CN102257275B - Internal gear pump and internal combustion engine and for the fuel injection system of internal combustion engine - Google Patents

Internal gear pump and internal combustion engine and for the fuel injection system of internal combustion engine Download PDF

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Publication number
CN102257275B
CN102257275B CN200980150907.3A CN200980150907A CN102257275B CN 102257275 B CN102257275 B CN 102257275B CN 200980150907 A CN200980150907 A CN 200980150907A CN 102257275 B CN102257275 B CN 102257275B
Authority
CN
China
Prior art keywords
internal
gear pump
rotor
internal gear
axle
Prior art date
Application number
CN200980150907.3A
Other languages
Chinese (zh)
Other versions
CN102257275A (en
Inventor
H·西格尔
M·迈尔
J·阿诺德
Original Assignee
罗伯特·博世有限公司
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
Priority to DE200810054753 priority Critical patent/DE102008054753A1/en
Priority to DE102008054753.0 priority
Application filed by 罗伯特·博世有限公司 filed Critical 罗伯特·博世有限公司
Priority to PCT/EP2009/065412 priority patent/WO2010072478A2/en
Publication of CN102257275A publication Critical patent/CN102257275A/en
Application granted granted Critical
Publication of CN102257275B publication Critical patent/CN102257275B/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/008Prime movers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C19/00Sealing arrangements in rotary-piston machines or engines
    • F01C19/005Structure and composition of sealing elements such as sealing strips, sealing rings and the like; Coating of these elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0003Sealing arrangements in rotary-piston machines or pumps
    • F04C15/0034Sealing arrangements in rotary-piston machines or pumps for other than the working fluid, i.e. the sealing arrangements are not between working chambers of the machine
    • F04C15/0038Shaft sealings specially adapted for rotary-piston machines or pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0061Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C15/0073Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00Rotary-piston machines or pumps
    • F04C2/08Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10Rotary-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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00Rotary-piston machines or pumps
    • F04C2/08Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082Details specially related to intermeshing engagement type machines or pumps
    • F04C2/084Toothed wheels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00Manufacture
    • F04C2230/60Assembly methods
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00Components
    • F04C2240/60Shafts

Abstract

The present invention relates to the internal gear pump (14) that one has the internal rotor (100) that can be rotated around driving axis (104). The present invention proposes, this internal rotor (100) can drive by the axle (48) that can support or be bearing in internal combustion engine (12), this axle have can rotate around this driving axis (104) of this internal rotor (100) for driving the axle section (114) of this internal rotor (100).

Description

Internal gear pump and internal combustion engine and for the fuel injection system of internal combustion engine
Technical field
The present invention relates to a kind of internal gear pump.
Background technology
By DE102006056844A1 known a kind of internal gear pump for delivery of hydraulic fluid,It has a gear mesh and at least two pressure exports on the pressure side at internal gear pump. In this wayCan change conveying capacity by the internal gear pump only with a small amount of member.
Summary of the invention
Task of the present invention is, a kind of internal gear pump is provided, and it needs as far as possible little structure spaceAnd can manufacture with the least possible member.
This task will solve by a kind of internal gear pump according to the present invention. In addition explanation belowAnd can obtain the feature important for the present invention in accompanying drawing, wherein these features both can individually can be not yetSame in combination as emphasis of the present invention, and without again this being pointed out clearly.
According to the present invention, proposition one has at least one can be in driving axis be driven rotatablyThe internal gear pump of rotor, wherein, this internal rotor is arranged in and is bearing in internal combustion engine in the mode being drivenThe extension of axle on, this axle have can rotate around this driving axis of this internal rotor for driving thisThe axle section of internal rotor, wherein: this internal gear pump has one in low-pressure side and is connected with inputLow-pressure channel, internal gear pump comprises a high-pressure channel being connected with output on the pressure side, this is interiorGear pump also comprises a pressure limiting valve, in the time exceeding a predetermined operating pressure by this pressure limiting valveCan between high-pressure channel and low-pressure channel, form fluid and be connected, this pressure limiting valve is arranged on a connectionIn passage, this interface channel extends between described high-pressure channel and described low-pressure channel.
Drive rotatably by the axle section that can support or be supported in the axle in internal combustion engine withInternal rotor needs especially little structure space by making according to internal gear pump of the present invention. This internal gear pump is logicalOften do not need independent driving shaft/bolster of presetting. Can cancel thus the motion biography taking up space is setDelivery device or coupling device (for example belt drive unit) are delivered to motion by a drive unitNecessity on independent driving shaft/bolster. And it is basic diametrically according to internal gear pump of the present inventionOn only need a structure space around described axle section. In the axial direction of axle, may only produce oneThe unconspicuous prolongation of overall dimension of phase combustion motor.
In the possibility of cancelling independent driving shaft and can cancel other motion transfering device not only meansThe minimizing of the number of components of gear pump own, and reduced formed by internal combustion engine and internal gear pump wholeThe number of components of individual unit.
Described axle relates to camshaft or a bent axle or an equilibrium of internal combustion engine in an advantageous mannerAxle. Rotatablely moving of such axle can directly be transmitted into rotatablely moving of internal rotor.
Preferably, axle section is made up of a free axis end looking up from the axle of axle, and this freelyShaft end can with or be connected with internal rotor. Can consider in the case, keep internal combustion engine housingIn the situation of size, make its axle extend, stretch out and be somebody's turn to do to make its free end exceed internal combustion engine housingThe end of stretching out can be used as driving the axle section of internal rotor.
In addition preferably, shaft end can be introduced into or introduce in the centre bore of internal rotor. Relative oneIndividual is also in shaft end is imported into being connected of front side and internal rotor of possible shaft end in principleIn the centre bore of rotor, there is its advantage, the structure space on can saving axially. This can realize internal toothThe compact especially configuration of the housing of wheel pump.
When the driving axis coaxial line ground of direction of engagement for connecting axle and internal rotor and internal rotorWhen extension, can obtain the especially simply assembling of internal gear pump.
This internal gear pump of form of implementation according to the present invention is configured crescent internal gear pump. ThusA kind of compact internal gear pump with particularly preferred volumetric efficiency can be provided.
Be configured without half moon-shaped internal tooth according to this internal gear pump of the form of implementation of a conversion of the present inventionWheel pump, it also can realize special compact structure mode.
A particularly preferred form of implementation of the present invention is: the eccentric twelve Earthly Branches of the relative outer rotor of internal rotorHold and there is an external tooth part engaging with the interior toothed portion of outer rotor; And the interior toothed portion of outer rotorForm by the roller being rotatably supported on outer rotor. To improve in this way by external tooth part withThe sealing function that the cooperation of interior toothed portion realizes. Such device also can be called as " planet rotorGroup ". In the time that roller has roller thin tooth part and when the external tooth part of internal rotor be applied one corresponding inWhen rotor thin tooth part, can realize the further improvement of sealing function.
The invention still further relates to the internal combustion engine with above-mentioned internal gear pump.
In addition the invention still further relates to comprise above-mentioned internal gear pump, for the fuel injection system of internal combustion engine.
Hereinafter with reference to accompanying drawing, form of implementation of the present invention is described.
Brief description of the drawings
Fig. 1: there is an internal combustion engine and a fuel injection system for delivery of the internal gear pump of fuelSketch plan;
Fig. 2: amplify represent according to the internal gear pump of Fig. 1 side view of dissecting;
Fig. 3: the view of corresponding Fig. 2 in the time that internal gear pump is arranged on internal combustion engine;
Fig. 4: according to the top view of the first form of implementation of the gear arrangement of the internal gear pump of Fig. 1; And
Fig. 5: according to the top view of another form of implementation of the gear arrangement of the internal gear pump of Fig. 1.
Detailed description of the invention
In Fig. 1, always indicate with label 10 for the fuel to internal combustion engine 12 feed fuelsSpraying system comprises an internal gear pump 14.
Fuel injection system 10 has the tank 16 of a deposit fuel. By a pre-delivery pump18 make fuel be transported in a low pressure line 22 by tank 16, this pre-delivery pump preferably byAdjustable drive unit, especially the drive unit of motor 20 forms drives. Pass throughCan make fuel injection system 10 for the use of an adjustable drive unit of pre-delivery pump 18Conveying capacity is adjusted, so that can reduce the transport loss producing by the conveying of fuel excess quantity, shouldExcess quantity must be transmitted back to again prepares in container 16.
For the fuel pressure limiting in low pressure line 22 is provided with a low voltage limit pressure valve 24, when exceeding oneWhen individual predetermined maximum pressure, making fuel lead back deposit by low pressure line 22 by this low voltage limit pressure valve holdsIn device 16.
Low pressure line 22 leads to an input 26 of internal gear pump 14. This internal gear pump is defeated to passing throughThe fuel that enters end 26 inputs loads high pressure. Be loaded the fuel of high pressure by one of internal gear pump 14Output 28 arrives a pressure duct 30, and this pressure duct imports the fuel of rail 32 forms and receivesAcquisition means. Rail 32 provides the fuel of pressurization to injection valve 34. These injection valves 34 respectively configure to internal combustionA combustion chamber of machine 12 and can make fuel directly be ejected in combustion chamber.
Pressure in rail 32 detects by a pressure sensor 36. Corresponding with the pressure detectingVoltage signal can flow to a control device 40 by a data conductor 38. Control device 40 is borrowedHelp a pilot 42 and motor 20 to be coupled.
The internal combustion engine housing 44 that internal combustion engine 12 comprises a section and represents, it is for example a cylinder headForm. Internal combustion engine housing 44 has an outside surface of shell 46. Internal combustion engine 12 also comprises oneIndividual axle 48, the especially axle of a camshaft form, this axle can be bearing in internal combustion engine rotationally around axis 50On housing 44.
In internal combustion engine housing 44, be provided with a housing bore 52, this hole is passed by axle 48, so that oneShaft end 54 stretches out surface of shell 46 and extends to the periphery of internal combustion engine 12.
Internal gear pump 14 has the shell body 56 of a tank shape, and this shell body is especially by a weldingRing flange 58 be connected with internal combustion engine housing 44, for example connect by screw. Shell body 56 hasA housing projection 60 extending towards internal combustion engine 12, this housing projection is inserted into internal combustion engineIn 12 housing bore 52. It is circular housing aperture that housing projection 60 has its cross section62, this aperture allows axle 48 to penetrate.
The shell body 56 of internal gear pump 14 and internal combustion engine housing 44 are by an annular sealing ring 64Reciprocally sealing.
In shell body 56, be provided with multiple housing parts, the first housing parts 66, one are adjacentThe second housing parts 68 and the 3rd housing parts 70 that plays case lid effect. The 3rd housing parts70 weld mutually with shell body 56. Preferably, housing parts 66,68 and 70 has and is parallel to each otherPlane, thus each housing parts forms the sealing surface of metal by these planes. In the case can be byThe 3rd housing parts 70 produces a pressure, and this pressure makes housing parts 66 and 68 be pressed into shellIn body 56.
The first housing parts 66 and the second housing parts 68 are for limiting the pump of receiving chamber 72 formsChamber, arranges a geared system 74 therein. This geared system 74 forms the real of internal gear pump 14Supply unit. Geared system 74 is placed on the first housing parts 66 and the second housing section in the axial directionBetween part 68. The first housing parts 66 forms a radial support of geared system 74 simultaneously.
Internal gear pump 14 has a low-pressure channel 76 being connected with input 26 in low-pressure side, shouldLow-pressure channel is formed in the 3rd housing parts 70. Low-pressure channel 76 passes into one and is formed inSuction waist pipe 78 in two housing parts 68. The first housing parts 66 has one and suction waist pipe 78The corresponding anti-waist pipe 80 of form.
Internal gear pump 14 comprises a high-pressure channel 82 being connected with output 28 on the pressure side, shouldHigh-pressure channel is formed in the 3rd housing parts 70. High-pressure channel 82 and one are formed in secondPressure waist pipe 84 in housing parts 68 is connected, and is provided with one and pressure in the first housing parts 66The corresponding anti-waist pipe 86 of power waist pipe 84 form. Can reach by anti-waist pipe 80 and 86: geared system74 carry out on-load pressure equably from both sides.
In addition internal gear pump 14 also comprises a pressure limiting valve 88, when exceeding a predetermined operating pressureIn time, can form fluid by this pressure limiting valve and is connected between high-pressure channel 82 and low-pressure channel 76. Pressure limitingValve 88 is arranged in an interface channel 90, and this interface channel extends in high-pressure channel 82 and low pressureBetween passage 76. Pressure limiting valve 88 have one be pressed into 92, one of valve seats in interface channel 90 withThe interactional valve body 94 of valve seat 92 and a valve spring 96, valve body 94 is pressed in valve seat by this valve springOn 92. Interface channel 90 with blind hole form form and in its flared end by a plug being pressed into 98Sealing.
Input 26 and output 28 and pressure limiting valve 88 are combined in the 3rd housing parts and just allowCancel to a great extent additional seal and make thus the number of components of internal gear pump 14 subtract furtherFew.
Geared system 74 has an internal rotor 100, and the relative outer rotor 102 of this internal rotor is established prejudiciallyPut (referring to Fig. 2 and 4). Internal rotor 100 can be around a configuration driving axis 104 to internal rotor 100Rotation. Axis 50 coaxial lines of driving axis 104 and axle 48.
Internal rotor 100 has a centre bore 106, can import therein the shaft end 54 (ginseng of axle 48See Fig. 3).
Axle 48 has a primary section 108 extending in internal combustion engine housing 44. In primary section 108Above connecting 110, one of shaft parts towards the direction of internal gear pump 14 is especially the axle of ball formation112, one axle sections 114 of spigot surface and one arrange fore axle journal 116.
Shaft part 110 is through the housing aperture 62 of shell body 56. For relative internal gear pump 14 seal shafts48 are provided with a sealing device 118, and it is especially configured the form of a radial direction seal ring. SealingDevice is arranged in housing projection 60 and comprises the first sealing lip 120 that summary represents, byIt can prevent that oil from entering into internal gear pump 14 by the interior space of internal combustion engine 12. This outer sealing device 118Also comprise the second sealing lip 122, can prevent that by it fuel is discharged to by the interior space of internal gear pump 14In the interior space of internal combustion engine 12.
Axle spigot surface 112 is bearing in a columniform bearing-surface 124, and this bearing-surface is formed inOn the first housing parts 66. On bearing-surface 124, connecting determining that a relative bearing-surface 124 tiltsMiddle 126, by this fixed middle face, axle spigot surface 112 is imported in bearing-surface 124 and become easily and (joinSee Fig. 3).
Axle section 114 for example has a multiple edge body profile, four bank or ridge profile especially. This profile with inThe respective profile of the centre bore 106 of rotor 100 cooperatively interacts. In this way can axle section 114 withBetween internal rotor 100, forming the sealed anti-torsion of shape connects.
For axle 48 is engaged with internal gear pump 14, make axle 48 and the mutual earth's axis of internal gear pump 14In direction of engagement with 128 and 130 instructions, move. Direction of engagement 128 and 130 and internal rotor 100Driving axis 104 coaxial lines.
It is cylindrical and for import the phase of internal gear pump 14 at shaft end 54 that axle journal 116 is preferably configuredBetween auxiliary as further inserting. In the simplest situation, internal gear pump 14 is enclosed within to free axle headIn portion 54. Guiding by axle spigot surface 112 on bearing-surface 124, by the effect reaching in determining, is borrowedHelp this fixed middle effect can prevent internal rotor 100. Clamping. During axle 48 is connected with internal rotor 100Prevent like this damage of sealing device 118, make shaft part 110 import housing aperture 62 in and withFirst sealing lip 120 and 122 inserts axle journal 116 internal rotor 100 center before forming and coordinatingIn hole 100.
In Fig. 4, represent the geared system 74 of internal gear pump 14. On bolster the first housing parts 68Outer rotor 102 can rotate around outer rotor axis 132; The driving axis 104 of this axis and internal rotor 100Extend abreast. The relative outer rotor axis 132 of driving axis 104 staggers, so that internal rotor 100 phasesOuter rotor 102 is supported prejudicially.
Outer rotor 102 has an interior toothed portion 134, the external tooth part 136 of it and internal rotor 100Cooperatively interact. The interior toothed portion 134 of outer rotor 102 consists of multiple rollers 138, and they respectively supportIn the bag shape notch 140 being located on outer rotor 102.
Roller 138 has roller serration 142, and roller serration is meshed with internal rotor serration 144, internal rotor serrationBe superimposed upon on internal rotor 100.
Can on driving direction 146, drive rotationally internal rotor 100 by axle 48. By internal rotor 100With the engagement of roller 138, these rollers also rotated and rotating accordingly with driving direction 146 thusIn direction, drive outer rotor 102. Can make in this way to input by the input 26 of internal gear pump 14Fuel is compressed on the pressure side 150 and be transported to the output 28 of internal gear pump 14 by aspirating side 148.
Also can use a geared system 74 that only comprises an internal rotor 100 and an outer rotor 102Replace the geared system 74 shown in Fig. 4 (" planet rotor group "), the wherein internal tooth of outer rotor 102Part 134 is integrally formed with this outer rotor. Such internal gear pump 14 also can be called as without crescentInternal gear pump.
Also can use in conversion the geared system 74 shown in Fig. 5 to this, it also comprises an internal rotor100 and an outer rotor 102, separate suction side 148 but be wherein provided with crescent parts 152With on the pressure side 150. Such internal gear pump 14 also can be called as crescent internal gear pump.
Preferably, at least some members of internal gear pump 14 can prototype ground, especially less by instrument ground systemMake. For example housing parts 66,68 and 70 and/or the gear of geared system 74 can be sintered. ShellBody 56 and/or ring flange 58 can be configured sheet metal profiled member in an advantageous manner.
When internal gear pump has oneself a driving shaft/bolster, not by the axle 48 of internal combustion engineWhile driving, each feature of internal gear pump 14 described above is also favourable. These features are outstandingIt relates to: have the structure of the housing of shell body 56 and housing parts 66,68 and 70, delivery pump 18Conveying capacity regulate possibility, input 26 and/or output 28 and/or pressure limiting valve 88 are combined inIn housing parts 70 and the configuration of geared system 74.

Claims (10)

1. having at least one can be around driving axis (104) internal gear pump (14) of driven internal rotor (100) rotatably, wherein, this internal rotor (100) is arranged in the mode being driven on the extension of the axle (48) being bearing in internal combustion engine (12), this axle have can rotate around this driving axis (104) of this internal rotor (100) for driving the axle section (114) of this internal rotor (100), it is characterized in that: this internal gear pump (14) has a low-pressure channel (76) being connected with input (26) in low-pressure side, internal gear pump (14) comprises a high-pressure channel (82) being connected with output (28) on the pressure side, this internal gear pump (14) also comprises a pressure limiting valve (88), in the time exceeding a predetermined operating pressure, can between high-pressure channel (82) and low-pressure channel (76), form fluid by this pressure limiting valve is connected, this pressure limiting valve (88) is arranged in an interface channel (90), this interface channel extends between described high-pressure channel (82) and described low-pressure channel (76).
2. internal gear pump according to claim 1 (14), is characterized in that: this axle (48) is camshaft or bent axle or the balanced axle of internal combustion engine (12).
3. internal gear pump according to claim 1 and 2 (14), it is characterized in that: this axle section (114) is made up of an axle from this axle (48) shaft end (54) that looks up freely, and this shaft end can be connected with this internal rotor (100) or be connected with this internal rotor (100).
4. internal gear pump according to claim 3 (14), is characterized in that: this shaft end (54) has been introduced in the centre bore (106) of this internal rotor (100).
5. internal gear pump according to claim 1 and 2 (14), it is characterized in that: extend collinearly with the direction of engagement (128,130) of this internal rotor (100) and the driving axis (104) of this internal rotor (100) for connecting this axle (48).
6. internal gear pump according to claim 1 and 2 (14), is characterized in that: this internal gear pump is configured crescent internal gear pump.
7. internal gear pump according to claim 1 and 2 (14), is characterized in that: this internal gear pump is configured without half moon-shaped internal gear pump.
8. according to the internal gear pump (14) described in above claim 1 or 2, it is characterized in that: this internal rotor (100) relatively outer rotor (102) is supported prejudicially and has the external tooth part (136) engaging with the interior toothed portion (134) of this outer rotor (102), and this interior toothed portion (134) of this outer rotor (102) consists of the roller (138) being rotatably supported on this outer rotor (102).
9. internal combustion engine (12), has according to the internal gear pump described in any one in claim 1 to 8 (14).
10. for the fuel injection system (10) of internal combustion engine (12), comprise according to the internal gear pump described in any one in claim 1 to 8 (14).
CN200980150907.3A 2008-12-16 2009-11-18 Internal gear pump and internal combustion engine and for the fuel injection system of internal combustion engine CN102257275B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE200810054753 DE102008054753A1 (en) 2008-12-16 2008-12-16 Internal gear pump
DE102008054753.0 2008-12-16
PCT/EP2009/065412 WO2010072478A2 (en) 2008-12-16 2009-11-18 Internal gear pump

Publications (2)

Publication Number Publication Date
CN102257275A CN102257275A (en) 2011-11-23
CN102257275B true CN102257275B (en) 2016-05-04

Family

ID=42168355

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200980150907.3A CN102257275B (en) 2008-12-16 2009-11-18 Internal gear pump and internal combustion engine and for the fuel injection system of internal combustion engine

Country Status (4)

Country Link
EP (1) EP2379891A2 (en)
CN (1) CN102257275B (en)
DE (1) DE102008054753A1 (en)
WO (1) WO2010072478A2 (en)

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CN103338989A (en) * 2011-01-31 2013-10-02 罗伯特·博世有限公司 Double internal gear wheel pump
JP5916078B2 (en) * 2011-12-07 2016-05-11 株式会社ジェイテクト Inscribed gear pump

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EP1438507B1 (en) * 2001-10-13 2007-04-11 Robert Bosch Gmbh Internal gear pump
CN1616825A (en) * 2003-11-11 2005-05-18 上海师范大学 Cycloidal pin gear hydraulic pump
CN101082336A (en) * 2007-06-15 2007-12-05 王晓忻 internal gear rotary pump or motor

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DE102008054753A1 (en) 2010-06-17
WO2010072478A2 (en) 2010-07-01
WO2010072478A3 (en) 2010-12-16
CN102257275A (en) 2011-11-23
EP2379891A2 (en) 2011-10-26

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