WO2009149682A2 - Motor-pump module - Google Patents
Motor-pump module Download PDFInfo
- Publication number
- WO2009149682A2 WO2009149682A2 PCT/DE2009/000686 DE2009000686W WO2009149682A2 WO 2009149682 A2 WO2009149682 A2 WO 2009149682A2 DE 2009000686 W DE2009000686 W DE 2009000686W WO 2009149682 A2 WO2009149682 A2 WO 2009149682A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pump
- motor
- module according
- pump module
- electric motor
- Prior art date
Links
Classifications
-
- 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
- F04C11/008—Enclosed motor pump units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
-
- 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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
- F04C2/086—Carter
-
- 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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
-
- 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
- F04C2240/00—Components
- F04C2240/30—Casings or housings
Definitions
- the invention relates to a motor-pump module with a driven by an electric motor positive displacement pump, which comprises a pump housing.
- the object of the invention is to provide a motor-pump module according to the preamble of claim 1, which is simple in construction and inexpensive to produce.
- a motor-pump module with a driven by an electric motor positive displacement pump which includes a pump housing, characterized in that the electric motor with a first end face dirt-tight is attached to the pump housing.
- the electric motor is encapsulated only against dirt, but not against oil.
- the dirt-tight encapsulation prevents the function of the electric motor from being adversely affected by metallic, in particular magnetic, abrasion, so that it can be arranged in the wet region of a motor vehicle engine, in particular in a transmission passage chamber.
- a preferred embodiment of the motor-pump module is characterized in that the electric motor with a second end face dirt-tight to a body-mounted housing part of a motor vehicle is mounted.
- the body-mounted housing part is preferably a transmission wall, a gear cover or an oil pan of the motor vehicle.
- the motor-pump module according to the invention is preferably fastened to the body-mounted housing part by means of screw connection elements.
- a simple closure cap for example made of plastic, can be attached to the second end face without the need to alter the design of the electric motor.
- a motor-pump module with a driven by an electric motor positive displacement pump which includes a pump housing, in particular in a previously described motor-pump module, that the pump housing made of a different material than at least one Displacer of the positive displacement pump is formed.
- the displacement body is preferably formed from a steel material.
- the other material is preferably a softer material that is less expensive to process or process.
- Another preferred embodiment of the motor-pump module is characterized in that the pump housing is formed of a plastic material.
- the plastic material is preferably a duroplastic plastic material.
- the duroplastic plastic material is preferably so-called bulk molding compounds.
- the pump housing is preferably designed as an injection molded part.
- the motor-pump module is characterized in that the pump housing is formed of an aluminum material.
- the pump housing is preferably designed as a die-cast aluminum part.
- a further preferred embodiment of the motor-pump module is characterized in that the pump housing comprises a pump flange which is fastened by means of screw connections to the electric motor.
- the pump flange is preferably provided with a recess, preferably a depression, for at least one displacement body of the positive displacement pump.
- the motor-pump module is characterized in that the pump flange is closed on the side facing away from the electric motor by a pump cover.
- the pump cover is preferably used to close the recess with the displacer.
- the pump flange and the pump cover together represent the pump housing.
- Another preferred embodiment of the motor-pump module is characterized in that the electric motor is designed brushless.
- Brushless electric motors can basically be arranged in the transmission passage. Due to the dirt-tight encapsulation of the electric motor is prevented in a simple manner that the function of the electric motor is affected by metallic, especially magnetic abrasion. Oil-tight encapsulation is not required.
- the positive displacement pump is designed as a gear pump or internal gear pump or gerotor pump.
- the positive displacement pump can also be designed as a vane pump, or spindle pump.
- a further preferred embodiment of the motor-pump module is characterized in that the positive displacement pump comprises an outer displacement body which is rotatably mounted in a bearing ring.
- the outer displacement body is preferably an outer wheel with an inner toothing. In the internal toothing of the outer wheel engages, for example, an external toothing of a driven inner wheel.
- the bearing ring is formed of a material with the same or very similar thermal expansion as the displacement body.
- both the bearing ring and the displacement body are formed from a steel material.
- Another preferred embodiment of the motor-pump module is characterized in that the bearing ring has the same or slightly greater height as the displacement body.
- the height is the extent of the displacer or bearing ring in the axial direction.
- Another preferred embodiment of the motor-pump module is characterized in that a compensation plate rests against the bearing ring.
- the compensation plate is acted upon via a pressure field with the respective pump pressure.
- the compensation plate bends in the direction of the displacement body and thus minimizes an axial gap. As a result, the efficiency of the positive displacement pump can be increased.
- the outer ring according to the invention is not used as a radial bearing, but only as a support for the compensation plate to avoid the Axialspaltver notedrung by different thermal expansions of Pumpenverdränger and housing parts as described above.
- Another preferred embodiment of the motor-pump module is characterized in that the positive displacement pump is mounted directly on a motor wool of the electric motor. As a result, the structure of the positive displacement pump is further simplified.
- the motor-pump module 1 shows a motor-pump module 1 according to an embodiment of the invention is shown in longitudinal section.
- the motor-pump module 1 comprises a positive displacement pump 2, which is designed as an internal gear pump or gerotor pump.
- the motor pump module 1 according to the invention is preferably used in motor vehicles with hydraulically controlled automatic transmissions and start / stop functionality. In this case, the motor-pump module 1 according to the invention serves to keep the hydraulic control in readiness in the stop phases.
- the displacement pump 2 is driven by an electric motor 4, which is preferably designed as a brushless electric motor.
- Brushless electric motors can basically be used in the transmission passage of the motor vehicle.
- conventional electric motors are either placed outside the transmission passage or oil-sealed.
- the electric motor 4 is encapsulated by means of existing assemblies only against dirt, but not against oil.
- the positive displacement pump 2 is equipped with a plastic housing or an aluminum housing, whereby the functional reliability of the positive displacement pump is ensured by simple inserts of technologically sophisticated geometries.
- the motor shaft 5 is rotatably connected by means of a coupling 8, in particular a two-flat, with a first displacement body 11 of the positive displacement pump 2.
- the first displacement body 11 cooperates with a second displacement body 12 to suck in a hydraulic medium, in particular oil, in a working space of the positive displacement pump 2 and to pressurize it.
- the first displacement body 11 is designed as a pinion or internal gear, which has an external toothing, which is in engagement with an internal toothing of the second displacement body 12, which is designed as an external gear or ring gear.
- the second displacement body 12 is arranged eccentrically to the first displacement body 11. Due to the interaction between the two displacement bodies 11, 12, a suction and a pressure chamber is created
- the two displacement bodies 11, 12 are arranged in a recess 14 of a pump flange 15.
- the recess 14 of the pump flange 15 is closed by a pump cover 16.
- the pump cover 16 and the pump flange 15 together represent the pump housing 18 of the positive displacement pump 2.
- the second displacement body 12 is rotatably supported in the recess 14 of the pump flange 15 by means of a bearing ring 20.
- the positive displacement pump 2 is mounted directly on the motor shaft 5.
- the two displacement body 11, 12 and the bearing ring 20 are made of a material with the same or similar thermal expansion, in particular a steel material.
- the displacement body 11, 12 and the bearing ring 20 have substantially the same height, that is, the same extent in the axial direction.
- the term axial direction refers to the axis of rotation of the motor shaft 5.
- Axial means in the direction or parallel to the axis of rotation of the motor shaft fifth
- a compensation plate 22 On the bearing ring 20 is located on a compensation plate 22, which has substantially the shape of a circular disc with openings that allow the targeted passage of hydraulic medium. Radially outwardly, the compensation plate 22 is sealed by a pressure field seal 24 disposed in a groove of the pump cover 16 between the pump cover 16 and the pump flange 15.
- the compensation plate 22 is acted upon radially within the pressure field seal 24, which is designed for example as an O-ring, via a pressure field with the respective pump pressure.
- the compensation plate 22 which is also referred to as axial disk, bends in the direction of the displacer 11, 12 and thus minimizes a constructive axial gap. As a result, the efficiency of the positive displacement pump 2 is increased.
- the pump cover 16 is fastened to the electric motor 4 together with the pump flange 15 by means of screw connection elements 31, 32.
- the pump flange 15 is designed so that a first end face 41 of the electric motor 4, which is application-dependent at its two end faces open, closed by the pump flange 15 dirt-tight.
- a second end face 42 of the electric motor 4 is sealed dirt-tight by appropriate design of a mounting surface, which is provided on a body-mounted housing part 50.
- the body-mounted housing part 50 is preferably a transmission housing wall.
- the attachment of the motor-pump module 1 to the body is made by further screw connection elements (not shown), which are screwed into the body-mounted housing part 50.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
- Compressor (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112009002109T DE112009002109A5 (en) | 2008-06-09 | 2009-05-18 | ENGINE PUMP MODULE |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008027444.5 | 2008-06-09 | ||
DE102008027444 | 2008-06-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2009149682A2 true WO2009149682A2 (en) | 2009-12-17 |
WO2009149682A3 WO2009149682A3 (en) | 2010-07-22 |
Family
ID=41268994
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2009/000686 WO2009149682A2 (en) | 2008-06-09 | 2009-05-18 | Motor-pump module |
Country Status (2)
Country | Link |
---|---|
DE (2) | DE112009002109A5 (en) |
WO (1) | WO2009149682A2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104863845A (en) * | 2014-02-21 | 2015-08-26 | Lg伊诺特有限公司 | Electric pump |
WO2017140311A1 (en) * | 2016-02-15 | 2017-08-24 | Bühler Motor GmbH | Pump drive for conveying a reduction medium for motor vehicle exhaust systems, modular motor and pump family for forming different pump drives with multiple electric motors of this type |
US11725653B2 (en) | 2020-03-12 | 2023-08-15 | Schwäbische Hüttenwerke Automotive GmbH | Pump insert and pump array comprising such a pump insert |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012222112A1 (en) | 2011-12-13 | 2013-06-13 | Schaeffler Technologies AG & Co. KG | Powertrain with a dual-clutch transmission and method for its control |
KR102118028B1 (en) * | 2013-11-19 | 2020-06-02 | 엘지이노텍 주식회사 | Electric pump |
DE102015010846B4 (en) * | 2015-08-19 | 2017-04-13 | Nidec Gpm Gmbh | Electric motor driven vacuum pump |
ITUB201655126U1 (en) * | 2016-03-02 | 2017-09-02 | Fluid O Tech Srl | SET OF ELASTIC CONTAINMENT FOR A PUMP. |
DE102022127805A1 (en) | 2022-10-21 | 2024-05-02 | Schaeffler Technologies AG & Co. KG | Electric pump actuator |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002048060A (en) * | 2000-07-31 | 2002-02-15 | Zexel Valeo Climate Control Corp | Hybrid compressor |
DE10311037A1 (en) * | 2002-03-13 | 2003-11-27 | Aisin Seiki | Electric oil pump device |
EP1482175A2 (en) * | 2003-05-28 | 2004-12-01 | Aisin Seiki Kabushiki Kaisha | Electric powered pump |
EP1580431A1 (en) * | 2002-12-24 | 2005-09-28 | Koyo Seiko Co., Ltd. | Electric internal gear pump |
DE102007000774A1 (en) * | 2006-09-27 | 2008-05-08 | Aisin Seiki Kabushiki Kaisha, Kariya | Electrically operated hydraulic pump |
-
2009
- 2009-05-18 DE DE112009002109T patent/DE112009002109A5/en not_active Withdrawn
- 2009-05-18 DE DE102009021890A patent/DE102009021890A1/en not_active Withdrawn
- 2009-05-18 WO PCT/DE2009/000686 patent/WO2009149682A2/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002048060A (en) * | 2000-07-31 | 2002-02-15 | Zexel Valeo Climate Control Corp | Hybrid compressor |
DE10311037A1 (en) * | 2002-03-13 | 2003-11-27 | Aisin Seiki | Electric oil pump device |
EP1580431A1 (en) * | 2002-12-24 | 2005-09-28 | Koyo Seiko Co., Ltd. | Electric internal gear pump |
EP1482175A2 (en) * | 2003-05-28 | 2004-12-01 | Aisin Seiki Kabushiki Kaisha | Electric powered pump |
DE102007000774A1 (en) * | 2006-09-27 | 2008-05-08 | Aisin Seiki Kabushiki Kaisha, Kariya | Electrically operated hydraulic pump |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104863845A (en) * | 2014-02-21 | 2015-08-26 | Lg伊诺特有限公司 | Electric pump |
EP2916006A1 (en) * | 2014-02-21 | 2015-09-09 | LG Innotek Co., Ltd. | Electric pump |
US10006458B2 (en) | 2014-02-21 | 2018-06-26 | Lg Innotek Co., Ltd. | Electric gear pump with specific proportions for the fluid passages |
US10215173B2 (en) | 2014-02-21 | 2019-02-26 | Lg Innotek Co., Ltd. | Electric gear pump with specific proportions for the fluid passages |
WO2017140311A1 (en) * | 2016-02-15 | 2017-08-24 | Bühler Motor GmbH | Pump drive for conveying a reduction medium for motor vehicle exhaust systems, modular motor and pump family for forming different pump drives with multiple electric motors of this type |
US10920771B2 (en) | 2016-02-15 | 2021-02-16 | Bühler Motor GmbH | Pump drive for conveying a reducing agent for motor vehicle exhaust gas systems, modular motor and pump family for forming different pump drives with several such electric motors |
US11725653B2 (en) | 2020-03-12 | 2023-08-15 | Schwäbische Hüttenwerke Automotive GmbH | Pump insert and pump array comprising such a pump insert |
Also Published As
Publication number | Publication date |
---|---|
DE112009002109A5 (en) | 2011-05-26 |
DE102009021890A1 (en) | 2009-12-10 |
WO2009149682A3 (en) | 2010-07-22 |
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