EP4522890A1 - Reducteur de vitesse de groupe motopropulseur hybride - Google Patents
Reducteur de vitesse de groupe motopropulseur hybrideInfo
- Publication number
- EP4522890A1 EP4522890A1 EP23726915.4A EP23726915A EP4522890A1 EP 4522890 A1 EP4522890 A1 EP 4522890A1 EP 23726915 A EP23726915 A EP 23726915A EP 4522890 A1 EP4522890 A1 EP 4522890A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electric machine
- speed reducer
- pump
- output shaft
- casing
- 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
Links
Classifications
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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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
- F16H57/0423—Lubricant guiding means mounted or supported on the casing, e.g. shields or baffles for collecting lubricant, tubes or pipes
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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
- B60K1/00—Arrangement or mounting of electrical propulsion units
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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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
- F16H57/0424—Lubricant guiding means in the wall of or integrated with the casing, e.g. grooves, channels, holes
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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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
- F16H57/0426—Means for guiding lubricant into an axial channel of a shaft
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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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/043—Guidance of lubricant within rotary parts, e.g. axial channels or radial openings in shafts
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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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps; Pressure control
- F16H57/0441—Arrangements of pumps
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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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/045—Lubricant storage reservoirs, e.g. reservoirs in addition to a gear sump for collecting lubricant in the upper part of a gear case
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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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0457—Splash lubrication
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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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0467—Elements of gearings to be lubricated, cooled or heated
- F16H57/0476—Electric machines and gearing, i.e. joint lubrication or cooling or heating thereof
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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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0493—Gearings with spur or bevel gears
- F16H57/0494—Gearings with spur or bevel gears with variable gear ratio or for reversing rotary motion
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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
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
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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
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K2001/001—Arrangement or mounting of electrical propulsion units one motor mounted on a propulsion axle for rotating right and left wheels of this axle
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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
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
- B60K2001/006—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric motors
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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
- B60K6/20—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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/48—Parallel type
- B60K2006/4833—Step up or reduction gearing driving generator, e.g. to operate generator in most efficient speed range
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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
- B60K6/20—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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/40—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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the assembly or relative disposition of components
- B60K6/405—Housings
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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
- B60K6/20—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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/48—Parallel type
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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
- B60K6/20—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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
- B60K6/54—Transmission for changing ratio
- B60K6/547—Transmission for changing ratio the transmission being a stepped gearing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/90—Vehicles comprising electric prime movers
- B60Y2200/92—Hybrid vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2306/00—Other features of vehicle sub-units
- B60Y2306/03—Lubrication
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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
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears 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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/0043—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising four forward speeds
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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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
- F16H3/089—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears all of the meshing gears being supported by a pair of parallel shafts, one being the input shaft and the other the output shaft, there being no countershaft involved
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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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/031—Gearboxes; Mounting gearing therein characterised by covers or lids for gearboxes
Definitions
- it may include an internal combustion engine, a clutch, a gearbox and a differential which makes it possible to distribute the torque coming from the gearbox to two drive wheels of the vehicle.
- a water cooling circuit including a main heat exchanger located at the front of the vehicle (the “radiator”), then makes it possible to cool the internal combustion engine in order to prevent it from heating up too much.
- the electric machine is then generally positioned near the internal combustion engine or the radiator, so as to be able to take advantage of the water circuit to be cooled.
- the present invention proposes to incorporate the electric machine with its cooling and lubrication system into the gearbox.
- an electric machine which comprises an output shaft coupled to said at least one shaft of the reducer
- a pump which is actuated by the electric machine and which is adapted to cool and lubricate the electric machine using said lubricating fluid.
- the components of the speed reducer and the electrical machine are lubricated and cooled by the same volume of lubricant, which makes it possible to reduce the overall size of the assembly.
- the lubrication and cooling of the electric machine are ensured by this electric machine, which drives the pump. It is thus possible to provide a fluid flow adjusted to the speed of the electrical machine to ensure always adequate lubrication and cooling, neither too low nor too high (which would reduce efficiency unnecessarily).
- the invention it is notably possible to house the components of the speed reducer and the electrical machine in the same casing.
- the installation of the electric machine in the speed reducer housing then proves to be relatively unrestrictive, in particular because the system allowing it to be cooled is more compact than a water cooling system.
- a speed reduction means is provided, an input of which is coupled to the output shaft of the electric machine and an output of which is coupled to said pump;
- the speed reduction means has a reduction ratio less than 1/2;
- the external casing delimits three distinct chambers, including a first chamber which houses the electrical machine, a second chamber which houses the speed reduction means and a third chamber which houses the pump;
- the speed reduction means and the pump have a common axis of rotation
- the speed reduction means and/or the pump comprises a drive shaft which is located in alignment with the output shaft of the electric machine and which has an internal longitudinal conduit through which the lubricating fluid circulates ;
- the output shaft of the electric machine has, over at least part of its length, an internal longitudinal conduit through which the lubricating fluid circulates;
- the output shaft of the electric machine has at least one radial opening allowing the lubricating fluid circulating in the internal longitudinal conduit to be ejected out of the output shaft.
- the invention also proposes a motor vehicle comprising a powertrain which comprises an internal combustion engine and a speed reducer as mentioned above.
- FIG. 1 is a schematic view of a gearbox according to the invention
- FIG. 2 is a view of a portion of the gearbox housing of Figure 1, on the left of which is shown an electric machine coupled to a speed reduction means and a pump;
- FIG. 3 is a sectional view of the portion of the casing of Figure 2, on which appear the electric machine, the speed reduction means and the pump;
- FIG. 4 is an exploded view of a first part of the gearbox of Figure 1;
- FIG. 5 is an exploded view of a second part of the gearbox of Figure 1, on which the part of Figure 4 is shown in the assembled position;
- FIG. 6 is a view similar to that of Figure 3, on which the oil path is shown.
- FIG 1 there is shown a speed reducer of a group powertrain. This is more precisely a gearbox 10, but as a variant, it could be a simpler reduction gear (single-speed, or even two-speed).
- the powertrain is preferably intended to be installed in a motor vehicle.
- This motor vehicle can come in different forms. For example, it could be a truck, a motorcycle, a plane, a boat... However, it is preferably a car.
- This powertrain is described as hybrid. It then comprises an internal combustion engine (not shown) and an electric machine 200.
- the internal combustion engine comprises a crankshaft which is coupled to the gearbox 10, possibly via a clutch.
- Such a gearbox 10 also houses a main lubrication and cooling circuit 60, which takes a lubricating fluid such as oil from the bottom of the casing 100 to eject it at different locations requiring lubrication. and cooled. This part of the gearbox 10 will not be described here in more detail as it is well known.
- the casing 100 comprises a third tubular part 130, a left end of which is attached against the second part 120 of the casing and a right end of which is closed by a flat wall.
- the oil pump 400 is then installed to the right of the third part 130 of the casing 100, in a chamber 400A which is sealed and which is delimited by the third and fourth parts 130 , 140 of housing 100.
- This oil pump 400 is installed directly on the drive shaft 131, which allows its size to be restricted. It is therefore centered on the axis of rotation A1.
- This type of pump has a flow rate which depends directly on the rotation speed of the drive shaft 301, which is perfectly suited to the needs of the electric machine 200.
- a bore is provided in the third part 130 of the casing 100.
- This bore is here made hollow in the right side of this third part 130 of the casing 100, so that its bottom is formed by the wall in which the opening 131 for the passage of the drive shaft 301 is located.
- the pump then includes an eccentric crown 410 with internal teeth which is placed inside this bore.
- the fourth part 140 of the casing 100 is adapted to rest against the third part 130 to enclose the pump 400.
- it has a disc shape, with four pierced ears allowing the passage of screws which pass through the third part of the casing 100 and are screwed into the second part 120.
- a flat gasket 145 is used to ensure static sealing between these two casing parts 130, 140.
- the fourth part 140 of the casing 100 has a projecting bulge on its external face, which extends in length radially relative to to the axis of rotation A1.
- This bulge internally delimits a radial conduit 142 which makes it possible to bring the oil coming from the pump 400 into an orifice provided longitudinally in the cover, along the axis of rotation A1.
- This orifice is connected inside the drive shaft 301 by a cannula 501 which is fitted into the casing and which can pivot freely relative to this shaft.
- the first bore 137, the intermediate conduit 141 and the radial conduit 142 are made by drilling, which explains the use of plugs 139, 149 placed at their outlet to the outside.
- plugs 139, 149 placed at their outlet to the outside.
- they could be made differently, for example during the casting stage of the casing, or they could be replaced by external pipes in order to guide the flow of oil from the pump discharge zone towards the axis oil return.
- the output shaft 201 of the electric machine 200 When the output shaft 201 of the electric machine 200 is subjected to a rotation speed Q1, it drives, via the speed reduction means 300, the drive shaft 301 at a reduced rotation speed Q2, adapted to the operation of the oil pump 400.
- the toothed wheel 420 will give the eccentric crown 410 an eccentric circular movement which will create suction on the side of the drilling 137 and discharge on the opposite side.
- the flow of oil used to lubricate and cool the electrical machine can reach a maximum value which is greater than 2 L/min, and which is here of the order of 6 L/min when the electric machine reaches a rotation speed of 18,000 rpm.
- the oil supply circuit of the oil pump 400 will preferably include a non-return valve type valve (not shown) in order to prevent the oil pump 400 from rising. (the latter being above the gearbox oil level). It could also include a heat exchanger to cool the oil.
- the lubrication of the speed reduction means can be carried out in several ways. Lifetime lubrication can be used, by enclosing a lubricant in chamber 300A when assembling the gearbox. Alternatively, a filling plug could be provided in the casing allowing a lubricant to be added to this 300A chamber and drained if necessary. Still as a variant, orifices could be provided in the wall separating the chambers 200A, 300A, so that the oil from the electric machine can be projected onto the speed reduction means 300. [0096] The present invention is in no way limited to the embodiment described and represented, but those skilled in the art will be able to make any variation conforming to the invention. [0097] In particular, it could be envisaged that the oil lubricating the components of the gearbox and the electrical machine 100 be stored not in the bottom of the casing, but in a dedicated oil tank located outside the casing, under this last.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- General Details Of Gearings (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2204523A FR3135500B1 (fr) | 2022-05-12 | 2022-05-12 | Réducteur de vitesse de groupe motopropulseur hybride |
| PCT/EP2023/062438 WO2023217871A1 (fr) | 2022-05-12 | 2023-05-10 | Reducteur de vitesse de groupe motopropulseur hybride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4522890A1 true EP4522890A1 (fr) | 2025-03-19 |
Family
ID=82319799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23726915.4A Pending EP4522890A1 (fr) | 2022-05-12 | 2023-05-10 | Reducteur de vitesse de groupe motopropulseur hybride |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4522890A1 (fr) |
| CN (1) | CN119546882A (fr) |
| FR (1) | FR3135500B1 (fr) |
| WO (1) | WO2023217871A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES3034925B2 (es) * | 2024-02-21 | 2026-01-23 | Sinobas Antonio Salces | Acoplamiento mecánico-hidráulico |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005253167A (ja) * | 2004-03-03 | 2005-09-15 | Hitachi Ltd | 車両駆動装置及びそれを用いた電動4輪駆動車両 |
| JP4770947B2 (ja) * | 2009-03-02 | 2011-09-14 | トヨタ自動車株式会社 | 車両の動力伝達装置 |
| JP2019129608A (ja) * | 2018-01-24 | 2019-08-01 | トヨタ自動車株式会社 | 車両用駆動装置 |
-
2022
- 2022-05-12 FR FR2204523A patent/FR3135500B1/fr active Active
-
2023
- 2023-05-10 WO PCT/EP2023/062438 patent/WO2023217871A1/fr not_active Ceased
- 2023-05-10 EP EP23726915.4A patent/EP4522890A1/fr active Pending
- 2023-05-10 CN CN202380052953.XA patent/CN119546882A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR3135500B1 (fr) | 2024-05-24 |
| CN119546882A (zh) | 2025-02-28 |
| FR3135500A1 (fr) | 2023-11-17 |
| WO2023217871A1 (fr) | 2023-11-16 |
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