31) till till drivhjulens (6, 7) e t e c k n a t av närheten av påfyll- nde medger trycklös k ä n n t.e C k ~ n hydrodynamisk pump, grotorpump, som vid åda riktningarna. - 3, k ä n n e t e c k - lningsbehállare (28) (33). _ 4, ) för lågtryckspumpen k ä n n e - "i det.torra“ utanförBrake system according to one of Claims 1, characterized in that a drive motor (33 '(33), the filling container (28), is designed as an electric motor and an inlet (31) is provided for the drive wheels (6, 7) marked by the vicinity of the filling allow. pressureless source C can be a hydrodynamic pump, large pump, as in the other directions. - 3, characteristic container (28) (33). _ 4,) for the low pressure pump can - "in the dry" outside
SE8405117A 1983-10-15 1984-10-12 HYDRAULIC BRAKE SYSTEM WITH CONTROL EQUIPMENT TO PREVENT BRAKE LOADING AND WHEEL SPIN SE455076B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833337545 DE3337545A1 (en) 1983-10-15 1983-10-15 HYDRAULIC BRAKE SYSTEM

Publications (3)

Publication Number Publication Date
SE8405117D0 SE8405117D0 (en) 1984-10-12
SE8405117L SE8405117L (en) 1985-04-16
SE455076B true SE455076B (en) 1988-06-20

Family

ID=6211925

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8405117A SE455076B (en) 1983-10-15 1984-10-12 HYDRAULIC BRAKE SYSTEM WITH CONTROL EQUIPMENT TO PREVENT BRAKE LOADING AND WHEEL SPIN

Country Status (5)

Country Link
JP (1) JPS6094861A (en)
DE (1) DE3337545A1 (en)
FR (1) FR2553360B1 (en)
GB (1) GB2147963B (en)
SE (1) SE455076B (en)

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DE3760861D1 (en) * 1986-01-31 1989-11-30 Nippon Denso Co Hydraulic pressure control system for motor vehicles
DE3612185A1 (en) * 1986-04-11 1987-10-22 Bosch Gmbh Robert ANTI-BLOCKING BRAKE SYSTEM
DE3626291C2 (en) * 1986-08-02 1995-04-20 Teves Gmbh Alfred Hydraulic brake system for motor vehicles and method for operating such a brake system
JPS6368450A (en) * 1986-09-10 1988-03-28 Akebono Brake Res & Dev Center Ltd Brake controller for self-propelled vehicle
DE3741310A1 (en) * 1987-12-05 1989-06-15 Bosch Gmbh Robert ANTI-BLOCKING PROTECTION AND SLIP CONTROL SYSTEM
DE3839178A1 (en) * 1988-01-26 1989-08-03 Daimler Benz Ag ANTI-BLOCKING SYSTEM
DE3814045C2 (en) * 1988-04-26 1996-08-08 Teves Gmbh Alfred Slip-controlled hydraulic brake system
DE3816073C2 (en) * 1988-05-11 1997-04-24 Bosch Gmbh Robert Anti-lock and traction control system
GB8812049D0 (en) * 1988-05-21 1988-06-22 Lucas Ind Plc Improvements in hydraulic anti-lock braking systems for vehicles
JP2980920B2 (en) * 1989-08-03 1999-11-22 日本エービーエス株式会社 Vehicle hydraulic brake control device
DE3931315A1 (en) * 1989-09-20 1991-03-28 Bosch Gmbh Robert ANTI-BLOCKING CONTROL SYSTEM
DE3936735A1 (en) * 1989-11-04 1991-05-08 Schaeff Karl Gmbh & Co HYDROSTATIC BRAKE POWER CONVERTER
DE4017700A1 (en) * 1990-06-01 1991-12-05 Bosch Gmbh Robert BRAKE SYSTEM
DE4037468A1 (en) * 1990-11-24 1992-05-27 Daimler Benz Ag METHOD FOR ACTIVATING THE HYDRAULIC SERVICE BRAKE SYSTEM OF A ROAD VEHICLE
DE4317760A1 (en) * 1993-05-28 1994-12-01 Teves Gmbh Alfred Brake system for motor vehicles with a device for regulating both the brake and the drive slip
DE4438927A1 (en) * 1994-10-31 1996-05-02 Teves Gmbh Alfred Hydraulic brake system for driving stability control
DE4446525A1 (en) * 1994-12-24 1996-06-27 Teves Gmbh Alfred Hydraulic motor vehicle brake system
DE19508331A1 (en) * 1995-03-09 1996-09-12 Teves Gmbh Alfred Braking system
DE19523946A1 (en) * 1995-07-05 1997-01-09 Teves Gmbh Alfred Slip-controlled hydraulic brake system with charge pump
DE19531317A1 (en) * 1995-08-25 1997-02-27 Teves Gmbh Alfred Actuating unit for a brake system with traction control and / or driving stability control
DE19619985A1 (en) * 1995-11-25 1997-05-28 Bosch Gmbh Robert Hydraulic vehicle brake system
DE19544442A1 (en) * 1995-11-29 1997-06-05 Teves Gmbh Alfred Brake system with a device for active braking
DE19603871A1 (en) * 1996-02-03 1997-08-07 Teves Gmbh Alfred Slip-controlled hydraulic brake system with charge pump
DE19618402A1 (en) * 1996-05-08 1997-11-13 Bosch Gmbh Robert Hydraulic vehicle brake system
DE19626289B4 (en) * 1996-07-01 2008-08-14 Continental Teves Ag & Co. Ohg Hydraulic brake system with a return pump
DE19632130A1 (en) * 1996-07-01 1998-01-08 Teves Gmbh Alfred Hydraulic brake system
DE19626304A1 (en) 1996-07-01 1998-01-08 Teves Gmbh Alfred Hydraulic brake system with a pre-charging device
JP2000513299A (en) * 1996-07-01 2000-10-10 アイティーティー・マニュファクチャリング・エンタープライジズ・インコーポレーテッド Hydraulic brake system
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DE10235932A1 (en) * 2002-08-06 2004-02-19 Continental Teves Ag & Co. Ohg Regulated hydraulic motor vehicle braking system, with connection from pump to main cylinder, feeds back part of pump output to main cylinder which feeds pressure medium to pump input at high pressure

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DE3040548A1 (en) * 1980-10-28 1982-05-27 Alfred Teves Gmbh, 6000 Frankfurt BRAKE SLIP CONTROL SYSTEM OF A HYDRAULIC VEHICLE BRAKING SYSTEM
DE3119803A1 (en) * 1981-05-19 1982-12-16 Robert Bosch Gmbh, 7000 Stuttgart Wheel slip control device
DE3127301C2 (en) * 1981-07-10 1983-08-04 Daimler-Benz Ag, 7000 Stuttgart "Propulsion control device for a vehicle that is also equipped with an anti-lock braking system.
DE3215739A1 (en) * 1982-04-28 1983-11-03 Robert Bosch Gmbh, 7000 Stuttgart DRIVE SLIP CONTROL

Also Published As

Publication number Publication date
SE8405117D0 (en) 1984-10-12
JPS6094861A (en) 1985-05-28
GB8425862D0 (en) 1984-11-21
GB2147963B (en) 1987-09-30
GB2147963A (en) 1985-05-22
FR2553360B1 (en) 1987-12-18
SE8405117L (en) 1985-04-16
FR2553360A1 (en) 1985-04-19
DE3337545A1 (en) 1985-04-25

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