DE10227888A1 - Pneumatic spring for motor vehicles has active linear oscillation damper with moving coil and damper mass with permanent magnet for increased traveling comfort - Google Patents

Pneumatic spring for motor vehicles has active linear oscillation damper with moving coil and damper mass with permanent magnet for increased traveling comfort Download PDF

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Publication number
DE10227888A1
DE10227888A1 DE2002127888 DE10227888A DE10227888A1 DE 10227888 A1 DE10227888 A1 DE 10227888A1 DE 2002127888 DE2002127888 DE 2002127888 DE 10227888 A DE10227888 A DE 10227888A DE 10227888 A1 DE10227888 A1 DE 10227888A1
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DE
Germany
Prior art keywords
damper
rolling piston
moving coil
permanent magnet
air spring
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Withdrawn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
DE2002127888
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German (de)
Inventor
Hubertus Dipl.-Ing. Prinzler
Eckhard Dr. Schneider
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.)
Carl Freudenberg KG
Original Assignee
Carl Freudenberg KG
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 Carl Freudenberg KG filed Critical Carl Freudenberg KG
Priority to DE2002127888 priority Critical patent/DE10227888A1/en
Publication of DE10227888A1 publication Critical patent/DE10227888A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
    • F16F9/04—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall
    • F16F9/05—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall the flexible wall being of the rolling diaphragm type
    • F16F9/057—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall the flexible wall being of the rolling diaphragm type characterised by the piston
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
    • B60G11/27—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs wherein the fluid is a gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G13/00—Resilient suspensions characterised by arrangement, location or type of vibration dampers
    • B60G13/16—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dynamic absorbers as main damping means, i.e. spring-mass system vibrating out of phase
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
    • F16F7/1005—Vibration-dampers; Shock-absorbers using inertia effect characterised by active control of the mass
    • F16F7/1011—Vibration-dampers; Shock-absorbers using inertia effect characterised by active control of the mass by electromagnetic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/15—Fluid spring
    • B60G2202/152—Pneumatic spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/20—Type of damper
    • B60G2202/25—Dynamic damper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/40—Type of actuator
    • B60G2202/42—Electric actuator
    • 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
    • B60G2206/40—Constructional features of dampers and/or springs
    • B60G2206/42—Springs
    • B60G2206/424—Plunger or top retainer construction for bellows or rolling lobe type air springs

Abstract

The spring supports a motor vehicle body esp. on an axle. It has an oscillation damper (4) formed as an active linear damper, and located in a piston (3). The damper has a moving coil (7) and a damper mass (8) with permanent magnet. The coil is fastened to the piston housing (9), and the damper mass oscillates relative to the piston. The damper mass is in connection with piston via a spring connection (10). The internal chamber (11) of the piston is formed as a pneumatic spring.

Description

Technisches Gebiettechnical area

Die Erfindung befasst sich mit einer pneumatischen Luftfeder mit Schwingungstilger zur Abstützung eines Fahrzeugkörpers auf einem anderen, schwingenden Fahrzeugbauteil, insbesondere einer Achse mit einem druckluftbeaufschlagbaren Rollbalg aus elastomerem Werkstoff, der einerseits an den Fahrzeugkörper und andererseits über einen Abrollkolben an dem schwingenden Fahrzeugbauteil befestigt ist, wobei der Abrollkolben in seinem Inneren den Schwingungstilger hat.The invention is concerned with a pneumatic air spring with vibration damper to support a vehicle body on another, vibrating vehicle component, in particular an axle with a pressurized air bag made of elastomer material, the one hand on the vehicle body and on the other hand about attached a rolling piston to the vibrating vehicle component is, the rolling piston inside the vibration damper Has.

Luftfedern sind in einer Vielzahl von Ausführungsformen bekannt und werden bei Fahrzeugfederungen zur Abfederung von Fahrzeugaufbauten gegenüber Radachsen in großem Umfang eingesetzt. Die Luftfedern sind mit ihren Enden mit je einem Anschlussteil dicht angeordnet, wobei die Anschlussteile gewöhnlich aus Metall gefertigt sind. Die Luftfedern sind damit einerseits am Fahrzeugrahmen und andererseits auf der Fahrzeugachse befestigt.Air springs are in a variety of embodiments are known and are used in vehicle suspensions for cushioning vehicle bodies across from Large axles Scope used. The ends of the air springs are one each Connection part arranged tightly, the connection parts usually made of Are made of metal. The air springs are on the one hand on the vehicle frame and on the other hand attached to the vehicle axle.

Stand der Technik:State of the art:

In der Praxis zeigte sich, dass bei luftgefederten Fahrzeugen Schwingungen an der Achse auftreten, die in der Eigenfrequenz der Achse liegen können. Diese Schwingungen können beispielsweise durch Fahrbahnunebenheiten eingeleitet werden. Die in der Eigenfrequenz der Achse liegenden Schwingungen haben negative Auswirkungen auf den Fahrkomfort und die Fahrsicherheit des Fahrzeugs.Practice has shown that air suspension vehicles vibrations occur on the axle, the can lie in the natural frequency of the axis. These vibrations can be caused, for example, by Bumps can be initiated. The one in the natural frequency Vibrations lying on the axis have negative effects on the Driving comfort and driving safety of the vehicle.

Um diesen Umstand abzuhelfen wurde durch die DE 43 27 883 C2 eine Luftfeder bekannt, bei der das am Fahrzeugbauteil angebrachte Anschlussteil eine elastisch angebundene Schwingungstilgermasse aufweist. Die Tilgermasse wird durch ein in Steifigkeit und Dämpfung auf die jeweilige Eigenfrequenz des Fahrzeugbauteils speziell abgestimmtes elastomeres Federelement gegenüber dem Luftfederanschlussteil gelagert. Durch die Tilgermasse werden gezielt die störenden Schwingungen dieses Bauteils in der Resonanz reduziert. Nicht erfasst werden von dem Schwingungstilger Schwingungen, die außerhalb des eingestellten Bereichs liegen.In order to remedy this, the DE 43 27 883 C2 an air spring is known, in which the connection part attached to the vehicle component has an elastically connected vibration damper mass. The absorber mass is supported by an elastomer spring element that is specially matched to the air spring connection part in terms of rigidity and damping to the natural frequency of the vehicle component. The damper vibrations of this component are specifically reduced in the resonance by the absorber mass. The vibration damper does not record vibrations that are outside the set range.

Darstellung der Erfindungpresentation the invention

Der Erfindung liegt die Aufgabe zugrunde eine Luftfeder mit Schwingungstilger zu schaffen, der verschiedene Resonanzfrequenzen des Fahrzeugteils dämpfen kann.The invention is based on the object Air spring with vibration damper to create different resonance frequencies dampen the vehicle part can.

Die Lösung der gestellten Aufgabe erfolgt bei einer Luftfeder mit Schwingungstilger der eingangs genannten Art erfindungsgemäß dadurch, dass der Schwingungstilger als aktiver linearer Tilger ausgebildet ist. Durch die Anwendung des aktiven linearen Tilgers wird eine beträchtliche Komfortsteigerung durch Reduzierung der Schwingungsamplituden erreicht. Während die bekannte Luftfeder lediglich die Hubeigenschwingungen der Achse dämpfen konnte, die bei ca. 10 Hz liegen, kann der aktive Tilger auch die Trampeleigenfrequenzen von Starrachsen reduzieren, die im Bereich von 15 bis 20 Hz liegen und darüberhinaus auch Schwingungen, die aus dem Reifen/Fahrbahnkontakten herrühren und die im Bereich zwischen 10 und 100 Hz liegen. Durch den aktiven Lineartilger wird folglich ein weiter Frequenzbereich erfasst. Darüber hinaus kann dieser Tilger kleiner als ein passiver Tilger ausgebildet werden. Er ist kompakter und effektiver.The solution to the task takes place in an air spring with vibration damper of the aforementioned Kind according to the invention by that the vibration damper is designed as an active linear absorber is. By using the active linear absorber, a considerable Increased comfort achieved by reducing the vibration amplitudes. While the known air spring only the natural vibrations of the axis dampen that are around 10 Hz, the active absorber can also Trample natural frequencies of rigid axles reduce that in the area from 15 to 20 Hz and beyond also vibrations resulting from tire / road contact and which are in the range between 10 and 100 Hz. Through the active A broad frequency range is consequently recorded in Lineartilger. Furthermore this damper can be made smaller than a passive damper. It is more compact and effective.

Bevorzugt wird der aktive Schwingungstilger durch eine Tauchspule und eine Tilgermasse mit einem Permanentmagneten gebildet, wobei die Tauchspule am Gehäuse des Abrollkolbens angebracht ist und die Tilgermasse relativ zum Abrollkolben schwingt. Die Tilgermasse wird dabei über eine Federverbindung, die beispielsweise eine sogenannte Gummispur sein kann mit dem Abrollkolben verbunden. Die Schwingungstilger in dieser Bauart sind an sich bekannt, neu ist jedoch ihre Unterbringung bei Luftfedern, wie sie hier mit der Anmeldung vorgeschlagen werden.The active vibration damper is preferred by a moving coil and an absorber mass with a permanent magnet formed, the plunger attached to the housing of the rolling piston is and the absorber mass swings relative to the rolling piston. The absorber mass is about a spring connection, for example a so-called rubber track can be connected to the rolling piston. The vibration absorber in this design are known per se, but their accommodation is new Air springs, as proposed here with the registration.

Grundsätzlich wird der aktive Tilger achsseitig angebracht und auf die Starrkörpereigenfrequenzen der Achse abgestimmt. Durch die mögliche Durchstimmbarkeit des Tilgers können jedoch auch alle weiteren eingeleiteten Schwingungen getilgt werden.Basically, the active absorber attached to the axle and to the rigid body natural frequencies of the axle Voted. Due to the possible tunability of the absorber can however, all other vibrations introduced are also eradicated.

Von Vorteil ist auch die Anordnung des Schwingungstilgers im Inneren des Abrollkolbens. Der Abrollkolben übernimmt dabei zusätzlich eine Schutzfunktion gegenüber dem Tilger. Darüber hinaus ist es günstig, wenn der innere Rahmen des Abrollkolbens als Luftfeder ausgebildet ist.The arrangement is also advantageous of the vibration damper inside the rolling piston. The rolling piston takes over thereby additionally a protective function against the absorber. About that it is also favorable if the inner frame of the rolling piston is designed as an air spring is.

Ausführung der ErfindungExecution of the invention

Anhand eines in der beiliegenden Figur dargestellten Ausführungsbeispiels wird die Erfindung nachstehend näher erläutert. Die Figur zeigt die Ausbildung der Luftfeder 1 im Schnitt. Die Luftfeder 1 besteht im Wesentlichen aus dem Rollbalg 2 und dem Abrollkolben 3 sowie dem innerhalb des Abrollkolbens 3 angebrachten aktiven Lineartilger 4. Der Rollbalg 2 wird über einen geeigneten Flansch 5 am nicht näher gezeigten Fahrzeug befestigt. Der Abrollkolben 3 wird über den Ansatz 6 mit der Fahrzeugachse verbunden. Der Schwingungstilger 4 kann unterschiedlicher Bauart sein. Im vorliegenden Beispiel wird jedoch ein Schwingungstilger 4 verwendet, der aus einer Tauchspule 7 und einer Tilgermasse 8 besteht, wobei die Tilgermasse 8 mit einem Permanentmagneten versehen ist. Die Tauchspule 7 ist am Gehäuse 9 des Abrollkolbens 3 angebracht. Die Tilgermasse 8 ist über die Federverbindung 10 mit dem Abrollkolben 3 verbunden und kann dadurch gegenüber dem Abrollkolben 3 schwingen. Die Schwingbewegung wird durch die Tauchspule 7 gesteuert. Hierfür ist die Tauchspule 7 mit einer nicht mehr gezeigten Stromquelle verbunden, die, je nach Bedarf, d.h. in Abhängigkeit von den aufgetretenen Schwingungen, mit unterschiedlicher Stromspannung versorgt wird.The invention is explained in more detail below on the basis of an exemplary embodiment shown in the attached figure. The figure shows the design of the air spring 1 on average. The air spring 1 consists essentially of the bellows 2 and the rolling piston 3 as well as within the rolling piston 3 attached active linear absorber 4 , The bellows 2 will have a suitable flange 5 attached to the vehicle, not shown. The rolling piston 3 is about the approach 6 connected to the vehicle axle. The vibration damper 4 can be of different types. In the present example, however, a vibration damper is used 4 used that from a moving coil 7 and an absorber mass 8th exists, the absorber mass 8th is provided with a permanent magnet. The moving coil 7 is on the housing 9 of the rolling piston 3 appropriate. The absorber mass 8th is via the spring connection 10 with the Ab rolling piston 3 connected and can thereby opposite the rolling piston 3 swing. The swinging motion is through the moving coil 7 controlled. The plunger is for this 7 connected to a power source which is no longer shown and which, depending on requirements, ie depending on the vibrations which have occurred, is supplied with a different voltage.

Der Innenraum 11 des Abrollkolbens 3 ist über Ventile mit dem Innenraum des Rollbalgs 2 verbunden. Über diese Druckventile 12 kann ein Luftvolumenausgleich zwischen dem Rollbalg 2 und Abrollkolben 3 stattfinden.The interior 11 of the rolling piston 3 is about valves with the interior of the bellows 2 connected. About these pressure valves 12 air volume compensation between the bellows 2 and rolling piston 3 occur.

Claims (4)

Luftfeder mit Schwingungstilger zur Abstützung eines Fahrzeugkörpers auf einem anderen schwingenden Fahrzeugbauteil, insbesondere einer Achse, mit einem druckluftbeaufschlagbaren Rollbalg aus elastomeren Werkstoff, der einerseits an dem Fahrzeugkörper und andererseits über einen Abrollkolben an dem schwingenden Fahrzeugbauteil befestigt ist, wobei der Abrollkolben in seinem Inneren den Schwingungstilger hat, dadurch gekennzeichnet, dass der Schwingungstilger (4) als aktiver linearer Tilger ausgebildet ist.Air spring with vibration damper for supporting a vehicle body on another vibrating vehicle component, in particular an axle, with a roll bellows made of elastomeric material which can be pressurized with air and which is fastened on the one hand to the vehicle body and on the other hand to the vibrating vehicle component via a rolling piston, the rolling piston inside the vibration absorber , characterized in that the vibration damper ( 4 ) is designed as an active linear absorber. Luftfeder nach Anspruch 1, dadurch gekennzeichnet, dass der Schwingungstilger (4) eine Tauchspule (7) und eine Tilgermasse (8) mit einem Permanentmagneten hat, wobei die Tauchspule (7) am Gehäuse (9) des Abrollkolbens (3) angebracht ist und die Tilgermasse (8) relativ zum Abrollkolben (3) schwingt.Air spring according to claim 1, characterized in that the vibration damper ( 4 ) a moving coil ( 7 ) and an absorber mass ( 8th ) with a permanent magnet, the moving coil ( 7 ) on the housing ( 9 ) of the rolling piston ( 3 ) is attached and the absorber mass ( 8th ) relative to the rolling piston ( 3 ) swings. Luftfeder nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Tilgermasse (8) über eine Federverbindung (10) mit dem Abrollkolben (3) verbunden ist.Air spring according to one of claims 1 or 2, characterized in that the absorber mass ( 8th ) via a spring connection ( 10 ) with the rolling piston ( 3 ) connected is. Luftfeder nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Innenraum (11) des Abrollkolbens (3) als Luftfeder ausgebildet ist.Air spring according to one of claims 1 to 3, characterized in that the interior ( 11 ) of the rolling piston ( 3 ) is designed as an air spring.
DE2002127888 2002-06-21 2002-06-21 Pneumatic spring for motor vehicles has active linear oscillation damper with moving coil and damper mass with permanent magnet for increased traveling comfort Withdrawn DE10227888A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2002127888 DE10227888A1 (en) 2002-06-21 2002-06-21 Pneumatic spring for motor vehicles has active linear oscillation damper with moving coil and damper mass with permanent magnet for increased traveling comfort

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2002127888 DE10227888A1 (en) 2002-06-21 2002-06-21 Pneumatic spring for motor vehicles has active linear oscillation damper with moving coil and damper mass with permanent magnet for increased traveling comfort

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DE10227888A1 true DE10227888A1 (en) 2004-01-15

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010004320A1 (en) 2010-01-12 2011-07-14 MAN Truck & Bus AG, 80995 Commercial vehicle with a steered axle as a vibration absorber
WO2013107823A1 (en) * 2012-01-20 2013-07-25 Jaguar Land Rover Limited Active road noise control system
US8517357B2 (en) 2009-06-19 2013-08-27 Firestone Industrial Products Company, Llc Gas spring and damper assembly

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8517357B2 (en) 2009-06-19 2013-08-27 Firestone Industrial Products Company, Llc Gas spring and damper assembly
DE102010004320A1 (en) 2010-01-12 2011-07-14 MAN Truck & Bus AG, 80995 Commercial vehicle with a steered axle as a vibration absorber
EP2351657A2 (en) 2010-01-12 2011-08-03 MAN Truck & Bus AG Commercial vehicle with an articulated axle as a vibration absorber
WO2013107823A1 (en) * 2012-01-20 2013-07-25 Jaguar Land Rover Limited Active road noise control system
GB2499978B (en) * 2012-01-20 2014-11-05 Jaguar Land Rover Ltd Active road noise control system
CN104245371A (en) * 2012-01-20 2014-12-24 捷豹路虎有限公司 Active road noise control system
US9278600B2 (en) 2012-01-20 2016-03-08 Jaguar Land Rover Limited Active road noise control system

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