CN102648350A - External Gear Pump - Google Patents
External Gear Pump Download PDFInfo
- Publication number
- CN102648350A CN102648350A CN2010800556614A CN201080055661A CN102648350A CN 102648350 A CN102648350 A CN 102648350A CN 2010800556614 A CN2010800556614 A CN 2010800556614A CN 201080055661 A CN201080055661 A CN 201080055661A CN 102648350 A CN102648350 A CN 102648350A
- Authority
- CN
- China
- Prior art keywords
- gear pump
- housing
- external gear
- pressure
- housing ring
- 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
Images
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
- 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
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
-
- 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
- F01C21/104—Stators; Members defining the outer boundaries of the working chamber
- F01C21/106—Stators; Members defining the outer boundaries of the working chamber with a radial surface, e.g. cam rings
-
- 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
- F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
-
- 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
- F04C2240/00—Components
- F04C2240/30—Casings or housings
-
- 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
- F04C2240/70—Use of multiplicity of similar components; Modular construction
-
- 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
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/04—Force
- F04C2270/044—Force axial
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
An external gear pump (14) comprises two rotatable gear wheels (100, 102) that mesh with each other. According to the invention, at least one gear wheel (100) is mounted, in relation to the rotational axis (132) thereof, in the radial direction by the contact of tooth tips (162) directed radially outward with a mounting surface (136) located radially outward. The operating behavior and efficiency of the external gear pump (14) according to the invention are improved by optimized guidance of the liquid to be delivered both on the suction side and on the pressure side by means of openings (170, 174) and channels (172, 176).
Description
Technical field
The present invention relates to a kind of external gear pump according to claim 1 preamble.
Background technique
By the known a kind of external gear pump of DE 10 2,006 056 843A1, this external gear pump has two rotatable, pitch wheels.These gear supports are in housing.At the run duration of external gear pump at suction side draw fluid, on-load pressure and input on the pressure side.
By disclosed DE 10 2,008 054 751.4 known a kind of external gear pumps in the back, wherein pitch wheel is bearing in the housing ring through tooth top.This housing articulating is received between first housing member and second housing member, wherein, the axially directed of gear and/or supporting is carried out through first and second housing members.
When external gear pump is designed to the highest transmission power (this especially realizes through the facewidth of increase gear and the corresponding coupling of housing ring simply); Possibly when disadvantageous operating point, when the high rotating speed of external gear pump, cause in suction channel, forming bubble owing to restriction loss on the suction side at external gear pump, these bubbles are sucked in the tooth cavity and there then possibly cause undesirable cavitation effect.
Summary of the invention
Task of the present invention provides a kind of external gear pump, even if it especially has enough big flow cross section in suction side when big feed flow, makes in all operating points, not form or only in very little scope, form bubble.In addition, should make simply especially by external gear pump of the present invention and be durable.
The external gear pump of the characteristic of this task through having claim 1 solves.Favourable expanded configuration provides in the dependent claims.In addition, in the important characteristic specification below of the present invention and find in the accompanying drawings, wherein, these characteristics not only can individually and can be important for the present invention with different combinations, and this is not needed to spell out once more.
Be that suction areas and low-pressure channel hydraulically interconnect with a double big cross section of the mode with first approximation through what can realize by housing ring design proposal of the present invention.Obviously reduce the pressure loss on the suction side of external gear pump thus.Therefore even if in the external gear pump of gear with non-constant width and corresponding big transmission power, cavitation erosion do not occur yet.
Because by additional flow path of the present invention; I.e. perforation and at least one passage; Be arranged in the housing ring and this housing ring just in time the facewidth with gear is identical thick; So what be easy to realize is that when transmission power was big especially, the housing ring was provided with by perforation and the passage in the housing ring of the present invention all the time.Be that the facewidth of gear and the thickness of housing ring are same big.Therefore, in the housing ring, there are enough materials all the time, so that reserve by perforation of the present invention and passage.
Possible in addition is, the different modification with different transmission powers by external gear pump of the present invention are provided, and wherein, these different modification are being distinguished aspect the thickness of the width of gear and housing ring each other.In the modification of transmission power, additionally also in the housing ring, constitute by perforation of the present invention and passage with increase.
Reaching significant cost thus reduces; Because the gear pump with little transmission power and corresponding thin housing ring not perforation and passage also can be dealt with, and it is corresponding thicker and have by perforation of the present invention and passage to be used to have the housing ring of external gear pump of big transmission power.All other member can be used for this two pump modification.
Additional flow cross section is set up by the passage that the present invention reserves through perforation with on distolateral, and this perforation is with two distolateral interconnecting of housing ring, and passage will be bored a hole and is connected with the suction areas or the pressure span of external gear pump.This moulding is advantageous particularly especially therefore, because it has symmetrical structure, this is in flow characteristic and act on and play positive effect aspect the pressure on the gear.In addition, this moulding also is fit to through the sintering manufacturing very much, because perforation and passage also can be processed through the sintering mold of two-piece type easily.Also manufacturing expense is kept very low thus.
By in the housing ring of the present invention, between these two passages that on the housing ring is distolateral, extend, be provided with a dividing plate.Realized that thus housing is around the cornerite of gear and the supporting of gear in the housing ring can be through not reducing by passage of the present invention thus.Therefore, even if in gear pump, also obtain gear through the extraordinary supporting on the leaving a blank of the corresponding circle of its tooth top in the housing ring with big transmission power.
In the another kind of preferred design proposal by gear pump of the present invention, first housing member, second housing member and/or housing ring are welded to each other on excircle.Make these three described members fixing relative to each other thus.This means of fixation especially is particularly well adapted for producing in enormous quantities because they be can fine automation and on technology, move as safe as a housely.
In order to make the not outstanding outer diameter that surpasses housing member and/or housing ring of radially outward of weld seam, on housing member and/or housing ring, chamfering is set.In this chamfering, place weld seam.
Also realized other advantage thus, promptly weld beans can columniform outer surface attached to housing ring and housing member on, this can influence the manufacturing of the member that welds together and originally unfriendly by the assembling in the external casing of gear pump of the present invention.
The invention still further relates to a kind of fuel injection system with above-described external gear pump.Its design proposal and advantage are set forth in the above.At this point with reference to these elaborations.
Description of drawings
Set forth mode of execution of the present invention with reference to the accompanying drawings.Shown in the drawings:
Fig. 1 illustrates the schematic views with internal-combustion engine and fuel injection system of the external gear pump that is used for transfer the fuel;
Fig. 2 illustrates by the external gear pump of Fig. 1 view along the cutting line that in Fig. 3, marks with II-II;
Fig. 3 illustrates by the external gear pump of Fig. 1 view along the cutting line that in Fig. 2, marks with III-III;
Fig. 4 illustrates the zoomed-in view by the gearing of the external gear pump of Fig. 1; With
Fig. 5 illustrates the longitudinal section of passing housing ring 72 along the cutting line that in Fig. 3, marks with IV-IV;
Embodiment
In Fig. 1 generally with reference character 10 expression be used for provide the fuel injection system of fuel to comprise external gear pump 14 to internal-combustion engine 12.
Fuel injection system 10 has the storage vessel 16 that is used for fuel-in-storage.By means of preparatory transfer pump 18 fuel is transported to the low pressure line 22 from storage vessel 16, this preparatory transfer pump is preferably through adjustable drive unit, the especially drive unit driving of motor 20 forms.Through using the quantity delivered that adjustable drive unit that is used for preparatory transfer pump 18 can fuel metering ejecting system 10, thereby can reduce the conveyance loss that obtains through the fuel of carrying unnecessary amount, the fuel of this unnecessary amount must be transmitted back in the storage vessel 16 again.
For the fuel pressure that limits in the low pressure line 22 is provided with low voltage limit valve 24, when can predetermined pressure maximum being exceeded, fuel is transmitted back to the storage vessel 16 from low pressure line 22 through this low voltage limit valve.
Low pressure line 22 leads to the input end 26 of external gear pump 14.External gear pump loads high pressure to the fuel that is transfused to through input end 26.Be loaded the output terminal 28 arrival pressure ducts 30 of the fuel of high pressure through external gear pump 14, this pressure duct leads to the fuel collection device of rail 32 forms.This rail 32 provides the fuel that is loaded pressure for injection valve 34.These injection valves 34 are configured to a firing chamber in the firing chamber of internal-combustion engine 12 respectively and can realize that direct fuel injection is in the firing chamber.
Pressure in the rail 32 detects by means of pressure transducer 36.Can flow to control gear 40 by means of data circuit 38 with detected pressure correspondent voltage signal.This control gear 40 is connected with motor 20 through control wiring 42.
The internal-combustion engine housing 44 that internal-combustion engine 12 is illustrated with comprising a section, for example the internal-combustion engine housing of cylinder cap form.This internal-combustion engine housing 44 has a surface of shell 46 that outwards points to.In addition, this internal-combustion engine 12 comprises an axle, the especially axle of camshaft form, and this centers on the live axle 48 that axis 50 is rotatably supported on the internal-combustion engine housing 44 and is formed for external gear pump 14.Conversion ground, live axle 48 can constitute through the axle that separates with internal-combustion engine 12.
In internal-combustion engine housing 44, be provided with a housing opening 52, this housing opening driven shaft 48 passes, and makes shaft end 54 exceed in the surrounding environment that surface of shell 46 extends to internal-combustion engine 12.
The external casing 56 of external gear pump 14 seals with the seal arrangement 64 of internal-combustion engine housing 44 by means of annular each other.
Externally be provided with a plurality of housing members in the housing 56, promptly first housing member 66, with isolated second housing member 68 of first housing member and as the 3rd housing member 70 of housing lid.The 3rd housing member 70 and external casing 56 welding.Preferably, these housing members 66,68 and 70 have the plane that is parallel to each other, and make these housing members form the sealing surface of metal with these planes.At this, can produce sealing force by means of the 3rd housing member 70, sealing power is pressed into housing member 66 and 68 in the external casing 56.
Between first housing member 66 and second housing member 68, a housing ring 72 is set in the axial direction, in this housing ring, gearing 74 is set.This gearing 74 forms the real supply unit of external gear pump 14.This gearing 74 is bearing between first housing member 66 and second housing member 68 in the axial direction.Housing ring 72 is used for supporting gear device 74 radially.
For make housing member 66 and 68 and housing ring 72 relative to each other locate, they are welded to each other through weld seam 168 (see figure 2)s.Weld seam 168 needs not to be liquid seal; Weld seam also can interrupt.Weld seam 168 is divided into two about segmental arcs of 100 ° in Fig. 3.Weld seam 168 preferably is arranged on the place that housing ring 72 has big material thickness.For weld seam 168 is not stretched out above housing member 66 and 68 and housing ring 72 diametrically, on these members, construct chamfered edge (not being with reference character), weld seam 168 is arranged in these chamfered edges.
In addition, external gear pump 14 comprises pressure limit valve 88 (referring to Fig. 2), and the fluid that when can predetermined operating pressure being exceeded, can set up between high-pressure channel 82 and the low-pressure channel 76 by this pressure limit valve connects.Pressure limit valve 88 is arranged in the connecting passage 90, and this connecting passage extends between high-pressure channel 82 and low-pressure channel 76.Pressure limit valve 88 has the valve body 94 and the valve spring 96 that are pressed into valve seat 92 in the connecting passage 90, one and these valve seat 92 mating reactions, and this valve spring is pressed onto valve body 94 on the valve seat 92.Connecting passage 90 seals by means of bulged-in plug 98 with the form formation of blind hole and on the open end of this connecting passage.
Gearing 74 comprises first gear 100, this first gear and 102 engagements of second gear.First gear 100 has the diameter littler than second gear 102.First gear 100 is driven (referring to Fig. 2 and 3) by second gear 102.
Axle stepped part 110 is passed the housing of external casing 56 and is left a blank 62.In order to make live axle 48 with respect to external gear pump 14 sealings, a seal arrangement 118 is set, the sealing device especially constitutes with the form of radial seal ring.The sealing device is arranged on case protrusion 60 inside and comprises first sealing lip 120 that only schematically illustrates, and stops from internal-combustion engine 12 inner oil through this first sealing lip to enter into external gear pump 14.In addition, seal arrangement 118 comprises second sealing lip 122, stops from external gear pump 14 inner fuel through this second sealing lip to be discharged in the inner room of internal-combustion engine 12.
Axle guide surface 112 is bearing in the columniform supporting surface 124, and this supporting surface is formed on first housing member 66.On supporting surface 124, connect a centering face 126 that tilts with respect to supporting surface 124, can more easily axle guide surface 112 be incorporated in the supporting surface 124 through this centering face.
For live axle 48 is engaged with external gear pump 14, live axle 48 and external gear pump 14 on 128 and 130 direction of engagement represented towards moving each other.The spin axis 104 of the direction of engagement 128 and 130 and second gear 102 and axis 50 conllinear of live axle 48.
Be provided with second supporting surface 142 that a section ground is cylinder side face shape in order to support second gear 102, this second supporting surface for example about 30 ° extend to about 50 ° segmental arc 144.Second supporting surface 142 carries out the transition in the second housing face 146 that a same section ground is cylinder side face shape.
Supporting surface 136 and 142 and housing face 140 and 146 surround gear 100,102.Gear 100,102 has the diameter that obviously differs from one another, and makes that thus said cornerite is big especially.
Supporting surface 136 and 142 and mesh regional 134 between them, limit a suction areas 148, can give external gear pump 14 inputs medium to be carried through this suction areas.Mesh regional 134 with a transition part between housing face 140 and 146 in the pressure span 150 that on the pressure side limits external gear pump 14.
Plane of rotation with gear 100,102 is reference, and pressure chamber 154 and 158 is arranged on the both sides of gear 100,102 respectively doublely, makes gear 100,102 be loaded identical pressure in the axial direction from both sides.
Gear 100,102 has a plurality of teeth 160 respectively.These teeth 160 have the Topland of outside sensing, and these Toplands are according to the curvature bending of the supporting surface that matches 136,142.
At the run duration of external gear pump 14, give this external gear pump input fluid to be carried through input end 26.On driving direction 164, drive second gear 102 by means of live axle 48.Can be from the suction areas 148s along supporting surface 142 and 136 and input to pressure span 150 with this mode along the fluid that housing face 140 and 146 will be to be carried.
In the elongation line of high-pressure channel 82 and/or low-pressure channel 76, in housing ring 72, constitute a perforation 170,174 respectively by the present invention.To bore a hole and 170 be connected with the tooth cavity hydraulic pressure of gearing 74 through being configured in passage 172,176 in the housing ring 72 equally with 174.Not only in the suction areas 148 of gearing 74 but also in pressure span 150, increase flow cross section thus, this pro influences the roadability and the efficient of gear pump.
Between passage 172 and 176, remain with a dividing plate 178 (referring to Fig. 5), make the cornerite of the gear 100,102 that on top circle, is supported keep size constant.
Claims (8)
1. external gear pump (14); It has two rotatable, pitch wheels (100,102), wherein; These gears (100; 102) be arranged in the housing ring (72), it is characterized in that, in said housing ring (72), constitute the hydraulic pressure between low-pressure channel (76) and suction areas (148) and connect.
2. external gear pump (14); It has two rotatable, pitch wheels (100,102), wherein; These gears (100; 102) be arranged in the housing ring (72), it is characterized in that, in said housing ring (72), constitute the hydraulic pressure between high-pressure channel (76) and pressure span (150) and connect.
3. according to the external gear pump (14) of claim 1 or 2; It is characterized in that; In said housing ring (72), there is first perforation (170); Said first perforation (170) is arranged on the elongation line of said low-pressure channel (76), and said first perforation (170) is connected with said suction areas (148) through at least one first passage (172).
4. according to the external gear pump (14) of claim 2 or 3; It is characterized in that; In said housing ring (72), there is second perforation (174); Said second perforation (174) is arranged on the elongation line of pressure channel (150), and said second perforation (174) is connected with said pressure span (150) through at least one second channel (176).
5. according to the external gear pump (14) of claim 2 or 3, it is characterized in that, in said housing ring (72), between two first passages (172) and/or two second channels (176), have a dividing plate (178).
6. according to the external gear pump (14) of one of above claim; It is characterized in that; Said housing ring (72) is arranged between first housing member (66) and second housing member (68), and said housing ring (72) is fixing through being welded to connect (168) with respect to said first housing member (66) and/or said second housing member (68).
7. according to the external gear pump (14) of one of above claim, it is characterized in that said housing ring (72), said first housing member (66) and/or said second housing member (68) are through sintering, especially processed by welding agglomerated material.
8. the fuel injection system (10) that has external gear pump (14) according to one of above claim.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009047610.5 | 2009-12-08 | ||
DE200910047610 DE102009047610A1 (en) | 2009-12-08 | 2009-12-08 | External gear pump |
PCT/EP2010/065181 WO2011069713A2 (en) | 2009-12-08 | 2010-10-11 | External gear pump |
Publications (2)
Publication Number | Publication Date |
---|---|
CN102648350A true CN102648350A (en) | 2012-08-22 |
CN102648350B CN102648350B (en) | 2015-08-19 |
Family
ID=43554460
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201080055661.4A Expired - Fee Related CN102648350B (en) | 2009-12-08 | 2010-10-11 | External gear pump |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2510239A2 (en) |
CN (1) | CN102648350B (en) |
DE (1) | DE102009047610A1 (en) |
WO (1) | WO2011069713A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110998064A (en) * | 2017-06-16 | 2020-04-10 | 吉凯恩粉末冶金股份公司 | Pump assembly |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016224445A1 (en) | 2016-12-08 | 2018-06-14 | Robert Bosch Gmbh | gear pump |
FR3080892B1 (en) | 2018-05-04 | 2020-04-03 | Exoes | GEAR PUMP FOR FLUID CIRCULATION |
JP7124954B2 (en) * | 2019-03-08 | 2022-08-24 | 株式会社島津製作所 | helical gear pump or motor |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2440986A (en) * | 1943-03-06 | 1948-05-04 | Gen Motors Corp | Pump |
US3076413A (en) * | 1959-12-29 | 1963-02-05 | Parker Hannifin Corp | High pressure aircraft gear pump |
GB1113461A (en) * | 1964-07-31 | 1968-05-15 | Shimadzu Corp | Hydraulic fluid gear pump or motor |
BE1012051A6 (en) * | 1998-06-30 | 2000-04-04 | Z F Getriebe N V Sint Truiden | Cogwheel pump and variable transmission equipped with such a cogwheel pump |
JP2005337136A (en) * | 2004-05-27 | 2005-12-08 | Toyota Motor Corp | External gear pump |
US20050276714A1 (en) * | 2002-06-03 | 2005-12-15 | Klassen James B | Gear pump |
DE102007031901A1 (en) * | 2007-07-09 | 2009-01-15 | Schwäbische Hüttenwerke Automotive GmbH & Co. KG | Rotary pump e.g. vane pump, for use as supply pump in motor vehicle, has opening region formed such that peripheral cell region is obtained in overlap with sealing surface, while cell base near rotary axis is in overlap with opening region |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006056843A1 (en) | 2006-12-01 | 2008-06-05 | Robert Bosch Gmbh | delivery unit |
DE102008054751A1 (en) | 2008-12-16 | 2010-06-17 | Robert Bosch Gmbh | External gear pump for supplying of fuel in fuel-injection system of internal combustion engine, has two rotatable gear wheels which are engaged together, where bearing surface is arranged radially outward to gear wheel |
-
2009
- 2009-12-08 DE DE200910047610 patent/DE102009047610A1/en not_active Ceased
-
2010
- 2010-10-11 EP EP10765426A patent/EP2510239A2/en not_active Withdrawn
- 2010-10-11 WO PCT/EP2010/065181 patent/WO2011069713A2/en active Application Filing
- 2010-10-11 CN CN201080055661.4A patent/CN102648350B/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2440986A (en) * | 1943-03-06 | 1948-05-04 | Gen Motors Corp | Pump |
US3076413A (en) * | 1959-12-29 | 1963-02-05 | Parker Hannifin Corp | High pressure aircraft gear pump |
GB1113461A (en) * | 1964-07-31 | 1968-05-15 | Shimadzu Corp | Hydraulic fluid gear pump or motor |
BE1012051A6 (en) * | 1998-06-30 | 2000-04-04 | Z F Getriebe N V Sint Truiden | Cogwheel pump and variable transmission equipped with such a cogwheel pump |
US20050276714A1 (en) * | 2002-06-03 | 2005-12-15 | Klassen James B | Gear pump |
JP2005337136A (en) * | 2004-05-27 | 2005-12-08 | Toyota Motor Corp | External gear pump |
DE102007031901A1 (en) * | 2007-07-09 | 2009-01-15 | Schwäbische Hüttenwerke Automotive GmbH & Co. KG | Rotary pump e.g. vane pump, for use as supply pump in motor vehicle, has opening region formed such that peripheral cell region is obtained in overlap with sealing surface, while cell base near rotary axis is in overlap with opening region |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110998064A (en) * | 2017-06-16 | 2020-04-10 | 吉凯恩粉末冶金股份公司 | Pump assembly |
Also Published As
Publication number | Publication date |
---|---|
WO2011069713A2 (en) | 2011-06-16 |
WO2011069713A3 (en) | 2011-10-13 |
CN102648350B (en) | 2015-08-19 |
DE102009047610A1 (en) | 2011-06-09 |
EP2510239A2 (en) | 2012-10-17 |
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