DE102008032950B3 - Self-pumping hydropneumatic suspension strut for vehicle, comprises oil-filled, working cylinder placed under pressure, and gas cushion acting as spring arranged in high pressure chamber - Google Patents
Self-pumping hydropneumatic suspension strut for vehicle, comprises oil-filled, working cylinder placed under pressure, and gas cushion acting as spring arranged in high pressure chamber Download PDFInfo
- Publication number
- DE102008032950B3 DE102008032950B3 DE200810032950 DE102008032950A DE102008032950B3 DE 102008032950 B3 DE102008032950 B3 DE 102008032950B3 DE 200810032950 DE200810032950 DE 200810032950 DE 102008032950 A DE102008032950 A DE 102008032950A DE 102008032950 B3 DE102008032950 B3 DE 102008032950B3
- Authority
- DE
- Germany
- Prior art keywords
- pressure chamber
- flow connection
- working
- piston
- strut according
- 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
-
- 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
- B60G13/02—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally
- B60G13/06—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally of fluid type
- B60G13/08—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally of fluid type hydraulic
-
- 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
- B60G17/044—Self-pumping fluid 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
Die Erfindung bezieht sich auf ein selbstpumpendes hydropneumatisches Federbein mit innerer Niveauregelung, insbesondere für Kraftfahrzeuge, mit einem ölgefüllten, unter dem Druck mindestens eines in einer Hochdruckkammer angeordneten und als Feder wirkenden Gaspolsters stehenden Arbeitszylinder, der durch einen von einer hohlen Kolbenstange getragenen Arbeitskolben in zwei Arbeitsräume unterteilt wird, mit einer durch die Federbewegungen angetriebenen und Öl aus einer Niederdruckkammer in den mit der Hochdruckkammer verbundenen Arbeitsraum fördernden Kolbenpumpe und mit einer die Hochdruckkammer mit der Niederdruckkammer verbindenden ersten Strömungsverbindung.The The invention relates to a self-pumping hydropneumatic Suspension strut with internal level control, especially for motor vehicles, with an oil filled, under the pressure of at least one arranged in a high-pressure chamber and working as a spring-acting gas cushion working cylinder, the by a piston supported by a hollow piston rod working piston in two workrooms is divided, with a driven by the spring movements and oil from a low pressure chamber in the connected to the high pressure chamber Promoting working space Piston pump and with a high pressure chamber with the low pressure chamber connecting first flow connection.
Es
sind bereits selbstpumpende hydropneumatische Federbeine, z. B.
die gattungsbildende
Des
Weiteren sind selbstpumpende hydropneumatische Federbeine mit innerer
Niveauregelung bekannt (z. B.
Aufgabe der Erfindung ist es, ein selbstpumpendes hydropneumatisches Federbein mit innerer Niveauregelung zu schaffen, welches kompakt und kostengüns tig herstellbar ist und zur Realisierung einer Einstellung von mindestens zwei Niveauhöhen des Fahrzeugaufbaus lediglich einfache Mittel benötigt.task The invention is a self-pumping hydropneumatic strut to create with internal level control, which compact and kostengüns tig produced is and to realize a setting of at least two levels of height of Vehicle construction requires only simple means.
Zur Lösung dieser Aufgabe ist zusammen mit dem Oberbegriff des Patentanspruchs 1 erfindungsgemäß vorgesehen, dass eine weitere die Hochdruckkammer mit der Niederdruckkammer verbindende zweite Strömungsverbindung vorgesehen ist, welche über ein Ventil zu- oder abschaltbar ist.to solution This object is together with the preamble of the claim 1 provided according to the invention, that another one the high pressure chamber with the low pressure chamber connecting second flow connection is provided, which over a valve can be switched on or off.
Vorteilhaft ist hierbei, dass der Fahrzeugaufbau eines Kraftfahrzeuges auf mindestens zwei verschiedene Niveaus einstellbar ist, so dass z. B. ein Normalniveau für eine Langsamfahrt und ein abgesenktes Niveau für eine schnelle Fahrt eingestellt werden kann. Das Normalniveau zeichnet sich durch einen komfortablen Einfederhub des Fahrzeugaufbaus aus und das abgesenkte Niveau des Fahrzeugaufbaus könnte z. B. den Luftwiderstand (CW-Wert) des Fahrzeuges verringern. Auf dieser Art und Weise lässt sich der Luftwiderstand (CW-Wert) von Kraftfahrzeugen fahrgeschwindigkeitsabhängig verändern. Der weitere Vorteil besteht darin, dass die Absenkung des Fahrzeugniveaus zu einer Minimierung des Kraftstoffverbrauchs führt und zusätzlich durch eine Schwerpunktabsenkung noch eine sicherheitsrelevante bessere Straßenlage des Fahrzeuges aufweist.Advantageous Here is that the vehicle body of a motor vehicle on at least two different levels is adjustable so that z. B. a normal level for one Slow speed and a lowered level can be set for a fast ride can. The normal level is characterized by a comfortable compression stroke of the vehicle body and the lowered level of the vehicle body could z. B. reduce the air resistance (CW value) of the vehicle. On this way lets the air resistance (CW value) of motor vehicles vary depending on driving speed. Of the Another advantage is that the lowering of the vehicle level to a minimization of fuel consumption leads and in addition by a center of gravity reduction still has a safety-relevant better road holding of the vehicle.
Nach einem weiteren wesentlichen Merkmal ist vorgesehen, dass die erste Strömungsverbindung und die zweite Strömungsverbindung zur Regelung jeweils unterschiedlicher Höhen des Fahrzeugaufbaus dienen.To Another essential feature is that the first Flow connection and the second flow connection serve to control each different heights of the vehicle body.
Eine weitere Ausgestaltung sieht vor, dass das Ventil extern ansteuerbar ist.A Another embodiment provides that the valve can be controlled externally is.
Nach einem wesentlichen Merkmal ist vorgesehen, dass die erste Strömungsverbindung als offene Strömungsverbindung ausgebildet ist, die durch die Kolbenstange oder den Arbeitskolben verschlossen wird.To a significant feature is provided that the first flow connection as an open flow connection is formed by the piston rod or the working piston is closed.
Zur Erzielung einer zeitlichen Verzögerung der Abregelung des Fahrzeugaufbaus ist vorgesehen, dass die zweite Strömungsverbindung eine Drosselstelle aufweist. Mit Vorteil ist dabei vorgesehen, dass die Drosselstelle den Querschnitt der zweiten Strömungsverbindung zumindest partiell verkleinert.to Achieving a time delay of Abregelung of the vehicle body is provided that the second flow connection having a throttle point. Advantageously, it is provided that the throttle point the cross section of the second flow connection at least partially reduced.
Eine weitere Ausgestaltung sieht vor, dass die zweite Strömungsverbindung teilweise als Ringkanal in einer Pumpenstange angeordnet ist.A Another embodiment provides that the second flow connection is partially arranged as an annular channel in a pump rod.
Eine weitere Ausgestaltung sieht vor, dass mindestens eine der Strömungsverbindungen drosselfrei ausgebildet ist.A Another embodiment provides that at least one of the flow connections throttle-free is formed.
Bevorzugte Ausführungsbeispiele der Erfindung sind in den Zeichnungen schematisch dargestellt.preferred embodiments The invention are shown schematically in the drawings.
Es zeigt:It shows:
Das
in
Bei
entladenem Fahrzeug federt der Fahrzeugaufbau zunächst aus,
bis die Ablassbohrung
Zur
Absenkung des Fahrzeugaufbaus vom Normalniveau auf ein abgesenktes
Niveau wird das Ventil
Sobald
das Ventil
In
der
Aus
der
- 11
- Federbeinstrut
- 22
- Arbeitszylinderworking cylinder
- 33
- Kolbenstangepiston rod
- 44
- Arbeitskolbenworking piston
- 55
- Arbeitsraumworking space
- 66
- Arbeitsraumworking space
- 77
- Kolbenpumpepiston pump
- 88th
- HochdruckkammerHigh-pressure chamber
- 99
- NiederdruckkammerLow-pressure chamber
- 1010
- erste Strömungsverbindungfirst flow connection
- 1111
- zweite Strömungsverbindungsecond flow connection
- 1212
- VentilValve
- 1313
- Drosselstellerestriction
- 1414
- Ringkanalannular channel
- 1515
- Pumpenstangepump rod
- 1616
- Ablassbohrungdrain hole
- 1717
- Ablassöffnungdrain hole
- 1818
- Membranmembrane
- 1919
- Kanalchannel
- 2020
- Saugventilsuction
- 2121
- Druckventilpressure valve
- 2222
- Kanalchannel
- 2323
- Bypassbypass
- 2424
- Rückschlagventilcheck valve
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810032950 DE102008032950B3 (en) | 2008-07-12 | 2008-07-12 | Self-pumping hydropneumatic suspension strut for vehicle, comprises oil-filled, working cylinder placed under pressure, and gas cushion acting as spring arranged in high pressure chamber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810032950 DE102008032950B3 (en) | 2008-07-12 | 2008-07-12 | Self-pumping hydropneumatic suspension strut for vehicle, comprises oil-filled, working cylinder placed under pressure, and gas cushion acting as spring arranged in high pressure chamber |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008032950B3 true DE102008032950B3 (en) | 2010-02-18 |
Family
ID=41528403
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200810032950 Expired - Fee Related DE102008032950B3 (en) | 2008-07-12 | 2008-07-12 | Self-pumping hydropneumatic suspension strut for vehicle, comprises oil-filled, working cylinder placed under pressure, and gas cushion acting as spring arranged in high pressure chamber |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102008032950B3 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011147613A2 (en) | 2010-08-28 | 2011-12-01 | Zf Friedrichshafen Ag | Self-pumping suspension strut |
DE102010041411A1 (en) | 2010-09-27 | 2012-03-29 | Zf Friedrichshafen Ag | Self-pumping hydropneumatic spring strut for motor vehicles, has internal level control, where one of pump rod receiving end of piston rod is formed as rotationally asymmetric functional body |
DE102011082262A1 (en) | 2011-09-07 | 2013-03-07 | Bayerische Motoren Werke Aktiengesellschaft | Self-pumping hydro-pneumatic spring strut for use with inner ride control system for vehicle, has high pressure chamber, which is permanently connected with low pressure chamber over tight flow-section using passage |
DE102016201649A1 (en) | 2015-09-21 | 2017-03-23 | Zf Friedrichshafen Ag | Self-pumping hydropneumatic strut |
CN112389150A (en) * | 2020-11-19 | 2021-02-23 | 中联重科股份有限公司 | Oil filling assembly and oil filling method for suspension system of mining dump truck |
DE102013102588B4 (en) | 2012-09-24 | 2023-02-23 | Hitachi Astemo, Ltd. | Vehicle height adjustment device for a motorcycle |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005048742A1 (en) * | 2005-10-10 | 2007-04-19 | Zf Friedrichshafen Ag | Self-pumping hydropneumatic spring strut for motor vehicles has valve arranged in flow connection in piston pump, and which opens based on pressure for oil to pass from high to low pressure chamber |
DE102004047898B4 (en) * | 2004-10-01 | 2007-12-20 | Zf Friedrichshafen Ag | Self-pumping hydropneumatic strut |
-
2008
- 2008-07-12 DE DE200810032950 patent/DE102008032950B3/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004047898B4 (en) * | 2004-10-01 | 2007-12-20 | Zf Friedrichshafen Ag | Self-pumping hydropneumatic strut |
DE102005048742A1 (en) * | 2005-10-10 | 2007-04-19 | Zf Friedrichshafen Ag | Self-pumping hydropneumatic spring strut for motor vehicles has valve arranged in flow connection in piston pump, and which opens based on pressure for oil to pass from high to low pressure chamber |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8840094B2 (en) | 2010-05-27 | 2014-09-23 | Zf Friedrichshafen Ag | Self-pumping suspension strut |
CN102905915A (en) * | 2010-05-27 | 2013-01-30 | Zf腓德烈斯哈芬股份公司 | Self-pumping suspension strut |
WO2011147613A3 (en) * | 2010-08-28 | 2012-02-16 | Zf Friedrichshafen Ag | Self-pumping suspension strut |
DE102010029387A1 (en) | 2010-08-28 | 2012-03-01 | Zf Friedrichshafen Ag | Self-inflating strut |
WO2011147613A2 (en) | 2010-08-28 | 2011-12-01 | Zf Friedrichshafen Ag | Self-pumping suspension strut |
DE102010041411A1 (en) | 2010-09-27 | 2012-03-29 | Zf Friedrichshafen Ag | Self-pumping hydropneumatic spring strut for motor vehicles, has internal level control, where one of pump rod receiving end of piston rod is formed as rotationally asymmetric functional body |
DE102011082262A1 (en) | 2011-09-07 | 2013-03-07 | Bayerische Motoren Werke Aktiengesellschaft | Self-pumping hydro-pneumatic spring strut for use with inner ride control system for vehicle, has high pressure chamber, which is permanently connected with low pressure chamber over tight flow-section using passage |
DE102011082262B4 (en) | 2011-09-07 | 2020-07-09 | Bayerische Motoren Werke Aktiengesellschaft | Self-pumping hydropneumatic shock absorber |
DE102013102588B4 (en) | 2012-09-24 | 2023-02-23 | Hitachi Astemo, Ltd. | Vehicle height adjustment device for a motorcycle |
DE102016201649A1 (en) | 2015-09-21 | 2017-03-23 | Zf Friedrichshafen Ag | Self-pumping hydropneumatic strut |
US9975393B2 (en) | 2015-09-21 | 2018-05-22 | Zf Friedrichshafen Ag | Self-pumping hydropneumatic suspension strut |
DE102016201649B4 (en) | 2015-09-21 | 2018-07-26 | Zf Friedrichshafen Ag | Self-pumping hydropneumatic strut |
CN112389150A (en) * | 2020-11-19 | 2021-02-23 | 中联重科股份有限公司 | Oil filling assembly and oil filling method for suspension system of mining dump truck |
CN112389150B (en) * | 2020-11-19 | 2022-06-10 | 中联重科股份有限公司 | Oil filling assembly and oil filling method for suspension system of mining dump truck |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE102005048742B4 (en) | Self-pumping hydropneumatic strut with internal level control | |
DE19849222B4 (en) | Self-pumping hydropneumatic shock absorber with internal level control | |
DE102007036102B4 (en) | Self-inflating hydropneumatic spring-damper unit | |
DE102006025826B4 (en) | Self-pumping hydropneumatic strut | |
DE102008032950B3 (en) | Self-pumping hydropneumatic suspension strut for vehicle, comprises oil-filled, working cylinder placed under pressure, and gas cushion acting as spring arranged in high pressure chamber | |
DE3914385C2 (en) | ||
DE102006025576B3 (en) | Method for level control in a motor vehicle | |
DE1505522B1 (en) | Hydropneumatic single-tube telescopic shock absorber with independent, parallel-connected gas spring and automatically controllable degree of damping, especially for motor vehicles | |
DE19959197B4 (en) | Self-pumping hydropneumatic strut with internal level control | |
DE19857595C2 (en) | Self-pumping hydropneumatic shock absorber with internal level control | |
DE102013206122B4 (en) | Device for height adjustment of a vehicle body | |
DE102006013072B3 (en) | Self-pumping hydropneumatic spring damper unit with internal levelling control has at least one restrictor, acting in pressure-dependent manner, in pump chamber between high pressure gas cushion and low pressure gas cushion | |
DE19704189C2 (en) | Self-pumping hydropneumatic shock absorber with internal level control | |
DE102018210403A1 (en) | Vehicle wheel suspension with an adjustment system for the base point of a body suspension spring | |
DE102004047898B4 (en) | Self-pumping hydropneumatic strut | |
DE4416641A1 (en) | Self=actuating, hydropneumatic shock absorber for vehicle | |
EP1584502B1 (en) | Suspension and damping device for motor vehicles | |
DE19635880C2 (en) | Self-pumping hydropneumatic shock absorber with internal level control | |
DE19818116C1 (en) | Self pumping hydropneumatic vehicle gas strut with level adjustment | |
DE102008029997B4 (en) | Piston-cylinder assembly | |
DE10324993A1 (en) | Vehicle suspension system, has pneumatic spring reservoir provided in expansion tank to generate preloading to be applied on piston of strut cylinder | |
DE19841127C1 (en) | Hydropneumatic motor vehicle suspension strut has working cylinder connected to low pressure chamber by elastic pipe | |
DE4406348C1 (en) | Self-pumping hydropneumatic vehicle shock absorber with level control | |
DE102008017763B4 (en) | Self-inflating hydropneumatic spring-damper unit | |
DE3828074C1 (en) | Self-priming hydropneumatic spring strut |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |