DE102019201135A1 - Method for warming up a hydrostatic-mechanical power split transmission - Google Patents
Method for warming up a hydrostatic-mechanical power split transmission Download PDFInfo
- Publication number
- DE102019201135A1 DE102019201135A1 DE102019201135.7A DE102019201135A DE102019201135A1 DE 102019201135 A1 DE102019201135 A1 DE 102019201135A1 DE 102019201135 A DE102019201135 A DE 102019201135A DE 102019201135 A1 DE102019201135 A1 DE 102019201135A1
- Authority
- DE
- Germany
- Prior art keywords
- power split
- split transmission
- hydrostatic
- pressure medium
- procedure 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
- F16H61/421—Motor capacity control by electro-hydraulic control means, e.g. using solenoid valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/4078—Fluid exchange between hydrostatic circuits and external sources or consumers
- F16H61/4104—Flushing, e.g. by using flushing valves or by connection to exhaust
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
- F16H61/431—Pump capacity control by electro-hydraulic control means, e.g. using solenoid valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/68—Inputs being a function of gearing status
- F16H2059/6838—Sensing gearing status of hydrostatic transmissions
- F16H2059/6846—Sensing gearing status of hydrostatic transmissions the flow in hydrostatic transmissions circuits, e.g. high, low or differential pressures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
- F16H47/02—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type
- F16H47/04—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the mechanical gearing being of the type with members having orbital motion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/4165—Control of cooling or lubricating
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
Um ein hydrostatisch-mechanisches Leistungsverzweigungsgetriebe schneller aufzuwärmen, wird unterhalb einer zuvor definierten Temperatur des Druckmittels das Joch 3 so verstellt, dass Druckmittel über das Spülventil 9 ausgespeist wird. Dabei wird die Bremse des Fahrzeugs oder des hydrostatisch-mechanischen Leistungsverzweigungsgetriebes im Schließsinne betätigt.In order to warm up a hydrostatic-mechanical power split transmission more quickly, the yoke 3 is adjusted below a previously defined temperature of the pressure medium in such a way that pressure medium is fed out via the flushing valve 9. The brake of the vehicle or the hydrostatic-mechanical power split transmission is actuated in the closing direction.
Description
Die Erfindung bezieht sich auf ein Verfahren zum Aufwärmen eines hydrostatisch-mechanischen Leistungsverzweigungsgetriebes nach der im Oberbegriff des Hauptanspruchs näher definierten Art.The invention relates to a method for warming up a hydrostatic-mechanical power split transmission according to the kind defined in the preamble of the main claim.
Gattungsgemäße hydrostatisch-mechanische Leistungsverzweigungsgetriebe werden beispielsweise in Arbeitsmaschinen, wie Radlader oder Dumper, verwendet. Bei sehr tiefen Temperaturen muss das Druckmittel vorgewärmt werden, da nur ab einer bestimmten Temperatur das hydrostatisch-mechanische Leistungsverzweigungsgetriebe zuverlässig arbeitet.Generic hydrostatic-mechanical power split transmissions are used, for example, in work machines such as wheel loaders or dumpers. At very low temperatures, the pressure medium must be preheated, since the hydrostatic-mechanical power split transmission only works reliably from a certain temperature.
Die
Die
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Verfahren zum Aufwärmen eines hydrostatisch-mechanischen Leistungsverzweigungsgetriebes zu schaffen, mittels welchem die Zeit der Erwärmung verkürzt werden kann.The present invention has for its object to provide a method for warming up a hydrostatic-mechanical power split transmission by means of which the heating time can be shortened.
Die Aufgabe wird mit einem auf die kennzeichnenden Merkmale des Hauptanspruchs aufweisenden gattungsgemäßen Verfahren gelöst.The object is achieved with a generic method having the characterizing features of the main claim.
Erfindungsgemäß werden die Kupplungen im Leistungsverzweigungsgetriebe so im Schließsinne betätigt, dass eine Wirkverbindung von der Antriebswelle zur Abtriebswelle hergestellt wird. Gleichzeitig wird die Antriebswelle von einem Antriebsmotor, beispielsweise einem Elektromotor oder einem Verbrennungsmotor, angetrieben. Nun wird die stufenlos verstellbare hydrostatische Einheit des Leistungsverzweigungsgetriebes so verstellt, dass zwischen den Arbeitsleitungen der Hydrostaten eine Druckdifferenz entsteht. Die Druckdifferenz wir so weit erhöht, bis ein Spülventil im Öffnungssinne betätigt wird. Durch das Spülventil kann nun Druckmittel aus der Arbeitsleitung entweichen, welche den niedrigeren Druck aufweist. Das Druckmittel wird von einer Speisepumpe über ein Einspeiseventil wieder in den geschlossenen Kreislauf des hydrostatischen Leistungszweigs eingespeist.According to the invention, the clutches in the power split transmission are actuated in the closing direction in such a way that an operative connection is established from the drive shaft to the output shaft. At the same time, the drive shaft is driven by a drive motor, for example an electric motor or an internal combustion engine. Now the continuously variable hydrostatic unit of the power split transmission is adjusted so that a pressure difference arises between the working lines of the hydrostats. The pressure difference is increased until a flush valve is actuated in the opening direction. The flushing valve can now release pressure medium from the working line, which has the lower pressure. The pressure medium is fed back into the closed circuit of the hydrostatic power branch by a feed pump via a feed valve.
Indem eine Bremse im oder außerhalb des Getriebes betätigt wird, beispielsweise im Getriebe entsprechende Kupplungen oder außerhalb des Getriebes eine Betriebsbremse des Fahrzeugs, ist es möglich, auf der Abtriebswelle des Leistungsverzweigungsgetriebes ein Drehmoment abzustützen. Die Leistung, welche vom Antriebsmotor über die Antriebswelle in das Leistungsverzweigungsgetriebe gelangt, wird somit bei stehender Abtriebswelle in Wärme umgewandelt. Indem das Druckmittel zuerst die hydrostatische Einheit durchfließt und erst anschließend aus dem geschlossenen Kreis ausgespeist wird, ist eine schnelle Erwärmung des Druckmittels gewährleistet.By actuating a brake in or outside the transmission, for example in the transmission corresponding couplings or outside the transmission a service brake of the vehicle, it is possible to support a torque on the output shaft of the power split transmission. The power that reaches the power split transmission from the drive motor via the drive shaft is thus converted into heat when the output shaft is stationary. Because the pressure medium first flows through the hydrostatic unit and is only subsequently fed out of the closed circuit, rapid heating of the pressure medium is ensured.
Das Leistungsverzweigungsgetriebe ist beispielsweise wie ein Leistungsverzweigungsgetriebe der
Weitere Merkmale sind der Figurenbeschreibung zu entnehmen.Further features can be found in the description of the figures.
Die einzige Figur zeigt einen Teil des stufenlos verstellbaren hydrostatischen Leistungszweigs mit einer hydrostatischen Maschine
Um das hydrostatisch-mechanische Leistungsverzweigungsgetriebe aufzuwärmen, wird mindestens eine Bremse innerhalb oder außerhalb des Leistungsverzweigungsgetriebes so getätigt, dass die Abtriebswelle des Leistungsverzweigungsgetriebes gebremst ist. Durch Verstellen des Jochs
Das Verfahren zum Aufwärmen eines hydrostatisch-mechanischen Leistungsverzweigungsgetriebes wird automatisch gestartet, wenn ein Temperatursensor eine Temperatur des Druckmittels unterhalb eines zuvor definierten Wertes detektiert. Das Verfahren zum Aufwärmen des hydrostatisch-mechanischen Leistungsverzweigungsgetriebes wird beendet, wenn der Temperatursensor eine Temperatur gleich oder oberhalb einer zuvor definierten Temperatur detektiert.The method for warming up a hydrostatic-mechanical power split transmission is started automatically when a temperature sensor detects a temperature of the pressure medium below a previously defined value. The method for warming up the hydrostatic-mechanical power split transmission is ended when the temperature sensor detects a temperature equal to or above a previously defined temperature.
BezugszeichenlisteReference list
- 11
- hydrostatische Maschinehydrostatic machine
- 22nd
- hydrostatische Maschinehydrostatic machine
- 33rd
- Jochyoke
- 44th
- ArbeitsleitungWork management
- 55
- ArbeitsleitungWork management
- 66
- ArbeitsleitungWork management
- 77
- ArbeitsleitungWork management
- 88th
- EinspeiseventilInfeed valve
- 99
- SpülventilFlush valve
- 1010th
- DruckmittelreservoirPressure medium reservoir
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturPatent literature cited
- DE 102016221126 A1 [0003]DE 102016221126 A1 [0003]
- DE 102012005824 A1 [0004]DE 102012005824 A1 [0004]
- DE 102008040443 A1 [0009]DE 102008040443 A1 [0009]
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019201135.7A DE102019201135A1 (en) | 2019-01-29 | 2019-01-29 | Method for warming up a hydrostatic-mechanical power split transmission |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019201135.7A DE102019201135A1 (en) | 2019-01-29 | 2019-01-29 | Method for warming up a hydrostatic-mechanical power split transmission |
Publications (1)
Publication Number | Publication Date |
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DE102019201135A1 true DE102019201135A1 (en) | 2020-07-30 |
Family
ID=71524264
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102019201135.7A Pending DE102019201135A1 (en) | 2019-01-29 | 2019-01-29 | Method for warming up a hydrostatic-mechanical power split transmission |
Country Status (1)
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DE (1) | DE102019201135A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220049466A1 (en) * | 2020-08-15 | 2022-02-17 | Kubota Corporation | Working machine |
DE102023203332A1 (en) | 2023-04-13 | 2024-02-29 | Zf Friedrichshafen Ag | Method for heating a gearbox for a work machine |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008040443A1 (en) | 2008-07-16 | 2010-01-21 | Zf Friedrichshafen Ag | Power split transmission for wheel loader, has gear wheels and clutches arranged on shafts that are arranged at distance to each other, where one of clutches is arranged on each shaft |
DE102012005824A1 (en) | 2012-03-22 | 2013-09-26 | Robert Bosch Gmbh | Hydrostatic drive |
DE102015208008A1 (en) * | 2015-04-30 | 2016-11-03 | Zf Friedrichshafen Ag | Process for heating a hydrostatic-mechanical power split transmission |
DE102016221126A1 (en) | 2016-10-26 | 2018-04-26 | Zf Friedrichshafen Ag | Method for performing a cold start |
-
2019
- 2019-01-29 DE DE102019201135.7A patent/DE102019201135A1/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008040443A1 (en) | 2008-07-16 | 2010-01-21 | Zf Friedrichshafen Ag | Power split transmission for wheel loader, has gear wheels and clutches arranged on shafts that are arranged at distance to each other, where one of clutches is arranged on each shaft |
DE102012005824A1 (en) | 2012-03-22 | 2013-09-26 | Robert Bosch Gmbh | Hydrostatic drive |
DE102015208008A1 (en) * | 2015-04-30 | 2016-11-03 | Zf Friedrichshafen Ag | Process for heating a hydrostatic-mechanical power split transmission |
DE102016221126A1 (en) | 2016-10-26 | 2018-04-26 | Zf Friedrichshafen Ag | Method for performing a cold start |
Non-Patent Citations (1)
Title |
---|
GROTE, K.-H. ; FELDHUSEN, J.: Dubbel: Taschenbuch für den Maschinenbau. 22. Auflage. Berlin, Heidelberg: Springer, 2007. S. H14, H15.-ISBN 978-3-540-49714-1 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220049466A1 (en) * | 2020-08-15 | 2022-02-17 | Kubota Corporation | Working machine |
US11814815B2 (en) * | 2020-08-15 | 2023-11-14 | Kubota Corporation | Working machine |
DE102023203332A1 (en) | 2023-04-13 | 2024-02-29 | Zf Friedrichshafen Ag | Method for heating a gearbox for a work machine |
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Legal Events
Date | Code | Title | Description |
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R079 | Amendment of ipc main class |
Free format text: PREVIOUS MAIN CLASS: F16H0047020000 Ipc: F16H0047040000 |
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R163 | Identified publications notified |