SE500672C2 - Brake system for utility vehicles - Google Patents

Brake system for utility vehicles

Info

Publication number
SE500672C2
SE500672C2 SE8704266A SE8704266A SE500672C2 SE 500672 C2 SE500672 C2 SE 500672C2 SE 8704266 A SE8704266 A SE 8704266A SE 8704266 A SE8704266 A SE 8704266A SE 500672 C2 SE500672 C2 SE 500672C2
Authority
SE
Sweden
Prior art keywords
brake
pressure
valve
control
wheel
Prior art date
Application number
SE8704266A
Other languages
Swedish (sv)
Other versions
SE8704266L (en
SE8704266D0 (en
Inventor
Hermann-Josef Goebels
Reiner Emig
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 SE8704266D0 publication Critical patent/SE8704266D0/en
Publication of SE8704266L publication Critical patent/SE8704266L/en
Publication of SE500672C2 publication Critical patent/SE500672C2/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
    • B60T8/349—Systems adapted to control a set of axles, e.g. tandem axles
    • 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
    • B60T8/4818—Traction control, stability control, using both the wheel brakes and other automatic braking systems in pneumatic brake systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

A brake system for commercial motor vehicles with an antilock brake device and traction control is proposed. The traction control has a pressure control valve (16), by means of which respective pressure control shut-off valves (23 and 24) can be actuated, each of which is arranged in a respective connecting line (25 and 26) between the brake cylinder (7 and 8 respectively) of the drive axle (5) and the brake cylinder (9 and 10 respectively) of the trailing axle (6). In this way, only the drive axle (5) then continues to receive brake pressure because the corresponding drive wheel on that axle was spinning. <IMAGE>

Description

15 20 25 30 35 500 672 2 Beskrivning av utföringsexemplen. 15 20 25 30 35 500 672 2 Description of the embodiments.

Till en förrâdsbehâllare 1 är en pedalbromsventil 2 ansluten, från vilken tvâ bromsledningar 3 och 4 leder till bromsarna hos var sin fordonssida.A pedal brake valve 2 is connected to a storage container 1, from which two brake lines 3 and 4 lead to the brakes of each vehicle side.

Nyttomotorfordonet med bromssystemet enligt uppfinningen har en drivaxel 5 och en löpaxel 6. Drivaxelns 5 bromscylindrar har hänvisningssiffrorna 7 och 8 och till löpaxeln 6 hör bromscylindrarna 9 och 10.The commercial motor vehicle with the braking system according to the invention has a drive shaft 5 and a running shaft 6. The brake cylinders of the drive shaft 5 have the reference numerals 7 and 8 and the running shaft 6 includes the brake cylinders 9 and 10.

Framför bromscylindrarna 7 och 9 resp. 8 och 10 på vardera fordonssidan är anordnad en tryckstyrventil ll resp. 12, vilka båda arbetar i beroende av signaler från hjulgivare 13 och 14.In front of the brake cylinders 7 and 9 respectively. 8 and 10, on each vehicle side, a pressure control valve 11 and 12, both of which operate in response to signals from wheel transducers 13 and 14.

Tryckstyrventilerna ll och 12 och hjulgivarna 13 och 14 bildar tillsammans med en ej visad elektronisk kopplingsanordning en bronslâsningsskyddsanordning.The pressure control valves 11 and 12 and the wheel sensors 13 and 14 together with a electronic coupling device (not shown) form a bronze locking protection device.

Parallellt ned bronsledningarna 3 och 4 sträcker sig ett led- ningsarrangemang hos ett drivhjulsspinnskydd. En därtill hö- rande förrâdsledning 15 gär till en likaledes av hjulgivarna 13 och 14 kopplingsbar 2-kanals tryckstyrventil 16, till vil- ken tvâ styrledningar 17 och 18 är anslutna. Dessa styrlednin- gar 17 och 18 är via var sin tvåvägs backventil 19 resp. 20 förbundna med bromsledningarna 3 och 4. 2-kanals tryckstyrven- tilen 16 kan alternativt ersättas av två 1-kanals tryckstyr- ventiler.Parallel down the bronze lines 3 and 4 extends a line arrangement of a drive wheel spin guard. An associated supply line 15 leads to a 2-channel pressure control valve 16 which can also be connected by the wheel sensors 13 and 14, to which two control lines 17 and 18 are connected. These control lines 17 and 18 are respectively via two-way check valve 19 and 20 connected to the brake lines 3 and 4. The 2-channel pressure control valve 16 can alternatively be replaced by two 1-channel pressure control valves.

Styrledningarna 17 och 18 leder till var sin styranslutning 21 resp. 22 hos en tryckstyrspärrventil 23 resp. 24. som är in- satt i en förbindelseledning 25 resp. 26 mellan bromscylind- rarna 7 och 9 resp. 8 och 10 och övervakar genomströmningen genom denna ledning 25 resp. 26.The control lines 17 and 18 each lead to a control connection 21 and 21, respectively. 22 of a pressure control shut-off valve 23 resp. 24. which is inserted in a connecting line 25 resp. 26 between the brake cylinders 7 and 9 resp. 8 and 10 and monitors the flow through this line 25 resp. 26.

I de båda tryckstyr-spärrventilerna 23 och 24 är ett kopp- lingsnenbran 23' resp. 24' insatt son styr- och tillslutnings- element. Dylika kopplingsmembran är kända från för bromslàs- 10 15 20 25 30 35 3 50» 6'.72 ( ningsskydd avsedda tryckstyrventiler och har visat sin pålit- lighet under långvariga prov.In the two pressure control shut-off valves 23 and 24, a coupling chuck 23 'and 24 'inserted son control and closing element. Such coupling diaphragms are known from pressure locking valves intended for brake locking and have shown their reliability during prolonged tests.

Funktion.Feature.

Vid normal bromsning strömmar tryckluft från förrâdsbehâllaren 1 genom hromsventllen 2, genom bromsledningen 3 resp. 4 och genom 2-vägs backventilen 19 resp. 20 till bromscylindrarna 7 och 9 resp. 8 och 10. Härvid är såväl bromslåsningsskydds- -tryckstyrventilerna ll och 12 som tryckstyr-spärrventilerna 23 och 24 öppna så att bromsledningsgenomströmningen ej är hindrad.During normal braking, compressed air flows from the storage tank 1 through the brake valve 2, through the brake line 3 resp. 4 and through the 2-way non-return valve 19 resp. 20 to the brake cylinders 7 and 9 resp. 8 and 10. In this case, both the brake lock protection pressure control valves 11 and 12 and the pressure control shut-off valves 23 and 24 are open so that the brake line flow is not obstructed.

När bromslåsningsskyddsanordningen reagerar kopplar tryckstyr- ventilen ll resp. 12 om och bromstrycket i bromscylindrarna 7. 8, 9, 10 lâsningsskyddsregleras.When the brake lock protection device reacts, the pressure control valve ll resp. 12 if and the brake pressure in the brake cylinders 7. 8, 9, 10 anti-lock brakes are regulated.

Om emellertid via hjulgivarna 13 och 14 drivhjulsspinnskyddet inkopplas omställes tryckstyrventilen 16 och styr in ett styr- tryck i styrledningen 17 eller 18. Tryckstyr-spärrventilen 23 eller 24 kopplar om och avbryter förbindelseledningen 25 eller 26 så att då bromscylindern 9 eller 10 på löpaxeln ej längre kan tillföras något tryck. Pâ detta sätt erhåller då endast bronscylindern 7 resp. 8 på drivaxeln.5 bromstryck eftersom det mot denna svarande drivhjulet spann.However, if the drive wheel spin protection is switched on via the wheel sensors 13 and 14, the pressure control valve 16 is switched and controls a control pressure in the control line 17 or 18. The pressure control shut-off valve 23 or 24 switches and disconnects the connecting line 25 or 26 so that then the brake cylinder 9 or 10 some pressure can be applied. In this way, only the bronze cylinder 7 resp. 8 on the drive shaft.5 brake pressure as it against this corresponding drive wheel spans.

I fig. 2 visas en modifikation av konstruktionen enligt fig. l. Motsvarande delar är försedda med samma hänvisningssiffror.Fig. 2 shows a modification of the construction according to Fig. 1. Corresponding parts are provided with the same reference numerals.

Istället för tryckstyr-spärrventiler användes emellertid här tryckstyr-OCH-ventiler 27 och 28.However, instead of pressure control shut-off valves, pressure control AND valves 27 and 28 are used here.

Dessa OCH-ventiler 27 och 28 är relâventiler, som genomsläpper tryck endast när tryck föreligger på deras båda ingångar 21' och 22' samt 29 och 30. I övrigt fungerar detta bromssystem på samma sätt som det enligt fig. l.These AND valves 27 and 28 are relay valves which let pressure through only when pressure is present on their two inputs 21 'and 22' and 29 and 30. Otherwise, this braking system operates in the same way as that of Fig. 1.

Claims (3)

1. 0 15 20 25 30 500 672 4 Patentkrav l. Bromssystem för nyttomotorfordon med en drivaxel (5) och minst en löpaxel (6), vilka har en bromslâsningsskyddsanord- ning med hjulgivare (13, 14), elektronisk kopplingsanordning samt tryckstyrventiler (ll, 12), som är insatta i till hjul- bromsarna (7, 8, 9, 10) förande bromsledningar (3, 4) och vilka-dessutom är utrustade med ett drlvhjulsspinnskydd (ASR), varvid varje bromsledning (3, 4) för bromscylindrarna (7, 8, 9, 10) på varje fordonssida är via en 2-vägs backventil (19, 20) och en bromslåsningsskydds-tryckstyrventi1 (ll, 12) förd till var sin förbindelseledning (25, 26) mellan drivaxelns (5) hjulbronscylinder (7 resp. 8) och den intilliggande löpaxelns (6) hjulbromscylinder (9 resp. 10) och vid normalbromsning och vid brons]åsningsskyddsanordningens arbete dessa kopplingsme- de] står på genomströmning och är överförbara till spärrläge vid drivhjulsspinnskyddets arbete. k ä n n e t e c k n a t av att parallellt med en av föraren påverkbar bromsventil (2) finnes en tryckstyrventil (16) för tvâkanals drivhjulsspinn- skydd-styrning, vilken för vardera fordonssidan upprättar styrtryck i en styrledning (17 resp. 18), som är ansluten till en styrtryckberoende tryckstyr-spärrventil (23, 24; 27, 28), vilken är anordnad 1 förbindelseledningen (25, 26) mellan drivaxelns (5) hjulbromscylinder (7, 8) och löpaxelns (6) hjulbromscylinder (9. 10). k ä n n e t e c k n a t av att ett styr- och tillslutningselement hos tryckstyr-spärrventilen (23, 24; 27, 28) är utformat som kopplingsmembran (23', 24').1. 0 15 20 25 30 500 672 4 Claims 1. Brake systems for commercial motor vehicles with a drive shaft (5) and at least one running shaft (6), which have a brake lock protection device with wheel sensors (13, 14), electronic coupling device and pressure control valves (ll , 12), which are inserted in brake lines (3, 4) leading to the wheel brakes (7, 8, 9, 10) and which are additionally equipped with a drive wheel spin protection (ASR), each brake line (3, 4) for the brake cylinders (7, 8, 9, 10) on each vehicle side are fed via a 2-way non-return valve (19, 20) and a brake lock protection pressure control valve (11, 12) to their respective connecting line (25, 26) between the drive shaft (5) wheel brake cylinder (7 and 8 respectively) and the wheel brake cylinder (9 or 10) of the adjacent running shaft (6) and during normal braking and during the work of the bronze [ridge protection device] these coupling means] are on flow and are transferable to the locking position during drive wheel spin protection work. characterized in that in parallel with a brake valve (2) which can be actuated by the driver, there is a pressure control valve (16) for two-channel drive wheel spin protection control, which for each vehicle side establishes control pressure in a control line (17 and 18, respectively), which is connected to a control pressure-dependent pressure control shut-off valve (23, 24; 27, 28), which is arranged in the connecting line (25, 26) between the wheel brake cylinder (7, 8) of the drive shaft (5) and the wheel brake cylinder (9. 10) of the running shaft (6). characterized in that a control and closing element of the pressure control shut-off valve (23, 24; 27, 28) is designed as a coupling diaphragm (23 ', 24'). 2. Bromssystem enligt krav 1,Brake system according to claim 1, 3. Brolssysten enligt krav l eller 2, k ä n n e t e c k - av att den styrtryckpâverkade tryckstyr-spärrventilen (27, 28) är en 0CH-ventil, vilken genonsläpper tryck endast när tryck råder på båda dess ingångar (21, 22; 29, 30). n 6 tBrake system according to Claim 1 or 2, characterized in that the control pressure-affected pressure control shut-off valve (27, 28) is an OCH valve which releases pressure only when pressure prevails at both of its inlets (21, 22; 29, ). n 6 t
SE8704266A 1986-11-03 1987-11-02 Brake system for utility vehicles SE500672C2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19863637419 DE3637419A1 (en) 1986-11-03 1986-11-03 Brake system for commercial motor vehicles

Publications (3)

Publication Number Publication Date
SE8704266D0 SE8704266D0 (en) 1987-11-02
SE8704266L SE8704266L (en) 1988-05-04
SE500672C2 true SE500672C2 (en) 1994-08-08

Family

ID=6313068

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8704266A SE500672C2 (en) 1986-11-03 1987-11-02 Brake system for utility vehicles

Country Status (4)

Country Link
JP (1) JPS63166650A (en)
DE (1) DE3637419A1 (en)
FR (1) FR2605957B1 (en)
SE (1) SE500672C2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19640141A1 (en) * 1996-09-28 1998-04-02 Bosch Gmbh Robert Slip-controlled compressed air braking system for commercial vehicles

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2545593A1 (en) * 1975-10-11 1977-04-14 Wabco Westinghouse Gmbh ANTI-SKID CONTROL SYSTEM
DE3400566A1 (en) * 1984-01-10 1985-07-18 Robert Bosch Gmbh, 7000 Stuttgart BRAKE SYSTEM FOR VEHICLES
JPS61205540A (en) * 1985-03-08 1986-09-11 Sumitomo Electric Ind Ltd Wheel slip prevention device
DE3518340A1 (en) * 1985-05-22 1986-11-27 Robert Bosch Gmbh, 7000 Stuttgart TRUCK VEHICLE WITH A DOUBLE AXLE UNIT

Also Published As

Publication number Publication date
SE8704266L (en) 1988-05-04
FR2605957B1 (en) 1992-04-03
DE3637419C2 (en) 1993-09-16
SE8704266D0 (en) 1987-11-02
FR2605957A1 (en) 1988-05-06
DE3637419A1 (en) 1988-05-05
JPS63166650A (en) 1988-07-09

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