EP3191317A1 - Dispositif de régulation de la pression de pneu avec valve relais à pilotage pneumatique - Google Patents

Dispositif de régulation de la pression de pneu avec valve relais à pilotage pneumatique

Info

Publication number
EP3191317A1
EP3191317A1 EP15757295.9A EP15757295A EP3191317A1 EP 3191317 A1 EP3191317 A1 EP 3191317A1 EP 15757295 A EP15757295 A EP 15757295A EP 3191317 A1 EP3191317 A1 EP 3191317A1
Authority
EP
European Patent Office
Prior art keywords
tire
pressure
tire pressure
valve
pneumatic
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.)
Withdrawn
Application number
EP15757295.9A
Other languages
German (de)
English (en)
Inventor
Kornél Kantor
Janos Toth
Tamas Toth
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.)
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Original Assignee
Knorr Bremse Systeme fuer Nutzfahrzeuge 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 Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH filed Critical Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Publication of EP3191317A1 publication Critical patent/EP3191317A1/fr
Withdrawn legal-status Critical Current

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
    • B60C23/003—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres
    • B60C23/00354—Details of valves
    • 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
    • B60C23/003—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres
    • B60C23/00372—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres characterised by fluid diagrams
    • 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
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver

Definitions

  • the invention relates to a tire pressure regulating device for at least one tire of a utility vehicle, with a pneumatically piloted relay valve, which performs a compressed air supply leading to the tire working line from a pressure source in accordance with a pneumatic pilot, which electropneumatic converter means for converting an electrical Anêtsignais in a the corresponding includes pneumatic pilot control signal for the relay valve. Furthermore, the invention also relates to methods for filling at least one tire of a commercial vehicle with such a tire pressure regulating device.
  • the field of application of the invention extends primarily to commercial vehicles, which are used under different travel conditions, such as paved roads, terrain, sand, swamp and the like. These require adaptation of the tire pressure even while driving to different ground conditions. Therefore, in the case of commercial vehicles of interest here, a tire filling device is present which adapts the existing actual tire pressure of the tires of the commercial vehicle to a preset target tire pressure depending on the underlying conditions.
  • Such Reifenfeldllvorraum is usually part of a pneumatic system of the commercial vehicle, which may also include a pneumatic brake device and possibly a pneumatic spring device. From the well-known prior art tire inflating devices emerge, which use a high-flow rate ventilation valve to pressurize one or more tires.
  • a pressure deviation is determined in comparison with a desired target specification in order then to adjust the tire pressure.
  • a selection of the tire to be filled from a plurality of tires of a vehicle takes place via selector valves, which establish a connection between the tire to be filled and the valve device.
  • the vent valve is connected in series with the vent valve and is driven either manually or electrically.
  • a generic tire pressure regulating device which uses a relay valve for tire inflation.
  • the tire inflator consists of a valve system in which solenoid valves and relay valves are operatively connected to each other. According to the
  • Switching position of a manual control switch are used to set the target value, control functions are carried out, which cause an increase or decrease of the tire pressure.
  • control functions are carried out, which cause an increase or decrease of the tire pressure.
  • the compressed air flowing out of the tire is discharged into the atmosphere via an air outlet of a relay valve, which is in direct connection to a wheel valve.
  • the setpoint inputs selected manually by the control switch are forwarded via an electrical signal line to an electromagnetic converter, which activates the pneumatic pilot control of the relay valve.
  • a sensor for measuring the actual tire pressure is only the display and is not part of a closed loop.
  • the object is achieved on the basis of a tire pressure regulating device according to the preamble of claim 1 in conjunction with its characterizing features.
  • the object is achieved by claim 5 and 6.
  • the respective dependent claims give advantageous developments of the invention.
  • the invention includes the technical teaching that the converter means comprise an electropneumatic venting valve and an electropneumatic venting valve for pneumatic signal input for increasing or decreasing the tire pressure.
  • a pressure sensor arranged on the working line side of the relay valve measures the course of the tire pressure and the measurement signal is continuously applied to an electronic control unit for adjusting forwards the specified nominal tire pressure, for which purpose either the venting valve or the venting valve is electrically actuated or both valves are kept in the closed state.
  • the advantage of the solution according to the invention is, in particular, that it is possible to react quickly to a control deviation that is to be compensated by the continuous closed control created thereby. Due to the continuous monitoring process of the tire pressure, there is constant monitoring for equalized target pressure deviations. No step-by-step ventilation or bleeding phases are required to achieve the desired Tire inflation pressure at the end of the control process.
  • the solution according to the invention sets a new pressure value on request, ie vented when a higher target tire pressure is needed and vented when a lower tire pressure is needed. Otherwise the feedforward control is shut off. It is not directly measured the actual tire pressure via a pressure sensor arranged on the tire, but in an analogous manner, the output side of the relay valve outgoing working pressure in the working line to the tire.
  • the setpoint for aeration or venting can be changed continuously during ventilation to reduce the time required for a required tire pressure compensation.
  • a respective associated wheel valve be provided in order to make a selection for one of the tires for which a required tire ventilation or ventilation is to be carried out.
  • a single tire inflation device is used for several tires, which adapts the TARGET tire pressure for several attached tires as needed.
  • the electropneumatic venting valve and venting valve which, by mutual control by the control unit, predetermine the desired control pressure for the relay valve as monostable electropneumatic 2/2-way valves.
  • the tire inflation device of the type described above is preferably controlled by the control unit in such a way that in the case of too low a tire pressure at the beginning of the subsequently initiated ventilation first a higher pressure than the nominal tire pressure is set to accelerate the ventilation.
  • the control unit in the case of too high a tire pressure at the beginning of the venting initiated as a result of the lowest possible pressure above the cut-off, the so-called "shut-off pressure", the wheel valve to accelerate the vent can also be achieved by an initial offset to the control signal of the control device
  • the initial impact or discount to the target tire pressure to be corrected or the control deviation representing the control value can be predefined on the basis of a characteristic curve stored in the control unit In the case of aeration, it ensures that the specified target value drops continuously during ventilation, and then at the end of the ventilation, the target tire pressure is reached, and this is also implemented in the venting mode.
  • control unit in addition to the tire pressure measured with the pressure sensor, further measurement signals originating from the on-board pneumatics, such as the current outside temperature, the operating state of the vehicle engine or the current supply pressure value, for the determination of the pneumatic pre Signal is processed and from this a filling time of the tire is calculated in order to carry out the ventilation of the tire in the calculated period of time. Furthermore, the filling time can be recalculated by the electronic control unit even after a change in the tire pressure and the further measurement signals of the on-board pneumatics in order to make a dynamic adjustment can.
  • the ventilation is then denied or interrupted by the electronic control unit when an evaluation of the further measurement signals of the on-board pneumatics reveals that the execution of a higher-priority basic function of the on-board pneumatics would be jeopardized by the compressed air requirement of the tire filling.
  • the tire pressure regulation can be done with the same pneumatic system, which performs, for example, the safety related more relevant vehicle braking, without affecting their function.
  • the override of the ventilation or the Untersteu- the ventilation of the tire by the control unit is stopped when the measured by the pressure sensor actual tire pressure has reached at least 90% of the target tire pressure. Best efforts are continued by the inertias contained in the system. This does not lead to an exceeding of the target tire pressure, which would immediately trigger a venting of the tire by the system vibrations generated thereby. A targeted achievement of the target value is thereby possible.
  • FIG. 1 shows a schematic representation of a compressed air supply system for a commercial vehicle
  • FIG. 2 shows a block diagram representation of a tire filling device for filling two tires of a commercial vehicle
  • FIG. 3 shows a graphic representation of a desired value offset with offset for rapid pressure equalization.
  • a compressed air system of a commercial vehicle (not shown here) consists essentially of a compressor 1 for generating compressed air from the ambient air, to which an air dryer 2 is connected downstream of the compressed compressed air to remove the moisture.
  • the compressed air dried thereby serves to supply various compressed air consumers 3 and, inter alia, via a pressure limiting valve 4 also to supply a tire filling device 5 for filling at least one tire 6 connected thereto.
  • the tire filling device 5 essentially consists of two tires 6a and 6b connected thereto a relay valve 7, which carries out a pressurization of a leading to the tires 6 a and 6 b working line 8, starting from a supply pressure wave 9.
  • the vent valve 10 is used to increase the pilot pressure, which triggers an increase in the tire pressure through the relay valve 7.
  • the vent valve 11 serves to reduce the pilot pressure, which results in a reduction of the tire pressure.
  • the existing tire pressure is measured in an analogous manner via a pressure sensor 12 arranged on the operating line 8 of the relay valve 7.
  • the electrical measurement signal is fed to an electronic control unit 13 on the input side.
  • the electronic control unit 13 determines the control deviation on the basis of the predefined setpoint tire pressure Psoii and as a result controls either the ventilation valve 10 for generating the tire pressure or the venting valve 11 for reducing the tire pressure.
  • the tire pressure is electrically applied.
  • a separate wheel valve 14a or 14b is provided per tire 6a and 6b to make a selection of tire inflation.
  • the electropneumatic venting valve 10 and the electro-pneumatic venting valve 11 are connected in series with one another and both are designed as a monostable electropneumatic 2/2-way valve.
  • both valves are mutually controllable.
  • a higher pressure than the setpoint tire pressure p soll is given by the control unit 13 in the case of a too low actual tire pressure at the beginning of the ventilation.
  • the same is done analogously in the venting, ie a controlled reduction in tire pressure.
  • FIG. 3 shows a linear characteristic stored in the control unit 13, which has an initial impact ⁇ to the target tire pressure to be corrected. This initial impact decreases continuously in this embodiment from time tl to time t2, until it has dropped to the level of the predetermined target tire pressure pl.
  • the ventilation of the tire is stopped by the control unit when the actual tire pressure measured by the pressure sensor 12 has almost reached the target tire pressure.
  • the closed loop control also includes predetermined thresholds to avoid overshoot of the control system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

La présente invention concerne un dispositif de régulation de la pression de pneu pour au moins un pneu (6) d'un véhicule utilitaire, comprenant une valve relais (7) qui charge en air comprimé une conduite de travail (8) menant au pneu (6) depuis une source de pression (9) d'après les indications d'une commande pilote pneumatique, laquelle comprend des moyens convertisseurs électropneumatiques destiné à convertir un signal de commande électrique en un signal pilote pneumatique correspondant pour la valve relais (7). Les moyens de conversion possèdent une valve de ventilation électropneumatique (10) et une valve de purge d'air électropneumatique (11) destinées à la signalisation pneumatique en vue d'augmenter ou de réduire la pression de pneu. La signalisation pneumatique s'effectue ici conformément à des prescriptions spéciales.
EP15757295.9A 2014-09-10 2015-09-04 Dispositif de régulation de la pression de pneu avec valve relais à pilotage pneumatique Withdrawn EP3191317A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014113063.4A DE102014113063A1 (de) 2014-09-10 2014-09-10 Reifendruckreguliervorrichtung mit einem pneumatisch vorgesteuerten Relaisventil
PCT/EP2015/070229 WO2016037935A1 (fr) 2014-09-10 2015-09-04 Dispositif de régulation de la pression de pneu avec valve relais à pilotage pneumatique

Publications (1)

Publication Number Publication Date
EP3191317A1 true EP3191317A1 (fr) 2017-07-19

Family

ID=54035258

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15757295.9A Withdrawn EP3191317A1 (fr) 2014-09-10 2015-09-04 Dispositif de régulation de la pression de pneu avec valve relais à pilotage pneumatique

Country Status (6)

Country Link
US (1) US10569604B2 (fr)
EP (1) EP3191317A1 (fr)
CN (1) CN107074045B (fr)
BR (1) BR112017003849A2 (fr)
DE (1) DE102014113063A1 (fr)
WO (1) WO2016037935A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018132134B4 (de) 2018-12-13 2021-07-29 Bernd Estermeier Reifendruckregulierung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3300457A1 (de) * 1983-01-08 1984-07-12 Robert Bosch Gmbh, 7000 Stuttgart Reifendruck-regeleinrichtung

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3105037A1 (de) 1981-02-12 1982-09-02 Robert Bosch Gmbh, 7000 Stuttgart Reifendruckregelanlage
DE3308080A1 (de) * 1983-03-08 1984-09-20 Robert Bosch Gmbh, 7000 Stuttgart Vorrichtung zur gegenseitigen anpassung von reifendruck und fahrzeuggeschwindigkeit
DE3405101A1 (de) 1984-02-14 1985-08-22 Theresia 7799 Illmensee Bohler Koppelvorrichtung fuer einkaufswagen und dgl.
US4754792A (en) * 1984-06-04 1988-07-05 Eaton Corporation Tire valve assembly for central tire inflation system
US4724879A (en) * 1984-06-04 1988-02-16 Eaton Corporation Central tire inflation system
DE3501179A1 (de) * 1985-01-16 1986-07-17 Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover Elektrische bremsanlage
US4924926A (en) * 1988-08-15 1990-05-15 Eaton Corporation Central tire inflation system
DE3833873C2 (de) * 1988-10-05 1997-07-31 Iveco Magirus Reifendruckregelanlage zur Änderung des Luftdruckes in Fahrzeugreifen während der Fahrt
DE3836105A1 (de) * 1988-10-22 1990-04-26 Goeppner Kaiserslautern Eisen Reifendruckregelanlage fuer gelaendegaengige kraftfahrzeuge
DE19804249A1 (de) * 1998-02-04 1999-08-05 Deere & Co Vorrichtung und Verfahren zur Einstellung des Reifendrucks an einem Fahrzeug
DE19903265A1 (de) * 1999-01-28 2000-08-03 Bosch Gmbh Robert Verfahren und Vorrichtung zur Überwachung einer Steuereinrichtung in einem Fahrzeug
CA2805057C (fr) * 2010-07-30 2015-10-20 Hendrickson Usa, L.L.C. Systeme de gonflage de pneu comportant un circuit de degonflage distinct
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
DE102011104760A1 (de) 2011-06-18 2012-12-20 Wabco Gmbh Drucksteuereinrichtung für eine Reifenfüllanlage mit Drehdurchführung, Drehdurchführung, Reifenfüllanlage, Kraftfahrzeug mit Reifenfüllanlage und Reifendruckänderungsverfahren
DE102012008002B4 (de) 2012-04-20 2019-03-07 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Pneumatische Einrichtung eines Fahrzeugs, umfassend eine Reifendrucksteuervorrichtung
DE102012106549B4 (de) * 2012-07-19 2018-07-12 Haldex Brake Products Aktiebolag Druckluftaufbereitungseinrichtung mit Reifenfüllanschluss
CN204037244U (zh) * 2014-08-30 2014-12-24 李宝民 一种汽车轮胎自动充放气系统

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3300457A1 (de) * 1983-01-08 1984-07-12 Robert Bosch Gmbh, 7000 Stuttgart Reifendruck-regeleinrichtung

Also Published As

Publication number Publication date
CN107074045A (zh) 2017-08-18
BR112017003849A2 (pt) 2017-12-05
US10569604B2 (en) 2020-02-25
DE102014113063A1 (de) 2016-04-21
WO2016037935A1 (fr) 2016-03-17
CN107074045B (zh) 2019-04-12
US20170174011A1 (en) 2017-06-22

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