FR2459173A2 - Prevention of jack-knifing in articulated vehicles - uses auxiliary hydraulic drive to wheels of front portion controlled by lateral position sensors - Google Patents

Prevention of jack-knifing in articulated vehicles - uses auxiliary hydraulic drive to wheels of front portion controlled by lateral position sensors Download PDF

Info

Publication number
FR2459173A2
FR2459173A2 FR7915899A FR7915899A FR2459173A2 FR 2459173 A2 FR2459173 A2 FR 2459173A2 FR 7915899 A FR7915899 A FR 7915899A FR 7915899 A FR7915899 A FR 7915899A FR 2459173 A2 FR2459173 A2 FR 2459173A2
Authority
FR
France
Prior art keywords
wheels
pump
motor
vehicle
hydraulic
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.)
Granted
Application number
FR7915899A
Other languages
French (fr)
Other versions
FR2459173B2 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Heuliez SA Louis
Original Assignee
Heuliez SA Louis
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
Priority claimed from FR7904363A external-priority patent/FR2449585A1/en
Application filed by Heuliez SA Louis filed Critical Heuliez SA Louis
Priority to FR7915899A priority Critical patent/FR2459173A2/en
Priority to FR7923216A priority patent/FR2465628A2/en
Priority to DE8080400131T priority patent/DE3065738D1/en
Priority to EP80400131A priority patent/EP0015176B1/en
Priority to AT80400131T priority patent/ATE5469T1/en
Priority to HU34680A priority patent/HU183113B/en
Priority to BR8000979A priority patent/BR8000979A/en
Priority to CA000346049A priority patent/CA1174710A/en
Priority to JP2105680A priority patent/JPS55119574A/en
Publication of FR2459173A2 publication Critical patent/FR2459173A2/en
Publication of FR2459173B2 publication Critical patent/FR2459173B2/fr
Application granted granted Critical
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D47/00—Motor vehicles or trailers predominantly for carrying passengers
    • B62D47/02—Motor vehicles or trailers predominantly for carrying passengers for large numbers of passengers, e.g. omnibus
    • B62D47/025—Motor vehicles or trailers predominantly for carrying passengers for large numbers of passengers, e.g. omnibus articulated buses with interconnecting passageway, e.g. bellows
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D59/00—Trailers with driven ground wheels or the like
    • B62D59/04—Trailers with driven ground wheels or the like driven from propulsion unit on trailer

Abstract

An articulated wheeled vehicle has a front portion with one set of wheels (3) for steering and a second set of wheels (4) which normally only support the load. The rear portion (2) has a set of wheels (5) which propel the vehicle. Sensos which detect the lateral component F2 PR of the thrust from the rear portion are fitted to both portions (1, 2). When a predetermined threshold is exceeded these sensors emit a signal which is used to engage a hydraulic drive to the rear wheels of the front portion. The system is for articulated vehicles, especially articulated buses driven from the rear portion, are liable to jack-knife on slippery roads. By sensing the lateral forces, the conditions which cause skidding can be detected. The system avoids the loss of the lateral component of the propulsive force, which would reduce the available propulsive force which is a handicap when negotiating a corner.

Description

Dans le brevet principal on a décrit un véhicule sur roues du type articule "pousseur", c'est-à-dire comprenant un chassis qui comporte au moins deux parties munies chacune d'au moins un train de roues et articulees l'une sur l'autre -longitudinalement au véhicule, un train de roues de la partie avant étant directeur, tandis qu'un train de roues de la partie arrière est moteur. In the main patent, a vehicle on wheels of the articulated "pusher" type has been described, that is to say comprising a chassis which comprises at least two parts each provided with at least one set of wheels and articulated one on the other - longitudinally to the vehicle, a train of wheels of the front part being steering, while a train of wheels of the rear part is driving.

Plus particulièrement ledit brevet principal concerne un vehicule du type ci-dessus dans lequel un train de roues de la partie avant est également moteur, l'ensemble moteurtransmission étant relié à la fois au train de roues moteur de la partie arrière et à ce train de roues moteur de la partie avant, la partie de l'ensemble moteur-transmission qui est reliee à ce train moteur avant étant associée-à des moyens de régulation de cette partie de l'ensemble moteur-transmission, qui comportent un organe de seuil de mise en service de cette partie de l'ensemble moteur-transmission relie à un organe de mesure d'un paramètre traduisant au moins approximativement la stabilité transversale du véhicule
Deux modes de realisation d'un tel vehi- cule sont decrits dans le brevet principal, l'un dans lequel un moteur unique, dispose dans la partie arrière, actionne mécaniquement le train de roues moteur arrière,une transmission hydrostatique étant in terposée entre le différentiel de ce train et celui du train de roues moteur avant;; et, l'autre dans lequel un moteur unique egalfflnent dispose dans la partie arrière actionne deux pompes hydrau0iques agissant sur les moteurs hydrauliques des trains de roues moteur arrière et avant des côtés droit et gauche respectivement.More particularly, said main patent relates to a vehicle of the above type in which a train of wheels of the front part is also motor, the engine-transmission assembly being connected both to the train of drive wheels of the rear part and to this train of drive wheels of the front part, the part of the engine-transmission assembly which is connected to this front drive train being associated with means of regulation of this part of the engine-transmission assembly, which comprise a threshold member for putting this part of the engine-transmission assembly into service connects to a device for measuring a parameter reflecting at least approximately the transverse stability of the vehicle
Two embodiments of such a vehicle are described in the main patent, one in which a single motor, arranged in the rear part, mechanically actuates the rear wheel drive train, a hydrostatic transmission being interposed between the differential of this train and that of the front engine wheel train; and, the other in which a single, equal motor has in the rear part actuates two hydraulic pumps acting on the hydraulic motors of the rear and front engine wheel sets on the right and left sides respectively.

Le but de la présente invention est de profiter de la réversibilité d'une telle transmission hydrostatique par pompe et moteur hydrauliques pour récupérer au moins partiellement au moment du freinage l'énergie cinétique acquise par le vehicule et habituellement dissipée sous forme calorique dans les dispositifs de freinage. The purpose of the present invention is to take advantage of the reversibility of such a hydrostatic transmission by hydraulic pump and motor to recover at least partially at the time of braking the kinetic energy acquired by the vehicle and usually dissipated in caloric form in the devices of braking.

Cette récupération consiste avantageusement en un stockage d'une partie de ladite energie cinétique puis une restitution de l'énergie stockée au moment du démarrage du véhicule en vue de diminuer le travail demandé au moteur. This recovery advantageously consists in storing part of said kinetic energy and then restoring the energy stored when the vehicle is started in order to reduce the work required of the engine.

A cet effet, l'invention a pour objet un véhicule sur roues articule pousseur du type décrit dans le brevet principal et comprenant, dans la partie arrière, un moteur unique et un train de roues moteur et, dans la partie avant, un train de roues moteur dispose à l'arrière de cette partie avant, au moins le train de roues moteur avant etant entraine par une transmission hydrostatique du type à pompe et moteur,la pompe étant entrainee à partir dudit moteur du véhicule, caractérisé en ce .qu'entre la pompe et le moteur hydraulique, est prevu un accumulateur d'énergie hydraulique relie à deux electro-vannes reliées chacune à l'une des deux branches de la boucle hydrostatique reliant la pompe au moteur, la commande selective des electro-vannes étant realisée par un organe de regulation captant les pressions en divers points de ladite boucle en vue d'envoyer la pression de fluide provenant du moteur dans ledit accumulateur au cours d'un freinage et/ou d'un ralentissement et de reinjecter, au cours du redemarrage et/ou d'une réaccélération, dans le circuit du moteur hydraulique la surpression ainsi emmagasinée dans l'accumulateur. To this end, the subject of the invention is a vehicle on wheels with a pusher articulation of the type described in the main patent and comprising, in the rear part, a single motor and a train of drive wheels and, in the front part, a train motor wheels have at the rear of this front part, at least the front motor wheel train being driven by a hydrostatic transmission of the pump and motor type, the pump being driven from said vehicle engine, characterized in that. between the pump and the hydraulic motor, a hydraulic energy accumulator is provided, connected to two solenoid valves each connected to one of the two branches of the hydrostatic loop connecting the pump to the motor, the selective control of the solenoid valves being carried out by a regulating member sensing the pressures at various points of said loop in order to send the fluid pressure coming from the engine into said accumulator during braking and / or deceleration and to reinject, at during the restart and / or re-acceleration, in the hydraulic motor circuit the overpressure thus stored in the accumulator.

On va décrire maintenant plus en détail un tel système en se reportant au dessin sur lequel la figure unique illustre schématiquement le principe de récupération d'energie selon l'invention. We will now describe in more detail such a system with reference to the drawing in which the single figure schematically illustrates the principle of energy recovery according to the invention.

Sur cette figure unique on a representé en 1 une pompe hydraulique entraînée à partir du moteur (non représente) du véhicule. La pompe 1 est reliée à un moteur hydraulique 2 entraînant le train de roues avant (ou central) du véhicule (non represente). In this single figure there is shown in 1 a hydraulic pump driven from the engine (not shown) of the vehicle. Pump 1 is connected to a hydraulic motor 2 driving the front (or central) train of wheels of the vehicle (not shown).

La boucle hydrostatique reliant la pompe 1 au moteur 2 comprend (marche avant normale du véhicule) une branche 3 haute pression HP et une branche retour 4 basse pression BP. Un accumulateur hydraulique 5 est relie à deux électro-vannes 6 et 7 reliées, l'une (6), à la branche 3 et, l'autre (7), à la branche 4. The hydrostatic loop connecting the pump 1 to the motor 2 comprises (normal forward movement of the vehicle) a branch 3 high pressure HP and a return branch 4 low pressure BP. A hydraulic accumulator 5 is connected to two solenoid valves 6 and 7 connected, one (6), to branch 3 and, the other (7), to branch 4.

Les électro-vannes 6 et 7 sont commandes par un organe de régulation 8 captant les pressions en divers points de la boucle pompe-moteur.  The solenoid valves 6 and 7 are controlled by a regulating member 8 capturing the pressures at various points of the pump-motor loop.

On a egalement représenté sur la figure, le circuit de drainage et de gavage de la pompe comprenant notamment un filtre 9, une bâche 10 et un échangeur 11. The drainage and booster circuit of the pump is also shown in the figure, comprising in particular a filter 9, a tank 10 and a heat exchanger 11.

En fonctionnement normal, la pompe I débite normalement dans le circuit à la pression P1 (HP). Le moteur 2 délivre une pression de sortie P2 < P1. Les deux électro-vannes 6 et 7 sont fermees (par l'organe de regulation 8) et l'accumulateur 5 est isolé de la boucle hydraulique 3, 4. In normal operation, pump I normally flows into the circuit at pressure P1 (HP). Motor 2 delivers an output pressure P2 <P1. The two solenoid valves 6 and 7 are closed (by the regulating member 8) and the accumulator 5 is isolated from the hydraulic loop 3, 4.

Au cours d'un freinage et/ou d'un ralentissement (pourvu qu'il soit suffisamment intense), le moteur 2 est entrainé par la ou les roues et se comporte alors comme une pompe et la pression P2 devient supérieure à la pression P1. During braking and / or deceleration (provided that it is sufficiently intense), the motor 2 is driven by the wheel or wheels and then behaves like a pump and the pressure P2 becomes higher than the pressure P1 .

Si P2 est supérieure à P3, pression dans l'accumulateur 5, l'électro-vanne 7 s'ouvre et l'accumulateur 5 monte en pression. Si P2 est inferieure ou égale à P3, l'electro-vanne 7 reste fermee et il ne se passe rien. If P2 is greater than P3, pressure in the accumulator 5, the solenoid valve 7 opens and the accumulator 5 rises in pressure. If P2 is less than or equal to P3, the solenoid valve 7 remains closed and nothing happens.

La restitution de l'énergie ainsi stockée dans l'accumulateur 5 s'opere au cours du redémarrage ou de la réacce lération. En effet, une fois que le fonctionnement de la transmission hydrostatique redevient normal et que P1 redevient supérieure a P2, l'electro-vanne 6 s'ouvre, à condition que P3 soit superieure à P1, et l'accumulateur 5 débite dans le circuit HP (3) donc en réduisant l'effort demande à la pompe 1. The energy thus stored in the accumulator 5 is restored during restart or reactivation. In fact, once the operation of the hydrostatic transmission returns to normal and P1 becomes again greater than P2, the electro-valve 6 opens, provided that P3 is greater than P1, and the accumulator 5 flows into the circuit HP (3) therefore by reducing the effort required by pump 1.

Bief. untendu, les électro-vannes 6 et 7 sont pilotées par l'organe de régulation 8 de maniere à ne pouvoir être ouvertes en même temps et créer ainsi un circuit court. En outre, elles restent fermées toutes les deux lorsque le sens d'écoulement de l'huile du circuit hydraulique a éte inversé par la commande de marche arrière du véhicule. Reach. untended, the solenoid valves 6 and 7 are controlled by the regulating member 8 so that they cannot be opened at the same time and thus create a short circuit. In addition, they both remain closed when the direction of flow of the oil in the hydraulic circuit has been reversed by the vehicle reverse control.

La présente invention s'applique au mode de realisation de la figure 1 du brevet principal aussi bien qu'à celui de la figure 2. Dans la figure 1 du brevet principal,seul le train de roues avant est mu hydrauliquement par un moteur hydraulique alimenté par une pompe elle-meme entraînée par le differentiel du train de roues arriere actionné par un moteur unique. Une telle transmission hydrostatique peut être équipée du perfectionnement objet de la présente invention. The present invention applies to the embodiment of FIG. 1 of the main patent as well as to that of FIG. 2. In FIG. 1 of the main patent, only the front wheel assembly is hydraulically moved by a hydraulic motor powered by a pump itself driven by the differential of the rear wheel train actuated by a single motor. Such a hydrostatic transmission can be equipped with the improvement which is the subject of the present invention.

Dans la figure 2 du brevet principal, le moteur unique entraîne en parallèle deux pompes hydrauliques, l'une pour les roues avant, l'autre pour les roues arrière. Chaque pompe actionne les moteurs hydrauliques des trains de roues arrière et avant (central). Dans ce mode de réalisation, on peut prévoir le circuit de récupération selon la présente invention en incorporant entre chaque pompe et leurs moteurs associés un ensemble accumulateur-électro-vannes conformément au schéma de la figure unique ci-jointe.  In FIG. 2 of the main patent, the single motor drives two hydraulic pumps in parallel, one for the front wheels, the other for the rear wheels. Each pump drives the hydraulic motors of the rear and front (central) wheel sets. In this embodiment, the recovery circuit according to the present invention can be provided by incorporating between each pump and their associated motors an accumulator-solenoid valve assembly in accordance with the diagram of the attached single figure.

Claims (1)

REVENDICATIONS 1") - Véhicule sur roues articule pousseur du type decrit dans le brevet principal et comprenant, dans la partie arriere, un moteur unique et un train de roues moteur et, dans la partie avant, un train de roues moteur dispose à l'arrière de cette partie avant, au moins le train de roues moteur avant étant entraîné par une transmission hydrostatique du type à pompe et moteur,la pompe etant entraînée à partir dudit moteur du vehicule, caractérisé en ce qu'entre la pompe et le moteur hydraulique est prévu un accumulateur d'energie hydraulique relie à deux électro-vannes reliées chacune à l'une des deux branches de la boucle hydrostatique reliant la pompe au moteur, la commande selective des électro-vannes étant réalisée par un organe de régulation captant les pressions en divers points de ladite boucle en vue d'envoyer la pression de fluide provenant du moteur dans ledit accumulateur au cours d'un freinage et/ou d'un ralentissement et de reinjecter, au cours du redémarrage et/ou d'une réaccélération, dans le circuit du moteur hydraulique la surpression ainsi emmagasinée dans l'accumulateur. 2") - Véhicule suivant la revendication 1, ca ractérisé en ce que ledit organe de régulation agit sur les électro- vannes de manière qu'elles ne puissent pas être ouvertes simultanement et qu'elles restent fermees lorsque le sens d'écoulement du fluide hydraulique est inversé par la commande de marche arrière du vehicule.CLAIMS 1 ") - Vehicle on articulated pusher wheels of the type described in the main patent and comprising, in the rear part, a single motor and a train of drive wheels and, in the front part, a train of drive wheels arranged at the rear of this front part, at least the front wheel assembly being driven by a hydrostatic transmission of the pump and motor type, the pump being driven from said vehicle engine, characterized in that between the pump and the hydraulic motor a hydraulic energy accumulator is provided connected to two solenoid valves each connected to one of the two branches of the hydrostatic loop connecting the pump to the motor, the selective control of the solenoid valves being carried out by a regulating member capturing the pressures at various points of said loop in order to send the fluid pressure coming from the engine into said accumulator during braking and / or deceleration and to reinject, during restarting and / or a re-acceleration, in the hydraulic motor circuit, the overpressure thus stored in the accumulator. 2 ") - Vehicle according to claim 1, ca characterized in that said regulating member acts on the solenoid valves so that they cannot be opened simultaneously and that they remain closed when the direction of flow of the fluid hydraulic is reversed by the vehicle reverse control. 30) - Vehicule suivant I'une;quelconue des revendications 1 ou 2, caractérisé en ce que ladite pompe alimente un premier moteur hydraulique actionnant les roues droites du train arrière et un second moteur hydraulique en parallele actionnant les roues droites du train avant, les roues gauches des trains arrière et avant étant mues par une transmission hydrostatique symétrique, les deux pompes étant entraînées par le moteur unique. 30) - Vehicle according to any one of claims 1 or 2, characterized in that said pump supplies a first hydraulic motor actuating the right wheels of the rear axle and a second hydraulic motor in parallel actuating the straight wheels of the front axle, the left wheels of the rear and front undercarriages being driven by a symmetrical hydrostatic transmission, the two pumps being driven by the single motor.
FR7915899A 1979-02-21 1979-06-21 Prevention of jack-knifing in articulated vehicles - uses auxiliary hydraulic drive to wheels of front portion controlled by lateral position sensors Granted FR2459173A2 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
FR7915899A FR2459173A2 (en) 1979-02-21 1979-06-21 Prevention of jack-knifing in articulated vehicles - uses auxiliary hydraulic drive to wheels of front portion controlled by lateral position sensors
FR7923216A FR2465628A2 (en) 1979-02-21 1979-09-18 VEHICLE ON WHEELS OF ARTICULATING PUSHER TYPE
AT80400131T ATE5469T1 (en) 1979-02-21 1980-01-28 WHEELED VEHICLE OF THE ARTICULATED TYPE WITH PUSHING PART.
EP80400131A EP0015176B1 (en) 1979-02-21 1980-01-28 Wheeled vehicle of the hinged pushing type
DE8080400131T DE3065738D1 (en) 1979-02-21 1980-01-28 Wheeled vehicle of the hinged pushing type
HU34680A HU183113B (en) 1979-02-21 1980-02-15 Jointed wheeled vehicle of push type
BR8000979A BR8000979A (en) 1979-02-21 1980-02-15 VEHICLE ON ARTICULATED IMPELLER WHEELS
CA000346049A CA1174710A (en) 1979-02-21 1980-02-20 Vehicle on wheels of the articulated pusher type
JP2105680A JPS55119574A (en) 1979-02-21 1980-02-21 Propelling articulated car

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7904363A FR2449585A1 (en) 1979-02-21 1979-02-21 VEHICLE ON WHEELS OF THE PUSHER TYPE
FR7915899A FR2459173A2 (en) 1979-02-21 1979-06-21 Prevention of jack-knifing in articulated vehicles - uses auxiliary hydraulic drive to wheels of front portion controlled by lateral position sensors

Publications (2)

Publication Number Publication Date
FR2459173A2 true FR2459173A2 (en) 1981-01-09
FR2459173B2 FR2459173B2 (en) 1983-10-21

Family

ID=26221032

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7915899A Granted FR2459173A2 (en) 1979-02-21 1979-06-21 Prevention of jack-knifing in articulated vehicles - uses auxiliary hydraulic drive to wheels of front portion controlled by lateral position sensors

Country Status (1)

Country Link
FR (1) FR2459173A2 (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2827763A (en) * 1955-05-20 1958-03-25 Jaroco Engineering Co Hydraulic system
DE1937624A1 (en) * 1969-07-24 1971-03-04 Paul Jaeck Hydraulic drive device for motor vehicles
US3892283A (en) * 1974-02-19 1975-07-01 Advanced Power Systems Hydraulic drive
FR2258091A5 (en) * 1973-07-13 1975-08-08 Ferrara Guy
US3945207A (en) * 1974-07-05 1976-03-23 James Ervin Hyatt Hydraulic propulsion system
DE2448723A1 (en) * 1974-10-12 1976-04-22 Maschf Augsburg Nuernberg Ag IC engine torque convecter unit - has energy storage device in addition to constant-speed governor
FR2299196A1 (en) * 1975-01-29 1976-08-27 Peugeot & Renault Vehicle regenerative braking system - has logic pressure detectors for master cylinder chamber to control hydraulic motor capacity
FR2323067A1 (en) * 1975-09-08 1977-04-01 Carman Vincent BRAKING AND ACCELERATION HYDRAULIC CIRCUIT FOR VEHICLES
FR2360439A1 (en) * 1976-08-06 1978-03-03 Renault HYBRID TRANSMISSION DEVICE FOR MOTOR VEHICLES WITH THERMAL ENGINE
FR2388175A1 (en) * 1977-04-20 1978-11-17 Carman Vincent HYDRAULIC TRANSMISSION DEVICE FOR VEHICLE

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2827763A (en) * 1955-05-20 1958-03-25 Jaroco Engineering Co Hydraulic system
DE1937624A1 (en) * 1969-07-24 1971-03-04 Paul Jaeck Hydraulic drive device for motor vehicles
FR2258091A5 (en) * 1973-07-13 1975-08-08 Ferrara Guy
US3892283A (en) * 1974-02-19 1975-07-01 Advanced Power Systems Hydraulic drive
US3945207A (en) * 1974-07-05 1976-03-23 James Ervin Hyatt Hydraulic propulsion system
DE2448723A1 (en) * 1974-10-12 1976-04-22 Maschf Augsburg Nuernberg Ag IC engine torque convecter unit - has energy storage device in addition to constant-speed governor
FR2299196A1 (en) * 1975-01-29 1976-08-27 Peugeot & Renault Vehicle regenerative braking system - has logic pressure detectors for master cylinder chamber to control hydraulic motor capacity
FR2323067A1 (en) * 1975-09-08 1977-04-01 Carman Vincent BRAKING AND ACCELERATION HYDRAULIC CIRCUIT FOR VEHICLES
FR2360439A1 (en) * 1976-08-06 1978-03-03 Renault HYBRID TRANSMISSION DEVICE FOR MOTOR VEHICLES WITH THERMAL ENGINE
FR2388175A1 (en) * 1977-04-20 1978-11-17 Carman Vincent HYDRAULIC TRANSMISSION DEVICE FOR VEHICLE

Also Published As

Publication number Publication date
FR2459173B2 (en) 1983-10-21

Similar Documents

Publication Publication Date Title
FR2483862A1 (en) DEVICE FOR CONTROLLING THE PROPULSION OF A MOTOR VEHICLE EQUIPPED WITH AN ANTI-LOCKING SYSTEM
FR2709459A1 (en) Brake pressure control device.
FR2556672A1 (en) HYDRAULIC BRAKE SYSTEM
FR2569381A1 (en) CIRCUIT ARRANGEMENT FOR CONTROLLING A CLUTCH OF A MOTOR VEHICLE
FR2572040A1 (en) BRAKING SYSTEM WITH TRACTION SLIDING AND BRAKING REGULATION
FR2579945A1 (en)
FR2601918A1 (en) VALVE ARRANGEMENT FOR A BRAKE SYSTEM OF A MOTOR VEHICLE.
FR2645096A1 (en) HYDRAULIC BRAKING SYSTEM WITH TRACTION SLIDING REGULATION
US4858435A (en) Fluid pressure control circuit for working vehicle having transmission operable by fluid pressure
FR2657059A1 (en) HYDRAULIC BRAKING SYSTEM.
FR2597052A1 (en) HYDRAULIC BRAKING SYSTEM PROVIDED WITH A WHEEL SLIDING REGULATION DEVICE
FR2629145A1 (en) DEVICE FOR CONTROLLING A HYDRAULIC CYLINDER WITH A DOUBLE EFFECT
FR2628695A1 (en) BRAKING SYSTEM WITH BRAKE AND TRACTION SLIDING REGULATOR
FR2601636A1 (en) SLIDING CONTROL BRAKE SYSTEM FOR A MOTOR VEHICLE WITH AN ENGINE AXLE
FR2748252A1 (en) HYDRAULIC POWER ASSISTED STEERING
FR2601312A1 (en) BRAKE SYSTEM WITH SLIDER AND TRACTION CONTROL FOR MOTOR VEHICLE
EP1348668B1 (en) Variable reach lift truck with three wheels
EP0687230B1 (en) Braking system with three separate hydraulic circuits
EP0074236A2 (en) Steerable device for moving trailer type vehicles
FR2535273A1 (en) ROAD TRAIN BRAKING EQUIPMENT
FR2584357A1 (en) DEVICE FOR SUPPLYING AUXILIARY PRESSURE TO A BRAKING SYSTEM
FR2597422A1 (en) SLIDING CONTROL BRAKE SYSTEM FOR A FRONT OR REAR PROPULSION VEHICLE
FR2561192A1 (en) DEVICE FOR HYDRAULIC ASSISTANCE OF THE STEERING OF A MOTOR VEHICLE
FR2601916A1 (en) BRAKE SYSTEM WITH ANTI-LOCK CONTROL AND TRACTION SLIDER CONTROL.
FR2611611A1 (en) Device for propelling a trailer-type vehicle connected to a first self-propelling vehicle