EP1228313B1 - Hydraulische kolbenpumpe - Google Patents
Hydraulische kolbenpumpe Download PDFInfo
- 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
Links
- 238000005086 pumping Methods 0.000 claims 1
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract 1
- 239000000446 fuel Substances 0.000 description 13
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
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)
- Details Of Reciprocating Pumps (AREA)
- Valve Device For Special Equipments (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Rotary Pumps (AREA)
- Fuel-Injection Apparatus (AREA)
Description
- Fig. 1
- einen Längsschnitt durch eine 5-zylindrige Pumpe mit axialer Kolbenanordnung (Axialpumpe),
- Fig. 2
- einen Schnitt nach der Linie A-A in Fig. 1,
- Fig. 3
- den gleichen Schnitt wie Fig. 2 mit einem elektromagnetischen Drehstellwerk als Steuereinheit,
- Fig. 4
- eine ergänzende Darstellung des Kolben-Verdrehsystems mit Verzahnungselementen (Axialpumpe),
- Fig. 5
- ein anderes Kolben-Verdrehsystems (Axialpumpe),
- Fig. 6
- einen Längsschnitt durch eine 5-zylindrige Pumpe mit radialer Kolbenanordnung (Radialpumpe),
- Fig. 7
- eine ergänzende Darstellung des Kolben-Verdrehsystems (Radialpumpe) und
Verstell- bzw. Rückstellkräfte können durch Elektromagnete bzw. durch Federn oder den Kraftstoffdruck im Pumpeninnenraum aufgebracht werden.
- 1
- Gehäuse
- 2
- Taumelscheibentriebwerk
- 3
- Antriebswelle
- 4
- Kolben
- 5
- Druckfeder
- 6
- Kolbenkopf
- 7
- Druckscheibe
- 8
- Auslassventil
- 9
- Steuerkante
- 10
- Einlassbohrung
- 11
- Sammelauslass
- 12
- Aussenverzahnung
- 13
- Innenverzahnung
- 14
- Zahnkranz
- 15
- Zahnsegment
- 16
- Einlassöffnung
- 17
- Zylinderraum
- 18
- Gehäusekanal
- 19
- Auslassöffnung
- 20
- Verstellkolben
- 21
- Drehstellwerk
- 22
- Teilverzahnung
- 23
- Stellring
- 24
- Keilverzahnung
- 25
- Bolzen
- 26
- Drehzapfen
- 27
- Laufring
- 28
- Gleitflächen
- 29
- Gegenverzahnung
Claims (9)
- Hydraulische Kolbenpumpe mit einer Antriebswelle (3) und mit zu dieser axial angeordneten oder radial sternförmig angeordneten zylindrischen Kolben(4), die in einem Zylinder zu ihrer Längsachse federbelastet axial beweglich angeordnet sind und zwischen ihrer Stirnseite und dem Zylinder einen Pumpraum einschließen, der mit einem Füll-kanal (10), von einer Steuerkante (9) des Kolbens gesteuert, verbindbar ist, und der mit einem Auslassventil (8) verbunden ist, mit einer mit der Antriebswelle (3) verbundenen und die Kolben (4) antreibenden Taumelscheibe (2) bei axial angeordneten Kolben (4) oder Exzenterwelle bei radial sternförmig angeordneten Kolben (4) und mit einer Fördermengenregelung, dadurch gekennzeichnet, daß jeder Kolben (4) an seiner Stirnseite eine zusammen mit der Mantelfläche des Kolbens die Steuerkante (9) bildende Abflachung oder Vertiefung aufweist, derart, dass die Steuerkante (9) eines jeden Kolbens (4) im wesentlichen schräg zur Richtung der Längsachse des Kolbens (4) liegt, und dass alle Kolben (4) zugleich und in gleicher Weise verdrehende Mittel (12; 13; 14, 15; 20; 21; 22; 23; 24; 25; 26; 28; 29) vorgesehen sind.
- Hydraulische Kolbenpumpe nach Anspruch 1, dadurch gekennzeichnet, daß die Auslassventile (8) mit geringstmöglichen Abstand unmittelbar den Kolben (4) gegenüber oder dazu senkrecht liegend eingebaut sind.
- Hydraulische Kolbenpumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß bei axial angeordneten Kolben (4) auf den Kolbenköpfen (6) befindliche Aussenverzahnungen (12) in die Innenverzahnung (13) eines verstellbaren Zahnkranzes (14) eingreifen.
- Hydraulische Kolbenpumpe nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß auf den Kolbenköpfen (6) gesonderte Zahnsegmente (15), welche die Aussenverzahnungen (12) tragen, aufgesetzt sind.
- Hydraulische Kolbenpumpe nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß zur Verstellung des Zahnkranzes (14) ein elektro-magnetisches Drehstellwerk (21) mit direktem Eingriff in eine äußere Teilverzahnung (22) des Zahnkranzes (14) angeordnet ist.
- Hydraulische Kolbenpumpe nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Kolbenköpfe (6) mit Stellringen (23) über Keilverzahnungen (12; 13) drehfest, aber axial verschiebbar verbunden sind und an den Stellringen (23) befindliche Bolzen (25) in Drehzapfen (26) eingreifen, wobei die Drehzapfen (26) in Bohrungen des Zahnkranzes (14) gelagert sind.
- Hydraulische Kolbenpumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß bei radial sternförmig angeordneten Kolben (4) gabelförmig gestaltete Zahnsegmente (15) einerseits an Gleitflächen (28) der Kolben (4) angreifen und andererseits über Aussenverzahnungen (12) mit einer Gegenverzahnung (29) des Zahnkranzes (14) in Verbindung stehen.
- Hydraulische Kolbenpumpe nach Anspruch 1 oder 2 und 7, dadurch gekennzeichnet, daß dass das elektromagnetische Drehstellwerk (21) im Inneren des Gehäuses (1) angeordnet und einerseits direkt mit dem Zahnkranz (14), andererseits mit dem Gehäuse (1) verbunden ist.
- Hydraulische Kolbenpumpe nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß Zylinderbüchsen mittels eines Druckringes und Schrauben gegen im Gehäuse (1) eingesetzte Dichtungen gepresst und hochdruckseitig abgedichtet sind.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19954639 | 1999-11-13 | ||
| DE19954639A DE19954639C2 (de) | 1999-11-13 | 1999-11-13 | Hydraulische Kolbenpumpe, insb. für Common Rail-Einspritzsysteme |
| PCT/DE2000/003952 WO2001036820A1 (de) | 1999-11-13 | 2000-11-13 | Hydraulische kolbenpumpe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1228313A1 EP1228313A1 (de) | 2002-08-07 |
| EP1228313B1 true EP1228313B1 (de) | 2003-09-03 |
Family
ID=7928918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00993113A Expired - Lifetime EP1228313B1 (de) | 1999-11-13 | 2000-11-13 | Hydraulische kolbenpumpe |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1228313B1 (de) |
| CN (1) | CN1390281A (de) |
| AT (1) | ATE248991T1 (de) |
| AU (1) | AU2826001A (de) |
| CZ (1) | CZ20022062A3 (de) |
| DE (2) | DE19954639C2 (de) |
| WO (1) | WO2001036820A1 (de) |
Families Citing this family (5)
| 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)
| 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 |
-
1999
- 1999-11-13 DE DE19954639A patent/DE19954639C2/de not_active Expired - Fee Related
-
2000
- 2000-11-13 AT AT00993113T patent/ATE248991T1/de not_active IP Right Cessation
- 2000-11-13 EP EP00993113A patent/EP1228313B1/de not_active Expired - Lifetime
- 2000-11-13 DE DE50003582T patent/DE50003582D1/de not_active Expired - Fee Related
- 2000-11-13 WO PCT/DE2000/003952 patent/WO2001036820A1/de not_active Ceased
- 2000-11-13 CZ CZ20022062A patent/CZ20022062A3/cs unknown
- 2000-11-13 AU AU28260/01A patent/AU2826001A/en not_active Abandoned
- 2000-11-13 CN CN00815556A patent/CN1390281A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN1390281A (zh) | 2003-01-08 |
| WO2001036820A9 (de) | 2001-06-21 |
| WO2001036820A1 (de) | 2001-05-25 |
| ATE248991T1 (de) | 2003-09-15 |
| DE19954639C2 (de) | 2002-05-29 |
| EP1228313A1 (de) | 2002-08-07 |
| DE50003582D1 (de) | 2003-10-09 |
| AU2826001A (en) | 2001-05-30 |
| CZ20022062A3 (cs) | 2002-10-16 |
| DE19954639A1 (de) | 2001-06-07 |
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