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EP1228313B1 - Pompe hydraulique a pistons - Google Patents

Pompe hydraulique a pistons Download PDF

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Publication number
EP1228313B1
EP1228313B1 EP00993113A EP00993113A EP1228313B1 EP 1228313 B1 EP1228313 B1 EP 1228313B1 EP 00993113 A EP00993113 A EP 00993113A EP 00993113 A EP00993113 A EP 00993113A EP 1228313 B1 EP1228313 B1 EP 1228313B1
Authority
EP
European Patent Office
Prior art keywords
pistons
piston pump
piston
hydraulic piston
pump according
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.)
Expired - Lifetime
Application number
EP00993113A
Other languages
German (de)
English (en)
Other versions
EP1228313A1 (fr
Inventor
Hermann Golle
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1228313A1 publication Critical patent/EP1228313A1/fr
Application granted granted Critical
Publication of EP1228313B1 publication Critical patent/EP1228313B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/26—Control
    • F04B1/30—Control of machines or pumps with rotary cylinder blocks
    • F04B1/303—Control of machines or pumps with rotary cylinder blocks by turning the valve plate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/06—Control
    • F04B1/07—Control by varying the relative eccentricity between two members, e.g. a cam and a drive shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
    • F04B49/123—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element
    • F04B49/125—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element by changing the eccentricity of the actuation means, e.g. cams or cranks, relative to the driving means, e.g. driving shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/04—Piston machines or pumps characterised by having positively-driven valving in which the valving is performed by pistons and cylinders coacting to open and close intake or outlet ports
    • F04B7/06—Piston machines or pumps characterised by having positively-driven valving in which the valving is performed by pistons and cylinders coacting to open and close intake or outlet ports the pistons and cylinders being relatively reciprocated and rotated

Definitions

  • the invention relates to a hydraulic piston pump with a Drive shaft and with this axially arranged or radial cylindrical pistons arranged in a star shape
  • Cylinder spring-loaded axially movable to its longitudinal axis are arranged and between their end face and the cylinder enclose a pump chamber, which with a filling channel, of a control edge of the piston is controlled, connectable, and which is connected to an exhaust valve, with one with the Drive shaft connected and the swash plate driving the piston with axially arranged pistons or eccentric shaft pistons arranged radially in a star shape and with a flow control.
  • a hydraulic piston pump with the features of the preamble of claim 1 e.g. known from US-A-2,775,210.
  • the hydraulic pump mentioned at the outset is for Common rail injection systems are provided.
  • Embodiments of the invention are in subclaims 2 to 9 specified.
  • the pistons 4 have on their, the outlet valve 8 facing Front an oblique control edge 9, which - in the known from in-line injection pumps - with the inlet bore 10 corresponds.
  • Piston 4 is the relevant inlet bore 10 through the oblique control edge 9 is not closed during the piston stroke (the fuel flows back - zero delivery) or it becomes when the control edge 9 of the inlet bore 10th is turned away, already closed from the end face of the piston 4 and all of the fuel through the exhaust valve 8 funded in the hunt group 11 (full funding).
  • Partial delivery rate adjustable The exhaust valves 8 are according to the invention arranged with the smallest distance to the piston 4.
  • To the piston 4 at the high hydraulic pressures from the side Keeping pressure forces free are two sloping control edges 9 arranged opposite to the piston 4.
  • each piston head 6 has external teeth 12, which in the corresponding internal teeth 13 a adjustable ring gear 14 engages.
  • the piston 4 also guide the external toothing 12 Stroke movement in the internal toothing 13. This is because the Adjustment forces are low, with appropriate material selection the gear partner possible.
  • prefabricated tooth segments 15 can be placed on the piston heads 6 .
  • the fuel enters the housing 1 at the inlet opening 16 and flows from here via the cylinder space 17 to the inlet bores 10. Furthermore, fuel flows through the housing channel 18 into the engine case, cools the engine and exits the pump at the outlet opening 19.
  • Fig. 2 shows the adjustment of the ring gear 14, which can be done in a conventional manner via a tangentially arranged adjusting piston 20. Adjustment or restoring forces can be applied by electromagnets or by springs or the fuel pressure in the pump interior.
  • FIG. 4 shows this in a supplementary representation Piston rotation system with the pistons 4, the piston heads 6 and the toothed segments 15, the external teeth 12 in the Engage the internal toothing 13 of the ring gear 14.
  • the twist the ring gear 14 is analogous to FIG. 2 by means of Adjusting piston 20 specified.
  • Fig. 5 shows the principle of a piston rotation system, at which does without a gear-like transmission.
  • collars 23 axially in the housing 1 slidable, but held rotatable.
  • These collars 23 have splines 24 in which the pistons 4 with their external gears 12 (now also splines) can slide.
  • the collars 23 have worked Bolt 25, which is drilled transversely with its outer end Engage pivot 26 in part 14. This now has the corresponding number of instead of an internal toothing Bores for receiving the pivot pins 26.
  • a housing 1 here star-shaped located engine of a radial piston pump, consisting of a drive shaft 3 (here eccentric shaft), intermediate elements like sliding shoes u. a., represented here in simplified form by the race 27 and five pistons 4.
  • a drive shaft 3 here eccentric shaft
  • intermediate elements like sliding shoes u. a., represented here in simplified form by the race 27 and five pistons 4.
  • the bevel edge control works in the manner already described. Is the slant Control edge 9 to the inlet bore 10 so that this up to If the stroke end is not covered, there is no fuel delivery instead of. Is the piston 4 set so that the piston end face closes the inlet bore 10, the full amount of fuel via the outlet valve 8 to the collective outlet 11 funded.
  • the individual exhaust valves 8 are over Intermediate channels not shown here with each other and with connected to the collecting outlet 11.
  • the fuel passes over the Inlet opening 16 into the pump flows on the one hand to the Inlet bores 10, on the other hand, via the housing channel 18 through the engine to the exhaust port 19.
  • the piston rotation system is designed in such a way that everyone Piston 4 two machined, opposite sliding surfaces 28 has, on which the toothed segments 15 engage fork-shaped. These are held axially in the housing slots are with their external teeth 12 with a counter toothing 29 of the ring gear 14 in engagement.
  • the gearing designed as bevel gear teeth. With twisting the In this way, ring gear 14 all pistons 4 in the desired Senses adjusted and the flow rate regulated.
  • the control unit e.g. B. also here as electromagnetic Interlocking 21, is fully integrated into the pump. she is directly connected on the one hand to the ring gear 14 and is based on the other hand in the housing 1.
  • Fig. 7 shows the piston rotation system in a supplementary representation with the radial pump.
  • the pistons 4 with their oblique Control edges 9 are supported on the race 27 on the Eccentric of the drive shaft 3.
  • the tooth segments 15 grip fork-shaped on the sliding surfaces 28 and are on the other hand with their oblique external teeth 12 with the counter teeth 29 of the ring gear 14 in engagement.
  • Adjustment systems for the flow rate are simply designed and suitable for mass production. With appropriate Material selection they will include the gears have it manufactured completely without cutting. According to the The object of the invention can thus be a hydraulic variable displacement pump without additional fine-tuned elements or stroke-adjusting Intermediate links manufactured in a simple manner become.
  • FIG. 1 which characterizes the invention is now another particularly advantageous embodiment described the invention.
  • Each piston 4 moves precisely in a separate cylinder liner.
  • These cylinder liners are used in the housing 1 and are by a closed pressure ring by means of screws the seal pressed and thus sealed on the high pressure side.
  • the housing 1 be kept closed at the end.
  • the big screw fittings, as shown in Fig. 1 on the front side are and each of which is sealed against high pressure can be omitted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Valve Device For Special Equipments (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Rotary Pumps (AREA)

Claims (9)

  1. Pompe à piston hydraulique comprenant un arbre de transmission (3) et de pistons (4) cylindriques disposés radialement en étoile ou axialement par rapport à cet arbre et qui, chargés par ressort, peuvent être déplacés dans un cylindre axialement par rapport à leur axe longitudinal et qui comprennent entre leur surface d'attaque et le cylindre une chambre active pouvant être reliée à un canal de remplissage (10) commandé par une rampe (9) du piston et à une soupape de décharge (8), avec un plateau oscillant (2) relié à l'arbre de transmission (3) et entraínant les pistons (4) en cas de pistons (4) disposés axialement, ou avec un arbre excentrique en cas de pistons (4) disposés radialement en étoile, et avec une régulation de débit d'alimentation,
    caractérisée en ce que
    chaque piston (4) présente un creux ou un aplatissement formant la rampe (9) conjointement avec la surface latérale du piston, de sorte que la rampe (9) de chaque piston (4) se trouve principalement en biais par rapport à la direction de l'axe longitudinal du piston (4), et tous les pistons (4) en même temps sont pourvus de la même manière de moyens tournants (12; 13; 14; 15 ; 20 ; 21 ; 22 ; 23 ; 24 ; 25 ; 26 ; 28 ; 29).
  2. Pompe à piston hydraulique selon la revendication 1,
    caractérisée en ce que
    les soupapes de décharge (8) sont montées directement face aux pistons (4) ou à la verticale par rapport à eux à une distance minimum.
  3. Pompe à piston hydraulique selon la revendication 1 ou 2,
    caractérisée en ce qu'
    en cas de pistons (4) disposés axialement les dentures extérieures (12) se trouvant sur les têtes de piston (6) sont en prise dans la denture intérieure (13) d'une couronne dentée (14) réglable.
  4. Pompe à piston hydraulique selon l'une des revendications 1 à 3,
    caractérisée en ce que
    des segments dentés (15) spéciaux portant les dentures extérieures (12) sont placés sur les têtes de piston (6).
  5. Pompe à piston hydraulique selon l'une des revendications 1 à 4,
    caractérisée en ce qu'
    une unité de commande rotative (21) en prise directe avec une denture partielle extérieure (22) de la couronne dentée (14) est prévue pour régler la couronne dentée (14).
  6. Pompe à piston hydraulique selon l'une des revendications 1 à 5,
    caractérisée en ce que
    les têtes de piston (6) sont reliées à des bagues de butée (23) via des dentures coniques (12 ; 13) sans rotation possible, mais avec un déplacement axial possible et les boulons (25) se trouvant sur les bagues de butée (23) pénètrent dans les pivots (26), lesquels (26) sont logés dans des alésages de la couronne dentée (14).
  7. Pompe à piston hydraulique selon la revendication 1 ou 2,
    caractérisée en ce qu'
    en cas de pistons (4) disposés radialement en étoile, des segments dentés (15) en forme de fourchette sont d'une part en prise sur des surfaces de glissement (28) des pistons (4), et d'autre part reliés à une contre-denture (29) de la couronne dentée (14) via des dentures extérieures (12).
  8. Pompe à piston hydraulique selon la revendication 1 ou 2 et 7,
    caractérisée en ce que
    l'unité de commande rotative (21) est placée à l'intérieur du carter (1) et reliée d'une part directement à la roue dentée (14) et d'autre part au carter (1).
  9. Pompe à piston hydraulique selon l'une des revendications 1 à 8,
    caractérisée en ce que
    des chemises de cylindre sont étanchées côté haute pression et serrées contre des joints placés dans le carter (1) à l'aide d'une bague de serrage et de vis.
EP00993113A 1999-11-13 2000-11-13 Pompe hydraulique a pistons Expired - Lifetime EP1228313B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19954639A DE19954639C2 (de) 1999-11-13 1999-11-13 Hydraulische Kolbenpumpe, insb. für Common Rail-Einspritzsysteme
DE19954639 1999-11-13
PCT/DE2000/003952 WO2001036820A1 (fr) 1999-11-13 2000-11-13 Pompe hydraulique a pistons

Publications (2)

Publication Number Publication Date
EP1228313A1 EP1228313A1 (fr) 2002-08-07
EP1228313B1 true EP1228313B1 (fr) 2003-09-03

Family

ID=7928918

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00993113A Expired - Lifetime EP1228313B1 (fr) 1999-11-13 2000-11-13 Pompe hydraulique a pistons

Country Status (7)

Country Link
EP (1) EP1228313B1 (fr)
CN (1) CN1390281A (fr)
AT (1) ATE248991T1 (fr)
AU (1) AU2826001A (fr)
CZ (1) CZ20022062A3 (fr)
DE (2) DE19954639C2 (fr)
WO (1) WO2001036820A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10247982A1 (de) * 2002-10-15 2004-04-29 Robert Bosch Gmbh Hydraulische Kolbenmaschine
DE102008028547B4 (de) * 2008-06-16 2022-07-07 Danfoss Power Solutions Gmbh & Co. Ohg Mobile Arbeitsmaschine
DE102009038462A1 (de) * 2009-08-21 2011-03-03 Dürr Systems GmbH Taumelkolbenpumpe zur Dosierung eines Beschichtungsmittels
JP6905442B2 (ja) * 2017-09-29 2021-07-21 株式会社イワキ プランジャポンプ
CN110206702B (zh) * 2019-06-18 2021-03-30 杭州绿聚科技有限公司 一种轴向柱塞组件泵

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR54949E (fr) * 1946-10-05 1951-04-30 Nathan Mfg Co Pompe
US2775210A (en) * 1951-04-10 1956-12-25 Scintilla Ltd Piston pump
DE1222373B (de) * 1963-11-14 1966-08-04 Boelkow Ludwig Kolbenpumpe mit kleinem Hub des Arbeitskolbens
US3492948A (en) * 1968-04-08 1970-02-03 Haviland H Platt Hydraulic pump/motor
DE3601462A1 (de) * 1986-01-20 1987-07-23 Mak Maschinenbau Krupp Brennstoffeinspritzvorrichtung
DE3803735A1 (de) * 1988-02-08 1989-08-17 Rexroth Mannesmann Gmbh Exzenterpumpe, insbesondere kraftstoffeinspritzpumpe
IT1244233B (it) * 1990-05-16 1994-07-08 O M A P Officine Meccaniche Al Pompa ad alta pressione ad anticipo variabile particolarmente per iniettori di motori endotermici
DE4140801A1 (de) * 1991-12-11 1993-06-17 Bosch Gmbh Robert Aussenbeaufschlagte radialkolbenpumpe

Also Published As

Publication number Publication date
CZ20022062A3 (cs) 2002-10-16
DE19954639C2 (de) 2002-05-29
WO2001036820A1 (fr) 2001-05-25
WO2001036820A9 (fr) 2001-06-21
AU2826001A (en) 2001-05-30
DE50003582D1 (de) 2003-10-09
ATE248991T1 (de) 2003-09-15
DE19954639A1 (de) 2001-06-07
EP1228313A1 (fr) 2002-08-07
CN1390281A (zh) 2003-01-08

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