CN102239333A - Fuel pump for internal combustion engines - Google Patents

Fuel pump for internal combustion engines Download PDF

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Publication number
CN102239333A
CN102239333A CN2009801487002A CN200980148700A CN102239333A CN 102239333 A CN102239333 A CN 102239333A CN 2009801487002 A CN2009801487002 A CN 2009801487002A CN 200980148700 A CN200980148700 A CN 200980148700A CN 102239333 A CN102239333 A CN 102239333A
Authority
CN
China
Prior art keywords
pump
gear
fuel
polygonal
live axle
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.)
Pending
Application number
CN2009801487002A
Other languages
Chinese (zh)
Inventor
卡斯腾·入多鲁夫
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.)
THIELERT AIRCRAFT ENGINES GmbH
Original Assignee
THIELERT AIRCRAFT ENGINES GmbH
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 filed Critical THIELERT AIRCRAFT ENGINES GmbH
Publication of CN102239333A publication Critical patent/CN102239333A/en
Pending 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
    • 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

Abstract

The invention relates to a fuel pump, especially the prefeed pump for feeding aircraft fuel to the high pressure pump, wherein the form-fit connection between the drive shaft (4) and the driven impeller (2) is produced by a regular, convex, triangular polygonal contour having rounded-off lateral faces and corner faces, the drive shaft and the impeller being provided with said polygonal contour. In this manner, the wear resulting from the poor lubricating power of the kerosene-based aircraft fuel can be reduced and the service life of the fuel pump can be increased.

Description

The petrolift of explosive motor
Technical field
The present invention relates to a kind of petrolift, particularly relate to a kind of pre-feed pump of explosive motor, constitute, be highly suitable for using the diesel engine of flight fuel work by being equipped with by the angle of rake gear pump of the pump of drive shaft.
Background technique
As everyone knows, using the fuel supply of the firing chamber of the airplane engine of rail technical work altogether, is that the aircraft fuel in the fuel tank is passed through a pre-feed pump and a high-pressure service pump, is transported to the shared distribution duct (track) that respectively is connected to individual cylinder.Because the fault of petrolift undoubtedly can cause motor to quit work, so ad hoc requirement flight motor has extreme high reliability.The reliability of petrolift and maximum working time are subject to following situation especially, lubricate because of it leans on the fuel that is transmitted, thereby the carrying of bearing and slip surface lubricating ability just big or small and fuel are associated.The life-span of petrolift thereby meeting are owing to the lubrication property of each fuel be subjected to decisive influence.Be to use flight fuel based on kerosene because be used for the diesel engine of aircraft, its lubricating ability significantly is lower than diesel fuel, and therefore the operating life of petrolift is also especially short in this case.
Be designed under the situation of gear pump at pre-feed pump, the pump gear of described pre-feed pump (actuation gear) is connected to live axle by the toothing of splined shaft, and its external tooth (exterior contour) that is arranged in axle head is at the internal tooth (in-profile) that is engaged on the pre-feeding pump driver gear in shape fitly.By this way She Ji pre-feed pump be used for flight operating fuel diesel engine the time, has only very short operating life, this is because live axle and slave pump gear and pump case all can therefore have very serious wearing and tearing, even only moved the very short time, pre-feed pump also has to be replaced fully.
Document DE 10014548A1 has described the gear supply pump of a diesel fuel, and it sets up fit in shape connection by the geometry of the circle shape of a flattening or by a concavo-convex die mould between live axle and a pump gear.
Summary of the invention
The objective of the invention is, design is connected the pre-feed pump of high-pressure service pump upstream, even use the low fuel of lubricating ability, also can guarantee permanent working life.
Realize this goal and to adopt the pre-feed pump or the petrolift that are designed to gear pump according to the feature in the claim 1 of the present invention.Actual disposition of the present invention is then described by dependent claims.
In other words, essence of the present invention is that the live axle set up at the convex polygon profile on live axle and the pump gear by design and the shape of the zoarium between the slave pump gear connect.
In another embodiment of the present invention, live axle comprises the triangular polygon coupling disc, its side is outwardly-bent with specific radius, it is outside round that corner is, and in the slave pump gear, forming corresponding grooves with shape and size corresponding to coupling disc, coupling disc just is able to accurately mate with groove like this.
Beat allly be: it is found that, the live axle of setting up by two polygonals and the connection of the shape zoarium between the pump gear have guaranteed reliable power delivery, the wearing and tearing of the fit tie point of shape have consequently been reduced significantly, thereby reduced live axle, the wearing and tearing of pump gear and pump case, and then under the low situation of the lubricating ability of the fuel of being supplied with, the life-span of petrolift is improved, and has particularly improved the reliability that aircraft industry must be asked.In another configuration of the present invention, the shape zoarium of convex bending polygonal profile interconnects also and can for example realize with quadrilateral with polygonal.
Illustrate in greater detail the specific embodiment of the present invention with reference to the following drawings:
Description of drawings
What figure .1 showed is the perspective view of pre-feed pump under decomposing state that is designed to gear pump;
What figure .2 showed is the front view with live axle of polygonal coupling disc;
Figure .3 shows is the front view of actuation gear with pre-feed pump of polygonal in-profile.
Embodiment
The pre-feed pump of the decomposing state that shows in figure .1 is designed to gear pump, comprises pump case 1, wherein is fixed with the first driven pump gear 2 and second pump gear 3.In addition, driven live axle 4 is fixed in the pump case 1.The coupling disc 5 of mold on live axle 4 has the shape of convex, rule, here is protruding triangle, and for example, being one has the identical curved surface of three length and the triangle of identical number of degrees interior angle.Coupling disc 5 is engaged in the groove 6 that is formed in the slave pump gear 2, and its contour shape is the polygonal consistent with the profile of coupling disc 5.By means of connecting in the middle of the seal ring 8, pump case 1 cuts out by cap 9 by fixing cheese head screw.
The polygonal external frame of coupling disc 5 and the groove 6 that is assemblied in the slave pump gear 2 are shown in more detail in Fig. 2 and 3.It is d that the regular triangular polygon of coupling disc 5 and groove 6 has a diameter UCircumcircle and a diameter be d IIncircle., this triangular polygon does not have straight side (side), but is convex surface, for example, coupling disc 5 and groove 6 polygonal with radius R SBandy arch side and with radius R EBandy rounded corner zone.The polygonal Extreme breadth of groove 6 or coupling disc 5 is shown W in the drawings.
Connect because the convex polygon between live axle 6 and the slave pump gear is fit, make first and second pump gears, and the wearing and tearing of live axle and shell can be significantly reduced, even when using the low fuel of lubricating ability, can be increased to maximum three times working life that is designed to the pre-feed pump of gear pump.
The present invention is not limited to above-mentioned specific embodiment.For example, the fit connection of shape also is not limited only to the regular convex polygon at three angles, go back quadrilateral or pentagon, and it also is applicable to other petrolift that uses the rotation pump impeller.
Symbol description
1 pump case
2 first, slave pump gear
3 second pump gears
4 live axles
5 coupling discs, the triangle convex polygon
6 grooves, the triangle convex polygon
7 cheese head screws
8 seal rings
9 caps
D UPolygonal circumcircle
D IPolygonal incircle
The polygonal Extreme breadth of W
R SPolygonal side radius
R EPolygonal corner radius surface

Claims (4)

1. petrolift, the pre-feed pump of explosive motor particularly, comprise gear pump, this gear pump is equipped with the pump gear by drive shaft, be applicable to the diesel engine of using the flight fuel work, it is characterized in that: be presented as that the slave pump gear (2) of the regular convex polygon with bandy side and corner area and the shape of the zoarium between the live axle (4) connect.
2. according to claim item 1 described petrolift, it is characterized in that: the fit polygonal of this shape connects the coupling disc (5) on the live axle (4) that comprises the polygonal profile unanimity and is molded into the interior groove (6) of slave pump gear (2).
3. according to claim item 1 or 2 described petrolifts, it is characterized in that: this convex polygon profile is a triangle, and it comprises with radius R SBandy side and with radius R EBandy corner area.
4. according to claim item 1 or 2 described petrolifts, it is characterized in that: this regular convex polygon profile is designed to quadrilateral or pentagon.
CN2009801487002A 2008-11-21 2009-11-13 Fuel pump for internal combustion engines Pending CN102239333A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008043991A DE102008043991A1 (en) 2008-11-21 2008-11-21 Fuel pump for internal combustion engines
DE102008043991.6 2008-11-21
PCT/EP2009/065180 WO2010057838A2 (en) 2008-11-21 2009-11-13 Fuel pump for internal combustion engines

Publications (1)

Publication Number Publication Date
CN102239333A true CN102239333A (en) 2011-11-09

Family

ID=42114315

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009801487002A Pending CN102239333A (en) 2008-11-21 2009-11-13 Fuel pump for internal combustion engines

Country Status (6)

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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104074741B (en) * 2013-03-26 2017-09-29 德昌电机(深圳)有限公司 Fluid pump
FR3013406A1 (en) * 2013-11-15 2015-05-22 Peugeot Citroen Automobiles Sa MECHANICAL COUPLING ARRANGEMENT FOR A DRIVE PIECE WITH A DRIVE PIECE, A PETROL PUMP FOR A MOTOR VEHICLE AND A MOTOR VEHICLE, COMPRISING SUCH AN ARRANGEMENT
BE1030550B1 (en) * 2022-05-23 2023-12-18 Safran Aero Boosters COUPLING BY POLYGONAL PROFILES OF PUMPS IN A LUBRICATION GROUP

Citations (5)

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CN1839530A (en) * 2003-09-11 2006-09-27 西门子公司 Three-phase synchronous motor with a permanent magnet rotor and an induction cage

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3538950A1 (en) * 1984-11-23 1986-06-05 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Viscose pump, especially gear pump
CN87200648U (en) * 1987-01-14 1987-11-25 田澍藩 Internal mesh and outward rotary string rotor pump
US6004119A (en) * 1996-07-17 1999-12-21 Koyo Seiko Co., Ltd. Motor-driven hydraulic gear pump having a noise damper
US20030180160A1 (en) * 2000-03-23 2003-09-25 Stanislaw Bodzak Gear feed pump
CN1839530A (en) * 2003-09-11 2006-09-27 西门子公司 Three-phase synchronous motor with a permanent magnet rotor and an induction cage

Also Published As

Publication number Publication date
EP2359004A2 (en) 2011-08-24
DE102008043991A1 (en) 2010-05-27
WO2010057838A2 (en) 2010-05-27
US20110223049A1 (en) 2011-09-15
CA2747074A1 (en) 2010-05-27
WO2010057838A3 (en) 2010-09-10

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C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20111109