EP0522109A1 - Power-assisted hydraulic steering for motor vehicles - Google Patents

Power-assisted hydraulic steering for motor vehicles

Info

Publication number
EP0522109A1
EP0522109A1 EP92902441A EP92902441A EP0522109A1 EP 0522109 A1 EP0522109 A1 EP 0522109A1 EP 92902441 A EP92902441 A EP 92902441A EP 92902441 A EP92902441 A EP 92902441A EP 0522109 A1 EP0522109 A1 EP 0522109A1
Authority
EP
European Patent Office
Prior art keywords
pump
steering
motor
housing
power steering
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.)
Ceased
Application number
EP92902441A
Other languages
German (de)
French (fr)
Inventor
Wilhelm Beer
Nabil Henein
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.)
ITT Automotive Europe GmbH
Original Assignee
ITT Automotive Europe GmbH
Alfred Teves GmbH
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 ITT Automotive Europe GmbH, Alfred Teves GmbH filed Critical ITT Automotive Europe GmbH
Publication of EP0522109A1 publication Critical patent/EP0522109A1/en
Ceased legal-status Critical Current

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
    • B62D5/062—Details, component parts
    • B62D5/064—Pump driven independently from vehicle engine, e.g. electric driven pump
    • 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
    • B62D5/20—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle specially adapted for particular type of steering gear or particular application
    • B62D5/22—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle specially adapted for particular type of steering gear or particular application for rack-and-pinion type

Definitions

  • Hydraulic power steering for motor vehicles consisting of a steering gear with housing, steering shaft and rack, a hydraulic cylinder connected to the rack, a pump and a steering valve which controls the pressure medium flow from the pump to the hydraulic cylinder depending on the actuation of the steering.
  • Such steering systems are installed in many PK's, especially in the luxury class.
  • the individual parts are usually inserted one after the other directly into the body on the assembly line of the automobile manufacturer. After installation, the system is filled with pressure medium, vented and tested. If a defect is found here, the defective parts have to be removed and replaced with great effort, this is expensive, as is the necessary storage by the vehicle manufacturer.
  • the invention is therefore based on the task of producing a fully assembled, tested and filled hydraulic see power steering that meets today's requirements for industrial production, logistical processes and recycling and is also inexpensive.
  • An advantageous development of the invention provides that the pump is driven by an electric motor and that the latter is firmly connected to the pump.
  • pumps driven by internal combustion engines which have to be driven from the crankshaft via a belt and in which the drive belt can only be attached after installation in the vehicle
  • pumps driven by an electric motor can be used together with the motor in the Unit are installed. After installing the unit in the motor vehicle, only a cable connector for powering the engine needs to be connected to the vehicle electrical system.
  • damping elements are attached between the pump and the other parts. are ordered. This measure prevents the vibrations which inevitably occur during operation of the pump from being transmitted to other elements.
  • Sound absorption is particularly effective if the damping elements are attached to the pump housing in the area of vibration nodes.
  • the lowest vibration amplitudes occur in the nodes, so the vibrations are only transmitted relatively weakly at these points anyway.
  • Fig. 1 is a power steering, in which all parts form a unit and
  • Fig. 2 is a damping element, enlarged.
  • the power steering system is shown schematically.
  • the hydraulic cylinder 2 and the toothed rack 3 are located in the housing 1.
  • the steering shaft 4 protrudes from a section 5 of the housing 1.
  • the steering valve 6 is fixedly connected to the housing 1 in front of the steering shaft 4.
  • the motor-pump unit 8 is also fixed to the housing via the pump holder 7 attached to the housing 1
  • control unit On the steering shaft 4 there is a steering angle and / or steering speed sensor (not shown), the output signal of which is fed to a control unit, which is advantageously integrated into the motor-pump unit 8.
  • the control unit is supplied with further signals, such as a signal corresponding to the vehicle speed.
  • the control unit controls the voltage supply to the pump motor, for example via a switch 15 in the electrical connection 16 between the motor-pump unit 8 and the accumulator 17 of the motor vehicle, so that all electrical consumers can be prevented immediately when the ignition key is turned start up. A delay of a few seconds is advisable to avoid a current spike.
  • damping elements 20 and 21 are shown enlarged in FIG.
  • the screw 22 screwed to the motor-pump unit 8 has no direct contact with the pump holder 7, but is only in contact with the damping element 20 or 21.
  • the damping elements 20 and 21 are still surrounded by a sleeve 23 or 24 for stabilization. The arrangement enables almost complete structure-borne noise insulation between the motor-pump unit 8 and the housing 1.

Abstract

L'invention concerne une direction hydraulique assistée pour automobiles, comprenant un mécanisme de direction pourvu d'un boîtier (1), d'un arbre de direction (4) et d'une crémaillère (3), d'un vérin hydraulique (2) relié à la crémaillère (3), d'une pompe et d'une soupape (6), chaque pièce individuelle constituant une unité. Non seulement il est possible, grâce à un tel système, de livrer au fabricant, au moment voulu, des ensembles montés, remplis de fluid de pression, et essayés, mais il est également facile de démonter la direction lorsque le véhicule a déjà été utilisé. La direction assistée selon l'invention est donc bon marché et peut être recyclée, ce qui est favorable à la protection de l'environnement. Les modes de réalisation mentionnés dans les sous-revendications concernent avant tout un système de montage amortissant les bruits, de la pompe ou de l'ensemble moteur/pompe (8) sur le boîter (1) de la direction assistée.The invention relates to a power-assisted hydraulic steering system for automobiles, comprising a steering mechanism provided with a housing (1), a steering shaft (4) and a rack (3), a hydraulic cylinder (2). ) connected to the rack (3), a pump and a valve (6), each individual part constituting a unit. Not only is it possible, thanks to such a system, to deliver to the manufacturer, when required, assemblies, filled with pressure fluid, and tested, but it is also easy to disassemble the steering when the vehicle has already been used. . The power steering according to the invention is therefore inexpensive and can be recycled, which is favorable to the protection of the environment. The embodiments mentioned in the sub-claims relate above all to a sound-damping mounting system of the pump or of the motor / pump assembly (8) on the housing (1) of the power steering.

Description

Hydraulische Servolenkung für KraftfahrzeugeHydraulic power steering for motor vehicles
Hydraulische Servolenkung für Kraftfahrzeuge, beste¬ hend aus einem Lenkgetriebe mit Gehäuse, Lenkwelle und Zahnstange, einem mit der Zahnstange verbundenen Hy¬ draulikzylinder, einer Pumpe und einem Lenkventil, das in Abhängigkeit von der Betätigung der Lenkung den Druckmittelfluß von der Pumpe zum Hydraulikzylinder steuert. Derartige Lenkungen werden in viele PK 's vor allem der Oberklasse eingebaut. Üblicherweise werden die Einzelteile am Fließband des Automobilherstellers nacheinander direkt in die Karosserie eingesetzt. Nach der Montage wird die Anlage mit Druckmittel befüllt, entlüftet und getestet. Wird hierbei ein Defekt fest¬ gestellt, müssen mit großem Aufwand die defekten Teile wieder ausgebaut und ersetzt werden, dies ist teuer ebenso wie auch die notwendige Lagerhaltung beim Fahr- zeugherεteller.Hydraulic power steering for motor vehicles, consisting of a steering gear with housing, steering shaft and rack, a hydraulic cylinder connected to the rack, a pump and a steering valve which controls the pressure medium flow from the pump to the hydraulic cylinder depending on the actuation of the steering. Such steering systems are installed in many PK's, especially in the luxury class. The individual parts are usually inserted one after the other directly into the body on the assembly line of the automobile manufacturer. After installation, the system is filled with pressure medium, vented and tested. If a defect is found here, the defective parts have to be removed and replaced with great effort, this is expensive, as is the necessary storage by the vehicle manufacturer.
Ein weiterer Nachteil der bekannten Servolenkungen ist, daß sie, wenn das Kraftfahrzeug verbraucht ist, nur mit hohem Zeit- und Kostenaufwand recycelbar sind. Auch dann müßten alle Elemente einzeln aus dem Fahr¬ zeug ausgebaut und zuvor die Anlage im Wagen entleert werden. Dieser Mangel wiegt im Hinblick auf die sich abzeichnenden gesetzlichen Vorschriften zur Wiederver¬ wertung alter Autos und ihrer Teile besonders schwer.Another disadvantage of the known power steering systems is that, when the motor vehicle is used up, they can only be recycled with great expenditure of time and money. Even then, all the elements would have to be removed individually from the vehicle and the system in the vehicle had to be emptied beforehand. This deficiency is particularly serious in view of the emerging legal regulations for the recycling of old cars and their parts.
Die Erfindung geht daher von der Aufgabe aus, eine komplett montierbare, getestete und befüllte hydrauli- sehe Servolenkung zu schaffen, die den heutigen Anfor¬ derungen an Industriefertigung, logistische Abläufe und Wiederverwertung genügt und zudem kostengünstig ist.The invention is therefore based on the task of producing a fully assembled, tested and filled hydraulic see power steering that meets today's requirements for industrial production, logistical processes and recycling and is also inexpensive.
Die Lösung der gestellten Aufgabe gelingt durch die im Anspruch 1 angegebenen Merkmale. Die Montage der kom¬ pletten Einheit, die außerhalb des Fahrzeugs befüllt, entlüftet und getestet wurde, kann ein Industrierobo¬ ter übernehmen und die Anlieferung erfolgt "Just in Time". Durch die kleinen Abstände zwischen Pumpe, Ven¬ til und Hydraulikzylinder werden nur kurze Schläuche benötigt und somit der Anteil an umweltbelastenden Elastomeren minimiert. Da das gesamte System auch als Einheit demontierbar ist, ist kostengünstiges Recycling möglich.The problem is solved by the features specified in claim 1. The assembly of the complete unit, which has been filled, vented and tested outside the vehicle, can be carried out by an industrial robot and delivery takes place "just in time". Due to the small distances between the pump, valve and hydraulic cylinder, only short hoses are required and the proportion of elastomers which pollute the environment is minimized. Since the entire system can also be dismantled as a unit, inexpensive recycling is possible.
Eine vorteilhafte Weiterbildung der Erfindung sieht vor, daß die Pumpe von einem Elektromotor angetrieben wird und daß letzterer fest mit der Pumpe verbunden ist. Im Gegensatz zu verbrennungsmotorgetriebenen Pum¬ pen, die von der Kurbelwelle aus über einen Riemen an¬ getrieben werden müssen und bei denen der Antriebsrie¬ men erst nach dem Einbau ins Fahrzeug befestigt werden kann, können elektromotorisch angetriebene Pumpen zu¬ sammen mit dem Motor in der Einheit verbaut werden. Nach dem Einbau der Einheit in das Kraftfahrzeug muß nur noch ein Kabelstecker zur Energieversorgung des Motors mit dem Bordnetz verbunden werden.An advantageous development of the invention provides that the pump is driven by an electric motor and that the latter is firmly connected to the pump. In contrast to pumps driven by internal combustion engines, which have to be driven from the crankshaft via a belt and in which the drive belt can only be attached after installation in the vehicle, pumps driven by an electric motor can be used together with the motor in the Unit are installed. After installing the unit in the motor vehicle, only a cable connector for powering the engine needs to be connected to the vehicle electrical system.
Zur Körperschalldämpfung ist vorgesehen, daß zwischen der Pumpe und den übrigen Teilen Dämpfungselemente an- geordnet sind. Diese Maßnahme verhindert, daß die beim Betrieb der Pumpe zwangsläufig auftretenden Schwingun¬ gen auf andere Elemente übertragen werden.For structure-borne noise damping, it is provided that damping elements are attached between the pump and the other parts. are ordered. This measure prevents the vibrations which inevitably occur during operation of the pump from being transmitted to other elements.
Besonders wirkungsvoll ist die Schalldämpfung, wenn die Dämpfungselernente im Bereich von Schwingungsknoten am Pumpengehäuse befestigt sind. In den Knoten treten nämlich die geringsten Schwingungsamplituden auf, da¬ her werden an diesen Stellen die Schwingungen ohnehin nur relativ schwach übertragen.Sound absorption is particularly effective if the damping elements are attached to the pump housing in the area of vibration nodes. The lowest vibration amplitudes occur in the nodes, so the vibrations are only transmitted relatively weakly at these points anyway.
Die Erfindung wird in folgenden an Hand des in den beiliegenden Zeichnungen dargestellen Beispiels erläu¬ tert. Dabei zeigtThe invention is explained below with reference to the example shown in the accompanying drawings. It shows
Fig. 1 eine Servolenkung, bei der alle Teile eine Einheit bilden undFig. 1 is a power steering, in which all parts form a unit and
Fig. 2 ein Dämpfungselement, vergrößert.Fig. 2 is a damping element, enlarged.
In Figur 1 ist die Servolenkungsanlage schematisch dargestellt. Im Gehäuse 1 befindet sich der Hydraulik¬ zylinder 2 und die Zahnstange 3. Die Lenkwelle 4 ragt aus einem Abschnitt 5 des Gehäuses 1 heraus. Fest mit dem Gehäuse 1 verbunden befindet sich in der gewählten Darstellung vor der Lenkwelle 4 das Lenkventil 6. Über den am Gehäuse 1 befestigten Pumpenhalter 7 ist das Motor-Pumpen-Aggregat 8 ebenfalls fest mit dem GehäuseIn Figure 1, the power steering system is shown schematically. The hydraulic cylinder 2 and the toothed rack 3 are located in the housing 1. The steering shaft 4 protrudes from a section 5 of the housing 1. In the selected illustration, the steering valve 6 is fixedly connected to the housing 1 in front of the steering shaft 4. The motor-pump unit 8 is also fixed to the housing via the pump holder 7 attached to the housing 1
1 verbunden.1 connected.
Vom Motor-Pumpen-Aggregat 8 und vom HydraulikzylinderFrom the motor-pump unit 8 and the hydraulic cylinder
2 führen hydraulische Leitungen 9 bis 12 zum Lenkven- til 6. Das Lenkventil 6 wird in Abhängigkeit von der Lenkungsbetätigung gesteuert und verbindet die Leitun¬ gen 9 bis 12 entsprechend.2 lead hydraulic lines 9 to 12 to the steering valve til 6. The steering valve 6 is controlled depending on the steering actuation and connects the lines 9 to 12 accordingly.
An der Lenkwelle 4 befindet sich ein nicht dargestell¬ ter Lenkwinkel- und/oder Lenkgeschwindigkeitssensor, dessen Ausgangssignal einer Steuereinheit, die vor¬ teilhafterweise in das Motor-Pumpen-Aggregat 8 inte¬ griert ist, zugeführt wird. Der Steuereinheit werden weitere Signale wie etwa ein der Fahrzeuggeschwindig¬ keit entsprechendes Signal zugeführt. Die Steuerein¬ heit steuert die Spannungversorgung des Pumpenmotors beispielsweise über einen Schalter 15 in der elektri¬ schen Verbindung 16 zwischen dem Motor-Pumpen-Aggregat 8 und dem Akkumulator 17 des Kraftfahrzeugs, so kann verhindert werden, daß alle elektrischen Verbraucher sofort beim Drehen des Zündschlüssels anlaufen. Zweck¬ mäßig ist etwa eine Verzögerung von einigen Sekunden, zur Vermeidung einer Stromspitze.On the steering shaft 4 there is a steering angle and / or steering speed sensor (not shown), the output signal of which is fed to a control unit, which is advantageously integrated into the motor-pump unit 8. The control unit is supplied with further signals, such as a signal corresponding to the vehicle speed. The control unit controls the voltage supply to the pump motor, for example via a switch 15 in the electrical connection 16 between the motor-pump unit 8 and the accumulator 17 of the motor vehicle, so that all electrical consumers can be prevented immediately when the ignition key is turned start up. A delay of a few seconds is advisable to avoid a current spike.
An den Verbindungsstellen 18 und 19 zwischen dem fest mit dem Gehäuse 1 verbundenen Pumpenhalter 7 und dem Motor-Pumpen-Aggregat 8 befinden sich Dämpfungselemen¬ te 20 bzw. 21. Eines davon ist in Figur 2 vergrößert dargestellt. Die mit dem Motor-Pumpen-Aggregat 8 ver¬ schraubte Schraube 22 hat keinen direkten Kontakt zum Pumpenhalter 7, sondern ist nur in Kontakt mit dem Dämpfungselernent 20 bzw. 21. In dem Ausführungsbei- spiel nach Figur 1 sind die Dämpfungselemente 20 und 21 noch von je einer Hülse 23 bzw. 24 zur Stabilisie¬ rung umgeben. Die Anordnung ermöglicht eine nahezu vollständige Körperschallisolierung zwischen Motor-Pumpen-Aggregat 8. nd Gehäuse 1. BezugszeichenlisteAt the connection points 18 and 19 between the pump holder 7, which is fixedly connected to the housing 1, and the motor-pump unit 8, there are damping elements 20 and 21, respectively. One of these is shown enlarged in FIG. The screw 22 screwed to the motor-pump unit 8 has no direct contact with the pump holder 7, but is only in contact with the damping element 20 or 21. In the exemplary embodiment according to FIG. 1, the damping elements 20 and 21 are still surrounded by a sleeve 23 or 24 for stabilization. The arrangement enables almost complete structure-borne noise insulation between the motor-pump unit 8 and the housing 1. Reference list
1 Gehäuse1 housing
2 Hydraulikzylinder2 hydraulic cylinders
3 Zahnstange3 racks
4 Lenkwelle4 steering shaft
5 Abschnitt5 section
6 Lenkventil6 steering valve
7 Pumpenhalter7 pump holder
8 Motor-Pumpen-Aggregat8 motor-pump unit
9 Hydraulische Leitung9 Hydraulic line
10 Hydraulische Leitung10 Hydraulic line
11 Hydraulische Leitung11 Hydraulic line
12 Hydraulische Leitung12 Hydraulic line
15 Schalter (Zündschlüssel)15 switches (ignition key)
16 elektrische Verbindung16 electrical connection
17 Akkumulator17 accumulator
18 Verbindungsstelle18 connection point
19 Verbindungsstelle19 connection point
20 Dämpfungselement20 damping element
21 Dämpfungselement21 damping element
22 Schraube22 screw
23 Hülse23 sleeve
24 Hülse 24 sleeve

Claims

Patentansprüche Claims
1. Hydraulische Servolenkung für Kraftfahrzeuge, beste¬ hend aus einem Lenkgetriebe mit Gehäuse, Lenkwelle und Zahnstange, einem mit der Zahnstange verbundenen Hydraulikzylinder, einer Pumpe und einem Lenkventil, das in Abhängigkeit von der Betätigungung der Lenkung den Druckmittelfluß von der Pumpe zum Hydraulikzylin¬ der steuert, dadurch g e k e n n z e i c h n e t , daß alle Einzelteile als eine Einheit miteinander verbunden sind.1. Hydraulic power steering for motor vehicles, consisting of a steering gear with housing, steering shaft and rack, a hydraulic cylinder connected to the rack, a pump and a steering valve which, depending on the actuation of the steering, the pressure medium flow from the pump to the hydraulic cylinder controls, characterized in that all the individual parts are connected as one unit.
2. Hydraulische Servolenkung nach Anspruch 1, dadurch g e k e n n z e i c h n e t , daß die Pumpe von einem Elektromotor angetrieben wird und daß letzterer fest mit der Pumpe verbunden ist.2. Hydraulic power steering according to claim 1, characterized in that the pump is driven by an electric motor and that the latter is firmly connected to the pump.
3. Hydraulische Servolenkung nach Anspruch 1 oder 2, da¬ durch g e k e n n z e i c h n e t , daß an den Ver¬ bindungsstellen (18,19), insbesondere zwischen der Pumpe bzw. dem Motor-Pumpen-Agregat (8) und dem Lenk¬ getriebe oder dem Ventilgehäuse oder einem damit ver¬ bundenen Pumpenhalter (7) Dämpfungselemente (20,21) zur Körperschallisolierung vorgesehen sind.3. Hydraulic power steering according to claim 1 or 2, da¬ characterized in that at the Ver¬ connection points (18,19), in particular between the pump or the motor-pump unit (8) and the steering gear or the valve housing or a pump holder (7) connected to it, damping elements (20, 21) are provided for structure-borne noise insulation.
4. Hydraulische Servolenkung nach Anspruch 3, dadurch g e k e n n z e i c h n e t , daß die Dämpfungsele¬ mente (20,21), d.h. die Verbindungsstellen (18,19), sich dort befinden, wo sich während des Normalbe¬ triebs der Pumpe ein Schwingungsknoten ausbildet. 4. Hydraulic power steering according to claim 3, characterized in that the damping elements (20, 21), i. E. the connection points (18, 19) are located where an oscillation node forms during normal operation of the pump.
EP92902441A 1991-01-26 1992-01-15 Power-assisted hydraulic steering for motor vehicles Ceased EP0522109A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4102264A DE4102264C2 (en) 1991-01-26 1991-01-26 Hydraulic power steering for motor vehicles
DE4102264 1991-01-26

Publications (1)

Publication Number Publication Date
EP0522109A1 true EP0522109A1 (en) 1993-01-13

Family

ID=6423738

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92902441A Ceased EP0522109A1 (en) 1991-01-26 1992-01-15 Power-assisted hydraulic steering for motor vehicles

Country Status (5)

Country Link
US (1) US5307894A (en)
EP (1) EP0522109A1 (en)
JP (1) JPH05505370A (en)
DE (1) DE4102264C2 (en)
WO (1) WO1992012887A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7255698B2 (en) 1994-03-28 2007-08-14 Warsaw Orthopedic, Inc. Apparatus and method for anterior spinal stabilization

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4303674A1 (en) * 1993-02-09 1994-08-11 Teves Gmbh Alfred Mounting for an engine pump assembly
EP0779204B1 (en) * 1995-12-11 1999-11-03 Volkswagen Aktiengesellschaft Subframe comprising the cast light-alloy housing of a rack-and-pinion steering
DE19715808A1 (en) * 1997-04-16 1998-10-22 Bayerische Motoren Werke Ag Rack-type hydraulic automotive steering gear
US6419042B1 (en) * 2000-10-03 2002-07-16 Trw Inc. Integrated electric power hydraulic steering system
JP2004353786A (en) * 2003-05-29 2004-12-16 Favess Co Ltd Elastic support structure and power steering device using the same
JP2006205792A (en) * 2005-01-25 2006-08-10 Showa Corp Power steering assisting device
DE202005006414U1 (en) * 2005-04-21 2005-08-04 Trw Automotive Gmbh Motor pump unit for servo steering of vehicle has external tank, ECU fitted axially or radially to the unit housing and ECU plugs arranged radially or axially
US7282875B2 (en) * 2005-08-31 2007-10-16 Caterpillar Inc. System and method for electric motor control
JP5920190B2 (en) * 2012-11-30 2016-05-18 株式会社デンソー Heat exchanger fixing structure
DE102014117301A1 (en) * 2014-11-26 2016-06-02 Robert Bosch Automotive Steering Gmbh STEERING SYSTEM FOR A MOTOR VEHICLE

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2931541C2 (en) * 1979-08-03 1986-09-11 O & K Orenstein & Koppel Ag, 1000 Berlin Switchable hydraulic steering aid for a vehicle driven by an electric motor
US4351228A (en) * 1980-07-02 1982-09-28 General Motors Corporation Power assist rack and pinion steering gear
US4409789A (en) * 1980-11-03 1983-10-18 Clark Equipment Company Power steering system
JPS58156857A (en) * 1982-03-15 1983-09-17 Tokai T R W Kk Rotation detector
GB2124935B (en) * 1982-07-21 1985-08-14 Cam Gears Ltd A piston and cylinder assembly a power assisted steering gear which includes such an assembly and a method of forming a piston for such an assembly
JPS60201194A (en) * 1984-03-23 1985-10-11 トヨタ自動車株式会社 Hose for fluid pressure
JPS6192960A (en) * 1984-10-11 1986-05-10 Honda Motor Co Ltd Motor-driven power steering device
DE3603742A1 (en) * 1985-02-06 1986-08-14 Aisin Seiki K.K., Kariya, Aichi HYDRAULIC PUMP ASSEMBLY IN CONNECTION WITH A STORAGE
GB2183778B (en) * 1985-12-06 1989-10-11 Trw Cam Gears Ltd A rack and pinion steering gear assembly
US4673051A (en) * 1986-03-10 1987-06-16 General Motors Corporation Power steering gear with two-way check valve
US4742882A (en) * 1986-03-12 1988-05-10 Honda Giken Kogyo Kabushiki Kaisha Motor-driven power steering device
US4821828A (en) * 1987-06-08 1989-04-18 General Motors Corporation Dynamic absorber for motor vehicle
DE3726979A1 (en) * 1987-08-13 1989-02-23 Opel Adam Ag HYDRAULIC UNIT FOR A MOTOR VEHICLE
DE3743061C1 (en) * 1987-12-18 1989-04-13 Opel Adam Ag Steering boost for motor vehicles
US5141069A (en) * 1988-09-13 1992-08-25 Aisin Seiki Kabushiki Kaisha Steering mechanism with toe-in control
JPH0275375U (en) * 1988-11-30 1990-06-08
US5096153A (en) * 1990-10-19 1992-03-17 Onan Corporation Shock and vibration mount

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9212887A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7255698B2 (en) 1994-03-28 2007-08-14 Warsaw Orthopedic, Inc. Apparatus and method for anterior spinal stabilization

Also Published As

Publication number Publication date
US5307894A (en) 1994-05-03
WO1992012887A1 (en) 1992-08-06
DE4102264A1 (en) 1992-07-30
DE4102264C2 (en) 2003-03-27
JPH05505370A (en) 1993-08-12

Similar Documents

Publication Publication Date Title
EP0671999B1 (en) Noise-reduced pumping set, in particular for regulated brake systems
DE69727171T2 (en) Motor-driven hydraulic pump and clutch used in it
EP0522109A1 (en) Power-assisted hydraulic steering for motor vehicles
DE102015104246A1 (en) Actuating device for a motor vehicle brake
DE69913065T2 (en) Electrically driven pump
DE10148059A1 (en) Camshaft adjusting device for an internal combustion engine
DE102010049999A1 (en) Electric steering assist device for arranging steering column and steering pinion of motor car, has components of electric motor separated from each other, and electric motor and steering control unit arranged axially to each other
DE10114274B4 (en) Engine with soundproof cover for an injection device
EP1653123A2 (en) Drive system
DE102011079157A1 (en) Gear box device e.g. electrical axle, for passenger car, has end shield screwed with cooling ring and housing via two sets of screw connections that are arranged on two pitch circle diameter regions, respectively
DE3611932A1 (en) HYDRAULIC BRAKE SYSTEM
DE102005015483A1 (en) Interconnecting feeder line for power unit of motor vehicle, comprises of fluid lines and conductors wrapped in plastic coating and embedded in a section of feeder line
DE19959022C1 (en) Drive unit for hydraulic pressure source e.g. for automobile servo steering system, has electric motor enclosed by separate motor hood anchored to flange plate of pressure source
EP0460464A2 (en) Vehicle with a fan for the combustion motor cooling system and with a hydraulic power steering system of open centre type
DE19936966A1 (en) Pre-lubricating system for internal-combustion engines contains oil filter and oil cooler
DE102004015280A1 (en) Power steering motor with a noise damping piston assembly
EP0826575B1 (en) Device for an electrohydraulic power supply for a power steering system in a motor vehicle
DE102020215519A1 (en) Hydraulic block for a hydraulic externally powered vehicle brake system
DE102009050470A1 (en) Kit set for manufacturing motor vehicle, has front end modules retaining transversely and longitudinally integrated internal-combustion engine and main body structure, and connected with main body structure
DE10159679A1 (en) Ultrasonic sensor unit and manufacturing method
DE19505695A1 (en) Transverse drive for underground or rapid transit railway vehicles
EP0583645A2 (en) Modulator assembly for a hydraulic brake system of a motor vehicle
DE19538334A1 (en) Minimum-pressure servo pump e.g. for vehicle diesel engine
EP3762607B1 (en) Pump apparatus for a system housing in a vehicle
EP1342912A2 (en) Fuel supply system for an internal combustion engine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19920804

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR GB IT

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ITT AUTOMOTIVE EUROPE GMBH

17Q First examination report despatched

Effective date: 19931119

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19950127