WO2000030880A1 - Device for suspending motor vehicles - Google Patents

Device for suspending motor vehicles Download PDF

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Publication number
WO2000030880A1
WO2000030880A1 PCT/EP1999/008840 EP9908840W WO0030880A1 WO 2000030880 A1 WO2000030880 A1 WO 2000030880A1 EP 9908840 W EP9908840 W EP 9908840W WO 0030880 A1 WO0030880 A1 WO 0030880A1
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WIPO (PCT)
Prior art keywords
piston
motor vehicles
suspension
spring cylinder
piston ring
Prior art date
Application number
PCT/EP1999/008840
Other languages
German (de)
French (fr)
Inventor
Frank-Detlef Speck
Ünal GAZYAKAN
Original Assignee
Zf Lenksysteme Gmbh
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Publication of WO2000030880A1 publication Critical patent/WO2000030880A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
    • B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
    • B60G21/06—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected fluid
    • B60G21/073—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected fluid between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
    • 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
    • B60G2202/154—Fluid spring with an accumulator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/62—Adjustable continuously, e.g. during driving
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/80—Interactive suspensions; arrangement affecting more than one suspension unit
    • B60G2204/82—Interactive suspensions; arrangement affecting more than one suspension unit left and right unit on same axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/80—Interactive suspensions; arrangement affecting more than one suspension unit
    • B60G2204/83—Type of interconnection
    • B60G2204/8304—Type of interconnection using a fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/10—Damping action or damper
    • B60G2500/11—Damping valves
    • 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
    • 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
    • B60G2500/32—Height or ground clearance of only one vehicle part or side
    • 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
    • B60G2600/21—Self-controlled or adjusted
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
    • B60G2800/01—Attitude or posture control
    • B60G2800/012—Rolling condition
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
    • B60G2800/16—Running
    • B60G2800/164—Heaving; Squatting

Definitions

  • the invention relates to a device for suspension of motor vehicles according to the kind defined in the preamble of claim 1.
  • Hydropneumatic suspensions are often used to suspend a body structure of motor vehicles. These usually include a separate piston-cylinder unit per wheel, which, depending on the direction and intensity of the incline, relieves the more heavily loaded side of the motor vehicle either by lifting the inside of the curve or by lowering the outside of the curve. It is also known from the prior art to couple two piston-cylinder units of one axis by means of a cross-connection in order to produce a hydropneu atic stabilizer in this way. In these systems, both chambers of the cylinder have the same piston surfaces, so that the hydropneumatic stabilizer acts as a pure rolling spring and thus has no part in the lifting suspension of the motor vehicle.
  • DE 40 04 204 AI describes a hydropneumatic suspension system with tilt compensation, in which greater cross-stiffness of a motor vehicle can be achieved by cross-connecting two cylinders of the same area.
  • This hydropneumatic suspension system is based on the principle that the uneven load on the sides of the vehicle that arises when driving through a curve can be compensated for by specifically influencing the supporting force of the piston-cylinder units.
  • a disadvantage of the prior art, as described in DE 40 04 204 AI, is above all the fact that, in addition to the lifting suspension of the motor vehicle, a further suspension system is required to support the body structure.
  • the present invention has for its object to provide a device for the suspension of motor vehicles, in which additional springs and stabilizers can be dispensed with.
  • the hydro-pneumatic device for the suspension of motor vehicles can at the same time provide the full required lift and roll stiffness through a targeted coordination of piston and piston ring surfaces.
  • the hydropneumatic device for suspension of motor vehicles takes over the complete suspension of the motor vehicle, so that additional springs or stabilizers can be dispensed with, which offers advantages in terms of cost, weight and installation space.
  • FIG. 1 shows various embodiments of a device according to the invention for the suspension of motor vehicles.
  • FIG. 1 shows, as a first advantageous embodiment of the invention, a passive hydropneumatic suspension with a rigid axle 1 and vehicle wheels 2 and 3 attached to it.
  • a rigid axle 1 is connected to a body structure 4 by means of axle-side joints 5, 6 and body-side joints 7, 8 via two spring cylinders 9 and 10.
  • the spring cylinder 9 is articulated on the rigid axle 1 with a piston rod 11 in the joint 5.
  • a piston rod 12 of the spring cylinder 10 engages in the joint 6 of the rigid axle 1.
  • Each of the spring cylinders 9 and 10 has an upper spring cylinder space 13 and 15 and a lower spring cylinder space 14 and 16.
  • the spring cylinder spaces 13 and 14 are separated from each other by a separating piston 17, the spring cylinder spaces 15 and 16 by a separating piston 18.
  • a line 19 connects the upper spring cylinder space 13 of the spring cylinder 9 with the lower spring cylinder space 16 of the spring cylinder 10. In the same way, one connects
  • Line 20 the upper spring cylinder space 15 of the spring cylinder 10 with the lower spring cylinder space 14 of the spring cylinder linders 9.
  • the lines 19 and 20 interconnect the double chamber cylinders with each other.
  • a memory 23 and 24 is connected to each of the lines 19 and 20 via lines 21 and 22. Damping elements 25 and 26 are attached in the lines 21 and 22, which additionally weaken roll movements.
  • damping elements 27 and 28 are integrated in the cross-connected lines 19 and 20.
  • FIG. 3 shows a combination of the arrangement of the damping elements shown in FIGS. 1 and 2.
  • the overall rigidity of the device for suspension and of motor vehicles is composed of the stroke and roll rigidity of the rigid axle 1.
  • n is the polytropic exponent
  • AK is a piston surface 29
  • AR is a piston ring surface 30
  • p is the pressure in the accumulator 23
  • V is the gas volume of the accumulator 23
  • s is the track width of the rigid axle 1.
  • the required roll and stroke rigidity of the entire device for the suspension of motor vehicles can be achieved in that the dimensioning of piston surfaces 29, 31 and piston ring surface 30, 32 in the ratio

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

The invention relates to a device for suspending motor vehicles, in which by adjustment of the ratio of piston area (29, 31) to piston ring area (30, 32) of the suspension cylinders (9, 10) both the required roll resistance and lift resistance can be obtained without additional springs.

Description

Vorrichtung zur Federung von Kraftfahrzeugen Suspension device for motor vehicles
Die Erfindung betrifft eine Vorrichtung zur Federung von Kraftfahrzeugen nach der im Oberbegriff von Anspruch 1 näher definierten Art .The invention relates to a device for suspension of motor vehicles according to the kind defined in the preamble of claim 1.
Hydropneumatische Federungen werden häufig zur Federung eines Karosserieaufbaus von Kraftfahrzeugen verwendet. Diese beinhalten meist eine separate Kolben-Zylindereinheit pro Rad, die je nach Neigungsrichtung und -intensität die stärker belastete Seite des Kraftfahrzeugs entweder durch Anheben der kurveninneren oder durch Absenken der kurvenäußeren Seite entlasten. Aus dem Stand der Technik ist wei- terhin bekannt zwei Kolben-Zylindereinheiten einer Achse durch eine Kreuzverschaltung zu koppeln, um auf diese Weise einen hydropneu atischen Stabilisator zu erzeugen. Bei diesen Systemen weisen beide Kammern des Zylinders gleiche Kolbenflächen auf, sodaß der hydropneumatische Stabilisator als eine reine Wankfeder wirkt und somit keinen Anteil an der Hubfederung des Kraftfahrzeuges hat.Hydropneumatic suspensions are often used to suspend a body structure of motor vehicles. These usually include a separate piston-cylinder unit per wheel, which, depending on the direction and intensity of the incline, relieves the more heavily loaded side of the motor vehicle either by lifting the inside of the curve or by lowering the outside of the curve. It is also known from the prior art to couple two piston-cylinder units of one axis by means of a cross-connection in order to produce a hydropneu atic stabilizer in this way. In these systems, both chambers of the cylinder have the same piston surfaces, so that the hydropneumatic stabilizer acts as a pure rolling spring and thus has no part in the lifting suspension of the motor vehicle.
In der DE 40 04 204 AI ist ein hydropneumatisches Federungssystem mit Kippausgleich beschrieben, bei dem durch Kreuzverschaltung von zwei flächenungleichen Zylindern eine größere Wanksteifigkeit eines Kraftfahrzeuges erreicht werden kann. Dieses hydropneumatische Federungssystem beruht auf dem Prinzip, daß die beim Durchfahren einer Kurve entstehende ungleiche Belastung der Fahrzeugseiten durch eine gezielte Beeinflussung der Stützkraft der Kolben- Zylindereinheiten ausgeglichen werden kann. Nachteilig wirkt sich bei dem Stand der Technik, wie er in der DE 40 04 204 AI beschrieben ist, vor allem die Tatsache aus, daß zusätzlich zur Hubfederung des Kraftfahrzeuges noch eine weiteres Federungssystem zur Abstützung des Karosserieaufbaus benötigt wird.DE 40 04 204 AI describes a hydropneumatic suspension system with tilt compensation, in which greater cross-stiffness of a motor vehicle can be achieved by cross-connecting two cylinders of the same area. This hydropneumatic suspension system is based on the principle that the uneven load on the sides of the vehicle that arises when driving through a curve can be compensated for by specifically influencing the supporting force of the piston-cylinder units. A disadvantage of the prior art, as described in DE 40 04 204 AI, is above all the fact that, in addition to the lifting suspension of the motor vehicle, a further suspension system is required to support the body structure.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde eine Vorrichtung zur Federung von Kraftfahrzeugen darzustellen, bei dem auf zusätzliche Federn und Stabilisatoren verzichtet werden kann.The present invention has for its object to provide a device for the suspension of motor vehicles, in which additional springs and stabilizers can be dispensed with.
Die der Erfindung zugrundeliegende Aufgabe wird durch eine, auch die kennzeichnenden Merkmale des Hauptanspruchs aufweisende, gattungsgemäße Vorrichtung zur Federung von Kraftfahrzeugen gelöst.The object on which the invention is based is achieved by a generic device for the suspension of motor vehicles, which also has the characterizing features of the main claim.
Durch eine gezielte Abstimmung von Kolben- und Kolbenringflächen kann die hydropneumatische Vorrichtung zur Federung von Kraftfahrzeugen gleichzeitig die volle erforder- liehe Hub- und Wanksteifigkeit erbringen. Die hydropneumatische Vorrichtung zur Federung von Kraftfahrzeugen übernimmt die vollständige Federung des Kraftfahrzeuges, sodaß auf zusätzliche Federn oder Stabilisatoren verzichtet werden kann, was Vorteile hinsichtlich Kosten, Gewicht und Einbauraum bietet.The hydro-pneumatic device for the suspension of motor vehicles can at the same time provide the full required lift and roll stiffness through a targeted coordination of piston and piston ring surfaces. The hydropneumatic device for suspension of motor vehicles takes over the complete suspension of the motor vehicle, so that additional springs or stabilizers can be dispensed with, which offers advantages in terms of cost, weight and installation space.
Vorteilhafte und zweckmäßige Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben. Die Erfindung ist aber nicht auf die Merkmalskombinationen der An- sprüche beschränkt, vielmehr ergeben sich für den Fachmann weitere sinnvolle Kombinationsmöglichkeiten von Ansprüchen und einzelnen Anspruchsmerkmalen aus der Aufgabenstellung. Nachfolgend sind anhand der Zeichnungen verschiedene Ausführungsbeispiele der vorliegenden Erfindung prinzipgemäß beschrieben. Es zeigen:Advantageous and expedient embodiments of the invention are specified in the subclaims. However, the invention is not limited to the combinations of features of the claims; rather, more practical combinations of claims and individual claim features result from the task for the person skilled in the art. Various exemplary embodiments of the present invention are described in principle below with reference to the drawings. Show it:
Fig. 1 verschiedene Ausführungsformen einer er- bis 3 findungsgemäßen Vorrichtung zur Federung von Kraftfahrzeugen.1 shows various embodiments of a device according to the invention for the suspension of motor vehicles.
In der Fig. 1 ist als eine erste vorteilhafte Ausführungsform der Erfindung eine passive hydropneumatische Federung mit einer Starrchse 1 und daran befestigten Fahrzeugrädern 2 und 3 dargestellt. Anstelle der Fahrzeugräder 2 und 3 kann auch eine Zwillingsbereifung und anstelle der Starrachse 1 jede weitere Radaufhängung vorgesehen werden. Die Verbindung der Starrachse 1 mit einem Karosserieaufbau 4 erfolgt mittels achsseitiger Gelenke 5, 6 und auf- bauseitiger Gelenke 7, 8 über zwei Federzylinder 9 und 10. Der Federzylinder 9 ist mit einer Kolbenstange 11 in dem Gelenk 5 an der Starrachse 1 angelenkt. Analog hierzu greift eine Kolbenstange 12 des Federzylinders 10 in dem Gelenk 6 der Starrachse 1 an.1 shows, as a first advantageous embodiment of the invention, a passive hydropneumatic suspension with a rigid axle 1 and vehicle wheels 2 and 3 attached to it. Instead of the vehicle wheels 2 and 3, twin tires and, instead of the rigid axle 1, any further wheel suspension can be provided. The rigid axle 1 is connected to a body structure 4 by means of axle-side joints 5, 6 and body-side joints 7, 8 via two spring cylinders 9 and 10. The spring cylinder 9 is articulated on the rigid axle 1 with a piston rod 11 in the joint 5. Analogously to this, a piston rod 12 of the spring cylinder 10 engages in the joint 6 of the rigid axle 1.
Jeder der Federzylinder 9 und 10 weist jeweils einen oberen Federzylinderraum 13 und 15 sowie einen unteren Federzylin- derraum 14 und 16 auf. Die Federzylinderräume 13 und 14 sind durch einen Trennkolben 17, die Federzylinderräume 15 und 16 durch einen Trennkolben 18 voneinander getrennt. Eine Leitung 19 verbindet den oberen Federzylinderraum 13 des Federzylinders 9 mit dem unteren Federzylinderraum 16 des Federzylinders 10. In gleicher Weise verbindet eineEach of the spring cylinders 9 and 10 has an upper spring cylinder space 13 and 15 and a lower spring cylinder space 14 and 16. The spring cylinder spaces 13 and 14 are separated from each other by a separating piston 17, the spring cylinder spaces 15 and 16 by a separating piston 18. A line 19 connects the upper spring cylinder space 13 of the spring cylinder 9 with the lower spring cylinder space 16 of the spring cylinder 10. In the same way, one connects
Leitung 20 den oberen Federzylinderraum 15 des Federzylinders 10 mit dem unteren Federzylinderraum 14 des Federzy- linders 9. Durch die Leitungen 19 und 20 sind die Doppelkammerzylinder über Kreuz miteinander verschaltet.Line 20 the upper spring cylinder space 15 of the spring cylinder 10 with the lower spring cylinder space 14 of the spring cylinder linders 9. The lines 19 and 20 interconnect the double chamber cylinders with each other.
An jede der Leitungen 19 und 20 ist über Leitungen 21 und 22 ein Speicher 23 und 24 angeschlossen. In den Leitungen 21 und 22 sind Dämpfungselemente 25 und 26 angebracht, die zusätzlich Wankbewegungen abschwächen.A memory 23 and 24 is connected to each of the lines 19 and 20 via lines 21 and 22. Damping elements 25 and 26 are attached in the lines 21 and 22, which additionally weaken roll movements.
In der in Fig. 2 dargestellten Vorrichtung zur Fede- rung von Kraftfahrzeugen sind Dämpfungselemente 27 und 28 in den über Kreuz verschalteten Leitungen 19 und 20 integriert .In the device for the suspension of motor vehicles shown in FIG. 2, damping elements 27 and 28 are integrated in the cross-connected lines 19 and 20.
Die in Fig. 3 dargestellte Ausführungsform der Erfin- düng zeigt eine Kombination der Anordnung der in Fig. 1 und Fig. 2 dargestellten Dämpfungselemente.The embodiment of the invention shown in FIG. 3 shows a combination of the arrangement of the damping elements shown in FIGS. 1 and 2.
Die Gesamtsteifigkeit der Vorrichtung zur Federung und von Kraftfahrzeugen setzt sich aus der Hub- und der Wank- steifigkeit der Starrachse 1 zusammen.The overall rigidity of the device for suspension and of motor vehicles is composed of the stroke and roll rigidity of the rigid axle 1.
Für die Hubsteifigkeit fo. der Starrachse 1 gilt die BeziehungFor the lifting stiffness fo. the relationship applies to the rigid axis 1
Figure imgf000006_0001
Figure imgf000006_0001
und die Wanksteifigkeit kw der Starrachse 1 berechnet sich nach der Gleichungand the roll stiffness kw of the rigid axle 1 is calculated according to the equation
Figure imgf000006_0002
Hierbei ist n der Polytropenexponent, AK eine Kolbenfläche 29, AR eine Kolbenringfläche 30, p der Druck im Speicher 23, V das Gasvolumen des Speichers 23 und s die Spurweite der Starrchse 1.
Figure imgf000006_0002
Here n is the polytropic exponent, AK is a piston surface 29, AR is a piston ring surface 30, p is the pressure in the accumulator 23, V is the gas volume of the accumulator 23 and s is the track width of the rigid axle 1.
Die erforderliche Wank- und Hubsteifigkeit der gesamten Vorrichtung zur Federung von Kraftfahrzeugen kann dadurch erreicht werden, daß die Dimensionierung von Kolbenflächen 29, 31 und Kolbenringfläche 30, 32 im VerhältnisThe required roll and stroke rigidity of the entire device for the suspension of motor vehicles can be achieved in that the dimensioning of piston surfaces 29, 31 and piston ring surface 30, 32 in the ratio
Figure imgf000007_0001
Figure imgf000007_0001
erfolgt . he follows .
Bezugszeichenreference numeral
1 Starrachse 30 Kolbenringfläche1 rigid axle 30 piston ring surface
2 Fahrzeugrad 31 Kolbenring2 Vehicle wheel 31 piston ring
3 Fahrzeugrad 32 Kolbenringfläche3 Vehicle wheel 32 piston ring surface
4 Karosserieaufbau4 body construction
5 Gelenk5 joint
6 Gelenk6 joint
7 Gelenk7 joint
8 Gelenk8 joint
9 Federzylinder9 spring cylinders
10 Federzylinder10 spring cylinders
11 Kolbenstange11 piston rod
12 Kolbenstange12 piston rod
13 Oberer Federzylinderraum13 Upper spring cylinder space
14 Unterer Federzylinderraum14 Lower spring cylinder space
15 Oberer Federzylinderraum15 Upper spring cylinder space
16 Unterer Federzylinderraum16 Lower spring cylinder space
17 Trennkolben17 separating pistons
18 Trennkolben18 separating pistons
19 Leitung19 management
20 Leitung20 line
21 Leitung21 line
22 Leitung22 line
23 Speicher23 memory
24 Speicher24 memories
25 Dämpfungselernent25 damping element
26 Dämpfungselement26 damping element
27 Dämpfungselement27 damping element
28 Dämpfungselement28 damping element
29 Kolbenfläche 29 piston surface

Claims

P a t e n t a n s r ü c h e Patent claims
1. Vorrichtung zur Federung von Kraftfahrzeugen, bei der jedes Fahrzeugrad (2, 3) über ein druckmittelbeaufschlagtes1. Device for the suspension of motor vehicles, in which each vehicle wheel (2, 3) via a pressurized medium
Federungssystem mit einem Karosserieaufbau (4) verbunden ist, welches Federzylinder (9, 10) aufweist, die durch Leitungen (19, 20), an die jeweils ein Speicher (23, 24) mit einem Dämpfungselement (25, 26) angeschlossen ist, über Kreuz mit— einander verbunden sind, dadurch g e k e n n z e i c h n e t , daß Kolbenflächen (29, 31) und Kolbenringflächen (30, 32) der Federzylinder (9, 10) gemäß der FormelSuspension system is connected to a body structure (4) which has spring cylinders (9, 10) which are connected by lines (19, 20) to which a memory (23, 24) with a damping element (25, 26) is connected Cross-connected to each other, characterized in that piston surfaces (29, 31) and piston ring surfaces (30, 32) of the spring cylinder (9, 10) according to the formula
Figure imgf000009_0001
Figure imgf000009_0001
dimensioniert sind, wobei AK die Kolbenfläche (29, 31) , AR die Kolbenringfläche (30, 32) , kw die erforderliche Wank- steifigkeit, ki. die erforderliche Hubsteifigkeit und s die Spurweite der Starrachse (1) ist.are dimensioned, with AK the piston surface (29, 31), AR the piston ring surface (30, 32), kw the required roll stiffness, ki. the required stroke rigidity and s is the track width of the rigid axle (1).
2. Vorrichtung nach Anspruch 1, dadurch g e k e n n z e i c h n e t , daß Dämpfungselemente (27, 28) in den Leitungen (19, 20) angeordnet sind, die die Federzylinder (9, 10) über Kreuz miteinander verbinden. 2. Device according to claim 1, characterized in that damping elements (27, 28) are arranged in the lines (19, 20) which connect the spring cylinders (9, 10) to one another in a cross pattern.
PCT/EP1999/008840 1998-11-23 1999-11-17 Device for suspending motor vehicles WO2000030880A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998153875 DE19853875A1 (en) 1998-11-23 1998-11-23 Suspension for motor vehicles combines with targeted balancing of piston surfaces and piston ring surfaces to achieve full required rolling motion stiffness and traveling stiffness
DE19853875.8 1998-11-23

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Publication number Priority date Publication date Assignee Title
WO2013069469A1 (en) * 2011-11-09 2013-05-16 アイシン精機株式会社 Suspension device for vehicle
FR2985687B1 (en) * 2012-01-16 2014-02-07 Peugeot Citroen Automobiles Sa ANTI-DEVICE SYSTEM FOR A MOTOR VEHICLE HAVING SHOCK ABSORBERS
FR2988332A1 (en) * 2012-03-22 2013-09-27 Peugeot Citroen Automobiles Sa Sway system for running gear of car, has hydraulic system comprising compression chamber closed by piston that comprises compression spring whose initial load is adjustable, to maintain pressure permanent in compression chamber

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DE1947232A1 (en) * 1969-09-18 1971-04-01 Roessner Hans Dipl Ing Hydropneumatic shock absorber with stabilizer effect
DE2048323A1 (en) * 1970-10-01 1972-04-06 Daimler Benz Ag, 7000 Stuttgart Device for stabilizing the vehicle superstructure against inclination in curves
FR2252228A1 (en) * 1973-11-28 1975-06-20 Automotive Prod Co Ltd
FR2503641A1 (en) * 1981-04-10 1982-10-15 Peugeot Hydraulic shock absorber for vehicle suspension - has two piston and cylinder units with chambers in cylinders interconnected by piping system
DE3512232A1 (en) * 1985-02-07 1986-08-14 Liebherr-Werk Ehingen Gmbh, 7930 Ehingen Hydropneumatic axle suspension for vehicles, preferably for motorised and mobile cranes
DE4004204A1 (en) 1990-02-12 1991-08-14 Hemscheidt Maschf Hermann Hydropneumatic suspension system for vehicle - incorporates two piston-cylinder units connected to reservoir
DE4115717A1 (en) * 1990-05-14 1991-11-21 Nissan Motor HYDRAULIC DAMPING DEVICE FOR VEHICLES
EP0536707A1 (en) * 1991-10-11 1993-04-14 ZF FRIEDRICHSHAFEN Aktiengesellschaft Method for stabilising the body of motor vehicles

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