WO2010057838A2 - Pompe à carburant pour moteurs à combustion interne - Google Patents

Pompe à carburant pour moteurs à combustion interne Download PDF

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Publication number
WO2010057838A2
WO2010057838A2 PCT/EP2009/065180 EP2009065180W WO2010057838A2 WO 2010057838 A2 WO2010057838 A2 WO 2010057838A2 EP 2009065180 W EP2009065180 W EP 2009065180W WO 2010057838 A2 WO2010057838 A2 WO 2010057838A2
Authority
WO
WIPO (PCT)
Prior art keywords
pump
fuel
drive shaft
fuel pump
polygon
Prior art date
Application number
PCT/EP2009/065180
Other languages
German (de)
English (en)
Other versions
WO2010057838A3 (fr
Inventor
Carsten Rudolph
Original Assignee
Thielert Aircraft Engines Gmbh Vertr. D. D. Insolvenzverwalter Dr. Bruno M. Kübler
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
Application filed by Thielert Aircraft Engines Gmbh Vertr. D. D. Insolvenzverwalter Dr. Bruno M. Kübler filed Critical Thielert Aircraft Engines Gmbh Vertr. D. D. Insolvenzverwalter Dr. Bruno M. Kübler
Priority to CA2747074A priority Critical patent/CA2747074A1/fr
Priority to EP09765055A priority patent/EP2359004A2/fr
Priority to CN2009801487002A priority patent/CN102239333A/zh
Priority to US13/130,219 priority patent/US20110223049A1/en
Publication of WO2010057838A2 publication Critical patent/WO2010057838A2/fr
Publication of WO2010057838A3 publication Critical patent/WO2010057838A3/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C15/0073—Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0076—Fixing rotors on shafts, e.g. by clamping together hub and shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—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
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
    • F16D1/101—Quick-acting couplings in which the parts are connected by simply bringing them together axially without axial retaining means rotating with the coupling
    • 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
    • F04C2240/20—Rotors
    • 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
    • F04C2240/60—Shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
    • F16D2001/102—Quick-acting couplings in which the parts are connected by simply bringing them together axially the torque is transmitted via polygon shaped connections

Definitions

  • the invention relates to a fuel pump, in particular prefeed pump for internal combustion engines, which comprises a gear pump with an impeller driven via a drive shaft, in particular for aircraft engines powered by aircraft fuel.
  • the fuel supply to the combustion chamber of aircraft engines operated in monorail technology with aircraft fuel is known to take place from a tank via a prefeed pump and a high-pressure pump to a common distributor pipe (rail) connected to the individual cylinders. Since a failure of a fuel pump inevitably leads to engine downtime, an extremely high reliability is required especially in aircraft engines.
  • the reliability and the maximum service life of the fuel pumps are limited in particular by the fact that they are lubricated with the delivered fuel and the bearings and sliding surfaces are more or less heavily loaded in accordance with the lubricity of the fuel.
  • the service life of the fuel pumps is thus significantly influenced by the lubricating properties of the respective fuel. Since the diesel engines used on aircraft are operated with a kerosene-based aviation fuel with significantly lower lubricity compared with diesel fuel, the service life of the fuel pumps is particularly low in this case.
  • a prefeed pump designed as a gear pump
  • its driven impeller drive gearwheel
  • a spline toothing to a drive shaft whose external toothing present at one shaft end (External profile) positively engages in an existing on the drive gear of the prefeed pump internal toothing (inner profile).
  • the prefeed pump designed in this way especially when used for a diesel engine powered by aircraft fuel, has only a short service life, since the drive shaft and the driven impeller, and consequently also the pump housing, are subject to high wear and thus the prefeed pump is completely complete after a short operating time must be replaced.
  • DE 100 14 548 A1 describes a gear pump for diesel fuel in which the positive connection between the drive shaft and a pump gear is produced by a flattened circle geometry or by a profiling provided with recesses and projections.
  • the invention is therefore the object of the pre-feed pump upstream of the high-pressure pump in such a way that even with the use of fuels with reduced lubricity a long life is guaranteed.
  • the essence of the invention is that the positive connection between the drive shaft and the driven pump wheel is produced by a convex polygon contour formed on the drive shaft and on the impeller
  • the drive shaft has a coupling disk in the form of a triangular shaped polygon with outwardly curved in a certain radius side surfaces and outwardly rounded corner regions, while formed in the driven pump impeller in shape and size with the coupling disk recess, so that the coupling disc engages accurately in the recess.
  • connection between the drive shaft and the pump wheel produced via two interlocking interlocking polygons ensures reliable power transmission and results in a significant reduction in wear on the positive connection point and thus the drive shaft, the pump wheels and the pump housing and thus the Life of the fuel provided for the promotion of fuel with low lubricity fuel pump increases and their essential for flight operation indispensable reliability is improved.
  • the positively interlocking convexly curved polygon contours can also be embodied as a polygon, for example as a tetragon.
  • Figure 1 is a perspective view of a feed pump designed as a gear pump in disassembled state.
  • FIG. 2 is a front view of the drive shaft formed with a coupling disc formed as a polygon;
  • FIG. and Fig. 3 is a front view of the drive gear of
  • Pre-feed pump with a trained as a polygon inner profile.
  • the prefeed pump shown in FIG. 1 in the disassembled state is designed as a gear pump and comprises a pump housing 1, in which a driven first impeller 2 and a second impeller 3 are mounted.
  • a driven drive shaft 4 is mounted in the pump housing 1.
  • An integrally formed on the drive shaft 4 coupling plate 5 has the shape of a convex, regular, here triangular polygon, that is, a triangle with three curved side edges of equal length and equal internal angles.
  • the coupling disk 5 engages in a recess 6 formed in the driven pump wheel 2, the contour of which, shaped as a polygon, coincides with the contour of the coupling disk 5.
  • the pump housing 1 is closed with the interposition of a sealing ring 8 by a housing cover 9, which is fastened by means of cylinder screws 7.
  • the polygonal outer contour of the coupling disc 5 and provided in the driven impeller 2 recess 6 is shown in more detail in Figures 2 and 3.
  • the regular triangular polygon of the coupling disc 5 and the recess 6 has a circumference with the diameter du and an inscribed circle with the diameter di.
  • the polygon has no straight side edges (side surfaces), but is convex, that is, with convex, outwardly curved in radius R s side surfaces and rounded in radius R E corner regions of the polygon of the coupling disc 5 and the recess. 6
  • the maximum width of the polygon of the recess 6 and the coupling disc 5 is designated in the drawing by W.
  • the wear of the first and also the second pump impeller and the drive shaft and the housing can be significantly reduced and the service life of the prefeed pump designed as a gear pump even when using a fuel be increased by three times with low lubricity.
  • the positive connection can also be formed by regular convex polygons with more than three corners such as a tetragon or pentagon and be applied to other fuel pumps with rotating pump wheels.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Rotary Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

Sur une pompe à carburant, en particulier la pompe d'alimentation envoyant du carburant pour avion à la pompe à haute pression, la liaison avec complémentarité de forme entre l'arbre d'entraînement (4) et la roue de pompe entraînée (2) est formée par un contour polygonal régulier, convexe et triangulaire réalisé sur ceux-ci, ayant des surfaces latérales et d'angle arrondies. De ce fait, les phénomènes d'usure qui s'expliquent par le faible effet lubrifiant du carburant pour avion à base de kérosène sont réduits et la durée de vie de la pompe à carburant est augmentée.
PCT/EP2009/065180 2008-11-21 2009-11-13 Pompe à carburant pour moteurs à combustion interne WO2010057838A2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA2747074A CA2747074A1 (fr) 2008-11-21 2009-11-13 Pompe a carburant pour moteurs a combustion interne
EP09765055A EP2359004A2 (fr) 2008-11-21 2009-11-13 Pompe à carburant pour moteurs à combustion interne
CN2009801487002A CN102239333A (zh) 2008-11-21 2009-11-13 内燃发动机的燃料泵
US13/130,219 US20110223049A1 (en) 2008-11-21 2009-11-13 Fuel Pump For Internal Combustion Engines

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008043991.6 2008-11-21
DE102008043991A DE102008043991A1 (de) 2008-11-21 2008-11-21 Kraftstoffpumpe für Verbrennungsmotoren

Publications (2)

Publication Number Publication Date
WO2010057838A2 true WO2010057838A2 (fr) 2010-05-27
WO2010057838A3 WO2010057838A3 (fr) 2010-09-10

Family

ID=42114315

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/065180 WO2010057838A2 (fr) 2008-11-21 2009-11-13 Pompe à carburant pour moteurs à combustion interne

Country Status (6)

Country Link
US (1) US20110223049A1 (fr)
EP (1) EP2359004A2 (fr)
CN (1) CN102239333A (fr)
CA (1) CA2747074A1 (fr)
DE (1) DE102008043991A1 (fr)
WO (1) WO2010057838A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104074741B (zh) * 2013-03-26 2017-09-29 德昌电机(深圳)有限公司 流体泵
FR3013406A1 (fr) * 2013-11-15 2015-05-22 Peugeot Citroen Automobiles Sa Agencement d'accouplement mecanique d'une piece d'entrainement a une piece a entrainer, pompe d'essence d'un vehicule automobile ainsi que vehicule automobile, comportant un tel agencement
BE1030550B1 (fr) * 2022-05-23 2023-12-18 Safran Aero Boosters Accouplement par profils polygonaux de pompes dans un groupe de lubrification

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT185926B (de) * 1953-05-16 1956-06-25 Saurer Ag Adolph Gegossener Rotor für Drehkolbenverdichter
GB1174066A (en) * 1966-12-31 1969-12-10 Otto Eckerle Improvements in and relating to Driving Gears for Internal Gear Pumps
US4340317A (en) * 1981-05-07 1982-07-20 Northern Research & Engineering Corp. Splineless coupling means
EP0098777A2 (fr) * 1982-07-01 1984-01-18 The Bendix Corporation Dispositif d'accouplement pour éléments menant et mené
DE3413773C1 (de) * 1984-04-12 1985-06-27 Danfoss A/S, Nordborg Hydraulische Flügelzellenmaschine
DE3940314A1 (de) * 1988-12-08 1990-06-13 Zahnradfabrik Friedrichshafen Antriebseinrichtung mit einer wellen-naben-verbindung
EP0845614A2 (fr) * 1996-11-27 1998-06-03 Ford Global Technologies, Inc. Joint polygonal d'un moyeu avec un arbre.
EP0887122A2 (fr) * 1997-06-24 1998-12-30 Elektra Beckum Aktiengesellschaft Dispositif de nettoyage à l'eau sous haute pression
EP0903465A1 (fr) * 1997-09-19 1999-03-24 Asea Brown Boveri AG Connexion entre roue de compresseur et arbre pour turbomachines à haute vitesse
DE29916106U1 (de) * 1999-09-15 2001-01-25 Asf Thomas Ind Gmbh Pumpe mit Pumpengehäuse
DE10014548A1 (de) * 2000-03-23 2001-09-27 Bosch Gmbh Robert Zahnradförderpumpe
EP1182371A2 (fr) * 2000-08-25 2002-02-27 Ingersoll-Rand Company Accouplement de forme polygone conique
DE102005021597A1 (de) * 2005-05-10 2006-11-16 Siemens Ag Kraftstoffpumpe

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US1669411A (en) * 1926-08-28 1928-05-15 Duston And Clark Engineering C Rolling mill
US2880676A (en) * 1956-03-26 1959-04-07 Succop Anna Louise Motor and pump combination
US3196800A (en) * 1962-12-13 1965-07-27 Parker Hannifin Corp Gear pump
US3372646A (en) * 1967-03-20 1968-03-12 Borg Warner Contaminant resistant fluid supply system
DE3538950A1 (de) * 1984-11-23 1986-06-05 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Spinnpumpe, insbesondere zahnradpumpe
CN87200648U (zh) * 1987-01-14 1987-11-25 田澍藩 内啮合外旋弦线转子泵
JP3667034B2 (ja) * 1996-07-17 2005-07-06 光洋精工株式会社 電動ポンプ
DE10394335B4 (de) * 2003-09-11 2014-07-31 Siemens Aktiengesellschaft Dreiphasige Synchronmaschine mit Permanentmagnetläufer mit Induktionskäfig
JP2005146994A (ja) * 2003-11-17 2005-06-09 Hitachi Ltd オイルポンプ
JP4545072B2 (ja) * 2005-09-09 2010-09-15 本田技研工業株式会社 ポンプのロータ装置
JP5076484B2 (ja) * 2006-12-19 2012-11-21 株式会社ジェイテクト 電動ポンプユニット及び電動オイルポンプ
HUE025876T2 (en) * 2007-03-20 2016-04-28 Oerlikon Textile Gmbh & Co Kg Gear Pump

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT185926B (de) * 1953-05-16 1956-06-25 Saurer Ag Adolph Gegossener Rotor für Drehkolbenverdichter
GB1174066A (en) * 1966-12-31 1969-12-10 Otto Eckerle Improvements in and relating to Driving Gears for Internal Gear Pumps
US4340317A (en) * 1981-05-07 1982-07-20 Northern Research & Engineering Corp. Splineless coupling means
EP0098777A2 (fr) * 1982-07-01 1984-01-18 The Bendix Corporation Dispositif d'accouplement pour éléments menant et mené
DE3413773C1 (de) * 1984-04-12 1985-06-27 Danfoss A/S, Nordborg Hydraulische Flügelzellenmaschine
DE3940314A1 (de) * 1988-12-08 1990-06-13 Zahnradfabrik Friedrichshafen Antriebseinrichtung mit einer wellen-naben-verbindung
EP0845614A2 (fr) * 1996-11-27 1998-06-03 Ford Global Technologies, Inc. Joint polygonal d'un moyeu avec un arbre.
EP0887122A2 (fr) * 1997-06-24 1998-12-30 Elektra Beckum Aktiengesellschaft Dispositif de nettoyage à l'eau sous haute pression
EP0903465A1 (fr) * 1997-09-19 1999-03-24 Asea Brown Boveri AG Connexion entre roue de compresseur et arbre pour turbomachines à haute vitesse
DE29916106U1 (de) * 1999-09-15 2001-01-25 Asf Thomas Ind Gmbh Pumpe mit Pumpengehäuse
DE10014548A1 (de) * 2000-03-23 2001-09-27 Bosch Gmbh Robert Zahnradförderpumpe
EP1182371A2 (fr) * 2000-08-25 2002-02-27 Ingersoll-Rand Company Accouplement de forme polygone conique
DE102005021597A1 (de) * 2005-05-10 2006-11-16 Siemens Ag Kraftstoffpumpe

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"DIN32711" DIN-NORM, DIN (DEUTSCHES INSTITUT FÜR NORMUNG, 1. März 1979 (1979-03-01), Seiten 1-3, XP008090971 *
"DIN32712" DIN-NORM, DIN (DEUTSCHES INSTITUT FÜR NORMUNG, 1. März 1979 (1979-03-01), Seiten 1-3, XP008090970 *

Also Published As

Publication number Publication date
US20110223049A1 (en) 2011-09-15
CA2747074A1 (fr) 2010-05-27
CN102239333A (zh) 2011-11-09
EP2359004A2 (fr) 2011-08-24
WO2010057838A3 (fr) 2010-09-10
DE102008043991A1 (de) 2010-05-27

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