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WO1996010498A1 - Dispositif d'immobilisation de vehicules a moteur et son procede de fonctionnement - Google Patents

Dispositif d'immobilisation de vehicules a moteur et son procede de fonctionnement Download PDF

Info

Publication number
WO1996010498A1
WO1996010498A1 PCT/DE1995/001182 DE9501182W WO9610498A1 WO 1996010498 A1 WO1996010498 A1 WO 1996010498A1 DE 9501182 W DE9501182 W DE 9501182W WO 9610498 A1 WO9610498 A1 WO 9610498A1
Authority
WO
WIPO (PCT)
Prior art keywords
demobilization
wheel
brake
vehicle
pressure
Prior art date
Application number
PCT/DE1995/001182
Other languages
German (de)
English (en)
Inventor
Guenther Schmidt
Peter Zeiner
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO1996010498A1 publication Critical patent/WO1996010498A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/01—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens
    • B60R25/08—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on brakes or brake 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
    • B60T8/17—Using electrical or electronic regulation means to control braking
    • B60T8/175—Brake regulation specially adapted to prevent excessive wheel spin during vehicle acceleration, e.g. for traction control
    • 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
    • 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
    • B60T2270/00—Further aspects of brake control systems not otherwise provided for
    • B60T2270/20—ASR control systems
    • B60T2270/203—ASR control systems hydraulic system components

Definitions

  • the invention relates to a demobilization device for vehicles which have a hydraulic brake system, according to the preamble of claim 1.
  • Such a demobilization device is known from US Pat. No. 617,663. It serves to protect the vehicle against theft.
  • the known demobilization device has a controlled check valve in a brake line of a brake circuit, which is arranged in such a way that brake fluid can flow in the direction of the wheel brake cylinders, whereas it prevents a backflow of brake fluid out of the wheel brake cylinder if it does is not brought into a pass position by the user to operate the vehicle.
  • the user brings the controlled check valve into a check position and then actuates the brake pedal.
  • brake pressure is built up in the wheel brake cylinders which are connected to the brake circuit in which the controlled check valve is switched on.
  • the check valve 'One gets the Brems ⁇ fluid pressure in the wheel brake cylinders n jeweili up rec:.: Even if the brake pedal is no longer depressed. The respective brakes are applied so that the vehicle cannot be moved.
  • the demobilization device according to the invention with the features of claim 1 has the advantage that it is only effective when attempting to use the vehicle without authorization.
  • Another advantage of the demobilization device according to the invention is that brake fluid is not pressurized in the long term, but only when trying to use the vehicle without authorization.
  • the vehicle brake system, in particular its seals, are not permanently pressurized, which benefits the life of the seals and which reduces a possible loss of brake fluid due to a low leakage of the brake system to a negligible amount.
  • the de-mobilization device according to the invention can additionally be used as a simple starting aid which counteracts spinning of the drive wheels.
  • the demobilization device according to the invention can be used as a full traction slip control, which limits the slip of each driven wheel to a small value and thereby ensures the maximum possible propulsion of the vehicle (claim 9).
  • Claim 10 is directed to a method for operating the demobilization device according to the invention as a simple starting aid.
  • FIG. 1 shows a diagram of a demobilization device according to the invention which acts only on one wheel
  • Figure 2 shows the schematic of an embodiment of the invention for a conventional dual-circuit brake system
  • FIG. 3 shows the diagram of a demobilization device according to the invention for an ABS vehicle brake system. - U - Description of the execution examples
  • FIG. 1 shows an embodiment of a demobilization device according to the invention for a motor vehicle, which is kept simple for easy understanding.
  • the demobilization device is integrated in a brake circuit of the vehicle, which comprises a master brake cylinder 14 which can be actuated by means of a brake pedal 10 via a brake booster 12 and to which a wheel brake cylinder 16 is connected via a brake line 18.
  • An electromagnetically actuated changeover valve 20 is arranged in the brake line 18 and is open in a rest position. When the changeover valve 20 is at rest, brake fluid can flow freely from the master brake cylinder 14 to the wheel brake cylinder 16 and back. In its switching position, the switching valve 20 blocks the brake line 18.
  • the switching valve 20 is controlled by a control unit 22.
  • a pressure limiting valve 24 is integrated into the change-over valve 20, which limits the maximum pressure of the brake fluid in the wheel brake cylinder 16 and enables a backflow of brake fluid from the wheel brake cylinder 16 into the master brake cylinder 14 when the pressure in the wheel brake cylinder 16 exceeds a maximum value and the pressure in the master brake 14 as the pressure in the wheel brake cylinder 16 is.
  • a non-return valve 26 is arranged parallel to the changeover valve 20, which enables brake fluid to flow into the wheel brake cylinder 16 if there is a negative pressure in the master brake cylinder in relation to the brake fluid pressure.
  • a hydraulic pump 30 parallel to the changeover valve 20 is a hydraulic pump 30, which can be driven by an electric motor 28, for conveying brake fluid from the master brake cylinder 14 into the Radbrem ⁇ zylinder 16 to ⁇ Associates.
  • the electric motor 28, like the switching valve, is controlled by the control unit 22.
  • At least one check valve 32, 32a is connected in series with the hydraulic pump 30, so that a backflow of brake fluid from the wheel brake cylinder 16 to the master brake cylinder 4 is prevented through the hydraulic pump 30. If a piston pump is used as the hydraulic pump 30 in embodiments of the invention, this can be preceded by a check valve 32 as an inlet valve and a further check valve 32a as an outlet valve.
  • the control unit switches on the electric motor 28 periodically for a short time when theft has been detected.
  • FIG. 2 shows a second example of a demobilization device 34 according to the invention. It is integrated in a two-circuit brake system of the vehicle. Parts corresponding to FIG. 1 are given the same reference numerals, the parts of the second brake circuit additionally being provided with one.
  • the demobilization device 34 according to the invention is constructed identically for both brake circuits. It is explained on the basis of the brake circuit shown on the right in FIG. 2, the explanations being equally valid for the brake circuit shown on the left.
  • Two wheel brake cylinders 16, 34 are connected to each brake circuit.
  • a changeover valve 20 is switched on, that its open position is open and its switch position closes.
  • a pressure limiting valve 24, which is effective in the switching position of the switching valve 20, is integrated in the switching valve 20.
  • a hydraulic pump 30 arranged parallel to the changeover valve 20 is used to build up brake pressure in the wheel brake cylinder 16 when the control device 22 detects theft.
  • the hydraulic pumps 30, 30 'of both brake circuits of the demobilization device 34 according to the invention are driven by a common electric motor 28.
  • the function of the exemplary embodiment of the invention shown in FIG. 2 corresponds to the function of the exemplary embodiment shown in FIG. 1, the demobilization device 34 in the second embodiment. example acts on the wheel brake cylinders 16, 16 'of the two driven wheels of the vehicle. In order to avoid repetitions, the function of the demobilization device according to the invention is not explained again; reference is made to the explanations for FIG. 1.
  • the demobilization device 34 according to the invention shown in FIG. 2 only acts on the wheel brake cylinders 16, 16 'and not also on the wheel brake cylinders 36, 36' of the non-driven wheels is because the demobilization device 34 acts on them Can also be used as a starting aid with little effort:
  • the drive speed is measured at the drive train of the vehicle, for example at the transmission output or at the differential input.
  • the speed is tapped by means of a sensor 38 on the tachometer drive and fed to control device 22.
  • the acceleration of each vehicle is limited to a maximum acceleration if the tires have ideal grip conditions. If the drive speed increases significantly faster than the maximum acceleration capacity of the vehicle, at least one of the driven wheels spins.
  • the control device 22 switches on the electric motor 28 of the two hydraulic pumps 30, 30 ', as a result of which they convey brake fluid into the wheel brake cylinders 16, 16' of the driven wheels.
  • the control device 22 actuates the two changeover valves 20, 20 'alternately for a short it of, for example, 500 ms.
  • the ant. Speed is reduced during the activation of a switchover. il ⁇ 20, 20 ', ⁇ o the wheel spins, its wheel brake cylinder r 16, 16' to the; respective switching valve 20, 20 'is connected.
  • this changeover valve 20, 20 'of the spinning wheel is braked so strongly that it no longer spins.
  • the ratio the switching duration and the duration of the rest position of the respective changeover valve 20, 20 ' the braking power and thus the force transmitted from the respective wheel to the vehicle surface can be limited.
  • the described starting aid is only effective when the brake pedal 10 is not operated. Furthermore, the described starting aid is only effective up to a vehicle speed of approximately 30 km / h.
  • the demobilization device 34 is to act on all vehicle wheels and if the demobilization device is to additionally offer a starting aid, this can be done by applying all the wheel brake cylinders 16, 36 of a brake circuit via the changeover valve 20, the wheel brake cylinder 36 not driven wheel can be separated from the hydraulic pump 30 by additional shut-off valves (not shown) if the starting aid is effective.
  • FIG. 3 shows a third exemplary embodiment of a demobilization device 34 according to the invention. It is integrated in a dual-circuit brake system of a motor vehicle that has an ABS system.
  • the demobilization device 34 essentially coincides with the demobilization device 34 shown in FIG. 2, its function is the same.
  • the statements made in relation to FIGS. 1 and 2 also apply to the exemplary embodiment of the invention shown in FIG. 3. The same parts are provided with the same reference numerals.
  • each brake circuit there is a changeover valve 20, 20 "with an integrated pressure relief valve 24, 24 'which, in contrast to the embodiment shown in FIG. 2, applies to all wheel cylinders 16, 16'. 36, 36 'of this brake circuit acts.
  • a hydraulic pump 30, 30' is switched, which is driven by a common " electric motor 28.
  • the parts: of the demobilization device 34 are controlled by a control unit 22.
  • the brake system according to FIG. 3 has an ABS device 40 which is known per se.
  • the demobilization device 34 works independently of the ABS device 40. Deviating from the demobilization device 34 shown in FIG. 2, the inventive demobilization device 34 shown in FIG. 3 acts on the wheel brake cylinders 16, 16 ', 36, 36' of all vehicle wheels.
  • an additional shut-off valve 44, 44 ' is arranged in each of the brake lines 42, 42', which lead to non-driven wheels 36, 36 'of the cylinder.
  • the additional shut-off valve 44, 44 ' is actuated by the control unit 22, if no. the traction help is effective, in this case it blocks the brake lines 42, 42 'leading to the wheel brake cylinders 36, 36' of non-driven wheels.
  • demobilization device 34 has speed sensors 46, 46 'on each wheel.
  • the Demobili ⁇ ist ⁇ t - - seal 34 can thereby be at their
  • the speeds of each individual wheel are known, so that the speed of a driven wheel can be limited, for example, to the mean value of the speeds of the non-driven wheels, so that the slip of a driven wheel is independent of the nature of the ground individual wheels can be kept very small and thus good drive of the vehicle can be ensured.
  • control device 22 of the de-obilization device 34 and a control device of the ABS device 40 can be combined to form a control device.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Regulating Braking Force (AREA)

Abstract

L'invention part d'un dispositif d'immobilisation (34) de véhicules qui maintient une pression accumulée dans les cylindres (16, 16') de frein des roues par actionnement de la pédale de freinage (14) au moyen d'une soupape d'inversion (20, 20') pour chaque circuit de freinage. L'inconvénient de ces dispositifs est que la pression peut tomber à cause de petites fuites ou d'un refroidissement du liquide de freinage, ce qui permet à nouveau au véhicule de se déplacer. Pour éliminer cet inconvénient, la pression dans le cylindre (16, 16') de frein des roues est accrue par des hydropompes (30, 30') associées chacune à un circuit de freinage lorsqu'une utilisation illicite du véhicule est détectée.
PCT/DE1995/001182 1994-09-30 1995-09-01 Dispositif d'immobilisation de vehicules a moteur et son procede de fonctionnement WO1996010498A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4435153.4 1994-09-30
DE19944435153 DE4435153A1 (de) 1994-09-30 1994-09-30 Demobilisierungseinrichtung für ein Kraftfahrzeug und Verfahren zu dessen Betrieb

Publications (1)

Publication Number Publication Date
WO1996010498A1 true WO1996010498A1 (fr) 1996-04-11

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ID=6529731

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Application Number Title Priority Date Filing Date
PCT/DE1995/001182 WO1996010498A1 (fr) 1994-09-30 1995-09-01 Dispositif d'immobilisation de vehicules a moteur et son procede de fonctionnement

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DE (1) DE4435153A1 (fr)
WO (1) WO1996010498A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19625919B4 (de) * 1996-06-28 2007-12-13 Robert Bosch Gmbh System zur Steuerung der Bremswirkung bei einem Kraftfahrzeug
DE60024643D1 (de) * 2000-11-22 2006-01-12 Control Car System S R L Diebstahlsicherung für Kraftfahrzeuge
DE10343985B4 (de) * 2002-09-20 2017-05-04 Continental Teves Ag & Co. Ohg Verfahren zur Verhinderung des Wegrollens an einer Steigung
AU2008345706A1 (en) * 2007-12-21 2009-07-09 Richard Oliver Vehicle immobilization system
DE102011117437B4 (de) * 2011-10-29 2014-02-13 Audi Ag Festsattelbremse mit elektrischer Parkbremse
CN103661333B (zh) * 2012-09-18 2017-04-05 博世汽车部件(苏州)有限公司 基于abs实现坡道保持控制功能的方法、系统和车辆

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981003151A1 (fr) * 1980-05-07 1981-11-12 Caterpillar Tractor Co Commande du patinage de roues entrainees differentiellement
EP0165889A1 (fr) * 1984-06-01 1985-12-27 Maurice Perret Dispositif antivol pour véhicules automobile agissant sur le circuit hydraulique de freinage
FR2588812A1 (fr) * 1985-10-18 1987-04-24 Avaac Systems Sa Dispositif d'anti-vol pour vehicule par blocage hydraulique des roues
DE3802015A1 (de) * 1988-01-25 1989-07-27 Teves Gmbh Alfred System zur sicherung eines mit abs und/oder asr ausgeruesteten fahrzeugs
WO1992005990A1 (fr) * 1990-10-05 1992-04-16 Alfred Teves Gmbh Systeme de freinage avec installation servant a la fois pour la regulation du glissement au freinage et pour la regulation du glissement a l'entrainement
DE4130028A1 (de) * 1991-09-10 1993-03-11 Juergen Walther Diebstahlsicherung insbesondere fuer pkw's

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981003151A1 (fr) * 1980-05-07 1981-11-12 Caterpillar Tractor Co Commande du patinage de roues entrainees differentiellement
EP0165889A1 (fr) * 1984-06-01 1985-12-27 Maurice Perret Dispositif antivol pour véhicules automobile agissant sur le circuit hydraulique de freinage
FR2588812A1 (fr) * 1985-10-18 1987-04-24 Avaac Systems Sa Dispositif d'anti-vol pour vehicule par blocage hydraulique des roues
DE3802015A1 (de) * 1988-01-25 1989-07-27 Teves Gmbh Alfred System zur sicherung eines mit abs und/oder asr ausgeruesteten fahrzeugs
WO1992005990A1 (fr) * 1990-10-05 1992-04-16 Alfred Teves Gmbh Systeme de freinage avec installation servant a la fois pour la regulation du glissement au freinage et pour la regulation du glissement a l'entrainement
DE4130028A1 (de) * 1991-09-10 1993-03-11 Juergen Walther Diebstahlsicherung insbesondere fuer pkw's

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Un antivol pour voiture bloque les freins", TOUTE L'ELECTRONIQUE, vol. 523, PARIS, pages 4 - 5 *

Also Published As

Publication number Publication date
DE4435153A1 (de) 1996-04-04

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