DE10236621B4 - Air suspension system of a McPherson strut - Google Patents
Air suspension system of a McPherson strut Download PDFInfo
- Publication number
- DE10236621B4 DE10236621B4 DE2002136621 DE10236621A DE10236621B4 DE 10236621 B4 DE10236621 B4 DE 10236621B4 DE 2002136621 DE2002136621 DE 2002136621 DE 10236621 A DE10236621 A DE 10236621A DE 10236621 B4 DE10236621 B4 DE 10236621B4
- Authority
- DE
- Germany
- Prior art keywords
- air spring
- air
- spring system
- valve
- vibration damper
- 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.)
- Expired - Fee Related
Links
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
- B60G15/08—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having fluid spring
- B60G15/12—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having fluid spring and fluid damper
- B60G15/14—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having fluid spring and fluid damper the damper being connected to the stub axle and the spring being arranged around the damper
-
- 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
- B60G17/048—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics with the regulating means inside the fluid springs
- B60G17/0485—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics with the regulating means inside the fluid springs the springs being pneumatic springs with a flexible wall, e.g. with levelling valves
-
- 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
- B60G17/0521—Pneumatic spring characteristics the spring having a flexible wall
-
- 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
- F16F9/049—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 multi-chamber units
-
- 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
- B60G2202/30—Spring/Damper and/or actuator Units
- B60G2202/31—Spring/Damper and/or actuator Units with the spring arranged around the damper, e.g. MacPherson strut
- B60G2202/314—The spring being a pneumatic spring
-
- 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
- B60G2500/204—Pressure regulating valves for air-springs
- B60G2500/2041—Pressure regulating valves for air-springs for variable volume air springs, e.g. using accumulators as expansion chambers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Vehicle Body Suspensions (AREA)
- Fluid-Damping Devices (AREA)
Abstract
Luftfedersystem
eines McPherson-Federbeins für
ein Kraftfahrzeug mit:
– einem
Luftfedertopf, der an der Fahrzeugkarosserie gelagert ist,
– einer
Kolbenstange eines Schwingungsdämpfers,
die kardanisch an der Fahrzeugkarosserie gelagert ist,
– einem
Federbalg, der einerseits an dem Luftfedertopf und andererseits
an dem Schwingungsdämpfer
befestigt ist und zusammen mit diesen einen Luftraum begrenzt, wobei der
Luftfedertopf mehrere voneinander abgetrennte Kammern aufweist,
die miteinander verbindbar sind,
dadurch gekennzeichnet,
dass
die Längsachse
(42) des Schwingungsdämpfers
(40) beabstandet von der Längsachse
(35) des Federbalgs (30) verläuft.Air spring system of a McPherson strut for a motor vehicle with:
An air spring pot which is mounted on the vehicle body,
A piston rod of a vibration damper, which is mounted gimbal on the vehicle body,
- A bellows, which is attached on the one hand to the air spring pot and on the other hand to the vibration damper and limits together with these an air space, the air spring pot having a plurality of separate chambers, which are connectable to each other,
characterized,
in that the longitudinal axis (42) of the vibration damper (40) extends at a distance from the longitudinal axis (35) of the spring bellows (30).
Description
Die Erfindung betrifft ein Luftfedersystem eines McPherson-Federbeins für ein Kraftfahrzeug gemäß den Merkmalen des Oberbegriffs des Anspruchs 1.The The invention relates to an air spring system of a McPherson strut for a motor vehicle according to the characteristics of the preamble of claim 1.
Ein
gattungsgemäßes Luftfedersystem
ist aus der
Aus
der
Aufgabe der Erfindung ist es demgegenüber, ein Luftfedersystem eines McPherson-Federbeins anzugeben, das sowohl veränderbare Federsteifigkeiten als auch einen hohen Komfort aufweist.task the invention it is in contrast, a To specify the air suspension system of a McPherson strut, both changeable Spring stiffness as well as a high comfort.
Diese Aufgabe wird durch das Luftfedersystem mit den Merkmalen des Anspruchs 1 gelöst.These The object is achieved by the air spring system having the features of the claim 1 solved.
Grundgedanke der Erfindung ist, bei einem derartigen Luftfedersystem den Luftfedertopf aus mehreren Kammern auszuführen, die gegeneinander abgeschlossen sind und deren Volumina miteinander verbunden werden können. So weist die Luftfeder bei einem kleinen eingeschlossenen Luftvolumen infolge einer kleinen Kammer eine höhere Federsteifigkeit auf, als bei einem größeren eingeschlossenen Luftvolumen infolge einer größeren Luftkammer. Durch die Verbindung von Luftkammern kann somit die Federsteifigkeit der Luftfeder verändert werden. Die exzentrische Anordnung des Rollbalgs der Luftfeder in Bezug auf die Längsachse des Dämpferelements des McPherson-Federbeins erzeugt ein Kippmoment, welches über einen hervorgerufenen Querkraftausgleich eine Verringerung der Querkräfte im Dämpferelement bewirkt.basic idea The invention is, in such an air spring system the air spring pot to execute from several chambers, which are closed against each other and whose volumes are interconnected can be. So the air spring points at a small trapped air volume due to a small chamber a higher spring stiffness, as with a larger enclosed one Air volume due to a larger air chamber. By connecting air chambers thus spring stiffness changed the air spring become. The eccentric arrangement of the rolling bellows of the air spring in relation on the longitudinal axis the damper element of McPherson strut generates a tilting moment, which over a caused transverse force compensation a reduction of the transverse forces in the damper element causes.
In Ausgestaltung der Erfindung weist das Luftfedersystem mindestens ein Schaltventil zwischen je zwei Kammern auf, über das eine Verbindung zwischen den Kammern hergestellt werden kann. Dabei kann das Schaltventil als elektromagnetisches Schaltventil oder in Form eines elektrischen Stellmotors ausgebildet sein. Die Ansteuerung des Stellventils bzw. des Stellmotors erfolgt dabei durch ein Steuergerät, das eventuell auch Ventile zur Veränderung der Dämpfungsrate des Schwingungsdämpfers steuern kann.In Embodiment of the invention, the air spring system at least a switching valve between each two chambers, via which a connection between the chambers can be produced. In this case, the switching valve as an electromagnetic switching valve or in the form of an electric servomotor be educated. The control of the control valve or the servomotor This is done by a control unit, possibly also valves to change the attenuation rate of the vibration damper can control.
Das Schaltventil kann so angeordnet werden, dass das Ventil des Schaltventils bzw. das welches von dem elektrischen Stellmotor verstellt wird, in unbetätigtem Zustand die Kammern voneinander trennt und bei Betätigung in Richtung des bei Einfedern des Federbeins aktive Federvolumen geöffnet werden kann. Dadurch wird eine energetisch günstige Anordnung erreicht, indem bei geschlossenem Ventil eine Druckzunahme in dem Luftraum ein weiteres Andrücken des Ventiltellers an den Ventilsitz bewirkt, wohingegen bei geöffnetem Ventil die Luft aus dem Luftraum in eine weitere Kammer des Luftfedertopfes strömen kann. Die Energie, die dabei zum Halten des Ventils in der geöffneten Stellung benötigt wird, ist geringer, als wenn das Ventil entgegen der bei Kompression infolge des Einfederns des Schwingungsdämpfers auftretenden Druckspitzen die Verbindung zwischen zwei Kammern geschlossen halten müsste.The Switching valve can be arranged so that the valve of the switching valve or which is adjusted by the electric servomotor, in unactuated Condition the chambers separated from each other and when pressed in Direction of the spring volume of the shock absorber active spring volume can be opened can. As a result, an energetically favorable arrangement is achieved by increasing the pressure in the airspace when the valve is closed another pressing causes the valve disk to the valve seat, whereas when open Valve the air from the air space into another chamber of the air spring pot stream can. The energy used to hold the valve in the open position needed is less than when the valve is against compression as a result of the compression of the shock absorber occurring pressure peaks the Would have to keep the connection between two chambers closed.
Unter dem aktiven Federvolumen ist dabei das durch den Federtopf, den Federbalg und den Schwingungsdämpfer eingeschlossene Luftvolumen zu verstehen, welches vor der Öffnung des Ventils durch Kompression und Expansion infolge des Ein- und Ausfederns des Schwingungsdämpfers die Feder darstellt.Under the active spring volume is the through the spring cup, the Bellow and the vibration damper To understand enclosed air volume, which before the opening of the Valve by compression and expansion due to compression and rebound of the vibration damper represents the spring.
Der Luftfedertopf und der Federbalg sind so angeordnet, dass die Kolbenstange des Schwingungsdämpfers eine innere Kammer des Luftfedertopfes durchquert. Diese innere Kammer umschließt zusammen mit dem Federbalg und dem Gehäuse des Schwingungsdämpfers einen Luftraum. Die darin eingeschlossene Luft wirkt als pneumatische Feder.Of the Air spring pot and the bellows are arranged so that the piston rod of the vibration damper passes through an inner chamber of the air spring pot. This inner Chamber encloses together with the bellows and the housing of the vibration an airspace. The trapped air acts as a pneumatic Feather.
In weiterer Ausgestaltung der Erfindung weist der Luftfedertopf eine weitere, äußere Kammer auf, die die innere Kammer zumindest auf einem Abschnitt in axialer Ausrichtung radial umschließt. Dabei kann die äußere Kammer auch so gestaltet sein, dass sie ebenfalls den Federbalg zumindest teilweise umgibt und somit für diesen einen Schutz gegen Verschmutzung und Beschädigung darstellt. Eine kompakte Bauform kann dadurch verwirklicht werden.In Another embodiment of the invention, the air spring pot a another, outer chamber on, the inner chamber at least on a portion in axial alignment encloses radially. In this case, the outer chamber also be designed so that they also have the bellows at least partially surrounds and thus for this represents a protection against pollution and damage. A compact design can be realized thereby.
Nachfolgend wir die Erfindung anhand einer in der Zeichnung dargestellten Ausführungsform beschrieben.following the invention with reference to an embodiment shown in the drawing described.
In
der
Die
Außenwand
Der
Schwingungsdämpfer
Der
asymmetrische Innentopf
Der
Federtopf
Ein
2/2-Schaltventil
In
der
Die Federsteifigkeit bei einem größeren Luftvolumen ist geringer als bei einem kleineren Luftvolumen. Somit ist bei Trennung der beiden Volumina durch das Schaltventil eine härte, sportlichere Federung in dem McPherson-Federbein erreichbar, bei Verbinden der beiden Volumina ist hingegen eine Komfortfederung erzielbar.The Spring stiffness with a larger air volume is less than a smaller air volume. Thus, at Separation of the two volumes through the switching valve a hardness, sportier Suspension in the McPherson strut achievable when connecting the On the other hand, a comfort suspension can be achieved in both volumes.
Der
Magnet
Es
ist leicht nachvollziehbar, dass die Luftfedereinheit
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002136621 DE10236621B4 (en) | 2002-08-09 | 2002-08-09 | Air suspension system of a McPherson strut |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002136621 DE10236621B4 (en) | 2002-08-09 | 2002-08-09 | Air suspension system of a McPherson strut |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10236621A1 DE10236621A1 (en) | 2004-03-04 |
DE10236621B4 true DE10236621B4 (en) | 2005-02-03 |
Family
ID=31196958
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2002136621 Expired - Fee Related DE10236621B4 (en) | 2002-08-09 | 2002-08-09 | Air suspension system of a McPherson strut |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10236621B4 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006043471A1 (en) * | 2006-09-15 | 2008-03-27 | Continental Aktiengesellschaft | Air spring strut |
US7703585B2 (en) | 2002-06-25 | 2010-04-27 | Fox Factory, Inc. | Integrated and self-contained suspension assembly having an on-the-fly adjustable air spring |
US8403115B2 (en) | 2008-01-11 | 2013-03-26 | Penske Racing Shocks | Dual rate gas spring shock absorber |
CN103842191A (en) * | 2011-10-06 | 2014-06-04 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Air spring cover with switch-based air volume |
CN104832582A (en) * | 2015-03-19 | 2015-08-12 | 柳州市永益机械制造有限公司 | Composite air spring |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10941828B2 (en) | 2002-06-25 | 2021-03-09 | Fox Factory, Inc. | Gas spring with travel control |
US20080296814A1 (en) | 2002-06-25 | 2008-12-04 | Joseph Franklin | Gas spring with travel control |
US8464850B2 (en) | 2006-11-16 | 2013-06-18 | Fox Factory, Inc. | Gas spring curve control in an adjustable-volume gas-pressurized device |
US7963509B2 (en) | 2007-01-31 | 2011-06-21 | Fox Factory, Inc. | Travel control for a gas spring and gas spring having very short travel modes |
DE10341003A1 (en) | 2003-09-05 | 2005-03-31 | Voss Automotive Gmbh | Damper assembly, in particular air spring strut, and hollow body for use in this arrangement |
DE10359729B4 (en) * | 2003-12-19 | 2014-12-18 | Continental Teves Ag & Co. Ohg | Vehicle spring or strut with additional spring |
DE102004061989A1 (en) * | 2004-12-23 | 2006-07-06 | Continental Aktiengesellschaft | Pneumatic spring for e.g. passenger car, has cover manufactured as single-piece die cast component from plastic material and provided with reinforcement sleeve in area of clamping shaft, where sleeve is made from metal e.g. ferrous metal |
DE102009044189A1 (en) * | 2009-10-07 | 2011-04-21 | Continental Aktiengesellschaft | Air strut with extra volume |
DE102013212978A1 (en) * | 2012-10-18 | 2014-04-24 | Continental Teves Ag & Co. Ohg | Air suspension module |
DE102016216911A1 (en) | 2016-09-06 | 2018-03-08 | Continental Teves Ag & Co. Ohg | Air suspension unit with large-volume air spring cover |
FR3090500B1 (en) * | 2018-12-21 | 2021-06-11 | Psa Automobiles Sa | TWO OPERATING MODES PNEUMATIC SUSPENSION WITH PARALLEL AIR CELLS |
FR3090499B1 (en) * | 2018-12-21 | 2021-06-18 | Psa Automobiles Sa | TWO OPERATING MODES PNEUMATIC SUSPENSION WITH CASCADE AIR CELLS |
CN110017345A (en) * | 2019-03-27 | 2019-07-16 | 清科智能悬架***(苏州)有限公司 | A kind of McPherson air spring vibration damper assembly of the attached gas chamber of band |
CN114151492A (en) * | 2021-10-26 | 2022-03-08 | 岚图汽车科技有限公司 | Strut type double-cavity membrane type air spring |
DE102021212192A1 (en) | 2021-10-28 | 2023-05-04 | Zf Friedrichshafen Ag | Air spring accumulator system for a vehicle with an air spring chassis |
CN114321251B (en) * | 2021-12-30 | 2023-10-13 | 浙江吉利控股集团有限公司 | Air spring assembly and automobile |
DE102022103274A1 (en) | 2022-02-11 | 2023-08-17 | Bayerische Motoren Werke Aktiengesellschaft | Spring strut dome for accommodating a spring strut of an air spring as well as a spring strut and vehicle |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3444577A1 (en) * | 1983-12-14 | 1985-07-25 | Toyota Jidosha K.K., Toyota, Aichi | AIR SUSPENSION |
DE3513225A1 (en) * | 1984-07-24 | 1986-01-30 | Toyota Jidosha K.K., Toyota, Aichi | BEARING DEVICE FOR A PNEUMATIC SUSPENSION |
DE19753637A1 (en) * | 1996-12-17 | 1998-06-18 | Phoenix Ag | Pneumatic spring system for construction of McPherson strut |
-
2002
- 2002-08-09 DE DE2002136621 patent/DE10236621B4/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3444577A1 (en) * | 1983-12-14 | 1985-07-25 | Toyota Jidosha K.K., Toyota, Aichi | AIR SUSPENSION |
DE3513225A1 (en) * | 1984-07-24 | 1986-01-30 | Toyota Jidosha K.K., Toyota, Aichi | BEARING DEVICE FOR A PNEUMATIC SUSPENSION |
DE19753637A1 (en) * | 1996-12-17 | 1998-06-18 | Phoenix Ag | Pneumatic spring system for construction of McPherson strut |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7703585B2 (en) | 2002-06-25 | 2010-04-27 | Fox Factory, Inc. | Integrated and self-contained suspension assembly having an on-the-fly adjustable air spring |
DE102006043471A1 (en) * | 2006-09-15 | 2008-03-27 | Continental Aktiengesellschaft | Air spring strut |
US8403115B2 (en) | 2008-01-11 | 2013-03-26 | Penske Racing Shocks | Dual rate gas spring shock absorber |
CN103842191A (en) * | 2011-10-06 | 2014-06-04 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Air spring cover with switch-based air volume |
CN103842191B (en) * | 2011-10-06 | 2016-02-10 | 大陆-特韦斯贸易合伙股份公司及两合公司 | With the air bellow lid of the air volume that can connect |
CN104832582A (en) * | 2015-03-19 | 2015-08-12 | 柳州市永益机械制造有限公司 | Composite air spring |
Also Published As
Publication number | Publication date |
---|---|
DE10236621A1 (en) | 2004-03-04 |
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Legal Events
Date | Code | Title | Description |
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OP8 | Request for examination as to paragraph 44 patent law | ||
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: DAIMLERCHRYSLER AG, 70327 STUTTGART, DE |
|
8327 | Change in the person/name/address of the patent owner |
Owner name: DAIMLER AG, 70327 STUTTGART, DE |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20130301 |