EP2737213A2 - Getriebepumpe - Google Patents
GetriebepumpeInfo
- Publication number
- EP2737213A2 EP2737213A2 EP12728484.2A EP12728484A EP2737213A2 EP 2737213 A2 EP2737213 A2 EP 2737213A2 EP 12728484 A EP12728484 A EP 12728484A EP 2737213 A2 EP2737213 A2 EP 2737213A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- gear
- housing
- driving
- case
- 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.)
- Granted
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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
-
- 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
- F04C2/101—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 with a crescent-shaped filler element, located between the inner and outer intermeshing members
-
- 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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
- F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
- F04C15/0073—Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft
-
- 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
- F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
- F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
Definitions
- the invention relates to a gear pump, in particular a gear oil pump of an automatic transmission of a motor vehicle according to the preamble of patent claim 1.
- Gear pumps in particular gear oil pumps are known from the prior art, which are driven by the internal combustion engine and / or an electric machine of the vehicle.
- pump systems are known which comprise two pumps, which are driven by the internal combustion engine or an electric machine.
- variable displacement pumps two or more pump concepts and pumps in combination with a pressure accumulator are known.
- a delivery unit for conveying fuel from a storage tank to the internal combustion engine of a motor vehicle with a feed pump which is designed as an internal gear pump and has an internal gear toothed ring and a meshing with this gear as a conveyor gear, wherein between the teeth formed pumping chambers are limited in the direction of the axis of rotation on the one hand by a cover plate and on the other hand by a thrust washer and in the cover plate, a suction port and a pressure port of the feed pump are formed. Further, the gear is pressed by a pressing member against the thrust washer, whereby it is held in abutment against a base plate. This ensures that the ring gear and the gear can not perform any axial movements, which means that pressure pulsations of the pump and disturbing noises are avoided.
- the sliding on the base plate face of the thrust washer and the end face of the base plate are tuned to optimize the friction conditions.
- the teeth of the conveying members of the feed pump can be designed as helical gears, which results in an acting on the toothed ring axial force by which it is pressed against the thrust washer.
- the advantage should be achieved that between the thrust washer and the toothed ring a positive connection is required only in the direction of rotation.
- the present invention has for its object to provide a gear pump, in particular a gear oil pump of an automatic transmission of a motor vehicle, in which the pump gears are passed without increased manufacturing and assembly costs in the operation of the pump axially in the direction of the pump housing, whereby a sliding of the pump gears on the surface of the pump cover or the ⁇ l Replacementsflansches and thus increased wear of the pump cover and the ⁇ l Replacementsflansches is avoided.
- a gear pump in particular a gear oil pump of an automatic transmission of a motor vehicle, proposed, comprising a pump housing and a pump cover or ⁇ l Economicssflansch, driven in the case of a gear pump, the driving pump gear and in the case of a vane pump, the diegelzellenrad via a pump connected to the drive shaft active pump driver is, wherein the Pumpenmitauerdon have such an inclined position, that in the case of a gear pump, the driving pump gear and in the case of a vane pump, the diegelzellenrad be directed axially towards the pump housing and come to the pump housing to a plant.
- the toothing between the driving and driven pump gears likewise has a specific inclination, such that the driven pump gear, e.g. in the case of a réelle leopardrad- pump the ring gear, is directed axially in the direction of the pump housing and comes to the pump housing to a plant.
- the pump housing is preferably designed as a cast iron housing and the pump cover or ⁇ l Operationsflansch preferably as a light metal component, for example of aluminum or magnesium casting.
- the concept according to the invention avoids the axial oscillation of the pump gears in the direction of the light metal component, which results in a significant reduction of the wear. Furthermore, when the pump is operating axially, a uniform air gap is created between the pump gears and the light metal component. Advantageously, thereby the efficiency of the pump can be increased. A targeted, slight sliding of the pump gears on the surface of the cast iron housing is uncritical due to the self-lubrication effect of iron casting.
- Figure 1 A schematic sectional view of a state of the
- Figure 2 is a plan view of an internal gear pump according to the invention.
- FIG. 3 shows a sectional view along the line A-A from FIG. 2 and a sectional view along the line B-B from FIG. 2.
- gear pump 1 shows a gear pump 1 is shown, which has a manufactured from cast iron housing 2 and designed as a light metal component pump cover 3.
- the executed as an internal gear pump gear pump 1 is driven by a pump drive shaft 4, wherein for this purpose an operatively connected to the drive shaft 4 Pumpenmitcret 5 is provided, whereby the rotational movement of the drive shaft 4 is transmitted to the driving pump gear 6, which in turn as a ring gear, comprising a Internal gear running driven pump gear 7 drives.
- the gear pump 1 can be used for example as a transmission oil pump.
- the toothing 8 between the driving pump gear 6 and the driven pump gear 7 also has a targeted inclination, such that the driven pump gear 7, is directed axially in the direction of the iron casting housing 2, whereby it at the cast iron housing 2 to a defined plant 14 comes, as illustrated by the lower part of Figure 3.
- the helix angle of the toothing 8 between the driving pump gear 6 and the driven pump gear 7 is shown in the lower part of Figure 3 and provided with the reference symbol ß.
- the axial force acting during operation of the gear pump 1 is illustrated by the arrow 12.
- a uniform, stable air gap 15 is formed axially between the driven pump gear 7 and the pump cover 3 designed as a light metal component.
- the axial pendulum of the driving pump gear 6 and of the driven pump gear 7 in the direction of the pump cover 3 designed as a light metal component is avoided, which advantageously results in a significant reduction in wear and an increase in the service life of the gear pump 1.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011080048A DE102011080048A1 (de) | 2011-07-28 | 2011-07-28 | Getriebepumpe |
| PCT/EP2012/061330 WO2013013883A2 (de) | 2011-07-28 | 2012-06-14 | Getriebepumpe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2737213A2 true EP2737213A2 (de) | 2014-06-04 |
| EP2737213B1 EP2737213B1 (de) | 2016-10-12 |
Family
ID=46320940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12728484.2A Not-in-force EP2737213B1 (de) | 2011-07-28 | 2012-06-14 | Getriebepumpe |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20140161656A1 (de) |
| EP (1) | EP2737213B1 (de) |
| CN (1) | CN103717900A (de) |
| DE (1) | DE102011080048A1 (de) |
| WO (1) | WO2013013883A2 (de) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2314586A1 (de) * | 1973-03-23 | 1974-09-26 | Woodling George Victor | Druckmitteldruckbetaetigter mechanismus mit einem stator und einem rotor |
| DE2702963C2 (de) * | 1977-01-25 | 1983-12-01 | Manfred 8011 Kirchheim Schmid | Kombinierte Touren- und Abfahrts- Skisicherheitsbindung |
| US4553512A (en) * | 1985-01-17 | 1985-11-19 | Gerald Showman | Fluid pump assembly |
| DE9304600U1 (de) * | 1993-03-26 | 1994-07-28 | Robert Bosch Gmbh, 70469 Stuttgart | Welle-Nabe-Verbindung |
| DE4315432A1 (de) | 1993-05-08 | 1994-11-10 | Bosch Gmbh Robert | Aggregat zum Fördern von Kraftstoff aus einem Vorratstank zur Brennkraftmaschine eines Kraftfahrzeugs |
| WO2001079700A1 (de) * | 2000-04-18 | 2001-10-25 | Luk Fahrzeug-Hydraulik Gmbh & Co. Kg | Pumpe |
| US6817843B2 (en) * | 2002-12-06 | 2004-11-16 | Daimlerchrysler Corporation | Ball check air vent for transmission pump |
| DE102006056845A1 (de) * | 2006-12-01 | 2008-06-05 | Robert Bosch Gmbh | Förderaggregat |
| US7669577B2 (en) * | 2008-02-07 | 2010-03-02 | Kohler Co. | Gerotor and method of assembling the same |
-
2011
- 2011-07-28 DE DE102011080048A patent/DE102011080048A1/de not_active Withdrawn
-
2012
- 2012-06-14 CN CN201280037937.5A patent/CN103717900A/zh active Pending
- 2012-06-14 US US14/235,156 patent/US20140161656A1/en not_active Abandoned
- 2012-06-14 WO PCT/EP2012/061330 patent/WO2013013883A2/de not_active Ceased
- 2012-06-14 EP EP12728484.2A patent/EP2737213B1/de not_active Not-in-force
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2013013883A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2737213B1 (de) | 2016-10-12 |
| DE102011080048A1 (de) | 2013-01-31 |
| WO2013013883A3 (de) | 2013-08-22 |
| US20140161656A1 (en) | 2014-06-12 |
| WO2013013883A2 (de) | 2013-01-31 |
| CN103717900A (zh) | 2014-04-09 |
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