WO2003087576A1 - Pompe hydraulique, notamment pour un système de direction assistée - Google Patents

Pompe hydraulique, notamment pour un système de direction assistée Download PDF

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Publication number
WO2003087576A1
WO2003087576A1 PCT/EP2003/003637 EP0303637W WO03087576A1 WO 2003087576 A1 WO2003087576 A1 WO 2003087576A1 EP 0303637 W EP0303637 W EP 0303637W WO 03087576 A1 WO03087576 A1 WO 03087576A1
Authority
WO
WIPO (PCT)
Prior art keywords
hydraulic pump
pump according
housing
mounting plate
motor
Prior art date
Application number
PCT/EP2003/003637
Other languages
German (de)
English (en)
Inventor
Dieter Fehlings
Original Assignee
Trw Automotive 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 Trw Automotive Gmbh filed Critical Trw Automotive Gmbh
Priority to AU2003227576A priority Critical patent/AU2003227576A1/en
Publication of WO2003087576A1 publication Critical patent/WO2003087576A1/fr

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
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/02—Arrangements of pumps or compressors, or control devices therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/02—Pumping installations or systems having reservoirs
    • F04B23/021—Pumping installations or systems having reservoirs the pump being immersed in the reservoir
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/26—Supply reservoir or sump assemblies

Definitions

  • Hydraulic pump in particular for a power steering system
  • the invention relates to a hydraulic pump, in particular for a power steering system.
  • Sealing housing encapsulated, which in turn is partially arranged within a fluid tank.
  • the object of the invention is to provide a hydraulic pump which is characterized by a simple and inexpensive construction.
  • a hydraulic pump for a power steering system with an outer housing, a pump housing and a motor housing, the outer housing serving as a reservoir for the hydraulic fluid to be pumped and the pump housing and the motor housing being arranged inside the outer housing so that they are surrounded by hydraulic fluid during operation.
  • This structure is based on the knowledge that the sealing housing that has been used so far is not required. In this way, components can be saved, the cooling problems for the drive motor of the pump are reduced and the assembly is easier.
  • the unit consisting of pump and drive motor is so compact that it is completely sunk in Hydraulic fluid can be arranged so that there is a very low profile.
  • an internal rotor electric motor is arranged in the motor housing.
  • An internal rotor electric motor is very compact, which is advantageous.
  • the motor housing is preferably attached to a mounting plate, which in turn is attached to the outer housing.
  • the mounting plate can advantageously combine several functions, namely a cooling function for the drive motor and a holding and cooling function for the control electronics of the electric motor.
  • the mounting plate can also serve as a holder for a plug for connecting the control electronics.
  • the mounting plate is preferably a cast part, in particular made of metal. This results in good heat conduction and high strength.
  • a filler neck can be arranged in the mounting plate, which has an annular cross-section at the level of the mounting plate. In this way, there is a large cross-section for filling with the hydraulic fluid with small dimensions in the radial direction.
  • the filler neck consists at least partially of a transparent material so that the fill level of the outer housing can always be checked without a separate sight glass.
  • Motor housing a centering design may be provided, for example a circumferential centering groove or a circumferential centering ring. The same applies to the mounting surface between the motor housing and the pump housing. This prevents misalignment.
  • a pressure connection is preferably formed on the mounting plate, to which a pressure hose is connected, which has an elastomer component. The elasticity of the pressure hose reduces pressure pulsations in the hydraulic fluid.
  • Pump housing and the motor housing are provided with several external fastening tabs so that they can be screwed together over a large radius. This increases the rigidity and precision of the
  • the pump has an intake port which is arranged on its underside. In this way, the hydraulic fluid is drawn in as deep as possible in the outer housing, which reduces the risk of sucking in air in extreme operating conditions.
  • the outer housing has a plurality of symmetrically arranged fastening eyes, so that it can be mounted in several orientations. This makes it possible to mount the hydraulic pump in several orientations in the vehicle without the
  • FIG. 1 is a schematic, partially sectioned side view of a hydraulic pump according to the invention.
  • FIG. 2 shows the hydraulic pump of Figure 1 in a schematic plan view.
  • the hydraulic pump contains an outer housing 10, which serves as a reservoir for a hydraulic fluid 12.
  • a pump housing 14 and a motor housing 16 are arranged in the interior of the outer housing 10.
  • An internal rotor electric motor is arranged in the motor housing 16 and can drive a hydraulic pump arranged in the pump housing 14.
  • the pump housing 14 and the motor housing 16 are each provided on their mutually facing sides with a plurality of external fastening tabs 18, through which a screw 20 extends in each case.
  • the use of external fastening tabs makes it possible to arrange the screws 20 on the largest possible radius, so that the screw connection has a high degree of stability.
  • a centering design (not shown) is also provided, which consists, for example, of a circumferential ring on the end face of the pump housing 14 and a circumferential, complementary groove on the end face of the motor housing 16. This ensures that the motor housing and the pump housing are securely mounted relative to each other without misalignment.
  • the motor housing 16 is attached to a mounting plate 22 which is a cast metal part. A centering design can also be used between the motor housing 16 and the mounting plate 22.
  • the mounting plate 22 is in turn attached to the outer housing 10 so that the unit consisting of the pump housing 14 and the motor housing 16 is fixedly attached to the inside of the outer housing 10.
  • the mounting plate 22 also serves to fasten plugs 24, by means of which the electric motor can be connected to a power supply and a control circuit. Control electronics for the electric motor are also arranged in the mounting plate 22, here symbolized by the "ECU” box. Since the mounting plate 22 is made of metal and thus has good heat conduction, it also serves as a cooling element both for the control electronics of the electric motor and, by heat conduction from the motor housing 16, for the electric motor.
  • a filler neck 26 is attached to the mounting plate 22.
  • this consists of a transparent material, for example a plastic hose, so that the filling level of the hydraulic fluid is clearly visible.
  • the filler neck In the area of the passage through the mounting plate 22, the filler neck has an annular section-shaped cross section (see FIG. 2), which nevertheless has a high flow cross section with a comparatively small dimension in the radial direction. This makes it possible to fill the outer housing 10 with a large volume of hydraulic fluid in a very short time when it is filled for the first time.
  • a funnel-like transition section is provided between the cross section of the filler neck 26 in the form of a ring section and the section of circular cross section consisting of a plastic tube.
  • a pressure connection 28 is provided in the mounting plate 22, for which a bore is produced in the mounting plate 22 by machining.
  • the pressure connection 28 can be formed at an advantageous location on the mounting plate 22. In this way, a single, standardized mounting plate can be used, in which, depending on the vehicle type, the pressure connection is drilled elsewhere.
  • a return connection 32 is arranged, by means of which the returning hydraulic fluid is returned to the hydraulic fluid supply.
  • an intake port 34 is provided, which is arranged on the underside of the pump housing 14. Since the suction port 34 is arranged on the one hand in the region of the bottom of the outer housing 10 and on the other hand is at a comparatively large distance from the return connection 32, the pump is calmed down with ease.
  • a ventilation opening 36 In the upper area of the pump housing 14 there is a ventilation opening 36 which ensures that any air that may be sucked in quickly leaves the pump housing again.
  • the mounting plate 22 is provided with four external fastening eyes 38, which are arranged symmetrically. In this way, the hydraulic pump can be mounted in four different orientations in the vehicle without having to make any design changes.
  • the construction described has the following advantages:
  • the pump, together with its drive motor, is completely surrounded by hydraulic fluid (with the exception of the side of the mounting plate 22). This serves both for cooling and for noise reduction. Since the hydraulic fluid completely fills the interior of the outer housing 10 and extends into the filler neck 26, it is reliably ensured in all operating positions and operating states that no air is sucked in. Since the motor together with the pump housing is arranged completely in the outer housing 10, the overall height is very low. Finally, there is little manufacturing effort, since the hydraulic pump consists of comparatively few individual parts. This also makes it possible to dispense with complicated cooling and sealing devices.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

L'invention concerne une pompe hydraulique pour un système de direction assistée, cette pompe comprenant un boîtier extérieur (10), un boîtier de pompe (14) et un carter-moteur (16). Le boîtier extérieur (10) sert de réservoir pour le fluide hydraulique à pomper. Le boîtier de pompe (14) et le carter-moteur (16) sont disposés à l'intérieur du boîtier extérieur (10), de sorte qu'en fonctionnement, ils sont entourés de fluide hydraulique (12).
PCT/EP2003/003637 2002-04-16 2003-04-08 Pompe hydraulique, notamment pour un système de direction assistée WO2003087576A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003227576A AU2003227576A1 (en) 2002-04-16 2003-04-08 Hydraulic pump, particularly for a power-assisted steering system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20205936U DE20205936U1 (de) 2002-04-16 2002-04-16 Hydraulikpumpe, insbesondere für ein Servolenksystem
DE20205936.7 2002-04-16

Publications (1)

Publication Number Publication Date
WO2003087576A1 true WO2003087576A1 (fr) 2003-10-23

Family

ID=7970106

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/003637 WO2003087576A1 (fr) 2002-04-16 2003-04-08 Pompe hydraulique, notamment pour un système de direction assistée

Country Status (3)

Country Link
AU (1) AU2003227576A1 (fr)
DE (1) DE20205936U1 (fr)
WO (1) WO2003087576A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1647466A1 (fr) * 2004-10-13 2006-04-19 TRW Automotive Electronics & Components GmbH & Co. KG Système hydraulique pour fournir une force auxiliaire dans un dispositif pour véhicule
WO2006103199A1 (fr) * 2005-04-01 2006-10-05 Paul-Heinz Wagner Ensemble hydraulique
WO2009030793A1 (fr) * 2007-08-27 2009-03-12 Romeral Cabeza, Angel Mécanisme multiplicateur de pression

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10256189A1 (de) * 2002-12-02 2004-06-17 Cornelius Peter Hydraulisches Aggregat
DE20302534U1 (de) 2003-02-17 2003-06-18 TRW Fahrwerksysteme GmbH & Co. KG, 40547 Düsseldorf Motor-Pumpen-Aggregat
DE102004003931B4 (de) * 2004-01-26 2015-06-18 Volkswagen Ag Hydraulikkreislauf bzw. Verfahren zum Steuern eines Druckes und/oder eines Volumenstromes eines Hydraulikmediums in einem Hydraulikkreislauf, insbesondere für ein Doppelkupplungsgetriebe eines Kraftfahrzeuges
DE102005045403A1 (de) * 2005-09-23 2007-04-12 Robert Bosch Gmbh Drucksystem mit Druckspeicher und Pumpe
DE102007053263A1 (de) * 2007-11-08 2009-05-14 Trw Automotive Gmbh Elektrohydraulisches Fahrzeuglenksystem
CN103603835A (zh) * 2013-11-19 2014-02-26 阜新德尔汽车部件股份有限公司 电液动力转向系统用液压油壶
CN106015167A (zh) * 2016-07-13 2016-10-12 哈威油液压技术（上海）有限公司 齿轮泵液压泵站
CN106015200A (zh) * 2016-07-13 2016-10-12 哈威油液压技术（上海）有限公司 柱塞式紧凑液压泵站

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4594056A (en) * 1979-09-11 1986-06-10 Heilmeier & Weinlein, Fabrik Fur Oel-Hydraulik Gmbh & Co., Kg Hydraulic pump unit
US5596970A (en) * 1996-03-28 1997-01-28 Ford Motor Company Fuel pump for an automotive fuel delivery system
US6132184A (en) * 1998-11-05 2000-10-17 Ford Motor Company Reservoir apparatus for an electronically controlled electric pump
US6290474B1 (en) * 1998-11-25 2001-09-18 Still, Gmbh Machine hydraulic system
DE10022174A1 (de) * 2000-05-06 2001-11-08 Kroell Hydrotechnik Kg Pumpenaggregat

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19859340C2 (de) 1998-12-22 2003-02-06 Siemens Ag Elektrohydraulische Einheit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4594056A (en) * 1979-09-11 1986-06-10 Heilmeier & Weinlein, Fabrik Fur Oel-Hydraulik Gmbh & Co., Kg Hydraulic pump unit
US5596970A (en) * 1996-03-28 1997-01-28 Ford Motor Company Fuel pump for an automotive fuel delivery system
US6132184A (en) * 1998-11-05 2000-10-17 Ford Motor Company Reservoir apparatus for an electronically controlled electric pump
US6290474B1 (en) * 1998-11-25 2001-09-18 Still, Gmbh Machine hydraulic system
DE10022174A1 (de) * 2000-05-06 2001-11-08 Kroell Hydrotechnik Kg Pumpenaggregat

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1647466A1 (fr) * 2004-10-13 2006-04-19 TRW Automotive Electronics & Components GmbH & Co. KG Système hydraulique pour fournir une force auxiliaire dans un dispositif pour véhicule
JP2006115686A (ja) * 2004-10-13 2006-04-27 Trw Automot Electronics & Components Gmbh & Co Kg 自動車装置のための補助力を提供するための液圧装置
WO2006103199A1 (fr) * 2005-04-01 2006-10-05 Paul-Heinz Wagner Ensemble hydraulique
JP2008534850A (ja) * 2005-04-01 2008-08-28 ワグナー ポール−ハインツ 油圧ユニット
EP2385252A1 (fr) * 2005-04-01 2011-11-09 Wagner Vermögensverwaltungs-GmbH & Co. KG Agrégat hydrophile
US8220380B2 (en) 2005-04-01 2012-07-17 Wagner Vermögensverwaltungs-GmbH & Co. KG Hydraulic unit
WO2009030793A1 (fr) * 2007-08-27 2009-03-12 Romeral Cabeza, Angel Mécanisme multiplicateur de pression

Also Published As

Publication number Publication date
DE20205936U1 (de) 2002-08-22
AU2003227576A1 (en) 2003-10-27

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