GB2516262A - Cover element for a rotor carrier of an electric machine - Google Patents

Cover element for a rotor carrier of an electric machine Download PDF

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Publication number
GB2516262A
GB2516262A GB1312738.6A GB201312738A GB2516262A GB 2516262 A GB2516262 A GB 2516262A GB 201312738 A GB201312738 A GB 201312738A GB 2516262 A GB2516262 A GB 2516262A
Authority
GB
United Kingdom
Prior art keywords
cover element
base portion
cover
rotor carrier
electric machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB1312738.6A
Other versions
GB201312738D0 (en
Inventor
Gaurav Kumar
Kuno Fronius
Daniel Mueller
Kiran Rao
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mercedes Benz Group AG
Original Assignee
Daimler AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daimler AG filed Critical Daimler AG
Priority to GB1312738.6A priority Critical patent/GB2516262A/en
Publication of GB201312738D0 publication Critical patent/GB201312738D0/en
Publication of GB2516262A publication Critical patent/GB2516262A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/06—Cast metal casings
    • 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
    • B60K6/20—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 ; 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 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 ; 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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—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 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 motors or the generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • H02K1/30—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • 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
    • 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
    • B60K6/20—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 ; 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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/42—Clutches or brakes
    • B60Y2400/424—Friction clutches
    • B60Y2400/4244—Friction clutches of wet type, e.g. using multiple lamellae
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/006—Structural association of a motor or generator with the drive train of a motor vehicle
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • H02K7/085—Structural association with bearings radially supporting the rotary shaft at only one end of the rotor

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

A one piece cover element 30 for a rotor carrier 22 of an electric machine is designed to cover at least partly a receiving space 28 in the axial direction of the rotor carrier 22. The cover element 30 comprising: a base portion 32 having at least one first through opening 34 for a shaft 20 and being capable of receiving at least one bearing 36 for supporting the cover element 30. At least one collector element 42 for catching and collecting lubricant, which has lubricated/cooled the bearing 36, is arranged on a first side 44 of the base portion and at least one deflector element 48 deflects the lubricant into the space to improve rotor cooling, the lubricant flowing from the collector 42 through at least one second through opening 46 to the deflector 48, the deflector arranged on a second side 50 of the base portion 32. The second side 50 faces away from the first side 44 in the axial direction. The cover element 30 may be made from spheroidal cast iron formed by die, lost form, sand casting employing an integral injection moulding process (SGI). A position sensor is mounted on element 52.

Description

Cover Element for a Rotor Carrier of an Electric Machine The invention relates to a cover element for a rotor carrier of an electric machine.
Electric machines having rotor carriers are well known from, for example, vehicles being designed as hybrid vehicles or electric vehicles. In such a vehicle the electric machine can be operated in, for example, a motor mode in which the vehicle can be driven by the electric machine. For example, the electric machine can also be operated in a generator mode in which mechanical energy can be transformed into electrical energy by the electric machine. Thereby, kinetic energy of the vehicle can be transformed into electric energy thereby decelerating the vehicle. The generated electric energy can be stored in, for example, a battery and used for operating the electric machine in the motor mode afterwards.
Such an electric machine is used in, for example, a transmission of the vehicle so that a shaft of the vehicle, in particular a drive shaft of the transmission can be driven by the electric machine in the motor mode or the electric machine can be driven by the shaft in the generator mode. By integrating the electric machine into transmission a compact hybrid-module can be realized. The rotor carrier bounds a receiving space in the radial direction of the rotor carrier, wherein the shaft can be arranged at least partly in the receiving space. Thereby the outer dimensions of the hybrid-module can be kept very low.
Typically an electric machine comprises a rotor carrier which is also referred to as rotor arm, the rotor carrier serving for carrying at least one magnetic element, the magnetic element being designed as, for example, a laminated core. Depending of the design of electric machine the magnetic element is equipped with at least one permanent magnet or at least one electric winding. Such an electric machine can be found in DE 102008006062 Al, the electric machine being designed as a starter-generator for starting an internal combustion engine.
It is an object of the present invention to provide a cover element for a rotor carrier of an electric machine, the cover element allowing for realizing a particularly good supporting of the rotor carrier as well as a particularly good lubrication, wherein the cover element is capable of being manufactured in a very easy and cost-efficient way and has a particularly low weight.
This object is solved by a cover element for a rotor carrier of an electric machine having the features of patent claim 1. Advantageous embodiments with expedient and non-trivial developments of the invention are indicated in the other patent claims.
A cover element for a rotor carrier of an electric machine according to the present invention is designed to cover a receiving space in the axial direction of the rotor carrier at least partly. The cover element according to the present invention comprises a base portion having at least one first through opening for a shaft. This means that the shaft can penetrate the base portion via the first through opening. For example, the shaft can be a drive shaft or a driven shaft of a vehicle or a transmission of the vehicle, the transmission being also referred to as gear or gearbox. Thus, the electric machine can drive the shaft and/or can be driven by the shaft.
The first through opening is capable of receiving at least one bearing for supporting the cover element. The through opening can be bounded by at least one wall of the base portion in the radial direction of the rotor carrier, wherein the bearing can be supported on the wall so that the cover element and via the cover element the rotor carrier can be supported on a component of the vehicle. The cover element acts as a supporting element for supporting the rotor carrier. For example, the cover element (supporting element) can be designed as a supporting ring of the rotor carrier. For example, the cover element can be supported on the shaft via the bearing or vice versa.
The cover element also comprises at least one collector element for catching and collecting lubricant for lubricating the bearing. The collector element is arranged on a first side of the base portion and protrudes from the base portion at least partly so it can catch the lubricant. For example, the lubricant serves for lubricating and cooling the bearing.
The bearing can be designed as an antifriction bearing which is also referred to as rolling contact bearing.
Furthermore, the cover element comprises at least one deflector element for deflecting the lubricant caught and collected by the collector element and flowing from the collector element to the deflector element through at least one second through opening of the base portion. This means that the base portion has at least one second through opening through which the lubricant collected by the collector element can flow from the collector element to the deflector element. In other words, the second through opening connects the collector element to the deflector element fluidically.
The deflector element is arranged on a second side of the base portion and protruding from the base portion at least partly. The second side faces away from the first side in the axial direction. For example, the first side faces away from the receiving space bounded by the cover element in an assembled state of the electric machine. Thus, the second side faces towards the receiving space.
Since the cover element can be supported by means of the bearing a particularly low friction can be realized. Moreover, a particularly good lubrication can be realized since the lubricant can be caught and deflected into predetermined areas, in particular, into the receiving space.
In order to realize an easy and cost-efficient manufacturing of the cover element as well as a low weight of the cover element, the cover element is formed in one piece. In other words, the base portion, the collector element and the deflector element are formed in one piece. Thereby the number of parts of the cover element and the electric machine as a whole can be kept particularly low. Moreover, assembling steps for assembling separate parts can be avoided.
Further advantages, features, and details of the invention derive from the following description of a preferred embodiment as well as from the drawing. The features and feature combinations previously mentioned in the description as well as the features and feature combinations mentioned in the following description of the figures and/or shown in the figures alone can be employed not only in the respective indicated combination but also in any other combination or taken alone without leaving the scope of the invention.
The drawing shows in: Fig. 1 schematic sectional view of a hybrid-module for a hybrid vehicle, the hybrid-module comprising an electric machine having a rotor carrier having a cover element according to a first embodiment and serving for catching and deflecting oil, supporting the rotor carrier and covering a receiving space of the electric machine in the axial direction of the electric machine, the cover element being formed in one piece; and Fig. 2 part of a schematic sectional view of the cover element according to a second embodiment.
In the figures same elements or elements having the same function are indicated with the same reference sign.
Fig. 1 shows a hybrid-module 10 for a hybrid vehicle having an internal combustion engine in form of a reciprocating piston engine. The hybrid-module comprises a starting clutch 12 form which an outer disc carrier 14 and an inner disc carrier 16 carrying clutch discs 18 can be seen from Fig. 1. The internal combustion engine has a shaft in the form of a crank shaft 20 being a driven shaft. The crank shaft 20 can be connected to a driving shaft of a transmission of the vehicle via the clutch 12.
The hybrid-module 10 also comprises an electric machine having a rotor 21 with a rotor carrier 22. The rotor 21 is, for example, pivotably mounted inside a housing about a rotation axis. The rotor carrier 22 has a carrier part 24 which is also referred to as carrier cup. As can be seen from Fig. 1, the rotor part 24 serves for carrying a magnetic element in the form of a laminated core 26. This means that the laminated core 26 is rigidly connected to the carrier part 24. The carrier part 24 bounds a receiving space 28 in the radial direction of the electric machine and the rotor carrier 22 towards the outside. The clutch 12 is arranged at least partly within the receiving space 28. The crank shaft 20 is arranged partly within the receiving space 28.
The rotor carrier 22 also comprises a cover element 30 which is designed as a ring. The cover element 30 is also referred to as supporting ring since it servers for supporting the carrier part 24. As can be seen from Fig. 1, the cover element 30 is designed to cover the receiving space 28 in the actual direction of the rotor carrier 22 at least partly. In other words, the receiving space 28 is bounded at least partly by the cover element 30 in the axial direction of the rotor carrier 22 towards the outside. The cover element 30 is rigidly connected to the carrier part 24.
As can be seen from an overall view of Figs. I and 2, the cover element 30 has a base portion 32 having a first through opening 34 for the crank shaft 20. The crank shaft 20 penetrates the through opening 34 so that the crank shaft can extend from inside the receiving space 28 through the through opening 34 to the outside of the rotor carrier 22 and the receiving space 28. The first through opening 34 is capable of receiving at least one bearing in the form of a needle roller bearing 36. The through opening 34 is bounded by a wall 38 of the base portion 32 in the radial direction of the rotor carrier 22 and the electric machine. The needle roller bearing 36 is supported on the wall 38 and arranged in the through opening 34. The rotor carrier 22 is supported via the cover element 30 and the needle roller bearing 36 on a further component 40 of the vehicle.
A lubricant in the form of oil is used for cooling and lubricating the needle roller bearing 36. An oil flow path is shown by directional arrows in Fig. 1. The oil coming from the crank shaft 20 flows along the cover element 30 and is caught and collected by a collector element 42 of the cover element 30. The collector element 42 serves for collecting lubricant coming out from the needle roller bearing 36, the lubricant in the form of oil serving for cooling and lubricating the needle roller bearing 36. The collector element 42 is arranged on a first side 44 of the base portion 32 and protrudes from the base portion 32, the first side 44 facing away from the receiving space 28. As can be seen from Fig. 2, the base portion 32 has a second through opening 46 through which the oil caught and collected by the collector element 42 can flow.
The cover element 30 also comprises a deflector element 48 by means of which the oil caught and collected by the collector element 42 and flowing from the collector element 42 to the deflector element 48 is deflected inside the receiving space 28 towards the clutch 12.
The deflector element 48 is arranged on a second side 50 of the cover element 30, the second side 50 facing away from the first side 44 and facing towards the receiving space 28 in the axial direction of the rotor carrier 22. The deflector element 48 also protrudes from the base portion 32. This means that the oil can be guided from the outside of the cover element 30 and the receiving space 28 into the receiving space 28 via the second through opening 46. Thereby, a particularly good cooling of the rotor 21 of the electric machine can be realized.
As can be seen particularly good from Fig. 2, the cover element 30 is formed in one piece. This means that the base portion 32, the collector element 42 and the deflector element 48 are formed in one piece. The collector element 42 and the deflector element 48 are formed as protrusions, and guides for catching, collecting, guiding and deflecting the oil in said way.
The cover element 30 also has a mounting element 52 on which a position sensor 54 is mounted. Thus, the cover element 30 which is a rotor carrier end cover is used for supporting the rotor carrier 22, mounting the position sensor 54, and assisting in the transmission assembly process.
The cover element 30 is designed as a cast component. Thus, casting instead of flow forming and sheet metal forming can be used as a manufacturing process for manufacturing the cover element 30. For example, the cover element 30 is made of cast iron, in particular, spheroidal cast iron. Spheroidal cast iron is also referred to as ductile cast iron (SG cast iron). Spheroidal cast iron has a very good ductility, fluidity and castability. A good fluidity and castability are helpful in achieving minimum wall thicknesses in casting. Moreover, the number of components of the cover element 30 and the electric machine as a whole can be kept particularly low. Furthermore, a very low weight of the cover element 30 can be realized. By using the cover element 30, the wall thickness, weight and cost of other components of the electric machine can be kept low since the cover element 30 can provide a very high stiffness to the electric as a whole.
List of reference signs hybrid-module 12 clutch 14 outer disc carrier 16 inner disc carrier 18 discs crankshaft 21 rotor 22 rotor carrier 24 carrier part 26 laminated core 28 receiving space cover element 32 base portion 34 throug opening 36 needle roller bearing 38 wall component 42 collector element 44 first side 46 through opening 48 deflector element second side 52 mounting element 54 positon sensor

Claims (9)

  1. Claims A cover element (30) for a rotor carrier (22) of an electric machine, the cover element (30) being designed to cover a receiving space (28) in the axial direction of the rotor carrier (22) at least partly, the cover element (30) comprising: -a base portion (32) having at least one first trough opening (34) for a shaft (20), the first through opening (34) being capable of receiving at least one bearing (36) for supporting the cover element (30), -at least one collector element (42) for catching and collecting lubricant for lubricating the bearing (36), the collector element (42) being arranged on a first side (44) of the base portion (32) and protruding from the base portion (32) at least partly, -at least one deflector element (48) for deflecting the lubricant collected by the collector element (42) and flowing from the collectoi element (42) to the deflector element (48) trough at least one second trough opening (46) of the base portion (32). the deflector element (48) being arranged on a second side (50) of the base portion (32) and protruding from the base portion (32) at least partly, the second side (50) facing away from the first side (44) in the axial direction, wherein the cover element (30) is formed in one piece.
  2. 2. The cover element (30) according to claim 1, characterized in that the cover element (30) is designed as a cast component.
  3. 3. The cover element (30) according to claim 2, characterized in that the cover element (30) is made by die casting.
  4. 4. The cover element (30) according to any one of claims 2 or 3, characterized in that the cover element (30) is made by a lost form casting process.
  5. 5. The cover element (30) according to any one of claims 2 to 4, characterized in that the cover element (30) is made by a sand casting process.
  6. 6. The cover element (30) according to any one of claims 2 to 5, characterized in that the cover element (30) is made by an integral foam moulding process, in particular, an integral foam injection moulding process (SGI process).
  7. 7. The cover element (30) according to any one of the preceding claims, characterized in that the cover element (30) is made of cast iron.
  8. 8. The cover element (30) according to claim 3, characterized in that the cover element (30) is made of spheroidal cast iron.
  9. 9. A rotor carrier (22) for a rotor (21) of an electric machine, the rotor carrier (22) comprising at least one cover element (30) according to any one of the preceding claims.
GB1312738.6A 2013-07-17 2013-07-17 Cover element for a rotor carrier of an electric machine Withdrawn GB2516262A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1312738.6A GB2516262A (en) 2013-07-17 2013-07-17 Cover element for a rotor carrier of an electric machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1312738.6A GB2516262A (en) 2013-07-17 2013-07-17 Cover element for a rotor carrier of an electric machine

Publications (2)

Publication Number Publication Date
GB201312738D0 GB201312738D0 (en) 2013-08-28
GB2516262A true GB2516262A (en) 2015-01-21

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ID=49081371

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1312738.6A Withdrawn GB2516262A (en) 2013-07-17 2013-07-17 Cover element for a rotor carrier of an electric machine

Country Status (1)

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GB (1) GB2516262A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050206251A1 (en) * 2004-03-22 2005-09-22 Foster Michael D Electric motor/generator and method of cooling an electromechanical transmission
US20090283344A1 (en) * 2007-01-29 2009-11-19 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Drive train having a wet starting clutch for hybrid applications
EP2276151A2 (en) * 2009-07-14 2011-01-19 Hamilton Sundstrand Corporation Hybrid cascading lubrication and cooling system
US20120217825A1 (en) * 2011-02-28 2012-08-30 Aisin Aw Co., Ltd. Vehicle drive system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050206251A1 (en) * 2004-03-22 2005-09-22 Foster Michael D Electric motor/generator and method of cooling an electromechanical transmission
US20090283344A1 (en) * 2007-01-29 2009-11-19 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Drive train having a wet starting clutch for hybrid applications
EP2276151A2 (en) * 2009-07-14 2011-01-19 Hamilton Sundstrand Corporation Hybrid cascading lubrication and cooling system
US20120217825A1 (en) * 2011-02-28 2012-08-30 Aisin Aw Co., Ltd. Vehicle drive system

Also Published As

Publication number Publication date
GB201312738D0 (en) 2013-08-28

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)