EP1026392A1 - Zahnradpumpe und Elektropumpengruppe versehen mit einer solchen Pumpe - Google Patents

Zahnradpumpe und Elektropumpengruppe versehen mit einer solchen Pumpe Download PDF

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Publication number
EP1026392A1
EP1026392A1 EP00400294A EP00400294A EP1026392A1 EP 1026392 A1 EP1026392 A1 EP 1026392A1 EP 00400294 A EP00400294 A EP 00400294A EP 00400294 A EP00400294 A EP 00400294A EP 1026392 A1 EP1026392 A1 EP 1026392A1
Authority
EP
European Patent Office
Prior art keywords
pump
hydraulic
cover
high pressure
capacity
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
Application number
EP00400294A
Other languages
English (en)
French (fr)
Other versions
EP1026392B2 (de
EP1026392B1 (de
Inventor
Christiano Vera
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.)
Hydroperfect International Inc
Original Assignee
Hydroperfect International Inc
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9541616&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1026392(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hydroperfect International Inc filed Critical Hydroperfect International Inc
Priority to DE60016643T priority Critical patent/DE60016643T3/de
Publication of EP1026392A1 publication Critical patent/EP1026392A1/de
Application granted granted Critical
Publication of EP1026392B1 publication Critical patent/EP1026392B1/de
Publication of EP1026392B2 publication Critical patent/EP1026392B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 of electric pump group, of the type comprising a pump body enclosing a gear pump and having an opening suction of a low pressure liquid and a chamber that communicates with an output channel of high pressure liquid, connected to a hydraulic circuit user, and hydraulic damping capacity pulsations produced by the pump and equipped with deaeration means to evacuate the air likely to be there To be in jail.
  • the invention also relates to a group electric pump equipped with a pump according to the invention.
  • the invention aims to overcome this drawback.
  • the hydraulic pump according to the invention is characterized in that the means are formed by high pressure liquid pumped back by the pump into the outlet channel.
  • the hydraulic capacity is arranged in series with the track of high pressure liquid so that the air accumulated in the capacity be expelled by the liquid repressed.
  • a tube ventilation extends from top of capacity to channel of repression.
  • the high pressure outlet is provided in the interface block between the pump and the drive motor thereof.
  • the damping capacity is formed by a cover in dome shape arranged directly on the upper side of the pump body so that the underside of the cover closes the pump body, with interposition of seal in the contacting faces of the cover and the pump body.
  • Figure 1 is an axial sectional view along the line I-I of figure 2.
  • Figure 2 is a sectional view along line II-II in Figure 3.
  • Figure 3 is a sectional view along line III-III in Figure 2.
  • Figure 4 is a sectional view along line IV-IV of figure 1.
  • Figure 5 is a sectional view along the line V-V in Figure 3.
  • Figure 6 is a sectional view along line VI-VI of figure 1.
  • the invention will be described below, by way of example, in its application to an electric pump group.
  • the pump is indicated in 1 and the motor electric intended to drive the pump carries the reference 2.
  • the pump is of the gear type.
  • the pump is mounted on a motor connection flange 3 by through an interface 4.
  • the pump 1 comprises a central pump body 6 provided a cavity having an ovoid cross section 7 in which the two pinions 8 are rotatably mounted and 9 of the gear pump via bearings indicated in 10.
  • the pinions mesh one the other.
  • One of the pinions, namely pinion 8, provided of a drive shaft 17 is rotated by the shaft motor 18 of motor 2 using a device coupling 19.
  • the central pump body 6 further comprises a cavity 21 which extends between the pinion housing cavity 7 and a peripheral seal sealing 22.
  • the cavity largely surrounds the cavity 7.
  • the cavity 21 is indicated in FIG. 5 by the area characterized by small lines. This zone is connected to the cavity 7 of the pump by a high passage pump outlet pressure 23 and therefore constitutes the area high pressure of the pump.
  • the parts that are left white and are indicated at 25 in FIG. 5, of the central pump body 6 constitute the upper face plane of the body.
  • Zone 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 area at the level of the high pressure outlet 23.
  • the pump body 6 is enclosed in a jacket 29 which is fixed 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 sucks in liquid from this reservoir 32 through a suction channel 33 and discharges high pressure liquid through passage 23 in cavity 21.
  • dome-shaped cover 35 which defines a pulsation damping capacity created during operation of the pump and housed in in addition to a pressure limiting device 36 and a make-up valve 37.
  • the cover is crossed at the periphery by four tie rods 39 which 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. It can also be seen that the cover has a radially depressed area 42 which extends from the periphery to the center which is configured as a hole cover centering 43.
  • the bottom of the cavity high pressure 21 is drilled in 45 and opens in a vertical channel in the support block 40 of the pump-motor interface 4 and which opens into a channel high pressure outlet 46 opening outwards 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 location near the wall of top 49 of the cover up to the hole 45. Thanks to this tube, the liquid which is discharged by the pump must, for reach the high pressure outlet 46 go up from the high pressure cavity 21 in the space 41 of the cavity hydraulic up to the entry of tube 48 to descend then in the tube 48. Thus the cavity 21 and the capacity 41 are connected in series in the track of high pressure liquid and air trapped in capacity will be chased or trained pa-r high pressure liquid out of the pump. The tube deaeration 48 therefore ensures effective deaeration of the hydraulic damping capacity.
  • the support block 40 has a cavity important 51 which extends practically throughout its periphery, communicates with the reservoir 32 and the bottom 52 indicated by dots in FIG. 6 forms a large heat exchange surface allowing to efficiently dissipate the calories produced by the electronic engine control controller housed in the interface part 53 located between the support block 40 and the motor flange 3 and the device for which external electrical connection is indicated in 54.
  • the pressure limiting device built into the cover and standard configuration is interposed between the high pressure part of the pump and the tank by opening into it as it is indicated by arrows.
  • the invention proposes a solution which is both simple and effective problem posed by possible residual air in the damping capacity of the pump.
  • Another important advantage of the invention is that this depreciation capacity is implemented under shape of a domed cover which is directly fixed on the upper face of the central pump body, without the interposition of a specific interface device.
  • This characteristic of the invention and the fact that the high pressure cavity is arranged around the part central pump gear housing allows to obtain a structure that is simple, compact and therefore space-saving. So the dimensions of the group electric pump according to the invention are relatively small.
  • the large cavity in the support block of the interface which is in communication with the tank ensures efficient removal 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)
EP00400294A 1999-02-04 2000-02-03 Zahnradpumpe und Elektropumpengruppe versehen mit einer solchen Pumpe Expired - Lifetime EP1026392B2 (de)

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
FR9901317A FR2789446B1 (fr) 1999-02-04 1999-02-04 Pompe hydraulique du type a engrenage et groupe electro-pompe equipe d'une telle pompe
FR9901317 1999-02-04

Publications (3)

Publication Number Publication Date
EP1026392A1 true EP1026392A1 (de) 2000-08-09
EP1026392B1 EP1026392B1 (de) 2004-12-15
EP1026392B2 EP1026392B2 (de) 2012-05-30

Family

ID=9541616

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00400294A Expired - Lifetime EP1026392B2 (de) 1999-02-04 2000-02-03 Zahnradpumpe und Elektropumpengruppe versehen mit einer solchen Pumpe

Country Status (5)

Country Link
US (1) US6322329B1 (de)
EP (1) EP1026392B2 (de)
BR (1) BR0000315A (de)
DE (1) DE60016643T3 (de)
FR (1) FR2789446B1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
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
FR2893092B1 (fr) 2005-11-08 2008-10-10 Koyo Hpi Soc Par Actions Simpl Groupe electro-pompe, du type comprenant au moins une pompe hydraulique, notamment a engrenage, entrainee en rotation par un dispositif moteur
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

Citations (10)

* Cited by examiner, † Cited by third party
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
GB987587A (en) * 1961-01-30 1965-03-31 Charlotte Vogel Improvements in gear pump assemblies
FR2131609A5 (de) * 1971-03-26 1972-11-10 Bennett Pump Inc
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
GB2220035A (en) * 1988-06-21 1989-12-28 Pierburg Gmbh Fuel pump for an internal combustion engine
DE4025910A1 (de) * 1989-12-15 1991-06-20 Gilardini Spa Kraftstoffpumpe
DE19816173A1 (de) * 1997-04-10 1998-10-15 Walbro Corp Kraftstoffpumpe

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3951117A (en) * 1974-05-30 1976-04-20 Cummins Engine Company, Inc. Fuel supply system for an internal combustion engine
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
ATE185403T1 (de) † 1994-11-07 1999-10-15 Hobourn Automotive Ltd Einheit mit drehkolbenpumpe und motor
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 (de) † 1996-06-14 1999-10-27 TRW Fahrwerksysteme GmbH & Co. KG Verfahren zur entlüftung eines hydraulischen servolenksystems
JP3667034B2 (ja) † 1996-07-17 2005-07-06 光洋精工株式会社 電動ポンプ
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

Patent Citations (10)

* Cited by examiner, † Cited by third party
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
GB987587A (en) * 1961-01-30 1965-03-31 Charlotte Vogel Improvements in gear pump assemblies
FR2131609A5 (de) * 1971-03-26 1972-11-10 Bennett Pump Inc
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
GB2220035A (en) * 1988-06-21 1989-12-28 Pierburg Gmbh Fuel pump for an internal combustion engine
DE4025910A1 (de) * 1989-12-15 1991-06-20 Gilardini Spa Kraftstoffpumpe
DE19816173A1 (de) * 1997-04-10 1998-10-15 Walbro Corp Kraftstoffpumpe

Also Published As

Publication number Publication date
FR2789446B1 (fr) 2002-03-08
EP1026392B2 (de) 2012-05-30
DE60016643T3 (de) 2012-12-06
FR2789446A1 (fr) 2000-08-11
EP1026392B1 (de) 2004-12-15
US6322329B1 (en) 2001-11-27
DE60016643T2 (de) 2005-12-01
BR0000315A (pt) 2000-11-14
DE60016643D1 (de) 2005-01-20

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