WO1989008031A1 - Dispositif de commande de la pression de gonflage des pneus de vehicules - Google Patents

Dispositif de commande de la pression de gonflage des pneus de vehicules Download PDF

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Publication number
WO1989008031A1
WO1989008031A1 PCT/AT1989/000019 AT8900019W WO8908031A1 WO 1989008031 A1 WO1989008031 A1 WO 1989008031A1 AT 8900019 W AT8900019 W AT 8900019W WO 8908031 A1 WO8908031 A1 WO 8908031A1
Authority
WO
WIPO (PCT)
Prior art keywords
wheel
control
air pressure
valve
axle
Prior art date
Application number
PCT/AT1989/000019
Other languages
German (de)
English (en)
Inventor
Erich Hainzl
Original Assignee
Sondertechnik Gesellschaft M.B.H.
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 Sondertechnik Gesellschaft M.B.H. filed Critical Sondertechnik Gesellschaft M.B.H.
Publication of WO1989008031A1 publication Critical patent/WO1989008031A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/001—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/001—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving
    • B60C23/004—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving the control being done on the wheel, e.g. using a wheel-mounted reservoir

Definitions

  • the invention relates to a device for air pressure control of the pneumatic tires of a vehicle with an air pressure source connected to the pneumatic tires via a rotary connection and a wheel-side control valve, with a control device for the wheel-side control valves having a setpoint value for the tire air pressure.
  • a control device for the wheel-side control valves having a setpoint value for the tire air pressure.
  • an electrical measuring circuit for the tire air pressure on the individual wheels and with an inductive transformer between the wheels and their axles on the one hand for energy transmission from an axle-side vibration generator to a wheel-side capacitor stage for the energy supply of the measuring circuit and on the other hand for signal transmission from the measuring circuit to an axis-side signal receiver in the energy transmission breaks, which is connected to the control device for the actual value measurement.
  • the transmitter consists of a non-rotatable coil assigned to the axle and a coil rotating with the wheel, the energy transmission from the axle to the wheel and the signal transmission from the wheel to the axle are independent of the rotational position of the wheel, so that a constant monitoring of the tire air pressure is possible regardless of the switching position of a control valve for the tire air pressure. It is consequently also possible to use such a monitoring device for controlling the tire air pressure in that the transmitted measured values are fed to a corresponding control device for the tire air pressure.
  • the invention is therefore based on the object of improving a device of the type described at the outset such that the air pressure in the individual pneumatic tires of a vehicle is not only monitored, but can also be set quickly and precisely with the aid of wheel-side control valves without the control unit and the drive energy for the control valves have to be routed via the rotary connection of the compressed air line.
  • the invention achieves the stated object in that the wheel-side control valves have an electromagnetically actuatable actuator which can be connected to the capacitor stage and whose control signal input is applied via the transformer to the control signal output of the control device.
  • wheel-side control valves are provided with an electromagnetically actuated actuator, these control valves can also be actuated via electrical control signals which are transmitted to the wheel by the control device via the transmitter provided for the measurement value monitoring, so that the need to: to beat the wheel-side control valves via the rotary connection with compressed air pulses, and the associated disadvantages are eliminated.
  • the actuator comprises an electromagnetic pilot valve connected to the air discharge line of the respective pneumatic tire for the pneumatically actuatable control valve, so that the drive energy for the pneumatic adjustment of the control valve is obtained via the tire air pressure and the electrical energy required for the adjustment of the pilot valve can be kept very small.
  • the transmission of the control signals for actuating the wheel-side control valve can take place like the transmission of the measurement signals during the pauses in the energy transmission. More advantageous conditions result, however, when the control signal output of the control device controls a modulation stage for the vibrations of the vibration generator and when a demodulation stage for the transmitted modulated generator vibrations is connected to the transmitter on the wheel side, which acts on the control signal input of the actuator is.
  • This modulation of the generator vibrations enables the control signals to be transmitted from the axle to the wheel during the energy transfer without impairing the charging of the capacitor stage via a rectifier.
  • the transmission sequence of the measurement signals from the wheel to the axle-side signal receiver can thus are increased or the charging time for the capacitor stage is increased.
  • the control signal can be detected again via a corresponding demodulation stage and fed to the control signal input of the actuator.
  • the modulation of the amplitude, the pulse length, the phase position and the frequency of the generator vibrations, usually a square wave, are open to the control signal transmission. In view of the desired interference immunity of the signal transmission, however, amplitude modulation will hardly be carried out in practice.
  • the pneumatic tires In order to be able to actually keep the rotary connection for the compressed air line for filling a pneumatic tire free of pressure during normal operation, the pneumatic tires must be connected to the compressed air source via an axle-side filling valve controlled by the control device, so that the pressure of the air pressure source does not reach through to the pressure connection can. It is advantageous to fill the tires on the wheel side via a separate check valve so that the wheel-side control valve does not necessarily have to be actuated with the filling valve.
  • the wheel-side control valve can therefore be switched on as the exclusive drain valve in the air discharge line, so that only the axle-side filling valve needs to be actuated for tire inflation and only the wheel-side control valve needs to be actuated for the tire drain.
  • the air discharge line can open to the outside on the wheel side. However, it is often desirable to return the discharge air to the axle side.
  • the air discharge line of the pneumatic tires can be routed from the wheel to the axle side via the rotary connection.
  • FIG. 1 shows an inventive device for air pressure control the pneumatic tires of a vehicle in a simplified block diagram
  • FIG. 3 shows the basic arrangement of a transmitter between the rotating wheel and its axis in a schematic axial section
  • Fig. Two ferromagnetic rings for receiving the transformer coils in detail in a side view on a larger scale.
  • the device for controlling the air pressure of the pneumatic tires 1 of a vehicle (not shown in more detail) consists of a compressed air source 2 in the form of a compressed air reservoir, which is connected to a compressed air line 5 via an air dryer 3 and a switching valve *, from the branch lines 7 go out to the individual pneumatic tires I.
  • These branch lines 7, each guided via a rotary connection 8 between the wheel and its axle, have an electromagnetic filling valve 9 on the axle side and a check valve 10 on the wheel side.
  • Control valves 11 are provided on the wheel side for emptying the pneumatic tires 1 in a drain line 13 provided with a filter 12.
  • control valves 11 have an electromagnetically actuated actuator 14, which comprises an electromagnetic pilot valve 15 connected to the drain line 13, so that the control valve 11 is adjusted against the force of a return spring via the tire air pressure against the force of a return spring after electrical actuation of the pilot valve 15 and the Drain line 13 connected to a wheel-side drain line 16.
  • the drain line 13 can, however, also be connected via a connecting line 17 indicated by dash-dotted lines, via the rotary connection 8 and the filling valve 9 to an axis-side outlet. drain line 18 are connected.
  • a measuring circuit 19 with a sensor 20 for the tire air pressure is assigned to each of them, the actual value of which is fed to a control device 21 with a setpoint specification 22, so that the tire inflation can be controlled via a setpoint / actual value comparison.
  • the air pressure line 3 is first connected to the compressed air source 2 via the switching valve 4 and then the corresponding filling valve 9 for the pneumatic tire 1 to be inflated, which is therefore operated by the compressed air Source is applied here until the measuring circuit 19 indicates that the actual value of the tire air pressure corresponds to the predetermined target value.
  • the filling valve 9 is reset on the basis of such a target / actual value comparison via the control device 21 into the starting position in which the rotary connection 8 is vented via the drain line 18, the set tire air pressure being held by the check valve 10.
  • the wheel-side control valve 11 is actuated and switched over via the tire air pressure thus released for valve adjustment, so that air can flow out of the pneumatic tire 1 via the discharge line 16 or 18 until the desired reduced tire air pressure is reached , after which the control valve 9 is adjusted to the initial position by resetting the pilot valve 15.
  • a transmitter 23 is provided between each wheel and its associated axle, which according to the exemplary embodiment shown has a wheel associated with the wheel , attached to the wheel rim 2 * Coil 25 and a coaxial thereto, arranged on the wheel axis 26: Coil 27.
  • This axially fixed coil 27 is connected to a vibration generator 28 which is supplied with energy by a power supply 29 fed by the vehicle battery and z.
  • B. is designed as a rectangular generator in the form of a chopper.
  • This vibration generator 28 induces a corresponding AC voltage in the wheel-side coil 25 via the axis-fixed coil 27, which results in an AC current which charges a capacitor stage 31 via a rectifier 30.
  • This capacitor stage 31 serves to supply power to the measuring circuit 19, which is applied to the capacitor stage 31 via a circuit 32 for voltage stabilization.
  • the measuring circuit 19 comprises an analog-digital converter 33, for the measuring signals of the air pressure transmitter 20, which can be designed, for example, as a piezoresistive pressure transmitter in a bridge circuit, a control logic 34 and an oscillator stage 35, which in the usual way via a coupling circuit 36 is connected to the wheel-fixed coil 25 of the transformer 23.
  • the measured values of the pressure transmitter 20 digitized by the analog-digital converter 33 are fed to the control logic 34, which controls the oscillator stage 35 in the sense of frequency shift keying as a function of these measured values, so that each measured value at the signal output 37 of the measuring circuit 19 a specific signal frequency is assigned, which is transmitted by means of the transmitter 23 to an axis-side signal receiver 38.
  • the oscillation generator 28 is switched on via a control circuit 39 only in periodically repeating periods in order to ensure that the signal transmission from the wheel to the axle is not disturbed during the energy transmission breaks to be able to make.
  • the measurement signals received by the signal receiver 38 after demodulation via the control circuit 39, a converter 40 is fed, which converts the electrical signals to the control device 21 for light-indelible forwarding into light signals.
  • the axis-side filling valves 9 can be easily controlled by the control device 21 via corresponding control lines 41. It is more difficult to control the wheel-side control valves 11 because these valves have to be reached via the transmitter 23.
  • the control signal output 42 of the control device 21 provided for this purpose is connected to the converter 40, which forwards the control signals via the control line 43 to the control circuit 39, which forms a modulation stage for the oscillation generator 28, so that, for example, the Vibration frequency of the vibration generator 28 is controlled in dependence on the control signal.
  • the modulated oscillation tapped off via a connecting line 44 can be demodulated on the wheel side and the demodulated control signal can be used to act on the control signal input 45 of the electromagnetically actuatable actuator 14 of the wheel-side control valve 11, which according to the control signal either in its Position remains or is switched.
  • control signals 34 can be used to record the measurement signals from the wheel to the axle via the control logic 34 can be initiated without fear of an overlap of the measurement signal transmission with the energy transmission.
  • the energy supply for the electromagnetic adjustment of the to control the pneumatic actuator for the Control valve 11 provided for pilot control valve 15 can be provided in the same way as the energy supply to the measuring circuit 19 via the capacitor stage 31, especially since the available energy essentially depends on the size of the capacitor stage 31. Since only a small amount of electrical energy is required to actuate the pilot valve 15, it is also readily possible to transmit additional measured values from the wheel to the axle in addition to the tire air pressure, for example the tire or air temperature, which is caused by the additional input 46 of the analog-digital converter 33 is indicated.
  • the coils 25 and 27 of the transmitter 23 are each housed in an erromagnetic ring 47, which is U-shaped in cross section and between the legs 48 projecting against the other ring an annular groove for receiving the coils 25 and 37 forms.
  • the two ferromagnetic rings 47 thus give a substantially closed magnetic cross section, only interrupted by an air gap 49 between the two concentric coils 25 and 27, which is not only for a good coupling of the two coils 25 and 27, but also ensures excellent magnetic shielding of the transmitter 23.
  • the two ferromagnetic rings are composed of a large number of ring sections 50 which are electrically insulated from one another, as can be seen in FIG. 4. To hold and fasten these ferromagnetic rings 47, they can additionally be enclosed by a metal ring.
  • the invention is of course not limited to the exemplary embodiment shown.
  • a computer could be used on the wheel side, which takes over the regulation of the air pressure in the tires via the control of the wheel-side control valve 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

Un circuit électrique (19) de mesure de la pression de gonflage des pneus (1) d'un véhicule est agencé sur chaque roue afin de permettre d'ajuster de manière avantageuse la pression de gonflage des pneus. Les circuits électriques (19) sont reliés par un transformateur (23) agencé entre la roue et l'essieu à un récepteur de signaux (38) agencé du côté de l'essieu, de sorte que les soupapes de commande (11) agencées sur les roues puissent être commandées par un agencement de commande (21) en fonction des valeurs réelles mesurées de la pression de gonflage des pneus. Ces soupapes de commande (11) agencées sur les roues sont électromagnétiquement actionnées par des signaux de commande transmis de l'essieu à la roue par le transformateur (23).
PCT/AT1989/000019 1988-02-26 1989-02-27 Dispositif de commande de la pression de gonflage des pneus de vehicules WO1989008031A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA487/88 1988-02-26
AT48788 1988-02-26

Publications (1)

Publication Number Publication Date
WO1989008031A1 true WO1989008031A1 (fr) 1989-09-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT1989/000019 WO1989008031A1 (fr) 1988-02-26 1989-02-27 Dispositif de commande de la pression de gonflage des pneus de vehicules

Country Status (2)

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EP (1) EP0365608A1 (fr)
WO (1) WO1989008031A1 (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0465135A2 (fr) * 1990-06-29 1992-01-08 Col-Ven S.A. Dispositif électropneumatique de protection avec contrôle automatique de la pression
US5465772A (en) * 1988-07-14 1995-11-14 Col-Ven S.A. Controlling and maintaining air-pressure in vehicle tires
EP0864450A1 (fr) * 1997-03-07 1998-09-16 SKF INDUSTRIE S.p.A. Arrangement d'un générateur de courant intégré à un palier
EP2072290A2 (fr) 2007-12-14 2009-06-24 PTG Reifendruckregelsysteme GmbH Installation de réglage de la pression des pneus et passage tournant correspondant
DE102011017118A1 (de) * 2011-04-14 2012-10-18 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Vorrichtung zur Anpassung des Ist-Reifendrucks wenigstens eines Reifens eines Fahrzeugs an einen aktuellen Soll-Reifendruck während der Fahrt
CN104442223A (zh) * 2014-11-08 2015-03-25 胡浩茫 互通式管路系统
GB2516704B (en) * 2013-07-30 2016-02-10 Jaguar Land Rover Ltd Vehicle wheel assembly
DE102015213692A1 (de) 2015-07-21 2017-01-26 Robert Bosch Gmbh Radnabenantrieb
DE102015225355A1 (de) 2015-12-16 2017-06-22 Robert Bosch Gmbh Radnabenantrieb mit einer Drehvorrichtung
DE102015225291A1 (de) 2015-12-15 2017-06-22 Robert Bosch Gmbh Radnabenantrieb
US10953707B2 (en) 2015-12-29 2021-03-23 Bridgestone Americas Tire Operations, Llc Air distribution system for rapid tire inflation
US10953706B2 (en) 2015-12-29 2021-03-23 Bridgestone Americas Tire Operations, Llc Air storage system for rapid tire inflation
US11021023B2 (en) 2015-12-29 2021-06-01 Bridgestone Americas Tire Operations, Llc Rapid tire inflation system with air compressor
DE112017000471B4 (de) 2016-01-21 2022-02-03 Dana Heavy Vehicle Systems Group, Llc Integrierte sensorventilvorrichtung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2630511A1 (de) * 1976-07-07 1978-01-12 Wabco Westinghouse Gmbh Reifendruckregelanlage
EP0193452A1 (fr) * 1985-02-18 1986-09-03 Labinal Dispositif de dégonflage pour pneumatiques de véhicules
DE3600260A1 (de) * 1986-01-08 1987-07-09 Bosch Gmbh Robert Schaltungsanordnung zur messwertuebertragung an fahrzeugraedern

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2630511A1 (de) * 1976-07-07 1978-01-12 Wabco Westinghouse Gmbh Reifendruckregelanlage
EP0193452A1 (fr) * 1985-02-18 1986-09-03 Labinal Dispositif de dégonflage pour pneumatiques de véhicules
DE3600260A1 (de) * 1986-01-08 1987-07-09 Bosch Gmbh Robert Schaltungsanordnung zur messwertuebertragung an fahrzeugraedern

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5465772A (en) * 1988-07-14 1995-11-14 Col-Ven S.A. Controlling and maintaining air-pressure in vehicle tires
US5618361A (en) * 1988-07-14 1997-04-08 Col-Ven S.A. Pressure sensor and apparatus controlling and maintaining air-pressure in vehicle tires
EP0465135A2 (fr) * 1990-06-29 1992-01-08 Col-Ven S.A. Dispositif électropneumatique de protection avec contrôle automatique de la pression
EP0465135A3 (en) * 1990-06-29 1992-09-23 Col-Ven S.A. Electronic-pneumatic protecting device with pressure automatic control
EP0864450A1 (fr) * 1997-03-07 1998-09-16 SKF INDUSTRIE S.p.A. Arrangement d'un générateur de courant intégré à un palier
EP2072290A3 (fr) * 2007-12-14 2010-03-24 PTG Reifendruckregelsysteme GmbH Installation de réglage de la pression des pneus et passage tournant correspondant
EP2072290A2 (fr) 2007-12-14 2009-06-24 PTG Reifendruckregelsysteme GmbH Installation de réglage de la pression des pneus et passage tournant correspondant
DE102011017118A1 (de) * 2011-04-14 2012-10-18 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Vorrichtung zur Anpassung des Ist-Reifendrucks wenigstens eines Reifens eines Fahrzeugs an einen aktuellen Soll-Reifendruck während der Fahrt
DE102011017118B4 (de) * 2011-04-14 2013-10-17 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Vorrichtung zur Anpassung des Ist-Reifendrucks wenigstens eines Reifens eines Fahrzeugs an einen aktuellen Soll-Reifendruck während der Fahrt
US20140034202A1 (en) * 2011-04-14 2014-02-06 Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh Device for Adapting the Tire Pressure During Travel
US9358848B2 (en) 2011-04-14 2016-06-07 Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh Device for adapting the tire pressure during travel
US9878586B2 (en) 2013-07-30 2018-01-30 Jaguar Land Rover Limited Vehicle wheel assembly
GB2516704B (en) * 2013-07-30 2016-02-10 Jaguar Land Rover Ltd Vehicle wheel assembly
CN104442223A (zh) * 2014-11-08 2015-03-25 胡浩茫 互通式管路系统
DE102015213692A1 (de) 2015-07-21 2017-01-26 Robert Bosch Gmbh Radnabenantrieb
DE102015225291A1 (de) 2015-12-15 2017-06-22 Robert Bosch Gmbh Radnabenantrieb
DE102015225355A1 (de) 2015-12-16 2017-06-22 Robert Bosch Gmbh Radnabenantrieb mit einer Drehvorrichtung
US10953707B2 (en) 2015-12-29 2021-03-23 Bridgestone Americas Tire Operations, Llc Air distribution system for rapid tire inflation
US10953706B2 (en) 2015-12-29 2021-03-23 Bridgestone Americas Tire Operations, Llc Air storage system for rapid tire inflation
US11021023B2 (en) 2015-12-29 2021-06-01 Bridgestone Americas Tire Operations, Llc Rapid tire inflation system with air compressor
DE112017000471B4 (de) 2016-01-21 2022-02-03 Dana Heavy Vehicle Systems Group, Llc Integrierte sensorventilvorrichtung

Also Published As

Publication number Publication date
EP0365608A1 (fr) 1990-05-02

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