DE102018214753B4 - Hydraulic circuit and method for operating a hydraulic circuit - Google Patents
Hydraulic circuit and method for operating a hydraulic circuit Download PDFInfo
- Publication number
- DE102018214753B4 DE102018214753B4 DE102018214753.1A DE102018214753A DE102018214753B4 DE 102018214753 B4 DE102018214753 B4 DE 102018214753B4 DE 102018214753 A DE102018214753 A DE 102018214753A DE 102018214753 B4 DE102018214753 B4 DE 102018214753B4
- Authority
- DE
- Germany
- Prior art keywords
- hydraulic
- hydraulic circuit
- motor
- pump
- return
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20507—Type of prime mover
- F15B2211/20515—Electric motor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20538—Type of pump constant capacity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
- F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
- F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
- F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
- F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to the return line
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
- F15B2211/5157—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a return line
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/55—Pressure control for limiting a pressure up to a maximum pressure, e.g. by using a pressure relief valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/61—Secondary circuits
- F15B2211/611—Diverting circuits, e.g. for cooling or filtering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/62—Cooling or heating means
Landscapes
- Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
Hydraulikkreis umfassend eine Pumpe (2), die von einem Motor (4) angetrieben ist, wobei die Pumpe (2) über eine hydraulische Verbindung (10) mit einem Verbraucher (7) verbunden ist und Hydraulikfluid von einem Vorratsbehälter (6) zu dem Verbraucher (7) über die hydraulische Verbindung (10) pumpt, dadurch gekennzeichnet, dass von der hydraulischen Verbindung (10), stromabwärts der Pumpe (2) und stromaufwärts des Verbrauchers (7), ein Rücklauf (11) mit einem Druckregelventil (3) abzweigt, und der Rücklauf (11) mit der überschüssigen Menge Hydraulikfluid des Druckregelventils (3) mindestens am Motor (4) anliegt. Hydraulic circuit comprising a pump (2) which is driven by a motor (4), the pump (2) being connected to a consumer (7) via a hydraulic connection (10) and hydraulic fluid from a reservoir (6) to the consumer (7) pumps via the hydraulic connection (10), characterized in that a return line (11) with a pressure control valve (3) branches off from the hydraulic connection (10), downstream of the pump (2) and upstream of the consumer (7) , and the return (11) with the excess amount of hydraulic fluid of the pressure control valve (3) is at least on the motor (4).
Description
Die Erfindung betrifft einen Hydraulikkreis umfassend eine Pumpe, die von einem Motor angetrieben ist und Hydraulikfluid von einem Vorratsbehälter zu einem Verbraucher über eine hydraulische Verbindung pumpt, und einen Rücklauf mit einem Druckregelventil.The invention relates to a hydraulic circuit comprising a pump which is driven by a motor and pumps hydraulic fluid from a reservoir to a consumer via a hydraulic connection, and a return with a pressure control valve.
Die Erfindung betrifft des Weiteren ein Verfahren zum Betrieb eines Hydraulikkreises.The invention further relates to a method for operating a hydraulic circuit.
Stand der TechnikState of the art
Aus der
Ferner ist im Vorlauf ein Druckbegrenzungsventil angeordnet, welches einen von der Hydraulikpumpe erzeugten Hydraulikdruck auf einen vorbestimmten maximalen Druck begrenzt. Der Rücklauf des Druckbegrenzungsventils endet im Vorratsbehälter.Furthermore, a pressure limiting valve is arranged in the flow, which limits a hydraulic pressure generated by the hydraulic pump to a predetermined maximum pressure. The return of the pressure relief valve ends in the reservoir.
Wenn ein Druckbegrenzungsventil öffnet, befindet sich die Pumpe und der Elektromotor in einem Betriebspunkt, in dem maximale Leistung, also auch ein maximaler Volumenstrom angefordert werden. Das bedeutet, dass der Motor mit großer Leistung betrieben wird und daher optimale Kühlung braucht.When a pressure relief valve opens, the pump and the electric motor are at an operating point in which maximum performance, i.e. also a maximum volume flow, is requested. This means that the engine is operated with great power and therefore needs optimal cooling.
Ab Druckbegrenzungsventil fällt die nicht gebrauchte Menge an Öl ab und wird in den Vorratsbehälter zurückgeführt.From the pressure relief valve, the unused amount of oil drops and is returned to the reservoir.
Beschreibung der ErfindungDescription of the invention
Es ist daher Aufgabe der Erfindung einen Hydraulikkreis vorzuschlagen, bei dem der Rücklauf des Druckbegrenzungsventils zum Kühlen sowohl des Elektromotors als auch der Elektronikkomponente verwendet wird.It is therefore an object of the invention to propose a hydraulic circuit in which the return of the pressure relief valve is used to cool both the electric motor and the electronic component.
Die Aufgabe wird mit einem Hydraulikkreis gemäß Anspruch 1 gelöst. Dadurch wird die überschüssige Menge des Hydraulikfluids verwendet, um den Motor genau in der Situation zu kühlen, in der er die höchste Leistung abgibt.The object is achieved with a hydraulic circuit according to claim 1. This will use the excess amount of hydraulic fluid to cool the engine exactly in the situation where it is delivering the highest power.
Es ist von Vorteil, wenn der Rücklauf die den Motor ansteuernde Elektronikkomponente kühlt. Damit werden beide Komponenten, die in der Höchstleistung am meisten belastet werden, durch den Rücklauf gekühlt.It is advantageous if the return line cools the electronic component that drives the motor. This means that both components, which are subject to the greatest load at peak performance, are cooled by the return flow.
Vorteilhafterweise erfolgt die Kühlung über mindestens einen Wärmetauscher.The cooling advantageously takes place via at least one heat exchanger.
Alternativ dazu erfolgt die Kühlung direkt an mindestens einer der Komponenten, dem Motor und/oder der Elektronikkomponente direkt durch Umströmen. Dadurch wird ein zusätzlicher Wärmetauscher vermieden und sowohl Motor als auch Elektronikkomponente direkt vom rücklaufenden Öl umströmt.As an alternative to this, cooling takes place directly on at least one of the components, the motor and / or the electronic component, by flowing directly around it. This avoids an additional heat exchanger and the return oil flows directly around both the motor and electronic components.
Beschreibung der FigurDescription of the figure
Die einzige Figur beschreibt einen Hydraulikkreis
Eine Pumpe
Diese Ausführungsform beschreibt die Erfindung beispielhaft. Es muss kein Wärmetauscher
Die Realisierung der Erfindung erfordert, dass der elektrische Motor
Die Hydraulikanordnung
Alternativ zur Verwendung von Wärmetauschern kann die rückgeführte Ölmenge auch direkt über die Komponenten, nämlich den Motor
Das erfindungsgemäße Verfahren besteht aus der Verwendung der überschüssigen Durchflussmengen des Druckregelventils für die direkte Kühlung mindestens einer Komponente, also des Motors
BezugszeichenlisteReference list
- 11
- HydraulikkreisHydraulic circuit
- 22nd
- Pumpepump
- 33rd
- DruckbegrenzungsventilPressure relief valve
- 44th
- Motorengine
- 55
-
5a ,5b Wärmetauscher5a ,5b Heat exchanger - 66
- VorratsbehälterStorage container
- 77
- Verbraucherconsumer
- 88th
- Elektronikkomponente Electronic component
- 1010th
- hydraulische Verbindunghydraulic connection
- 1111
- RücklaufRewind
Claims (5)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018214753.1A DE102018214753B4 (en) | 2018-08-30 | 2018-08-30 | Hydraulic circuit and method for operating a hydraulic circuit |
PCT/DE2019/200081 WO2020043245A1 (en) | 2018-08-30 | 2019-07-16 | Hydraulic circuit and method for operating a hydraulic circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018214753.1A DE102018214753B4 (en) | 2018-08-30 | 2018-08-30 | Hydraulic circuit and method for operating a hydraulic circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102018214753A1 DE102018214753A1 (en) | 2020-03-05 |
DE102018214753B4 true DE102018214753B4 (en) | 2020-07-09 |
Family
ID=67660050
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102018214753.1A Active DE102018214753B4 (en) | 2018-08-30 | 2018-08-30 | Hydraulic circuit and method for operating a hydraulic circuit |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102018214753B4 (en) |
WO (1) | WO2020043245A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD210952A1 (en) * | 1982-10-28 | 1984-06-27 | Weimar Werk Veb | ANALOG MULTIPLE CONTROL FOR PRESSURE-CONTROLLED CONSUMERS |
DE19744599A1 (en) | 1997-10-09 | 1999-04-15 | Volkswagen Ag | Hydraulic circuit with hydraulic medium esp. oil circulating in hydraulic line |
EP2731851B1 (en) * | 2011-07-12 | 2015-09-09 | Volvo Lastvagnar AB | Power steering system with improved cooling for a vehicle |
US9670942B2 (en) | 2012-02-17 | 2017-06-06 | Construction Tools Pc Ab | Separate hydraulic unit with cooling of oil |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2659148B1 (en) * | 2010-12-29 | 2016-03-02 | Eaton Corporation | Case flow augmenting arrangement for cooling variable speed electric motor-pumps |
-
2018
- 2018-08-30 DE DE102018214753.1A patent/DE102018214753B4/en active Active
-
2019
- 2019-07-16 WO PCT/DE2019/200081 patent/WO2020043245A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD210952A1 (en) * | 1982-10-28 | 1984-06-27 | Weimar Werk Veb | ANALOG MULTIPLE CONTROL FOR PRESSURE-CONTROLLED CONSUMERS |
DE19744599A1 (en) | 1997-10-09 | 1999-04-15 | Volkswagen Ag | Hydraulic circuit with hydraulic medium esp. oil circulating in hydraulic line |
EP2731851B1 (en) * | 2011-07-12 | 2015-09-09 | Volvo Lastvagnar AB | Power steering system with improved cooling for a vehicle |
US9670942B2 (en) | 2012-02-17 | 2017-06-06 | Construction Tools Pc Ab | Separate hydraulic unit with cooling of oil |
Also Published As
Publication number | Publication date |
---|---|
WO2020043245A1 (en) | 2020-03-05 |
DE102018214753A1 (en) | 2020-03-05 |
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R012 | Request for examination validly filed | ||
R082 | Change of representative |
Representative=s name: HOFFMANN - EITLE PATENT- UND RECHTSANWAELTE PA, DE |
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R016 | Response to examination communication | ||
R081 | Change of applicant/patentee |
Owner name: HANON SYSTEMS EFP DEUTSCHLAND GMBH, DE Free format text: FORMER OWNER: MAGNA POWERTRAIN BAD HOMBURG GMBH, 61352 BAD HOMBURG, DE |
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Representative=s name: HOFFMANN - EITLE PATENT- UND RECHTSANWAELTE PA, DE |
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R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final |