WO2009106376A1 - Procédé pour la compensation d'une perte par fuite dans une installation de régulation de niveau - Google Patents

Procédé pour la compensation d'une perte par fuite dans une installation de régulation de niveau Download PDF

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Publication number
WO2009106376A1
WO2009106376A1 PCT/EP2009/050330 EP2009050330W WO2009106376A1 WO 2009106376 A1 WO2009106376 A1 WO 2009106376A1 EP 2009050330 W EP2009050330 W EP 2009050330W WO 2009106376 A1 WO2009106376 A1 WO 2009106376A1
Authority
WO
WIPO (PCT)
Prior art keywords
compressed gas
pressure
control system
level control
reservoir
Prior art date
Application number
PCT/EP2009/050330
Other languages
German (de)
English (en)
Inventor
Hans-Peter Krauss
Original Assignee
Continental Aktiengesellschaft
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 Continental Aktiengesellschaft filed Critical Continental Aktiengesellschaft
Publication of WO2009106376A1 publication Critical patent/WO2009106376A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
    • B60G17/052—Pneumatic spring characteristics
    • B60G17/0523—Regulating distributors or valves for pneumatic springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K25/00—Axle suspensions
    • B62K25/04—Axle suspensions for mounting axles resiliently on cycle frame or fork
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/90—Maintenance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2300/00—Indexing codes relating to the type of vehicle
    • B60G2300/12—Cycles; Motorcycles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2300/00—Indexing codes relating to the type of vehicle
    • B60G2300/13—Small sized city motor vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/02—Supply or exhaust flow rates; Pump operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/20—Spring action or springs
    • B60G2500/201—Air spring system type
    • B60G2500/2014—Closed systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/30—Height or ground clearance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
    • B60G2600/04—Means for informing, instructing or displaying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
    • B60G2600/08—Failure or malfunction detecting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K25/00—Axle suspensions
    • B62K25/04—Axle suspensions for mounting axles resiliently on cycle frame or fork
    • B62K2025/045—Suspensions with ride-height adjustment

Definitions

  • the invention relates to a method for compensating a loss of leakage in a level control system, in particular in a level control system of a motorcycle or a light vehicle containing the following components: a compressed gas storage a gas spring compressed gas lines - a compressor, with the compressed gas via the compressed gas lines of the
  • Compressed gas storage in the gas spring or from the gas spring in the compressed gas storage can be transferred.
  • a level control system for a motor vehicle in which by means of a compressor gas between a compressed gas reservoir and a gas spring is pumped back and forth as needed, is referred to as a closed level control system.
  • a closed level control system is known for example from DE 199 59 556 Cl. From this document is also known to provide a compressed air line in the level control system, which is connected on the one hand to the input of the compressor and on the other hand to the atmosphere. In this compressed air line is an air dryer and a switchable directional control valve, with which the compressed air line can be locked or switched. With the help of the compressor, compressed air can be drawn in from the atmosphere and pumped via the air dryer into the compressed air reservoir of the level control system.
  • Compressor requires a lot of space, which is not available in a motorcycle or in a light vehicle.
  • the invention has for its object to provide a method for compensating for leakage loss in a level control system, which is suitable for use in a motorcycle or in a light vehicle.
  • the invention is also based on the object to provide a level control system that is suitable for a motorcycle or for in light vehicle.
  • the object is achieved in that the level control system includes a connection for a high pressure gas storage with dry gas, which is connected via a compressed gas line to the compressed gas storage, and that - to compensate for the leakage loss in the level control system of
  • High-pressure gas storage is temporarily connected to the port to transfer dry gas from the high-pressure gas storage in the compressed gas storage.
  • the object is also achieved by the independent claim 10.
  • the advantage achieved with the invention is particularly to be seen in the fact that in the level control system, a small, low-power compressor can be used as to compensate for the leakage loss in the level control system, the compressed gas directly or with little support of the compressor from the high-pressure gas storage in the compressed gas storage of the level control system is überbucht. By using a small compressor space is saved in the motorcycle.
  • Another advantage of the invention is the fact that in the level control system can be additionally dispensed with an air dryer, since the level control system at the initial filling from the factory filled with a dry gas and the high-pressure gas storage contains dry gas (The phrase "dry gas” is to understand that the water content of the gas is so low that at a low temperature threshold (which is determined depending on the application range of the motorcycle between 0 0 C and -50 0 C, preferably between -20 0 C and -40 0 C) of the Dew point of the gas is not yet reached, so that until the low temperature threshold value no water condenses in the gas and consequently in the system above the low temperature threshold then functional impairments of the level control system due to moisture (eg by the freezing of valves) are excluded).
  • dry gas is to understand that the water content of the gas is so low that at a low temperature threshold (which is determined depending on the application range of the motorcycle between 0 0 C and -50 0 C, preferably between -20 0 C and -40 0 C) of the De
  • the compressed gas storage of the level control system directly i. can be filled from the high-pressure gas storage with compressed gas without the involvement of the compressor.
  • the compressor therefore only needs compressed gas between the compressed gas reservoir and the gas spring and pumping it heart.
  • the compressor can be designed very small, since the pressure differences between the compressed gas storage and the gas spring are low.
  • a high-pressure gas storage preferably commercially available CO2 cartridges are used, which have a storage pressure of 60bar.
  • the volume of the high-pressure gas storage is substantially smaller than the volume of the compressed gas storage.
  • the compressed gas storage is at least 10 times as large as the high-pressure gas storage.
  • the compressed gas storage of the level control system has a volume of 1000 - 2000 ccm and the high-pressure gas storage a volume of 20 to 30 cc.
  • a mean system pressure is provided for the compressed gas storage, wherein the compressed gas storage is filled with a leakage compensation with the help of the high-pressure accumulator at least until the medium pressure is present in the compressed gas storage.
  • the average system pressure in the level control system is defined by the same pressure prevailing in the gas spring and in the compressed gas reservoir and that the gas spring assumes a predetermined normal state (in which the structure of the motorcycle is at a certain level). The level control system works optimally when in the
  • the average system pressure is present.
  • the advantage of the development is thus to be seen in the fact that in the level control system after the leakage compensation optimal functionality is guaranteed. It is also possible to pressurize the compressed gas reservoir of the level control system with a leakage compensation (preferably about 1 to 2 bar) beyond the mean system pressure with compressed air. As a result, the additional advantage is achieved that in the compressed gas storage is a compressed gas reserve.
  • the functionality of the level control system remains optimal until the compressed gas reserve escapes due to leakage losses from the level control system or from the compressed gas reservoir. Even then, a compensation of the leakage loss must not be made immediately, but it is sufficient to wait until the
  • Pressure in the compressed gas storage (about 1 to 2 bar) has fallen below the average system pressure.
  • a development of the invention according to claim 5 relates to the particular arrangement of compressed gas lines in the level control system and the connection of these with the aid of a switchable directional control valve.
  • the advantage of this development is the fact that the compressed gas lines of the level control system with the aid of a single switchable way valve can be connected to each other in a suitable manner.
  • the switchable directional control valve to a neutral position in which it blocks the four compressed gas lines.
  • Compressed gas lines in this case is made gas-tight, so that as little as possible or no compressed gas can escape via the compressed gas lines from the level control system.
  • the advantage of this development is the fact that lower sealing requirements can be placed on the compressor of the level control system because the compressed gas storage or the gas spring of the level control system are separated from the compressor when the switchable directional control valve is in the neutral position.
  • the high-pressure gas storage is connected at certain intervals to the compressed gas storage.
  • a high-pressure gas storage with each inspection of the motorcycle to the compressed gas storage in order to compensate for leakage losses in the level control system.
  • the advantage of this development is the fact that a leakage compensation in the level control system is routinely made and thus the functionality of the level control system is always guaranteed.
  • the high-pressure gas storage is connected to the compressed gas storage, if in the level control system certain control operations due to the loss of leakage are no longer possible or no longer possible with a certain control speed.
  • a compensation of the leakage loss can be made when a lifting of the structure of the motorcycle, which is occupied by two people, is no longer possible or no longer with sufficient control speed.
  • the advantage of this development is the fact that the failure or delay of a specific control process in the level control system can be easily determined by the driver of the motorcycle and made the compensation of the leakage loss of the driver independently can be.
  • Another advantage of this development is the fact that a compensation of the loss of leakage is only made when it is actually necessary due to a limited functionality of the level control system.
  • the level control system includes means for closing the pressure in the compressed gas reservoir, wherein a warning signal is emitted when the compressed gas reservoir falls below a predetermined threshold.
  • the predetermined threshold value can in this case be chosen such that the control processes in the level control system are possible with sufficient speed until the threshold value is reached, and only below the threshold value are the control speeds no longer satisfactory.
  • connection via a compressed gas line is connected directly to the compressed gas storage of the level control system.
  • the compressed gas storage is housed in a conventional component of the motorcycle.
  • the advantage of this development is the fact that no separate space needs to be made available for the compressed gas storage.
  • the printer memory can be housed for example in a cavity of the handlebar, the rear swing arm or a frame part.
  • the component is pressure sealed.
  • Compressed gas storage no separate housing is needed, but that the cavity of the component itself can be used as a housing for the compressed gas storage.
  • connection is in the developments according to claims 12 and 13 directly to the usual components of the motorcycle
  • An embodiment and further advantages of the invention will be explained in connection with the following figure, which shows a level control system for a motorcycle in a schematic representation.
  • the level control system includes a compressed gas reservoir 6, a compressor 8 and a gas spring 10, which is part of a known gas spring damper.
  • the compressed gas reservoir 6 is preferably housed in a (not shown) conventional component of the motorcycle.
  • the level control system further includes a switchable directional control valve 14 and compressed gas lines 1 to 4.
  • the compressed gas line 1 is attached on the one hand to the input 16 of the compressor 8 and on the other hand to a first port 18 of the switchable directional control valve 14.
  • the compressed gas line 2 is fastened on the one hand to the outlet 20 of the compressor 8 and on the other hand to a second connection 22 of the switchable directional control valve 14.
  • the compressed gas line 3 is attached on the one hand to the compressed gas reservoir 6 and on the other hand to a third port 24 of the switchable directional control valve 14.
  • the compressed gas line 4 is attached on the one hand for the gas spring damper 12 to the gas spring 10 and on the other hand to a fourth port 26 of the switchable directional control valve. All fastenings of the compressed gas lines are pressure-resistant and gas-tight.
  • the switchable directional control valve 14 can be converted into a first switching position in which the compressed gas line 1 with the compressed gas line 3 and the compressed gas line 2 with the
  • Compressed gas line 4 is connected.
  • the switchable directional control valve 14 is transferred from the state shown in the figure to the first switching position by being pulled upwards. In the first switching position, compressed gas can be transferred from the reservoir 6 into the gas spring damper 12 and thus into the gas spring 10 with the aid of the compressor 8, e.g. to raise the structure of the motorcycle after a payload of the motorcycle.
  • the compressed air line 1 is connected to the compressed air line 4 and the compressed air line 2 to the compressed air line 3.
  • the switchable directional control valve 14 is transferred from the state shown in the figure to the second switching position, in which it is pressed down. In the second
  • Switching position of the switchable directional valve 14 can from the gas spring damper 12 and the Gas spring 10 compressed gas using the compressor 8 are transferred to the compressed gas storage 6, for example, to lower the structure of the motorcycle after a discharge of the motorcycle.
  • the control of the switchable directional control valve 14 and the compressor can be done directly by means of a mechanical switch by the driver of the motorcycle. It is also possible to make a control in the level control system, the switchable directional control valve 14 and the compressor using a (not shown) control electronics of the level control system to control. In addition to the first switching position and the second switching position, the switchable directional control valve 14 can assume a neutral position, which is shown in the figure and in which the switchable directional valve 14, the pressure gas lines 1 to 4 pressure-tight and gas-tight.
  • the level control system includes a port 28, which is connected via a compressed gas line 30 to the compressed gas reservoir 6.
  • a check valve 32 which opens in the direction of the compressed gas reservoir 6.
  • the port 28 is connected to the compressed gas reservoir 6 directly via the compressed gas line 30 (i.e., without interposition of the compressor 8 or a switchable directional control valve).
  • a high pressure gas storage is temporarily connected to the terminal 28 to transfer dry gas from the high pressure accumulator via the check valve 32 in the compressed gas reservoir 6.
  • the volume of the high-pressure gas reservoir 34 is substantially smaller than the volume of the compressed gas reservoir 6.
  • the level control system may additionally include a pressure sensor 36 which is connected via a compressed gas line 38 to the compressed gas line 3. With the help of the pressure sensor 36, the pressure in the compressed gas reservoir 6 can be measured in a manner known per se.
  • the switchable directional valve 14 is in the neutral position, which is shown in the figure. It will be explained below when pressure gas is transferred from the high pressure gas storage 34 into the compressed gas reservoir 6 of the level control system to compensate for a loss of leakage.
  • Gas spring damper or with the air spring 10 can not be raised or no longer with sufficient speed, this is a sign that no longer is enough compressed gas in the compressed gas reservoir 6.
  • the high-pressure accumulator 34 can be connected by the driver of the motorcycle to the terminal 28 and dry gas can be transferred from the high-pressure accumulator 34 into the pressure accumulator 6. Since the easing of the functionality of the level control system is determined by the driver of the motorcycle itself, no pressure sensor in the level control system needs to be provided in this embodiment.
  • an average system pressure of, for example, 12 bar in the level control system is determined by the fact that it is present in a properly filled level control system both in the printer memory and in the gas spring damper 6 or the gas spring 10.
  • the structure of the motorcycle assumes a certain normal level when in the gas spring damper 12, the average system pressure is present and the motorcycle is unloaded.
  • the pressure in the compressed gas storage 6 are measured.
  • the compressed gas storage 6 is at least the average system pressure of 12 bar, if it has not come in the level control system to leakage losses.
  • the pressure in the compressed gas reservoir 6 is below the mean system pressure of 12 bar. If the pressure in the compressed gas reservoir 6 falls below a predetermined threshold of, for example, 10 bar, a warning signal can be given to the driver of the motorcycle the next time the ignition is switched on. It can then be connected by the driver or in a workshop to the terminal 28 of the high-pressure gas storage 34 to overflow dry gas from the high pressure gas storage 34 into the compressed gas storage 6.
  • a filling of the compressed gas reservoir 6 is carried out with the help of high-pressure gas storage 34 in all embodiments as long as to set in the printer memory 6, at least the average system pressure of 12 bar. It is likewise possible for the compressed gas reservoir 6 to be attacked with compressed gas beyond the mean system pressure so that a compressed gas reserve is present in the compressed gas reservoir 6.
  • the pressure up to which the compressed gas reservoir 6 is filled up with the aid of the high-pressure gas reservoir 34 can be determined here by the check valve 32.
  • the check valve 32 is designed so that it uses a standardized high-pressure accumulator 34, which is specially designed for the level control system, at the desired final pressure to which the compressed gas reservoir 6 is to be filled, closes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

L'invention concerne un procédé pour la compensation d'une perte par fuite dans une installation de régulation de niveau d'une motocyclette ou d'un véhicule léger, qui contient les éléments suivants : un réservoir de gaz comprimé (6) – un ressort à gaz (10) – des canalisations d'air comprimé (1, 2, 3, 4) – un compresseur (8), avec lequel du  gaz comprimé peut être transféré par l'intermédiaire des canalisations d'air comprimé (1, 2, 3, 4) depuis le réservoir de gaz comprimé (6) jusque dans le ressort à gaz (10) ou depuis le ressort à gaz (10) jusque dans le réservoir de gaz comprimé (6), l'installation de régulation de niveau contenant un raccordement (28) pour un réservoir de gaz haute pression (34) avec du gaz sec, qui est relié par l'intermédiaire d'une canalisation de gaz comprimé (30) avec le réservoir de gaz comprimé (6), et le réservoir de gaz haute pression (34) étant raccordé par intermittence au niveau du raccordement (28), en vue de la compensation de la perte par fuite dans l'installation de régulation de niveau, pour transférer du gaz sec depuis le réservoir de gaz haute pression (37) jusque dans le réservoir de gaz comprimé (6).
PCT/EP2009/050330 2008-02-28 2009-01-14 Procédé pour la compensation d'une perte par fuite dans une installation de régulation de niveau WO2009106376A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008011543.6 2008-02-28
DE200810011543 DE102008011543B4 (de) 2008-02-28 2008-02-28 Verfahren zum Ausgleich eines Leckageverlustes in einer Niveauregelanlage

Publications (1)

Publication Number Publication Date
WO2009106376A1 true WO2009106376A1 (fr) 2009-09-03

Family

ID=40494926

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Application Number Title Priority Date Filing Date
PCT/EP2009/050330 WO2009106376A1 (fr) 2008-02-28 2009-01-14 Procédé pour la compensation d'une perte par fuite dans une installation de régulation de niveau

Country Status (2)

Country Link
DE (1) DE102008011543B4 (fr)
WO (1) WO2009106376A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010054705A1 (de) 2010-12-16 2012-06-21 Wabco Gmbh Luftfederanlage, Druckluftversorgungsanlage und pneumatisches System
JP6701718B2 (ja) * 2015-12-22 2020-05-27 アイシン精機株式会社 エアサスペンション装置
DE102016200959A1 (de) 2016-01-25 2017-07-27 Bayerische Motoren Werke Aktiengesellschaft Verkleidungselement mit integriertem Druckgasspeicher
DE102017204155A1 (de) 2017-03-14 2018-09-20 Continental Teves Ag & Co. Ohg Verfahren zur Luftaufbereitung einer Druckluftanlage

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1333394A (fr) * 1961-09-09 1963-07-26 Bosch Gmbh Robert Installation de suspension pneumatique
JPH01218911A (ja) * 1988-02-29 1989-09-01 Kayaba Ind Co Ltd エアサスペンション制御装置
EP0603257B1 (fr) * 1991-09-13 1996-02-21 Dunlop Limited Systeme de suspension a gaz pour vehicules
FR2771680A1 (fr) * 1997-11-28 1999-06-04 Renault Suspension pneumatique de vehicule automobile
DE19959556C1 (de) * 1999-12-10 2000-12-14 Continental Ag Geschlossene Niveauregeleinrichtung für Fahrzeuge
US6668960B1 (en) * 2002-09-06 2003-12-30 Timothy Eugene Parker Airbag suspension system for motorcycles

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB941059A (en) * 1961-09-09 1963-11-06 Bosch Gmbh Robert Improvements in and relating to suspension systems
DE10055108A1 (de) * 2000-11-07 2002-05-08 Daimler Chrysler Ag Luftfederung mit geschlossenem Druckluftsystem

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1333394A (fr) * 1961-09-09 1963-07-26 Bosch Gmbh Robert Installation de suspension pneumatique
JPH01218911A (ja) * 1988-02-29 1989-09-01 Kayaba Ind Co Ltd エアサスペンション制御装置
EP0603257B1 (fr) * 1991-09-13 1996-02-21 Dunlop Limited Systeme de suspension a gaz pour vehicules
FR2771680A1 (fr) * 1997-11-28 1999-06-04 Renault Suspension pneumatique de vehicule automobile
DE19959556C1 (de) * 1999-12-10 2000-12-14 Continental Ag Geschlossene Niveauregeleinrichtung für Fahrzeuge
US6668960B1 (en) * 2002-09-06 2003-12-30 Timothy Eugene Parker Airbag suspension system for motorcycles

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DE102008011543A1 (de) 2009-09-03
DE102008011543B4 (de) 2014-07-24

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