AT506883A2 - Drive system for vehicle i.e. commercial vehicle, has hydrostatic transmission, and operating hydraulic unit that is connected with mechanical drive train at side of input shaft and exhibits hydraulic energy storage - Google Patents
Drive system for vehicle i.e. commercial vehicle, has hydrostatic transmission, and operating hydraulic unit that is connected with mechanical drive train at side of input shaft and exhibits hydraulic energy storage Download PDFInfo
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- AT506883A2 AT506883A2 AT0134809A AT13482009A AT506883A2 AT 506883 A2 AT506883 A2 AT 506883A2 AT 0134809 A AT0134809 A AT 0134809A AT 13482009 A AT13482009 A AT 13482009A AT 506883 A2 AT506883 A2 AT 506883A2
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/08—Prime-movers comprising combustion engines and mechanical or fluid energy storing means
- B60K6/12—Prime-movers comprising combustion engines and mechanical or fluid energy storing means by means of a chargeable fluidic accumulator
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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
- F16H61/4078—Fluid exchange between hydrostatic circuits and external sources or consumers
- F16H61/4096—Fluid exchange between hydrostatic circuits and external sources or consumers with pressure accumulators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/08—Prime-movers comprising combustion engines and mechanical or fluid energy storing means
- B60K6/12—Prime-movers comprising combustion engines and mechanical or fluid energy storing means by means of a chargeable fluidic accumulator
- B60K2006/126—Prime-movers comprising combustion engines and mechanical or fluid energy storing means by means of a chargeable fluidic accumulator the hydraulic accumulator starts the engine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K25/00—Auxiliary drives
- B60K25/02—Auxiliary drives directly from an engine shaft
- B60K2025/026—Auxiliary drives directly from an engine shaft by a hydraulic transmission
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N7/00—Starting apparatus having fluid-driven auxiliary engines or apparatus
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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
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
- F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
- F16H37/0833—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths
- F16H37/084—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths at least one power path being a continuously variable transmission, i.e. CVT
- F16H2037/0866—Power split variators with distributing differentials, with the output of the CVT connected or connectable to the output shaft
- F16H2037/0873—Power split variators with distributing differentials, with the output of the CVT connected or connectable to the output shaft with switching, e.g. to change ranges
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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
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
- F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
- F16H37/0833—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths
- F16H37/084—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths at least one power path being a continuously variable transmission, i.e. CVT
- F16H2037/088—Power split variators with summing differentials, with the input of the CVT connected or connectable to the input shaft
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
Abstract
Description
5591755917
Die Erfindung betrifft ein Antriebssystem für ein Fahrzeug mit einem leistungsverzweigenden Getriebe zwischen einer Eingangs- und einer Ausgangswelle, mit einem mechanischen Antriebsstrang zur mechanischen Kraftübertragung und zwischen der Eingangs- und Ausgangswelle, einem hydrostatischen Getriebe mit zumindest einer hydraulischen Energiespeichereinheit und mit einer eingangsseitigen und einer ausgangsseitigen hydrostatischen Maschine zur hydraulischen Kraftübertragung zwischen der Eingangswelle und der Ausgangswelle, wobei der mechanische Antriebsstrang und das hydrostatische Getriebe über das leistungsverzweigende Getriebe miteinander verbunden sind.The invention relates to a drive system for a vehicle with a power-split transmission between an input and an output shaft, with a mechanical drive train for mechanical power transmission and between the input and output shaft, a hydrostatic transmission with at least one hydraulic energy storage unit and with an input side and an output side hydrostatic machine for hydraulic power transmission between the input shaft and the output shaft, wherein the mechanical drive train and the hydrostatic transmission are interconnected via the power split transmission.
Weiters betrifft die Erfindung ein Verfahren zum Betreiben eines Antriebssystems mit einem leistungsverzweigenden Getriebe zwischen einer Eingangs- und einer Ausgangswelle, einem mechanischen Antriebsstrang zur mechanischen Kraftübertragung zwischen der Eingangs- und der Ausgangswelle und einem hydrostatischen Getriebe mit zumindest einem hydraulischen Energiespeicher und mit einer eingangsseitigen und einer ausgangsseitigen hydrostatischen Maschine zur hydraulischen Kraftübertragung zwischen der Eingangswelle und der Ausgangswelle, wobei der mechanische Antriebsstrang und das hydrostatische Getriebe über das leistungsverzweigende Getriebe miteinander verbunden sind, wobei in einem ersten Betriebsmodus die Ausgangswelle mechanisch über den mechanischen Antriebsstrang, und in einem zweiten Betriebsmodus die Ausgangswelle hydraulisch über das hydrostatische Getriebe angetrieben wird und wobei in einem dritten Betriebsmodus zumindest ein Teil der mechanischen Antriebsenergie im hydraulischen Energiespeicher des hydrostatischen Getriebes gespeichert wird.Furthermore, the invention relates to a method for operating a drive system with a power-split transmission between an input and an output shaft, a mechanical drive train for mechanical power transmission between the input and the output shaft and a hydrostatic transmission with at least one hydraulic energy storage and with an input side and a output side hydrostatic machine for hydraulic power transmission between the input shaft and the output shaft, wherein the mechanical drive train and the hydrostatic transmission are interconnected via the power split transmission, wherein in a first operating mode, the output shaft mechanically via the mechanical drive train, and in a second operating mode, the output shaft hydraulically is driven by the hydrostatic transmission and wherein in a third mode of operation, at least a part of the mechanical drive energy in hydra the energy storage of the hydrostatic transmission is stored.
Aus der WO 2008/033 378 Al ist ein Antriebssystem mit einem leistungsverzweigenden Getriebe zwischen einer Eingangs- und einer Ausgangswelle, einem mechanischen Antriebsstrang und einem hydrostatischen Getriebe bekannt, wobei das hydrostatische Getriebe einen Niederdruckspeicher und einen Hochdruckspeicher zur hydraulischen Energiespeicherung aufweist. Mit dieser Anordnung lässt sich ein rein mechanischer, ein rein hydraulischer oder ein gemischter Fährbetrieb ermöglichen. Weiters ist es möglich, Verzögerungsenergie im hydraulischen Energiespeicher zwischenzuspeichern und später zum Antreiben des Fahrzeuges einzusetzen.WO 2008/033 378 A1 discloses a drive system with a power-split transmission between an input shaft and an output shaft, a mechanical drive train and a hydrostatic transmission, wherein the hydrostatic transmission has a low-pressure accumulator and a high-pressure accumulator for hydraulic energy storage. With this arrangement, a purely mechanical, a purely hydraulic or a mixed ferry operation can be made possible. Furthermore, it is possible to temporarily store delay energy in the hydraulic energy store and to use it later for driving the vehicle.
Weiters ist aus der WO 2008/049 635 Al ein hydrostatischer Antrieb in einem offenen Kreislauf bekannt, welcher eine Hydropumpe und einen Hydromotor umfasst. Die Hydropumpe und der Hydromotor sind über eine Förderleitung mit- einander verbunden. Ferner umfasst der hydrostatische Antrieb ein Speicherelement zur Speicherung von Druckenergie. Eine stromabwärts des Hydromotors angeordnete erste Ventileinrichtung verbindet wechselweise den stromabwärti-gen Anschluss des Hydromotors mit einem Tankvolumen oder dem Speicherelements. Auf diese Weise lässt sich im Verzögerungsbetrieb frei werdende Energie rückgewinnen.Furthermore, WO 2008/049 635 A1 discloses a hydrostatic drive in an open circuit, which comprises a hydraulic pump and a hydraulic motor. The hydraulic pump and the hydraulic motor are connected to one another via a delivery line. Furthermore, the hydrostatic drive comprises a storage element for storing pressure energy. A first valve device arranged downstream of the hydraulic motor alternately connects the downstream connection of the hydraulic motor with a tank volume or the storage element. In this way, energy released in the deceleration mode can be recovered.
Die WO 2008/037 461 Al offenbart eine Energiespeichereinheit für ein hydrostatisch - mechanisches Antriebssystem. Die Energiespeichereinheit umfasst mindestens eine hydrostatische Maschine, die über eine mechanische Schnittstelle mit dem Antriebssystem verbindbar ist. Ferner umfasst die Energiespeichereinheit ein Speicherelement, das über eine Speicherleitung mit der hydrostatischen Maschine verbunden ist. Die Speicherleitung ist mit einer hydraulischen Schnittstelle verbindbar, wobei die hydraulische Schnittstelle zur Verbindung der Energiespeichereinheit mit dem Antriebssystem vorgesehen ist.WO 2008/037 461 A1 discloses an energy storage unit for a hydrostatic-mechanical drive system. The energy storage unit comprises at least one hydrostatic machine which can be connected to the drive system via a mechanical interface. Furthermore, the energy storage unit comprises a storage element which is connected via a storage line to the hydrostatic machine. The storage line can be connected to a hydraulic interface, the hydraulic interface being provided for connecting the energy storage unit to the drive system.
Nutzfahrzeuge und Arbeitsmaschinen weisen üblicherweise eine Arbeitshydraulik zum Betreiben von Arbeitsmaschinen, Geräten, Handhabungseinrichtungen oder dergleichen auf.Commercial vehicles and work machines usually have a working hydraulics for operating machines, equipment, handling equipment or the like.
Aufgabe der Erfindung ist es, ein Antriebssystem zu schaffen, bei dem auch die Arbeitshydraulikeinheit in die Energierückgewinnung von frei werdender Energie miteinbezogen wird.The object of the invention is to provide a drive system in which the working hydraulic unit is included in the energy recovery of energy released.
Erfindungsgemäß wird dies dadurch erreicht, dass eine Arbeitshydraulikeinheit mit dem mechanischen Antriebsstrang, vorzugsweise auf der Seite der Eingangswelle antriebsverbunden ist, wobei die Arbeitshydraulikeinheit zumindest einen hydraulischen Energiespeicher aufweist. Vorzugsweise ist dabei vorgesehen, dass eine hydrostatische Maschine des hydrostatischen Getriebes mit einer hydrostatischen Maschine der Arbeitshydraulik drehverbunden ist.According to the invention, this is achieved in that a working hydraulic unit is drive-connected to the mechanical drive train, preferably on the side of the input shaft, wherein the working hydraulic unit has at least one hydraulic energy store. Preferably, it is provided that a hydrostatic machine of the hydrostatic transmission is rotatably connected to a hydrostatic machine working hydraulics.
Besonders vorteilhaft ist es, wenn das hydrostatische Getriebe hydraulisch von der Arbeitshydraulikeinheit getrennt ist. Dies ermöglicht einen modularen einfachen Aufbau, wobei eine leichte Anpassung an individuelle Bedürfnisse einer Anwendung durchgeführt werden kann. Die separaten hydraulischen Kreise ermöglichen weiters eine einfache Regelung, wobei auch unterschiedliche Druckniveaus für den Arbeitskreis und den Fahrkreis, insbesondere mit unterschiedlichen Druckmedien, verwendet werden können. Insbesondere ist es möglich, unterschiedliche Reinheitsanforderungen an die beiden hydraulischen Kreise zu definieren (üblicherweise sind die Anforderungen im Arbeitshydraulikkreis weniger streng als im Antriebshydraulikkreis).It is particularly advantageous if the hydrostatic transmission is hydraulically separated from the working hydraulic unit. This allows for a modular, simple construction, whereby an easy adaptation to individual needs of an application can be carried out. The separate hydraulic circuits also allow easy control, with different pressure levels for the working and the circle, especially with different media can be used. In particular, it is possible to define different purity requirements for the two hydraulic circuits (usually the requirements in the working hydraulic circuit are less stringent than in the drive hydraulic circuit).
Das leistungsverzweigende Getriebe kann entweder mit einer eingangsseitigen hydraulischen Maschine oder einer ausgangsseitigen hydraulischen Maschine des hydrostatischen Getriebes verbunden sein.The power-split transmission may be connected to either an input-side hydraulic machine or an output-side hydraulic machine of the hydrostatic transmission.
Eine besonders effektive Energierückgewinnung ist möglich, wenn frei werdende potentielle Energie einer mit der Eingangswelle verbundenen Arbeitshydraulikeinheit in zumindest einem hydraulischen Energiespeicher des hydrostatischen Getriebes und/oder der Arbeitshydraulikeinheit gespeichert wird, wobei vorzugsweise Verzögerungsenergie des Fahrzeuges in zumindest einer hydraulischen Energiespeichereinheit des hydrostatischen Getriebes und/oder der Arbeitshydraulikeinheit gespeichert wird.A particularly effective energy recovery is possible when stored potential energy of a connected to the input shaft working hydraulic unit is stored in at least one hydraulic energy storage of the hydrostatic transmission and / or the working hydraulic unit, preferably deceleration energy of the vehicle in at least one hydraulic energy storage unit of the hydrostatic transmission and / or the working hydraulic unit is stored.
Dabei ist es besonders vorteilhaft, wenn Energie aus zumindest einem hydraulischen Energiespeicher des hydrostatischen Getriebes und/oder der Arbeitshydraulikeinheit zum Starten einer Brennkraftmaschine des Antriebssystems und/oder zum Antreiben des Fahrzeuges verwendet wird.It is particularly advantageous if energy from at least one hydraulic energy store of the hydrostatic transmission and / or the working hydraulic unit for starting an internal combustion engine of the drive system and / or for driving the vehicle is used.
Die Erfindung wird im folgenden anhand der Figuren näher erläutert.The invention will be explained in more detail below with reference to FIGS.
Es zeigen schematisch Fig. 1 ein erfindungsgemäßes Antriebssystem in einer ersten Ausführungsvariante und Fig. 2 ein erfindungsgemäßes Antriebssystem in einer zweiten Ausführungsvariante.1 shows a drive system according to the invention in a first embodiment, and FIG. 2 shows a drive system according to the invention in a second embodiment.
Fig. 1 zeigt ein Antriebssystem 1 eines Fahrzeuges 2 mit einem durch ein Planetengetriebe gebildeten leistungsverzweigenden Getriebe 3 zwischen einer Eingangswelle 4 und einer Ausgangswelle 5. Die Eingangswelle 4 wird durch eine Brennkraftmaschine 6 angetrieben. Das Antriebssystem 1 weist einen mechanischen Antriebsstrang 7 und ein hydrostatisches Getriebe 8 auf. Des weiteren kann zwischen dem hydrostatischen Getriebe 8 und der Ausgangswelle 5 eine Schaltstufe 9 sowie ein Wendegetriebe 10 angeordnet sein (Fig. 2).1 shows a drive system 1 of a vehicle 2 with a power-split transmission 3 formed by a planetary gear between an input shaft 4 and an output shaft 5. The input shaft 4 is driven by an internal combustion engine 6. The drive system 1 has a mechanical drive train 7 and a hydrostatic transmission 8. Furthermore, between the hydrostatic transmission 8 and the output shaft 5, a switching stage 9 and a reversing gear 10 may be arranged (Fig. 2).
Mit der Eingangswelle 4 ist weiters eine Arbeitshydraulikeinheit 11 wirkverbunden.With the input shaft 4 is further a working hydraulic unit 11 operatively connected.
Das hydrostatische Getriebe 8 weist eine eingangsseitige hydrostatische Maschine 12 und eine ausgangsseitige hydrostatische Maschine 13 auf. Zur Energierückgewinnung, insbesondere bei Verzögerungsvorgängen, sind ein als Hochdruckspeicher ausgebildeter hydraulischer Energiespeicher 14 und ein Niederdruckspeicher 15 vorgesehen, wobei während der Energiespeicherung das hydraulische Medium des hydrostatischen Getriebes 8 vom Niederdruckspeicher 15 in den Energiespeicher 14 und bei der Nutzung der gespeicherten Energie das hydraulische Medium vom Energiespeicher 14 zum Niederdruckspeicher 15 befördert wird. Durch Regelung der hydrostatischen Maschinen 12, 13 und der • · · · · · • · • ·« ··· ··· · · • · · · · · ···· • · · · · · · ··· ·· ·The hydrostatic transmission 8 has an input-side hydrostatic machine 12 and an output-side hydrostatic machine 13. For energy recovery, especially during deceleration processes, designed as a high-pressure accumulator hydraulic energy storage 14 and a low-pressure accumulator 15 are provided, wherein during the energy storage, the hydraulic medium of the hydrostatic transmission 8 from the low-pressure accumulator 15 in the energy storage 14 and in the use of stored energy, the hydraulic medium from Energy storage 14 is transported to the low-pressure accumulator 15. By controlling the hydrostatic machines 12, 13 and the • · · · · · · · · · · · · · · ············································································ · ·
Schaltventile 16, 17, 18, 19, 20, 21 kann das hydrostatische Getriebe 8 stufenlos an die geförderte Leistung angepasst werden, wobei mechanische Übersehuss-leistung in Energiespeicher 14 gespeichert werden kann. Genauso ist es möglich, an der Antriebswelle 5 Spitzenleistungen abzurufen, indem sowohl die mechanische Energie der Brennkraftmaschine 6, als auch die Energie im Energiespeicher 14 aufsummiert genutzt wird.Switching valves 16, 17, 18, 19, 20, 21, the hydrostatic transmission 8 can be continuously adapted to the funded performance, with mechanical Übersehuss performance can be stored in energy storage 14. It is equally possible to retrieve peak powers at the drive shaft 5 by using both the mechanical energy of the internal combustion engine 6 and the energy accumulated in the energy store 14.
Die Arbeitshydraulikeinheit 11 weist neben einer hydrostatischen Maschine 22 und einer Arbeitsmaschine 23, sowie Schaltventile 24, einen Energiespeicher 27 samt Schaltventil 26 auf, mit welchem frei werdende potentielle Energie der Arbeitsmaschine 23 zwischengespeichert werden kann.In addition to a hydrostatic machine 22 and a working machine 23, as well as switching valves 24, the working hydraulic unit 11 has an energy store 27 together with a switching valve 26, with which potential energy of the working machine 23 released can be temporarily stored.
Die beiden hydraulischen Systeme des hydrostatischen Getriebes 8 und der Arbeitshydraulikeinheit 11 sind mechanisch über das leistungsverzweigende Getriebe 3 oder direkt über eine Welle 28 (Fig. 3) gekoppelt, wodurch mechanisch ein Energieaustausch zwischen den beiden Systemen möglich ist. Die Hydraulikkreise sind aber völlig getrennt. Die hydraulische Trennung hat den Vorteil, dass ein einfacher modularer Aufbau möglich ist, welcher leicht an individuelle Bedürfnisse einer Anwendung angepasst werden kann. Dabei kann die Regelung relativ einfach gestaltet sein. Die hydraulische Trennung der beiden Systeme erlaubt es, die beiden Hydraulikkreise mit unterschiedlichen Druckniveaus auszulegen, es können unterschiedliche Druckmedien verwendet werden. Weiters können unterschiedliche Qualitätsstandards angewandt werden. Üblicherweise sind beispielsweise die Reinheitsanforderungen an Arbeitshydraulikkreise weniger streng als an die hydraulischen Kreise von hydrostatischen Getrieben.The two hydraulic systems of the hydrostatic transmission 8 and the working hydraulic unit 11 are mechanically coupled via the power-splitting transmission 3 or directly via a shaft 28 (FIG. 3), whereby an energy exchange between the two systems is mechanically possible. The hydraulic circuits are completely separate. The hydraulic separation has the advantage that a simple modular design is possible, which can be easily adapted to the individual needs of an application. The control can be designed relatively simple. The hydraulic separation of the two systems makes it possible to design the two hydraulic circuits with different pressure levels, different pressure media can be used. Furthermore, different quality standards can be applied. Usually, for example, the purity requirements of working hydraulic circuits are less stringent than those of the hydraulic circuits of hydrostatic transmissions.
Bei den in den Fig. 1 und 2 dargestellten Ausführungsbeispielen ist das leistungsverzweigende Getriebe 3 im Bereich der antriebsseitigen hydrostatischen Maschine 12 angeordnet. Die hydrostatischen Maschinen 12, 22 des hydrostatischen Getriebes 8 und der Arbeitshydraulikeinheit 11 sind über das leistungsverzweigende Getriebe 3 miteinander gekoppelt.In the embodiments illustrated in FIGS. 1 and 2, the power-split transmission 3 is arranged in the region of the drive-side hydrostatic machine 12. The hydrostatic machines 12, 22 of the hydrostatic transmission 8 and the working hydraulic unit 11 are coupled to each other via the power-split transmission 3.
Davon unterscheidet sich die in Fig. 3 dargestellte Ausführungsvariante dadurch, dass das leistungsverzweigende Getriebe 3 im Bereich der abtrittsseitigen hydrostatischen Maschine 13 angeordnet ist. Die hydrostatischen Maschinen 12, 22 des hydrostatischen Getriebes 8 und der Arbeitshydraulikeinheit 11 sind über eine Welle 28 miteinander gekoppelt und über eine Stirnradstufe 29 mit der durch die Brennkraftmaschine 6 angetriebenen Eingangswelle 4 verbunden.Of this, the embodiment variant shown in FIG. 3 differs in that the power-splitting transmission 3 is arranged in the region of the outlet-side hydrostatic machine 13. The hydrostatic machines 12, 22 of the hydrostatic transmission 8 and the working hydraulic unit 11 are coupled together via a shaft 28 and connected via a spur gear 29 with the driven by the internal combustion engine 6 input shaft 4.
Durch die dargestellten Anordnungen sind alle Kombinationen des Leistungsflusses zwischen den beiden Hochdruckspeichern 14, 27, der Brennkraftmaschine 6, dem Fahrantrieb und der Arbeitshydraulikeinheit 8 möglich. Diese Vielfalt an KombinationsmögiichkeiterFerlaubt ein sehr hohes Rekuperationspotential.By the arrangements shown, all combinations of the power flow between the two high-pressure accumulators 14, 27, the internal combustion engine 6, the traction drive and the working hydraulic unit 8 are possible. This variety of combination possibilities allows a very high recuperation potential.
Die Energie zum Bewegen der Arbeitsljydraulik, für den Fahrantrieb oder zum Starten der Brennkraftmaschine 6 kann entweder aus dem Energiespeicher 27 der Arbeitshydraulikeinheit 11 oder dem Energiespeicher 14 des hydrostatischen Getriebes 8 genommen werden. Weiters kann zum Bewegen der Arbeitshydraulikeinheit 11 und zum Starten der Brennkraftmaschine 6 auch die Verzögerungsenergie des Fahrantriebes genutzt werden. Die potentielle Energie der Arbeitshydraulikeinheit 11 kann für den Fahrantrieb oder zum Starten der Brennkraftmaschine 6 verwendet und/oder in den Energiespeichern 11, 14 zwischengespeichert werden. Darüber hinaus sind auch beliebige Kombinationen der genannten Energieformen möglich.The energy for moving the Arbeitsljydraulik, for the traction drive or for starting the engine 6 can be taken either from the energy storage 27 of the working hydraulic unit 11 or the energy storage 14 of the hydrostatic transmission 8. Furthermore, to move the working hydraulic unit 11 and to start the internal combustion engine 6, the deceleration energy of the traction drive can be used. The potential energy of the working hydraulic unit 11 can be used for the traction drive or for starting the internal combustion engine 6 and / or stored in the energy storage devices 11, 14. In addition, any combinations of the mentioned forms of energy are possible.
Die potentielle Energie der Arbeitshydraulikeinheit 11 kann somit entweder zum Füllen des Energiespeichers 27 der Arbeitshydraulikeinheit 11, zum Füllen des Energiespeichers 14 des hydrostatischen Getriebes 8, zum Antreiben des Fahrantriebes oder zum Starten der Brennkraftmaschine 6 verwendet werden. Die Verzögerungsenergie des Fahrzeuges 2 kann zum Füllen des Energiespeichers 27 der Arbeitshydraulikeinheit 11, zum Füllen des Energiespeichers 14 des hydrostatischen Getriebes 8, zum Bewegen der Arbeitshydraulikeinheit 11 oder zum Starten der Brennkraftmaschine 6 eingesetzt werden. Weiters sind auch Kombinationen der genannten Nutzungsmöglichkeiten möglich.The potential energy of the working hydraulic unit 11 can thus be used either to fill the energy accumulator 27 of the working hydraulic unit 11, to fill the energy accumulator 14 of the hydrostatic transmission 8, to drive the traction drive or to start the internal combustion engine 6. The deceleration energy of the vehicle 2 can be used to fill the energy accumulator 27 of the working hydraulic unit 11, to fill the energy accumulator 14 of the hydrostatic transmission 8, to move the working hydraulic unit 11 or to start the internal combustion engine 6. Furthermore, combinations of the mentioned uses are possible.
Die Energiespeicher 14, 27 können auch als Energiequelle für Hilfsaggregate, wie Lüfter, Lichtmaschine, Wasserpumpe, Luftkompressor, Klimakondensator und andere Nebenabtriebe verwendet werden.The energy storage 14, 27 can also be used as an energy source for auxiliary equipment, such as fans, alternator, water pump, air compressor, air conditioning condenser and other power take-offs.
Die hybride Anwendung des mechanischen Antriebsstrangs 7, des hydrostatischen Getriebes 8 und der Arbeitshydraulikeinheit 11 erlaubt folgende mögliche Betriebsarten: a) Starten der Brenn kraftmaschine 6 aus beiden Energiespeichern 27, 14; b) Rein hydraulisches Bewegen der Arbeitshydraulikeinheit 11 bei stehender Brennkraftmaschine 6; c) Rein hydraulisches Fahren des Fahrzeuges 2 bei stillstehender Brennkraftmaschine 6; d) Direktes Bewegen der Arbeitshydraulikeinheit 11 mit der Verzögerungsenergie des Fahrzeuges 2; f) Speichern der potentiellen Energie aus der Arbeitshydraulikeinheit 11; g) Betreiben der Brennkraftmaschine 6 in seinem Bestverbrauchspunkt auch bei -geringerem Leistungsbedarf zum Füllen der Energiespeicher 14, 27; i**«·*** h) Boostleistung aus den beiden Energiespeichern 14, 27 zur Abdeckung von Leistungsspitzen, dadurch ist down-sizing der Brennkraftmaschine 6 möglich.The hybrid application of the mechanical drive train 7, the hydrostatic transmission 8 and the working hydraulic unit 11 allows the following possible modes of operation: a) starting the internal combustion engine 6 from two energy stores 27, 14; b) purely hydraulic movement of the working hydraulic unit 11 with the internal combustion engine 6; c) purely hydraulic driving of the vehicle 2 with the internal combustion engine 6 stationary; d) moving the working hydraulic unit 11 directly with the deceleration energy of the vehicle 2; f) storing the potential energy from the working hydraulic unit 11; g) operating the internal combustion engine 6 in its best point even at-lower power consumption for filling the energy storage 14, 27; h) boost power from the two energy stores 14, 27 to cover power peaks, thereby down-sizing the internal combustion engine 6 is possible.
Claims (3)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA1348/2009A AT506883B1 (en) | 2009-08-27 | 2009-08-27 | DRIVE SYSTEM FOR A VEHICLE |
| DE102010036817A DE102010036817A1 (en) | 2009-08-27 | 2010-08-03 | Drive system for a vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA1348/2009A AT506883B1 (en) | 2009-08-27 | 2009-08-27 | DRIVE SYSTEM FOR A VEHICLE |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| AT506883A2 true AT506883A2 (en) | 2009-12-15 |
| AT506883A3 AT506883A3 (en) | 2010-06-15 |
| AT506883B1 AT506883B1 (en) | 2012-11-15 |
Family
ID=41402010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ATA1348/2009A AT506883B1 (en) | 2009-08-27 | 2009-08-27 | DRIVE SYSTEM FOR A VEHICLE |
Country Status (2)
| Country | Link |
|---|---|
| AT (1) | AT506883B1 (en) |
| DE (1) | DE102010036817A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010036850A1 (en) * | 2010-08-05 | 2012-02-09 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Starter arrangement for internal combustion engine in motor car, has switchable fluid conduit device supplying pressurized fluid from pressure reservoir to starter device to start engine, where starter device is drivable by fluid |
| FR2970440A1 (en) * | 2011-01-19 | 2012-07-20 | Peugeot Citroen Automobiles Sa | MOTOR PROPELLER SYSTEM FOR VEHICLE |
| FR2971975A1 (en) * | 2011-02-28 | 2012-08-31 | Peugeot Citroen Automobiles Sa | Powertrain system for use in e.g. hydraulic hybrid car, has power transmission device placed between planetary gear train and output device, where device authorizes coupling or decoupling of gear train and output device |
| WO2017209664A1 (en) * | 2016-05-30 | 2017-12-07 | Volvo Construction Equipment Ab | A power system for a work machine |
| US10039234B2 (en) | 2013-04-09 | 2018-08-07 | Cnh Industrial America Llc | Hybrid drive system for a harvester |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202010018254U1 (en) * | 2010-12-16 | 2015-02-12 | Hamm Ag | Self-propelled compacting roller |
| DE102011111924B4 (en) * | 2011-08-31 | 2019-10-31 | Atlas Weyhausen Gmbh | Construction machine, in particular wheel loader or roller |
| WO2014165361A1 (en) * | 2013-04-02 | 2014-10-09 | Parker-Hannifin Corporation | Pump control method and system |
| DE102012222717A1 (en) * | 2012-12-11 | 2014-06-12 | Robert Bosch Gmbh | powertrain |
| FR3004999B1 (en) * | 2013-04-25 | 2016-03-04 | Technoboost | TRACTION CHAIN FOR A HYDRID HYDRAULIC VEHICLE, COMPRISING A CLOSURE MEANS FOR HIGH PRESSURE ACCUMULATORS |
| DE102013227007A1 (en) * | 2013-12-20 | 2015-06-25 | Hamm Ag | Drive system, in particular for a self-propelled construction machine, in particular soil compactor |
| DE102016205933A1 (en) | 2016-04-08 | 2017-10-12 | Danfoss Power Solutions Gmbh & Co. Ohg | Power split transmission |
| DE102016224628A1 (en) | 2016-12-09 | 2018-06-14 | Zf Friedrichshafen Ag | Hydrostatic transmission, and method for operating a hydrostatic transmission |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007012121A1 (en) * | 2006-03-13 | 2007-09-20 | Bosch Rexroth Ag | Commercial vehicle`s drive, has storage unit connected with one of two control lines for storing brake energy, where hydraulic pump and hydraulic motor of power branching transmission are connected over two control lines, respectively |
| US8277352B2 (en) * | 2006-09-12 | 2012-10-02 | Purdue Research Foundation | Power split transmission with energy recovery |
| DE102006046127A1 (en) * | 2006-09-28 | 2008-04-03 | Robert Bosch Gmbh | Energy storage unit |
| DE102006050873A1 (en) | 2006-10-27 | 2008-04-30 | Robert Bosch Gmbh | Hydrostatic drive i.e. traction drive, for e.g. wheel loader, has hydraulic pump and hydraulic motor arranged in open circuit, where downstream connection of hydraulic motor is connected with tank volume or storage unit by valve device |
-
2009
- 2009-08-27 AT ATA1348/2009A patent/AT506883B1/en not_active IP Right Cessation
-
2010
- 2010-08-03 DE DE102010036817A patent/DE102010036817A1/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010036850A1 (en) * | 2010-08-05 | 2012-02-09 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Starter arrangement for internal combustion engine in motor car, has switchable fluid conduit device supplying pressurized fluid from pressure reservoir to starter device to start engine, where starter device is drivable by fluid |
| FR2970440A1 (en) * | 2011-01-19 | 2012-07-20 | Peugeot Citroen Automobiles Sa | MOTOR PROPELLER SYSTEM FOR VEHICLE |
| WO2012098308A1 (en) * | 2011-01-19 | 2012-07-26 | Peugeot Citroen Automobiles Sa | Motorized propulsion system for vehicle |
| FR2971975A1 (en) * | 2011-02-28 | 2012-08-31 | Peugeot Citroen Automobiles Sa | Powertrain system for use in e.g. hydraulic hybrid car, has power transmission device placed between planetary gear train and output device, where device authorizes coupling or decoupling of gear train and output device |
| US10039234B2 (en) | 2013-04-09 | 2018-08-07 | Cnh Industrial America Llc | Hybrid drive system for a harvester |
| WO2017209664A1 (en) * | 2016-05-30 | 2017-12-07 | Volvo Construction Equipment Ab | A power system for a work machine |
| US11186966B2 (en) | 2016-05-30 | 2021-11-30 | Volvo Construction Equipment Ab | Power system for a work machine |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102010036817A1 (en) | 2011-03-03 |
| AT506883A3 (en) | 2010-06-15 |
| AT506883B1 (en) | 2012-11-15 |
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| MM01 | Lapse because of not paying annual fees |
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