DE102005011526A1 - Hydraulic power steering for motor vehicle, has two electrically controllable valve units connected parallel to servo valve and communicating with pressure line and respective feed line, where servo valve is valve with closed center - Google Patents
Hydraulic power steering for motor vehicle, has two electrically controllable valve units connected parallel to servo valve and communicating with pressure line and respective feed line, where servo valve is valve with closed center Download PDFInfo
- Publication number
- DE102005011526A1 DE102005011526A1 DE200510011526 DE102005011526A DE102005011526A1 DE 102005011526 A1 DE102005011526 A1 DE 102005011526A1 DE 200510011526 DE200510011526 DE 200510011526 DE 102005011526 A DE102005011526 A DE 102005011526A DE 102005011526 A1 DE102005011526 A1 DE 102005011526A1
- Authority
- DE
- Germany
- Prior art keywords
- valve
- power steering
- servo
- steering
- pressure line
- 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- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/09—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by means for actuating valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/065—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by specially adapted means for varying pressurised fluid supply based on need, e.g. on-demand, variable assist
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/08—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by type of steering valve used
- B62D5/083—Rotary valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D6/00—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
- B62D6/02—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to vehicle speed
Abstract
Description
Die vorliegende Erfindung geht aus von einer hydraulischen Servolenkung für Kraftfahrzeuge mit den Merkmalen des Oberbegriffs des Anspruchs 1.The The present invention is based on a hydraulic power steering for motor vehicles with the features of the preamble of claim 1.
Der
gattungsbildende Stand der Technik ist in der deutschen Patentschrift
Bei dieser Lenkung sind die Rückwirkungsanordnungen mechanisch im Drehschieberventil realisiert. Dieser mechanische Aufbau erfordert eine sehr präzise Fertigung, um in der Neutralstellung praktisch drehmomentfrei zu sein. Außerdem wirkt die Vorrichtung nur mittelbar, nämlich über eine Beeinflussung des Drehschieberventils, auf den Servomotor.at This steering are the feedback arrangements realized mechanically in the rotary valve. This mechanical Construction requires a very precise Manufacturing to virtually torque-free in the neutral position be. Furthermore the device acts only indirectly, namely on an influence of the Rotary slide valve, on the servomotor.
Es ist deshalb Aufgabe der vorliegenden Erfindung, eine hydraulische Servolenkung der gattungsgemäßen Art zu vereinfachen. Diese Aufgabe wird von einer Servolenkung mit den Merkmalen des Anspruchs 1 gelöst.It is therefore an object of the present invention, a hydraulic Power steering of the generic type to simplify. This task is accomplished by a power steering with the Characteristics of claim 1 solved.
Weil elektrisch steuerbare Ventilmittel vorgesehen sind, die parallel zu dem Drehschieberventil geschaltet sind und die einerseits mit der Druckleitung und andererseits mit jeweils einer Zuleitung kommunizieren, kann unabhängig von der Stellung des Drehschieberventils der eine oder der andere Arbeitsraum des Servomotors mit Druck beaufschlagt werden und dadurch ein aktiver Eingriff in die Lenkung erzielt werden. Dabei wird der Lenkimpuls unmittelbar hydraulisch im Servomotor generiert und nicht mittelbar über eine mechanische Auslenkung des Drehschieberventils erzeugt.Because electrically controllable valve means are provided which are parallel are connected to the rotary valve and the one hand with the pressure line and on the other hand communicate with one supply line, can be independent from the position of the rotary valve one or the other Working space of the servo motor are pressurized and thereby an active intervention in the steering can be achieved. It is the Steering impulse generated directly in the hydraulic servo motor and not indirectly via generates a mechanical deflection of the rotary valve.
Der aktive Lenkeingriff ist besonders gut steuerbar, wenn die Ventilmittel zwei elektrisch steuerbare variable Blenden sind. Es kann auch vorgesehen sein, dass die Ventilmittel zwei elektrisch steuerbare 2/2-Wegeventile sind. Diese Ausführungsform ist kostengünstig herzustellen. Eine einfache Sicherheitsfunktion lässt sich erzielen, wenn die Ventilmittel in der hohen Stellung geschlossen sind. Dann ist insbesondere bei einem Spannungsausfall kein abrupter, für den Fahrer unerwarteter Lenkeingriff möglich.Of the Active steering intervention is particularly well controllable when the valve means two electrically controllable variable aperture are. It can also be provided be that the valve means two electrically controllable 2/2-way valves are. This embodiment is economical manufacture. A simple safety function can be achieved when the valve means closed in the high position are. Then, especially in the event of a power failure, there is no abrupt for the Driver unexpected steering intervention possible.
Besonders wirksam ist die neue Kraftfahrzeuglenkung, wenn das Drehschieberventil ein Ventil mit geschlossener Mitte ist. In diesem Fall ist der Vordruck in der Druckleitung besonders hoch, so dass durch Ansteuerung der Ventilmittel ein wirksamer autonomer Lenkeingriff erzeugt werden kann.Especially effective is the new motor vehicle steering when the rotary valve is a valve with closed center. In this case, the form is particularly high in the pressure line, so that by controlling the Valve means are generated an effective autonomous steering intervention can.
Es kann weiter in der Steuerung vorgesehen sein, dass in Abhängigkeit von Eingangsgrößen die Ventilmittel angesteuert werden und dass die Ventilmittel bei einer Inkonsistenz zwischen den Eingangsgrößen und den Ausgangssignalen geschlossen werden, um keine fälschlichen autonomen Lenkeingriffe zu erzeugen.It may be further provided in the control that depending of input variables the valve means be controlled and that the valve means in case of inconsistency between the input quantities and the output signals are closed, not a fake one to generate autonomous steering interventions.
Nachfolgend wird ein Ausführungsbeispiel der vorliegenden Erfindung anhand der Zeichnung beschrieben. Es zeigen:following is an embodiment of present invention described with reference to the drawing. Show it:
Die
Das
Drehschieberventil
Insoweit ist der Aufbau der hydraulischen Servolenkung konventionell.in this respect the construction of the hydraulic power steering is conventional.
Zusätzlich sind
zwei elektrisch steuerbare, variable Blenden
Eine
elektronische Steuerung
Ein Drucksensor
zwei
Drucksensoren
ein Winkelsensor
ein Winkelsensor
A pressure sensor
two pressure sensors
an angle sensor
an angle sensor
Aus
den Signalen der Sensoren
Die
Steuerung
In
der Praxis arbeitet die hydraulische Servolenkung, die insoweit
beschrieben wurde, zunächst
in konventioneller Weise. Die Hydraulikpumpe
Wird
das Lenkrad
Wenn
nun ein Lenkimpuls unabhängig
von dem Drehmoment, welches der Fahrer in das Lenkrad
Die
Steuerung
Es
kann vorgesehen sein, dass die erzielten Drücke in den Arbeitsräumen
In
der
Bei
der in
Die
Eine
besonders vorteilhafte Ausführungsform
stellt die
Neben der dargestellten Arbeitsweise als sogenannte aktive Lenkung, die für das Durchführen von autonomen Lenkeingriffen oder Lenkbewegungen eingerichtet ist, kann die erfindungsgemäße Kraftfahrzeuglenkung auch in einer Weise verwendet werden, die die Servounterstützung gezielt verringert oder vergrößert und damit eine schwergängige oder eine leichtgängige Lenkung simuliert. Die Beeinflussung der resultierenden Lenkunterstüt zung kann geschwindigkeitsabhängig erfolgen, so dass eine Parametrisierung im Sinne einer geschwindigkeitsabhängigen Servounterstützung durch die erfindungsgemäße Lenkung in besonders einfacher Weise zu realisieren ist.Next the illustrated operation as so-called active steering, the for the Performing autonomous steering interventions or steering movements is established the motor vehicle steering system according to the invention also be used in a way that targeted the servo assistance reduced or enlarged and thus a difficult one or a smooth-running Steering simulated. Influencing the resulting steering assistance can depending on speed done so that a parameterization in the sense of a speed-dependent servo assistance by the steering system according to the invention can be realized in a particularly simple manner.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510011526 DE102005011526A1 (en) | 2005-03-10 | 2005-03-10 | Hydraulic power steering for motor vehicle, has two electrically controllable valve units connected parallel to servo valve and communicating with pressure line and respective feed line, where servo valve is valve with closed center |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510011526 DE102005011526A1 (en) | 2005-03-10 | 2005-03-10 | Hydraulic power steering for motor vehicle, has two electrically controllable valve units connected parallel to servo valve and communicating with pressure line and respective feed line, where servo valve is valve with closed center |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102005011526A1 true DE102005011526A1 (en) | 2006-10-19 |
Family
ID=37055181
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200510011526 Withdrawn DE102005011526A1 (en) | 2005-03-10 | 2005-03-10 | Hydraulic power steering for motor vehicle, has two electrically controllable valve units connected parallel to servo valve and communicating with pressure line and respective feed line, where servo valve is valve with closed center |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102005011526A1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008035793A1 (en) * | 2008-07-31 | 2010-02-11 | Trw Automotive Gmbh | Method for controlling of hydraulic vehicle steering system, involves subjecting hydraulic cylinder for supply of hydraulic steering load by pump with fluid |
DE102015106313A1 (en) | 2015-04-24 | 2016-10-27 | Tedrive Steering Systems Gmbh | Power steering assembly with steering torque overlay |
DE102017109799A1 (en) * | 2017-05-08 | 2018-11-08 | Danfoss Power Solutions Aps | Hydraulic steering unit |
DE102017109801A1 (en) * | 2017-05-08 | 2018-11-08 | Danfoss Power Solutions Aps | Hydraulic steering unit |
DE102017109800A1 (en) * | 2017-05-08 | 2018-11-08 | Danfoss Power Solutions Aps | Hydraulic steering unit |
WO2018206256A1 (en) * | 2017-05-08 | 2018-11-15 | Danfoss Power Solutions Aps | Hydraulic steering unit |
US10611402B2 (en) | 2017-05-08 | 2020-04-07 | Danfoss Power Solutions Aps | Hydraulic steering unit |
DE102018133300A1 (en) | 2018-12-21 | 2020-06-25 | Danfoss Power Solutions Aps | Hydraulic steering unit |
-
2005
- 2005-03-10 DE DE200510011526 patent/DE102005011526A1/en not_active Withdrawn
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008035793A1 (en) * | 2008-07-31 | 2010-02-11 | Trw Automotive Gmbh | Method for controlling of hydraulic vehicle steering system, involves subjecting hydraulic cylinder for supply of hydraulic steering load by pump with fluid |
DE102008035793B4 (en) * | 2008-07-31 | 2020-10-22 | Zf Automotive Germany Gmbh | Method for controlling a hydraulic vehicle steering system and a hydraulic vehicle steering system |
DE102015106313A1 (en) | 2015-04-24 | 2016-10-27 | Tedrive Steering Systems Gmbh | Power steering assembly with steering torque overlay |
DE102015106313B4 (en) * | 2015-04-24 | 2017-03-23 | Tedrive Steering Systems Gmbh | Power steering assembly with steering torque overlay |
DE102017109800B4 (en) | 2017-05-08 | 2019-01-24 | Danfoss Power Solutions Aps | Hydraulic steering unit |
US10766524B2 (en) | 2017-05-08 | 2020-09-08 | Danfoss Power Solutions Aps | Hydraulic steering unit |
WO2018206256A1 (en) * | 2017-05-08 | 2018-11-15 | Danfoss Power Solutions Aps | Hydraulic steering unit |
DE102017109799B4 (en) | 2017-05-08 | 2019-01-17 | Danfoss Power Solutions Aps | Hydraulic steering unit |
DE102017109801A1 (en) * | 2017-05-08 | 2018-11-08 | Danfoss Power Solutions Aps | Hydraulic steering unit |
DE102017109801B4 (en) | 2017-05-08 | 2019-02-07 | Danfoss Power Solutions Aps | Hydraulic steering unit |
US10611402B2 (en) | 2017-05-08 | 2020-04-07 | Danfoss Power Solutions Aps | Hydraulic steering unit |
US10953915B2 (en) | 2017-05-08 | 2021-03-23 | Danfoss Power Solutions Aps | Hydraulic steering unit |
US10730548B2 (en) | 2017-05-08 | 2020-08-04 | Danfoss Power Solutions Aps | Hydraulic steering unit |
US10843725B2 (en) | 2017-05-08 | 2020-11-24 | Danfoss Power Solutions Aps | Hydraulic steering unit |
DE102017109800A1 (en) * | 2017-05-08 | 2018-11-08 | Danfoss Power Solutions Aps | Hydraulic steering unit |
DE102017109799A1 (en) * | 2017-05-08 | 2018-11-08 | Danfoss Power Solutions Aps | Hydraulic steering unit |
DE102018133300B4 (en) * | 2018-12-21 | 2020-08-20 | Danfoss Power Solutions Aps | Hydraulic steering unit |
DE102018133300A1 (en) | 2018-12-21 | 2020-06-25 | Danfoss Power Solutions Aps | Hydraulic steering unit |
US11155295B2 (en) | 2018-12-21 | 2021-10-26 | Danfoss Power Solutions Aps | Hydraulic steering unit |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1910151B1 (en) | Electrohydraulic steering system | |
DE112004001258B4 (en) | Device for pivoting steerable wheels of a vehicle | |
DE102005011526A1 (en) | Hydraulic power steering for motor vehicle, has two electrically controllable valve units connected parallel to servo valve and communicating with pressure line and respective feed line, where servo valve is valve with closed center | |
DE2851773A1 (en) | HYDRAULIC STEERING DEVICE WITH REACTIVE EFFECT ON THE ACTUATING DEVICE | |
DE102017109794B4 (en) | Hydraulic steering unit | |
DE3729156C2 (en) | ||
DE19717796A1 (en) | Power steering with hydraulic power assist | |
DE102017100186B4 (en) | Hydraulic steering arrangement | |
EP1695892B1 (en) | Active hydraulic steering with reduced monitoring complexity | |
DE19825579B4 (en) | Hydraulic steering device | |
DE69828273T2 (en) | HYDRAULIC STEERING DEVICE | |
DE10211396A1 (en) | Hydraulic power-assisted steering for automobile has clutch for disengaging drive motor from hydraulic pump | |
DE2931139C2 (en) | Control valve with open center position | |
DE102004061077B4 (en) | Hydraulic steering device | |
DE102004027971B4 (en) | Hydraulic steering device | |
DE3820876C2 (en) | Hydrostatic steering device | |
DE3837395A1 (en) | Hydrostatic power-steering system for vehicles | |
DE102017109800B4 (en) | Hydraulic steering unit | |
DE102005013104A1 (en) | Hydraulic power-assisted steering for motor vehicles has a servo valve linked directly/indirectly to a steering handle with a rotating disk structure with its turning control parts interlinked | |
DE19929428A1 (en) | Electrohydraulic steering system for automobile with separate steering circuits for steer-by-wire and servo-assisted mechanical steering modes | |
DE102006006722A1 (en) | Electrohydraulic vehicle steering with linear pressure characteristic | |
DE102005016181B4 (en) | Regulating device for a hydraulic conveyor | |
DE10321109B4 (en) | Leakage compensation arrangement in a control device for a fully hydraulic steering system | |
DE2110725A1 (en) | Power steering device for motor vehicles | |
EP1419082B1 (en) | Power-assisted steering system with sensors for determining the steering effort |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OR8 | Request for search as to paragraph 43 lit. 1 sentence 1 patent law | ||
8125 | Change of the main classification |
Ipc: B62D 5/09 AFI20051017BHDE |
|
8139 | Disposal/non-payment of the annual fee |