EP3173625A1 - Displacement pump with a displacement ring comprising a displacement arm for adjusting the volume displaced by the displacement pump - Google Patents
Displacement pump with a displacement ring comprising a displacement arm for adjusting the volume displaced by the displacement pump Download PDFInfo
- Publication number
- EP3173625A1 EP3173625A1 EP16194742.9A EP16194742A EP3173625A1 EP 3173625 A1 EP3173625 A1 EP 3173625A1 EP 16194742 A EP16194742 A EP 16194742A EP 3173625 A1 EP3173625 A1 EP 3173625A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- adjusting
- hydraulic fluid
- displacement pump
- variable displacement
- chamber
- 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.)
- Withdrawn
Links
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 54
- 239000012530 fluid Substances 0.000 claims abstract description 53
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Classifications
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- 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
- F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
- F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
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- 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
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
- F04C14/22—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members
- F04C14/223—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members using a movable cam
- F04C14/226—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members using a movable cam by pivoting the cam around an eccentric axis
Definitions
- the invention relates to a variable displacement pump with an adjusting arm having an adjusting ring for adjusting the displacement of the variable, wherein the adjusting cooperates with a Verstellzylinder having adjusting and the adjustment is adjustable in response to a pressure of a hydraulic fluid in a first adjustment chamber and a second adjustment, with a hydraulic fluid supply and a hydraulic fluid discharge to a control valve device, and wherein the control valve device is connected at least with a displacement.
- variable displacement pump has an adjusting ring for adjusting the displacement of the variable displacement pump, wherein the adjusting ring interacts with an adjusting arm, which projects into a adjusting cylinder arranged on both sides of the adjusting arm with two adjusting chambers.
- a pressure regulator which is designed as an electrically operated slide valve.
- the invention has for its object to provide a variable displacement pump with a control valve device, wherein the control valve device consists of simple inexpensive components.
- control valve device has at least two 2/2-way valves.
- Such 2/2 switching valves are simpler in construction than, for example, a previously used 3/2 valve or an electrically operated slide valve and are used in a variety of ways. Therefore, 2/2-way valves are available in many designs and are very cost-effective due to a high production rate. With at least two such 2/2-way valves, the desired flow rate adjustment of the variable displacement pump can be implemented cost-effective and reliable in various versions.
- the control valve device has two times two 2/2-way valves.
- the at least two 2/2-switching valves can be combined in a valve block to form a structural unit, wherein the valve block has the inner interconnection of the at least two times two 2/2-switching valves and to the valve block the corresponding connections, in particular the hydraulic fluid supply, the hydraulic fluid discharge and the connection to be connected to at least one adjustment.
- the summary of at least two times two 2/2-way valves in the valve block is inexpensive to implement.
- At least one switching valve is a proportional switching valve.
- a proportional switching valve has the advantage that a fully flexible adjustment of the hydraulic flow controlled by the proportional switching valve is possible. As a result, a control of two characteristics can be made possible.
- the adjusting ring cooperates with a Verstellringfeder, wherein the adjustment of the adjusting ring of the adjusting ring spring in a Verstellendlage is adjustable in a adjustment.
- This embodiment allows further possibilities of flow adjustment of the variable.
- a slide valve is provided, which is arranged between the at least two 2/2-switching valves and at least one adjustment chamber, preferably the first adjustment chamber and the second adjustment chamber.
- Such a slide valve which is designed in the inserted form without an electrical control, is also very inexpensive to provide in this form and allows further possibilities of flow adjustment. In particular, this allows regulation to be carried out on two characteristic curves.
- a switching space of the slide valve is connected to the hydraulic fluid supply. This connection of the switch room with the hydraulic fluid supply replaces an example of electrical control of the slide valve.
- variable displacement pump is a vane cell pump. This is preferred embodiment, but here also other forms of a variable displacement pump are provided in the context of the invention.
- variable displacement pump is an oil pump of an internal combustion engine.
- the subject of the invention is particularly advantageous feasible.
- FIG. 1 shows a designed as a vane pump variable displacement pump 1, which is preferably an oil pump of an internal combustion engine.
- the variable displacement pump 1 has a rotatable in a stator 2 rotor 3, wherein the rotor 3 is provided with slots 4, in which wings 5 are arranged displaceably.
- a rotor 3 receiving pump chamber 6 is formed in the stator 2.
- the stator 2 is arranged eccentrically to the rotor 3 and the eccentricity is - as will be explained below - adjustable.
- the lubricating oil is introduced via an inlet 7 into the inlet space of the pump chamber 6 and conveyed via an outlet 8 into a filter 9 into further components of the internal combustion engine to be lubricated.
- the stator 2 has an adjusting ring 10, which is arranged together with the optionally integral therewith stator 2 in a pump housing, not shown, of the variable displacement pump 1.
- the adjusting ring 10 and thus the stator 2 is eccentrically rotatable to the rotor 3, whereby the flow adjustment of the variable displacement pump 1 is realized.
- the adjusting ring 10 has an adjusting arm 11, which projects into an adjusting cylinder with a first adjusting chamber 12a and a second adjusting chamber 12b and subdivides this into the first adjusting chamber 12a and the second adjusting chamber 12b. Furthermore, the adjusting ring 10 cooperates with a Verstellringfeder 13, which is supported for example on the pump housing and adjusts the adjusting ring 10 without any other acting forces in a Verstellendlage in the first adjustment chamber 12a.
- a control valve device which has two 2/2-way valves 14.
- the 2/2-way valves 14 are combined in a valve block 15.
- a first 2/2-way switching valve 14 acts with a hydraulic fluid supply 16 and the second 2/2-way switching valve 14 cooperates with a hydraulic fluid discharge 17.
- the hydraulic fluid supply 16 is connected, for example, to a hydraulic fluid reservoir or a hydraulic fluid pump, while the hydraulic fluid discharge 17 is connected in particular to a tank.
- the 2/2-switching valve 14 connected to the hydraulic fluid supply 16 is in the blocking position, while the 2/2-switching valve 14 connected to the hydraulic discharge 17 is in the passage position.
- Both 2/2 switching valves are connected to each other via arranged in the valve block 15 lines 24 and further to the first adjustment chamber 12a of the variable displacement pump 1, while the second adjustment chamber 12b is connected in this embodiment, in particular with the tank.
- the inflow of hydraulic fluid from the hydraulic fluid supply 16 is shut off in the first adjustment chamber 12 a, while at the same time the first adjustment chamber 12 a with the Hydraulic fluid discharge 17 is connected.
- the illustrated adjustment of the adjusting ring 10 is adjusted by the Verstellringfeder 13 in the Verstellendlage shown.
- each two 2/2-switching valves 14 are connected to the hydraulic fluid supply 16 and two 2/2-switching valves 14 to the hydraulic fluid discharge 17.
- the two 2/2-shift valves 14 cooperating with the hydraulic fluid supply 16 are also actuated and switched together, as the two 2/2-shift valves 14 interconnected with the hydraulic fluid discharge 17.
- the first adjustment chamber 12a with the illustrated lower line 24a connected during the second adjustment chamber 12 b in contrast to the embodiment according to FIG. 1 is connected to an upper line 24b in the adjustment block 15, which is connected in the illustrated form with the two 2/2-switching valves 14 cooperating with the hydraulic supply 16.
- hydraulic fluid is introduced into the second adjustment chamber 12b and discharged from the second adjustment chamber 12b in the hydraulic fluid discharge 17. If the two 2/2-shift valves 14 connected to the hydraulic fluid supply 16 and the two 2/2-shift valves 14 connected to the hydraulic fluid discharge 17 are moved into the respective second shift position, hydraulic fluid introduced into the first shift chamber 12a is discharged from the second shift chamber 12b. If then the two 2/2-shift valves 14 cooperating with the hydraulic fluid supply 16 or hydraulic fluid discharge 17 are adjusted, the adjustment arm 11 is blocked in the reached position. In this embodiment, the adjusting arm 11 and thus the adjusting ring 10 is actively adjusted in both adjustment directions of hydraulic fluid and therefore no Verstellringfeder 13 is necessary.
- FIG. 3 is largely consistent with the embodiment according to FIG. 1 , wherein here 2/2-switching valve 14 is replaced by a 2/2-proportional switching valve 14a.
- the 2/2-way switching valve 14 with the hydraulic fluid supply 16 and the 2/2-proportional switching valve 14 a with the hydraulic fluid discharge 17 is connected. Due to the proportional adjustability of the 2/2-proportional switching valve 14a, the flexible adjustment of the flow rate adjustment is further improved.
- FIG. 4 embodiment shown again largely corresponds to in FIG. 2 illustrated embodiment, in which case two 2/2-switching valves 14 are replaced by two 2/2-proportional switching valve 14a.
- the two 2/2-way valves 14 are connected to the hydraulic fluid supply 16 and the two 2/2-proportional switching valves 14 a to the hydraulic fluid discharge 17.
- the flexible adjustment of the flow rate adjustment is also further improved by the proportional adjustability of the two 2/2 proportional switching valves 14a that can be represented herewith.
- FIG. 5 illustrated embodiment basically corresponds to the FIG. 1 , wherein here also a slide valve 18 between the valve block 15 with the two 2/2-switching valves 14 and the variable displacement pump 1 is arranged.
- a switching space 19 of the slide valve 18 is connected to the hydraulic fluid supply 16.
- the first adjustment chamber 12a and the second adjustment chamber 12b are connected to switching chambers 20a, 20b of the slide valve 21 having a slide valve 18.
- FIG. 6 A similar embodiment is in FIG. 6 represented here, analogous to FIG. 3 in the valve block 15, a 2/2-way switching valve 14 is replaced by a 2/2-proportional switching valve 14a.
- the 2/2-way switching valve 14 with the hydraulic fluid supply 16 and the 2/2-proportional switching valve 14 a with the hydraulic fluid discharge 17 is connected.
- a first 2/2-Proportinalschaltventil 14 a is provided and the second 2/2-proportional switching valve 14 a or 2/2-switching valve 14 is replaced by a slide valve 18 in the illustrated circuit.
- the 2/2-Proportinalschaltventil 14a controls the pressure in the spool spring chamber 23 in this embodiment, so that even with this embodiment, the desired displacement adjustment is displayed.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
Verstellpumpe (1) mit einem einen Verstellarm (11) aufweisenden Verstellring (10) zur Fördermengenverstellung der Verstellpumpe, wobei der Verstellarm (11) mit einem Verstellräume (12a, 12b) aufweisenden Verstellzylinder zusammenwirkt und der Verstellarm (11) in Abhängigkeit von einem Druck eines Hydraulikfluids in einem ersten Verstellraum (12a) und in einem zweiten Verstellraum (12b) verstellbar ist, mit einer Hydraulikfluidzuführung (16) und einer Hydraulikfluidabführung (17) zu einer Regelventileinrichtung, und wobei die Regelventileinrichtung zumindest mit einem Verstellraum (12a, 12b) verbunden ist. Erfindungsgemäß wird die Verstellpumpe (1) mit einer Regelventileinrichtung bereitgestellt, die zwei 2/2-Schaltventile (14) aufweist.Variable displacement pump (1) having an adjusting arm (11) having an adjusting ring (10) for adjusting the displacement of the variable, wherein the adjusting (11) with an adjusting (12a, 12b) having adjusting and the adjusting (11) in response to a pressure of a Hydraulic fluid in a first adjustment chamber (12a) and in a second adjustment chamber (12b) is adjustable, with a hydraulic fluid supply (16) and a hydraulic fluid discharge (17) to a control valve device, and wherein the control valve device is at least connected to a displacement chamber (12a, 12b) , According to the invention, the variable displacement pump (1) is provided with a control valve device which has two 2/2-way valves (14).
Description
Die Erfindung betrifft eine Verstellpumpe mit einem einen Verstellarm aufweisenden Verstellring zur Fördermengenverstellung der Verstellpumpe, wobei der Verstellarm mit einem Verstellräume aufweisenden Verstellzylinder zusammenwirkt und der Verstellarm in Abhängigkeit von einem Druck eines Hydraulikfluids in einem ersten Verstellraum und einem zweiten Verstellraum verstellbar ist, mit einer Hydraulikfluidzuführung und einer Hydraulikfluidabführung zu einer Regelventileinrichtung, und wobei die Regelventileinrichtung zumindest mit einem Verstellraum verbunden ist.The invention relates to a variable displacement pump with an adjusting arm having an adjusting ring for adjusting the displacement of the variable, wherein the adjusting cooperates with a Verstellzylinder having adjusting and the adjustment is adjustable in response to a pressure of a hydraulic fluid in a first adjustment chamber and a second adjustment, with a hydraulic fluid supply and a hydraulic fluid discharge to a control valve device, and wherein the control valve device is connected at least with a displacement.
Eine derartige Verstellpumpe ist aus der
Ähnliche Verstellpumpen sind aus der
Der Erfindung liegt die Aufgabe zugrunde, eine Verstellpumpe mit einer Regelventileinrichtung bereitzustellen, bei der die Regelventileinrichtung aus einfachen kostengünstigen Komponenten besteht.The invention has for its object to provide a variable displacement pump with a control valve device, wherein the control valve device consists of simple inexpensive components.
Diese Aufgabe wird dadurch gelöst, dass die Regelventileinrichtung zumindest zwei 2/2-Schaltventile aufweist. Solche 2/2-Schaltventile sind einfacher aufgebaut als beispielsweise ein bisher verwendetes 3/2-Ventil oder ein elektrisch betätigtes Schieberventil und kommen in vielfältiger Weise zur Anwendung. Daher stehen 2/2-Schaltventile in vielen Ausgestaltungen zur Verfügung und sind durch eine hohe Produktionszahl sehr kostengünstig. Mit zumindest zwei solchen 2/2-Schaltventilen kann die gewünschte Fördermengenverstellung der Verstellpumpe in verschiedenen Ausführungen kostengünstig und betriebssicher umgesetzt werden.This object is achieved in that the control valve device has at least two 2/2-way valves. Such 2/2 switching valves are simpler in construction than, for example, a previously used 3/2 valve or an electrically operated slide valve and are used in a variety of ways. Therefore, 2/2-way valves are available in many designs and are very cost-effective due to a high production rate. With at least two such 2/2-way valves, the desired flow rate adjustment of the variable displacement pump can be implemented cost-effective and reliable in various versions.
In Weiterbildung der Erfindung weist die Regelventileinrichtung zwei mal zwei 2/2-Schaltventile auf. Dabei können die zumindest zwei 2/2-Schaltventile in einem Ventilblock zu einer Baueinheit zusammengefasst sein, wobei der Ventilblock die innere Verschaltung der zumindest zwei mal zwei 2/2-Schaltventile aufweist und an den Ventilblock die entsprechenden Anschlüsse, insbesondere die Hydraulikfluidzuführung, die Hydraulikfluidabführung und die Verbindung mit zumindest einem Verstellraum angeschlossen werden. Die Zusammenfassung der zumindest zwei mal zwei 2/2-Schaltventile in dem Ventilblock ist kostengünstig umsetzbar.In a further development of the invention, the control valve device has two times two 2/2-way valves. In this case, the at least two 2/2-switching valves can be combined in a valve block to form a structural unit, wherein the valve block has the inner interconnection of the at least two times two 2/2-switching valves and to the valve block the corresponding connections, in particular the hydraulic fluid supply, the hydraulic fluid discharge and the connection to be connected to at least one adjustment. The summary of at least two times two 2/2-way valves in the valve block is inexpensive to implement.
In Weiterbildung der Erfindung ist zumindest ein Schaltventil ein Proportionalschaltventil. Ein Proportionalschaltventil bildet den Vorteil, dass damit eine voll flexible Einstellung des von dem Proportionalschaltventil gesteuerten Hydraulikflusses möglich ist. Dadurch kann eine Regelung auf zwei Kennlinien ermöglicht werden.In a further development of the invention, at least one switching valve is a proportional switching valve. A proportional switching valve has the advantage that a fully flexible adjustment of the hydraulic flow controlled by the proportional switching valve is possible. As a result, a control of two characteristics can be made possible.
In weiterer Ausgestaltung der Erfindung wirkt der Verstellring mit einer Verstellringfeder zusammen, wobei der Verstellarm des Verstellrings von der Verstellringfeder in eine Verstellendlage in einem Verstellraum verstellbar ist. Diese Ausgestaltung ermöglicht weitere Möglichkeiten einer Fördermengenverstellung der Verstellpumpe.In a further embodiment of the invention, the adjusting ring cooperates with a Verstellringfeder, wherein the adjustment of the adjusting ring of the adjusting ring spring in a Verstellendlage is adjustable in a adjustment. This embodiment allows further possibilities of flow adjustment of the variable.
In Weiterbildung der Erfindung ist ein Schieberventil vorgesehen, das zwischen den zumindest zwei 2/2-Schaltventilen und zumindest einem Verstellraum, vorzugsweise dem ersten Verstellraum und dem zweiten Verstellraum, angeordnet ist. Ein solches Schieberventil, das in der eingesetzten Form ohne eine elektrische Ansteuerung ausgestaltet ist, ist in dieser Form ebenfalls sehr kostengünstig bereitstellbar und ermöglicht weitere Möglichkeiten der Fördermengenverstellung. Insbesondere kann dadurch eine Regelung auf zwei Kennlinien ermöglicht werden.In a further development of the invention, a slide valve is provided, which is arranged between the at least two 2/2-switching valves and at least one adjustment chamber, preferably the first adjustment chamber and the second adjustment chamber. Such a slide valve, which is designed in the inserted form without an electrical control, is also very inexpensive to provide in this form and allows further possibilities of flow adjustment. In particular, this allows regulation to be carried out on two characteristic curves.
In Weiterbildung der Erfindung ist ein Schaltraum des Schieberventils mit der Hydraulikfluidzuführung verbunden. Diese Verbindung des Schaltraums mit der Hydraulikfluidzuführung ersetzt eine beispielsweise elektrische Ansteuerung des Schieberventils.In a further development of the invention, a switching space of the slide valve is connected to the hydraulic fluid supply. This connection of the switch room with the hydraulic fluid supply replaces an example of electrical control of the slide valve.
In weiterer Ausgestaltung der Erfindung ist die Verstellpumpe eine Flügelzellenpumpe. Dies ist bevorzugte Ausgestaltungsform, wobei hier aber auch andere Formen einer Verstellpumpe im Rahmen der Erfindung vorgesehen sind.In a further embodiment of the invention, the variable displacement pump is a vane cell pump. This is preferred embodiment, but here also other forms of a variable displacement pump are provided in the context of the invention.
In Weiterbildung der Erfindung ist die Verstellpumpe eine Ölpumpe einer Brennkraftmaschine. Bei einer solchen Anwendung ist der Gegenstand der Erfindung besonders vorteilhaft umsetzbar.In a further development of the invention, the variable displacement pump is an oil pump of an internal combustion engine. In such an application, the subject of the invention is particularly advantageous feasible.
Weitere vorteilhafte Ausgestaltungen der Erfindung sind der Zeichnungsbeschreibung zu entnehmen, in der in den Zeichnungen dargestellte Ausführungsbeispiele der Erfindung näher beschrieben sind.Further advantageous embodiments of the invention are described in the drawings, are described in more detail in the illustrated in the drawings embodiments of the invention.
Es zeigen:
Figur 1- ein erstes Ausführungsbeispiel mit einer Verstellpumpe, die mit einer Regelventileinrichtung zusammenwirkt, die zwei 2/2-Schaltventile aufweist,
- Figur 2
- ein zweites Ausführungsbeispiel mit einer Verstellpumpe, die mit einer Regelventileinrichtung zusammenwirkt, die zwei mal zwei 2/2-Schaltventile aufweist,
Figur 3- ein drittes Ausführungsbeispiel mit einer Verstellpumpe, die mit einer Regelventileinrichtung zusammenwirkt, die ein 2/2 Schaltventil und ein 2/2-Proportionalschaltventil aufweist,
Figur 4- ein viertes Ausführungsbeispiel mit einer Verstellpumpe, die mit einer Regelventileinrichtung zusammenwirkt, die zwei 2/2 Schaltventile und zwei 2/2-Proportionalschaltventile aufweist,
Figur 5- ein fünftes Ausführungsbeispiel mit einer Verstellpumpe, die mit einer Regelventileinrichtung zusammenwirkt, die zwei 2/2-Schaltventile und ein Schieberventil aufweist,
Figur 6- ein sechstes Ausführungsbeispiel mit einer Verstellpumpe, die mit einer Regelventileinrichtung zusammenwirkt, die ein 2/2 Schaltventil sowie ein 2/2-Proportionalschaltventil und ein Schieberventil aufweist und
Figur 7- ein siebtes Ausführungsbeispiel mit einer Verstellpumpe, die mit einer Regelventileinrichtung zusammenwirkt, bei der ein 2/2-Schaltventil durch ein Schieberventil ersetzt ist.
- FIG. 1
- a first embodiment with a variable displacement pump, which cooperates with a control valve device having two 2/2-way valves,
- FIG. 2
- a second embodiment with a variable displacement pump, which cooperates with a control valve device which has two times two 2/2-way valves,
- FIG. 3
- A third embodiment with a variable displacement pump, which cooperates with a control valve device having a 2/2 switching valve and a 2/2-proportional switching valve,
- FIG. 4
- A fourth embodiment with a variable displacement pump, which cooperates with a control valve device having two 2/2 switching valves and two 2/2-proportional switching valves,
- FIG. 5
- A fifth embodiment with a variable displacement pump, which cooperates with a control valve device having two 2/2-way valves and a slide valve,
- FIG. 6
- a sixth embodiment with a variable displacement pump, which cooperates with a control valve device having a 2/2 switching valve and a 2/2-proportional switching valve and a slide valve and
- FIG. 7
- a seventh embodiment with a variable displacement pump, which cooperates with a control valve device in which a 2/2-way switching valve is replaced by a slide valve.
Der Verstellring 10 weist einen Verstellarm 11 auf, der in einen Verstellzylinder mit einem ersten Verstellraum 12a und einem zweiten Verstellraum 12b hineinragt und diesen in den ersten Verstellraum 12a und den zweiten Verstellraum 12b unterteilt. Weiterhin wirkt der Verstellring 10 mit einer Verstellringfeder 13 zusammen, die sich beispielsweise an dem Pumpengehäuse abstützt und ohne sonstige einwirkende Kräfte den Verstellring 10 in eine Verstellendlage in dem ersten Verstellraum 12a verstellt.The adjusting ring 10 has an adjusting
Neben der Verstellpumpe 1 ist eine Regelventileinrichtung vorgesehen, die zwei 2/2-Schaltventile 14 aufweist. Die 2/2-Schaltventile 14 sind in einem Ventilblock 15 zusammengefasst. Ein erstes 2/2-Schaltventil 14 wirkt mit einer Hydraulikfluidzuführung 16 und das zweite 2/2-Schaltventil 14 wirkt mit einer Hydraulikfluidabführung 17 zusammen. Die Hydraulikfluidzuführung 16 ist beispielsweise mit einem Hydraulikfluidspeicher oder einer Hydraulikfluidpumpe verbunden, während die Hydraulikfluidabführung 17 insbesondere mit einem Tank verbunden ist. In der dargestellten Schaltstellung steht das mit der Hydraulikfluidzuführung 16 verbundene 2/2-Schaltventil 14 in der Sperrstellung, während das mit der Hydraulikabführung 17 verbundene 2/2-Schaltventil 14 in der Durchgangsstellung steht. Beide 2/2 Schaltventile sind über in dem Ventilblock 15 angeordnete Leitungen 24 miteinander und weiterhin mit dem ersten Verstellraum 12a der Verstellpumpe 1 verbunden, während der zweite Verstellraum 12b bei dieser Ausführungsform insbesondere mit dem Tank verbunden ist. In der dargestellten Schaltstellung ist der Zufluss von Hydraulikfluid von der Hydraulikfluidzuführung 16 in den ersten Verstellraum 12a abgesperrt, während gleichzeitig der erste Verstellraum 12a mit der Hydraulikfluidabführung 17 verbunden ist. Dadurch wird von der Verstellringfeder 13 die dargestellte Verstellung des Verstellrings 10 in die dargestellte Verstellendlage eingestellt. Werden nun beide 2/2-Schaltventile 14 in die jeweils andere Schaltposition verstellt, wird der erste Verstellraum 12a mit Hydraulikfluid gefüllt und verstellt den Verstellarm 11 und damit den Verstellring 10 gegen die Kraft der Verstellringfeder 13 bis zum Erreichen einer Verstellendlage des Verstellarms 11 in dem zweiten Verstellraum 12b. Ist eine entsprechende (Zwischen)-Verstellung und damit Fördermengenverstellung der Verstellpumpe 1 erreicht, wird das mit der Hydraulikfluidzuführung 16 verbundene 2/2-Schaltventil 14 in die Sperrstellung verstellt und die gewünschte Verstellung ist fixiert.In addition to the
Bei dem in
Die Ausführungsform gemäß
Die in
Das in
Dadurch wird die Befüllung beziehungswese Abführung der Verstellräume 12a, 12b mit Hydraulikfluid umgestellt.As a result, the filling relationship of the
Eine ähnliche Ausführungsform ist in
Bei der in
Claims (9)
dadurch gekennzeichnet, dass die Regelventileinrichtung zwei 2/2-Schaltventile (14) aufweist.Variable displacement pump (1) with an adjusting arm (11) having an adjusting ring (10) for adjusting the displacement of the variable displacement pump (1), wherein the adjusting (11) cooperates with an adjusting (12a, 12b) having adjusting cylinder and the adjusting arm (11) in dependence a pressure of a hydraulic fluid in a first adjustment chamber (12a) and in a second adjustment chamber (12b) is adjustable, with a hydraulic fluid supply (16) and a hydraulic fluid discharge (17) to a control valve device, and wherein the control valve device at least with a displacement chamber (12a, 12b ) connected is,
characterized in that the control valve means comprises two 2/2-way valves (14).
dadurch gekennzeichnet, dass die Regelventileinrichtung zwei mal zwei 2/2-Schaltventile (14) aufweist.Variable displacement pump (1) according to claim 1,
characterized in that the control valve means comprises two times two 2/2-way valves (14).
dadurch gekennzeichnet, dass zumindest ein 2/2 Schaltventil (14) in der Hydraulikfluidzuführung (16) zu einem Verstellraum (12a, 12b) und ein 2/2 Schaltventil (14) in der Hydraulikfluidabführung (17) zu einem Verstellraum (12b, 12a) angeordnet ist.Variable displacement pump (1) according to claim 1 or 2,
characterized in that at least one 2/2 switching valve (14) in the hydraulic fluid supply (16) to a displacement chamber (12a, 12b) and a 2/2 switching valve (14) in the hydraulic fluid discharge (17) to a displacement chamber (12b, 12a) is arranged.
dadurch gekennzeichnet, dass zumindest ein 2/2 Schaltventil (14) ein 2/2 Proportionalschaltventil (14a) ist.Variable displacement pump (1) according to one of the preceding claims,
characterized in that at least one 2/2 switching valve (14) is a 2/2 proportional switching valve (14a).
dadurch gekennzeichnet, dass der Verstellring (10) mit einer Verstellringfeder (13) zusammenwirkt, und dass der Verstellarm (11) von der Verstellringfeder (13) in eine Verstellendlage in einem Verstellraum (12a, 12b) verstellbar ist.Variable displacement pump (1) according to one of the preceding claims,
characterized in that the adjusting ring (10) with an adjusting ring spring (13) cooperates, and that the adjusting arm (11) of the adjusting ring spring (13) in a Verstellendlage in a displacement chamber (12a, 12b) is adjustable.
dadurch gekennzeichnet, dass ein Schieberventil (18) vorgesehen ist, das zwischen den zwei 2/2-Schaltventilen (14) und dem Ventilraum (12a, 12b) angeordnet ist.Variable displacement pump (1) according to one of the preceding claims,
characterized in that a slide valve (18) is provided, which is arranged between the two 2/2-switching valves (14) and the valve chamber (12a, 12b).
dadurch gekennzeichnet, dass ein Schaltraum (19) des Schieberventils (18) mit der Hydraulikfluidzuführung (16) verbunden ist.Variable displacement pump (1) according to claim 6,
characterized in that a switching space (19) of the slide valve (18) is connected to the hydraulic fluid supply (16).
dadurch gekennzeichnet, dass die Verstellpumpe (1) eine Flügelzellenpumpe ist.Variable displacement pump (1) according to one of the preceding claims,
characterized in that the variable displacement pump (1) is a vane pump.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015223414.2A DE102015223414A1 (en) | 2015-11-26 | 2015-11-26 | Variable displacement pump with an adjusting arm having adjusting ring for flow adjustment of the variable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3173625A1 true EP3173625A1 (en) | 2017-05-31 |
Family
ID=57218702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16194742.9A Withdrawn EP3173625A1 (en) | 2015-11-26 | 2016-10-20 | Displacement pump with a displacement ring comprising a displacement arm for adjusting the volume displaced by the displacement pump |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3173625A1 (en) |
| DE (1) | DE102015223414A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332112A (en) * | 2019-06-13 | 2019-10-15 | 江苏理工学院 | A kind of ratio differential pressure type variable vane pump |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019112599A1 (en) * | 2019-05-14 | 2020-11-19 | Schwäbische Hüttenwerke Automotive GmbH | Pump with adjustable delivery volume |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2424149A1 (en) * | 1974-05-17 | 1976-04-08 | Bosch Gmbh Robert | CONTROL DEVICE FOR A PUMP |
| JPS53137403A (en) * | 1977-03-17 | 1978-11-30 | Teijin Seiki Co Ltd | Controller for variable-discharge hydraulic pump |
| DE3913414A1 (en) | 1989-04-24 | 1990-10-25 | Walter Schopf | Variable-delivery rotary-vane pump - has compression zone in sections supplying separate hydraulic circuits |
| WO2010006705A2 (en) | 2008-07-15 | 2010-01-21 | Ixetic Bad Homburg Gmbh | Variable displacement pump comprising a flow rate regulator and a pressure valve |
| EP2253847A1 (en) | 2009-05-18 | 2010-11-24 | Pierburg Pump Technology GmbH | Variable capacity lubricant vane pump |
| WO2012149929A2 (en) | 2011-05-05 | 2012-11-08 | Ixetic Bad Homburg Gmbh | Variable displacement pump |
-
2015
- 2015-11-26 DE DE102015223414.2A patent/DE102015223414A1/en active Pending
-
2016
- 2016-10-20 EP EP16194742.9A patent/EP3173625A1/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2424149A1 (en) * | 1974-05-17 | 1976-04-08 | Bosch Gmbh Robert | CONTROL DEVICE FOR A PUMP |
| JPS53137403A (en) * | 1977-03-17 | 1978-11-30 | Teijin Seiki Co Ltd | Controller for variable-discharge hydraulic pump |
| DE3913414A1 (en) | 1989-04-24 | 1990-10-25 | Walter Schopf | Variable-delivery rotary-vane pump - has compression zone in sections supplying separate hydraulic circuits |
| WO2010006705A2 (en) | 2008-07-15 | 2010-01-21 | Ixetic Bad Homburg Gmbh | Variable displacement pump comprising a flow rate regulator and a pressure valve |
| EP2253847A1 (en) | 2009-05-18 | 2010-11-24 | Pierburg Pump Technology GmbH | Variable capacity lubricant vane pump |
| WO2012149929A2 (en) | 2011-05-05 | 2012-11-08 | Ixetic Bad Homburg Gmbh | Variable displacement pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332112A (en) * | 2019-06-13 | 2019-10-15 | 江苏理工学院 | A kind of ratio differential pressure type variable vane pump |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102015223414A1 (en) | 2017-06-01 |
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