EP1026392B1 - Pompe hydraulique du type à engrenage et groupe électro-pompe équipé d'une telle pompe - Google Patents
Pompe hydraulique du type à engrenage et groupe électro-pompe équipé d'une telle pompe Download PDFInfo
- Publication number
- EP1026392B1 EP1026392B1 EP00400294A EP00400294A EP1026392B1 EP 1026392 B1 EP1026392 B1 EP 1026392B1 EP 00400294 A EP00400294 A EP 00400294A EP 00400294 A EP00400294 A EP 00400294A EP 1026392 B1 EP1026392 B1 EP 1026392B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- high pressure
- lid
- hydraulic
- capacitance
- 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.)
- Expired - Lifetime
Links
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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
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/28—Safety arrangements; Monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
- F02M37/0041—Means for damping pressure pulsations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/04—Feeding by means of driven pumps
- F02M37/041—Arrangements for driving gear-type pumps
Definitions
- the invention relates to a hydraulic pump, in particular Electro-pump group, of the type defined in the preamble of claim 1.
- a hydraulic pump of this type is described in DE 3014280.
- the pulsation damping device is of the type to membrane, which requires a relatively complex and cumbersome.
- the object of the invention is to overcome this disadvantage.
- the hydraulic pump according to the invention has the features that are stated in the characterizing part of claim 1.
- the pump is indicated in 1 and the motor electrical drive to drive the pump carries the reference 2.
- the pump is of the gear type.
- the pump is mounted on a connection flange 3 of the motor by via an interface 4.
- the pump 1 comprises a central pump body 6 provided a cavity with an oval cross-section 7 in which are rotatably mounted the two pinions 8 and 9 of the gear pump through bearings indicated in 10.
- the gears mesh with one the other.
- One of the gables, namely pinion 8, provided with of a driving shaft 17 is rotated by the shaft engine 18 of engine 2 using a device coupling 19.
- the central pump body 6 further comprises a cavity 21 which extends between the housing cavity 7 of the gears and a peripheral seal 22.
- the cavity largely surrounds the cavity 7.
- the cavity 21 is indicated in FIG. the area characterized by small features. This zone is connected to the cavity 7 of the pump by a high passage pump outlet pressure 23 and thus constitutes the zone high pressure of the pump.
- the parts that are left white and are indicated at 25 in FIG. central pump body 6 constitute the upper face plane of the body.
- Area 26 of the central ovoid cavity 7, which is characterized by small dots, constitutes the low pressure zone of the pump.
- a seal 27 isolates this area from the high pressure zone to the of the outlet high pressure passage 23.
- the pump body 6 is enclosed in a jacket 29 which is fastened at 28, sealingly at the periphery of interface 4.
- This folder defines a reservoir of low pressure liquid and communicates with the circuit user by an external connection 31.
- the pump draws liquid from this reservoir 32 through a suction channel 33 and discharges high pressure liquid through the passage 23 in the cavity 21.
- a domed lid 35 which delimits a pulse damping capacity created during the operation of the pump and houses in in addition to a pressure limiting device 36 and a refill valve 37.
- the cover is crossed at the periphery by four tie rods 39 that extend also through the central pump body 6 and are screwed into the support block 40 of the interface 4.
- the Figure 4 shows the damping capacity formed by the internal space 41.
- the lid has a radially depressed area 42 extending from the periphery to the center that is configured as a hole centering lid 43.
- the internal space of damping capacity 41 of the lid 35 co-communicates with the high pressure cavity 21 of the central pump body 6.
- the shapes of the space of cover and cavity correspond to the level of contact surfaces of the capacity and the pump body, the seals 22 and 27 being interposed between these two faces, the seal 22 being supported by the cover.
- the bottom of the cavity high pressure 21 is pierced in 45 and opens in a vertical channel practiced in the support block 40 of the pump-motor interface 4 and which opens into a channel high pressure outlet 46 opening outward to the periphery of this support block.
- a deaeration tube 48 extends into the internal space common formed by the capacity space 41 and the cavity 21, vertically from a place near the wall of top 49 of the lid until the piercing 45. Thanks to tube, the liquid which is pumped back by the pump must, for reach the high pressure outlet 46 back up since the high pressure cavity 21 in the space 41 of the cavity hydraulic up to the tube inlet 48 to get off then in the tube 48. Thus the cavity 21 and the capacity 41 are connected in series in the way flow of high pressure liquid and air imprisoned in the capacity will be driven away or driven by the high pressure liquid out of the pump. The tube of deaeration 48 thus ensures effective deaeration of the hydraulic damping capacity.
- the support block 40 has a cavity important 51 that extends virtually all over its periphery, communicates with the reservoir 32 and whose bottom 52 indicated by dots in Figure 6 forms a important heat exchange surface to effectively evacuate the calories produced by the electronic engine control controller housed in the interface portion 53 located between the support block 40 and the flange of the motor 3 and whose device external electrical connection is indicated in 54.
- the pressure limiter device Built-in lid and standard configuration is interposed between the high pressure portion of the pump and the tank by opening in it like this is indicated by arrows. It was again indicated in 55 a gauge for checking the level of the liquid in the tank.
- the invention proposes a solution that is both simple and effective problem of potential residual air in the damping capacity of the pump.
- Another important advantage of the invention lies in the fact that this damping capacity is implemented under shape of a dome-shaped lid that is directly fixed on the upper face of the central pump body, without interposition of a specific interface device.
- This feature of the invention and the fact that high pressure cavity is arranged around the part central housing pump sprockets allows to obtain a structure that is simple, compact and therefore not bulky. So the dimensions of the group electropump according to the invention are relatively weak.
- the large cavity in the support block of the interface that is in communication with the tank ensures an efficient evacuation of the calories produced by the electronic engine control controller.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
Description
Claims (10)
- Pompe hydraulique, notamment de groupe électro-pompe, du type comprenant un corps de pompe (6) enfermant une pompe à engrenage (1) et pourvu d'une ouverture d'aspiration (33) d'un liquide basse pression et d'une chambre de refoulement (21) de liquide haute pression, qui communique avec un canal de sortie haute pression (45, 46) relié à un circuit hydraulique utilisateur et un dispositif d'amortissement des pulsations de liquide produites par la pompe, caractérisée en ce que le dispositif d'amortissement des pulsations est formé par une capacité hydraulique (41) disposée en série dans la voie d'écoulement du liquide haute pression hors de la pompe (1), entre la chambre de refoulement (21) et le canal de sortie haute pression (45, 46) et en ce que le liquide haute pression en entraínant l'air emprisonné dans cette capacité (41) lors de son écoulement à travers la capacité (41) constitue un moyen de désaération de cette dernière.
- Pompe hydraulique selon la revendication 1, caractérisée en ce que la capacité d'amortissement (41) se trouve au-dessus de la chambre de refoulement (21) et un tube d'aération (48) s'étend du haut de la capacité jusqu'au canal de refoulement (45, 46).
- Pompe hydraulique selon l'une des revendications 1 ou 2, caractérisée en ce que la capacité d'amortissement (41) est formée par un couvercle (35) disposé directement sur la face supérieure (25) du corps de pompe (6) de façon que la face inférieure du couvercle ferme le corps de pompe, avec interposition de joint d'étanchéité (22, 27) dans les faces en contact du couvercle (35) et du corps de pompe (6).
- Pompe hydraulique selon l'une des revendications 1 à 3, caractérisée en ce que la chambre de sortie haute pression (21) est prévue dans le corps central de pompe (6) autour de la partie de logement des pignons (8, 9) de la pompe.
- Pompe hydraulique selon l'une des revendications 3 ou 4, caractérisée en ce qu'un dispositif limiteur de pression (36) est monté dans le couvercle (35).
- Pompe hydraulique selon l'une des revendications 3 à caractérisée en ce qu'un clapet de réalimentation (37) est monté dans le couvercle (38).
- Pompe hydraulique selon l'une des revendications 2 à 4, caractérisé en ce que le couvercle comporte en son centre dans une zone de dépression un trou de centrage de couvercle (43).
- Groupe électropompe comprenant une pompe à engrenage, un moteur électrique d'entraínement de la pompe et une interface entre le moteur et la pompe, comportant un bloc de support de la pompe, caractérisé en ce qu'il comporte une pompe hydraulique (1) selon l'une des revendications précédentes.
- Groupe électropompe selon la revendication 8, caractérisé en ce que la sortie haute pression (46) de la pompe est prévue dans le bloc support d'interface (40), un perçage (45) pratiqué dans le fond du corps central de pompe (6) reliant la chambre de sortie haute pression (21) au canal de sortie (46).
- Groupe électropompe selon l'une des revendications 8 ou 9, dans lequel le corps central de pompe et le couvercle sont enfermés dans une chemise extérieure fixée sur le bloc de support d'interface et formant un réservoir de liquide basse pression, caractérisé en ce que le bloc support d'interface comporte une cavité (51) en communication avec le réservoir (32) et dont le fond (52) constitue une surface d'échange thermique pour l'évacuation des calories produits par le contrôleur électronique de pilotage du moteur logé dans une partie d'interface (53) en dessous du bloc (40).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE60016643T DE60016643T3 (de) | 1999-02-04 | 2000-02-03 | Zahnradpumpe und Elektropumpengruppe versehen mit einer solchen Pumpe |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9901317 | 1999-02-04 | ||
FR9901317A FR2789446B1 (fr) | 1999-02-04 | 1999-02-04 | Pompe hydraulique du type a engrenage et groupe electro-pompe equipe d'une telle pompe |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1026392A1 EP1026392A1 (fr) | 2000-08-09 |
EP1026392B1 true EP1026392B1 (fr) | 2004-12-15 |
EP1026392B2 EP1026392B2 (fr) | 2012-05-30 |
Family
ID=9541616
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00400294A Expired - Lifetime EP1026392B2 (fr) | 1999-02-04 | 2000-02-03 | Pompe hydraulique du type à engrenage et groupe électro-pompe équipé d'une telle pompe |
Country Status (5)
Country | Link |
---|---|
US (1) | US6322329B1 (fr) |
EP (1) | EP1026392B2 (fr) |
BR (1) | BR0000315A (fr) |
DE (1) | DE60016643T3 (fr) |
FR (1) | FR2789446B1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7942649B2 (en) | 2005-11-08 | 2011-05-17 | Jtekt Hpi | Electrically driven pump unit |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19942567A1 (de) * | 1999-09-07 | 2001-03-22 | Fluidtech Gmbh | Vorrichtung zum Pumpen von Fluid |
DE10009587A1 (de) * | 2000-02-29 | 2001-08-30 | Mannesmann Rexroth Ag | Kompaktes elektrohydraulisches Motorpumpenaggregat |
DE20302535U1 (de) * | 2003-02-17 | 2003-06-18 | Trw Fahrwerksyst Gmbh & Co | Hydraulikpumpe für ein Servolenksystem |
JP4438519B2 (ja) * | 2004-06-02 | 2010-03-24 | 株式会社ジェイテクト | ポンプ装置 |
JP4511306B2 (ja) * | 2004-10-15 | 2010-07-28 | 日立オートモティブシステムズ株式会社 | パワーステアリング装置 |
DE102007020002B4 (de) * | 2007-04-27 | 2018-10-04 | Trw Automotive Gmbh | Zahnradpumpe |
CN107867323B (zh) * | 2016-09-28 | 2019-11-22 | 比亚迪股份有限公司 | 电机油泵总成、转向系统和车辆 |
DE102017127675B4 (de) * | 2017-11-23 | 2023-03-23 | HAWE Altenstadt Holding GmbH | Hydraulische Druckversorgungseinheit |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1944340A (en) * | 1928-06-27 | 1934-01-23 | Zubaty Joseph | Auxiliary means for fuel pumps |
DE657185C (de) * | 1935-08-14 | 1938-02-28 | August Heinrich Fuerstenberg | Drehkolbenpumpe mit selbsttaetiger Entlueftungsvorrichtung |
GB481084A (en) * | 1937-08-12 | 1938-03-04 | Emanuel Mocigemba | Improvements in rotary pumps |
CH393095A (de) * | 1961-01-30 | 1965-05-31 | Vogel Willy Fa | Pumpenaggregat, insbesondere für Zentralschmieranlagen |
US3715863A (en) * | 1971-03-26 | 1973-02-13 | Bennett Pump Inc | Compact pump/air separator apparatus |
US3951117A (en) * | 1974-05-30 | 1976-04-20 | Cummins Engine Company, Inc. | Fuel supply system for an internal combustion engine |
DE2832299A1 (de) * | 1978-07-22 | 1980-01-31 | Bosch Gmbh Robert | Geraeuschdaempfungseinrichtung |
DE3014280A1 (de) * | 1980-04-15 | 1981-10-22 | Bosch Gmbh Robert | Geraeuschdaempfungseinrichtung fuer druckschwingungen eines foerdermediums |
US4355964A (en) * | 1980-08-22 | 1982-10-26 | Caterpillar Tractor Co. | Gear pump having fluid deaeration capability |
JPS6482377A (en) † | 1987-09-24 | 1989-03-28 | Toshiba Corp | Magazine mounting device |
DE3820887A1 (de) * | 1988-06-21 | 1989-12-28 | Pierburg Gmbh | Brennstoffpumpe |
DE4025910A1 (de) * | 1989-12-15 | 1991-06-20 | Gilardini Spa | Kraftstoffpumpe |
EP0742872B1 (fr) † | 1994-11-07 | 1999-10-06 | Hobourn Automotive Limited | Pompe rotative et assemblage de moteur |
FR2735534B1 (fr) † | 1995-06-15 | 1997-08-29 | Hydroperfect Int | Ensemble moteur electrique et pompe hydraulique a grande compacite |
DE19524965A1 (de) † | 1995-07-08 | 1997-01-09 | Bosch Gmbh Robert | Zahnradmaschine (Pumpe oder Motor) |
FR2738302B1 (fr) † | 1995-08-30 | 1997-10-10 | Hydroperfect Int | Groupe electro-hydraulique compact |
EP0902751B1 (fr) † | 1996-06-14 | 1999-10-27 | TRW Fahrwerksysteme GmbH & Co. KG | Procede d'evacuation de l'air dans un systeme de direction hydraulique assistee |
JP3667034B2 (ja) † | 1996-07-17 | 2005-07-06 | 光洋精工株式会社 | 電動ポンプ |
US5997262A (en) * | 1997-04-10 | 1999-12-07 | Walbro Corporation | Screw pins for a gear rotor fuel pump assembly |
US6158983A (en) * | 1997-04-24 | 2000-12-12 | Trw Inc. | Pump having muffler for attenuating noise |
JPH1137060A (ja) * | 1997-07-16 | 1999-02-09 | Koyo Seiko Co Ltd | ギヤポンプ |
-
1999
- 1999-02-04 FR FR9901317A patent/FR2789446B1/fr not_active Expired - Lifetime
-
2000
- 2000-02-03 EP EP00400294A patent/EP1026392B2/fr not_active Expired - Lifetime
- 2000-02-03 DE DE60016643T patent/DE60016643T3/de not_active Expired - Lifetime
- 2000-02-04 BR BR0000315-8A patent/BR0000315A/pt not_active Application Discontinuation
- 2000-02-04 US US09/497,485 patent/US6322329B1/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7942649B2 (en) | 2005-11-08 | 2011-05-17 | Jtekt Hpi | Electrically driven pump unit |
Also Published As
Publication number | Publication date |
---|---|
EP1026392B2 (fr) | 2012-05-30 |
FR2789446A1 (fr) | 2000-08-11 |
FR2789446B1 (fr) | 2002-03-08 |
DE60016643T2 (de) | 2005-12-01 |
EP1026392A1 (fr) | 2000-08-09 |
US6322329B1 (en) | 2001-11-27 |
DE60016643D1 (de) | 2005-01-20 |
BR0000315A (pt) | 2000-11-14 |
DE60016643T3 (de) | 2012-12-06 |
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