GB2425290A - Bogie comprising flywheel and prime mover - Google Patents

Bogie comprising flywheel and prime mover Download PDF

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Publication number
GB2425290A
GB2425290A GB0508150A GB0508150A GB2425290A GB 2425290 A GB2425290 A GB 2425290A GB 0508150 A GB0508150 A GB 0508150A GB 0508150 A GB0508150 A GB 0508150A GB 2425290 A GB2425290 A GB 2425290A
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GB
United Kingdom
Prior art keywords
bogie
speed
converter
energy
flywheel
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.)
Granted
Application number
GB0508150A
Other versions
GB2425290B (en
GB0508150D0 (en
Inventor
John Pierce Martin Parry
Paul Davis
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JPM Parry and Associates Ltd
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JPM Parry and Associates Ltd
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 JPM Parry and Associates Ltd filed Critical JPM Parry and Associates Ltd
Priority to GB0508150A priority Critical patent/GB2425290B/en
Publication of GB0508150D0 publication Critical patent/GB0508150D0/en
Publication of GB2425290A publication Critical patent/GB2425290A/en
Application granted granted Critical
Publication of GB2425290B publication Critical patent/GB2425290B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/30—Electric propulsion with power supplied within the vehicle using propulsion power stored mechanically, e.g. in fly-wheels
    • 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
    • B60K6/10—Prime-movers comprising combustion engines and mechanical or fluid energy storing means by means of a chargeable mechanical accumulator, e.g. flywheel
    • B60K6/105—Prime-movers comprising combustion engines and mechanical or fluid energy storing means by means of a chargeable mechanical accumulator, e.g. flywheel the accumulator being a flywheel
    • B60L11/16—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • B61C7/00—Other locomotives or motor railcars characterised by the type of motive power plant used; Locomotives or motor railcars with two or more different kinds or types of motive power
    • B61C7/04—Locomotives or motor railcars with two or more different kinds or types of engines, e.g. steam and IC engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • B61C9/00—Locomotives or motor railcars characterised by the type of transmission system used; Transmission systems specially adapted for locomotives or motor railcars
    • B61C9/38—Transmission systems in or for locomotives or motor railcars with electric motor propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D43/00—Devices for using the energy of the movements of the vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F3/00—Types of bogies
    • B61F3/02—Types of bogies with more than one axle
    • B61F3/04—Types of bogies with more than one axle with driven axles or wheels
    • 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
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/10—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of fluid gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/26—Rail vehicles
    • 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
    • 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
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance

Abstract

A bogie 10 is driven by a drive system. The bogie comprises a chassis 12, within which the drive system is mounted. The drive system comprises a flywheel, drive means to transmit power from the flywheel to one or more wheels 18 and a prime mover 24 operable to rotate the flywheel, which is typically located in a housing 26. The bogie 10 is typically for railway use. The drive means may comprise a reduction gearbox 30, bevel gearboxes 28, 54, 56, hydrostatic converters 40, 46, 48 and output shafts coupled to axles 14,16. The prime mover 24 may be an electric motor or an internal combustion engine.

Description

Title: Bogie DescriDtion of Invention The present invention relates to a
bogie for use in rail transport vehicles such as trains and trams, and to vehicles incorporating such bogies.
Conventional rail transport systems such as train and tram systems comprise carriages or cars usually mounted on one or more bogies. Some at least of the bogies may be powered, and/or a locomotive may be provided at one or each end of the train or tram. The drive system necessary to power each bogie is usually bulky, and can cause problems with its accommodation.
In accordance with a first aspect of the present invention, there is provided a bogie which is driven by a drive system, the bogie comprising a chassis, the drive system comprising a flywheel, drive means to transmit energy from the flywheel to one or more axles of the bogie, and a prime mover operable to cause rotational motion of the flywheel, wherein the drive system is mounted within the chassis.
The provision of a flywheel in the drive system allows a smaller prime mover than is conventional to be used. This leads to a reduction in the overall size of the drive system, to the extent that the entire drive system may be mounted within the chassis of the bogie. The use of a flywheel in combination with a prime mover also allows for greater acceleration than a prime mover alone.
The prime mover may comprise an internal combustion engine. This may use any fuel suitable for such an engine, for example diesel, petrol, LPG, LNG, hydrogen, etc. Alternatively, the prime mover may comprise an electric motor. The electric motor may be powered by a source of electricity. The source of electricity may be carried on the bogie. The source of electricity may be carried on a vehicle attached to the bogie. The source of electricity may be at least one fuel cell. The source of electricity may comprise a number of electricity supply units disposed along a track along which the bogie travels. The electric motor may receive electricity from one or more of the electricity supply units. The electric motor may receive the electricity by contact with the one or more electricity supply units. The electric motor may receive the electricity by induction from the one or more electricity supply units.
The drive means may comprise a first converter. The first converter may be coupled to the flywheel. The drive means may comprise a second converter.
The second converter may be coupled to the first converter. The second converter may be coupled to an axle mounted on the bogie carrying a pair of wheels. The first converter may operate to convert rotational motion of the flywheel to a transmissible form of energy. The second converter may operate to receive energy from the first converter, and to convert the energy into mechanical motion which is applied to the axle. The drive means may comprise a third converter. The third converter may be coupled to the first converter. The third converter may be coupled to a second axle mounted on the bogie carrying a pair of wheels. The first converter may operate to convert rotational motion of the flywheel to a transmissible form of energy.
The third converter may operate to receive energy from the first converter, and to convert the energy into mechanical motion which is applied to the second axle. The drive means may comprise at least one further converter.
The further converter may be coupled to the first converter. The further converter may be coupled to a further axle mounted on the bogie carrying a pair of wheels. The first converter may operate to convert rotational motion of the flywheel to a transmissible form of energy. The further converter may operate to receive energy from the first converter, and to convert the energy into mechanical motion which is applied to the further axle.
The second converter may operate to convert mechanical motion of the axle to a transmissible form of energy. The first converter may operate to receive energy from the second converter and to convert the energy to rotational motion of the flywheel. The third converter may operate to convert mechanical motion of the second axle to a transmissible form of energy. The first converter may operate to receive energy from the third converter, and to convert the energy to rotational motion of the flywheel. The further converter may operate to convert mechanical motion of the further axle to a transmissible form of energy. The first converter may operate to receive energy from the further converter, and to convert the energy to rotational motion of the flywheel. The second converter and/or third converter and/or further converter may operate to convert mechanical motion of the axle to which it is coupled to a transmissible form of energy, whilst the speed of the bogie is being decreased, e.g. whilst the bogie is being brought to a stop.
Energy released from the axles when decreasing the speed of the bogie can therefore be used to "recharge" the flywheel. Thus the drive system of the bogie is more energy-efficient than conventional rail transport vehicles.
The or each or some of the converters may be a hydrostatic converter. The or each or some of the hydrostatic converters may be a variable displacement hydrostatic converter.
The drive system may comprise a control system. The control system may be operative to control the functioning of the drive system, and thereby the bogie.
The control system may comprise at least one sensor to measure the rotational speed of the flywheel. The control system may comprise at least one actuator to control the operation of the flywheel. The control system may comprise at least one sensor to measure the speed of the bogie.
The control system may comprise speed control means to control the speed of the bogie. The speed control means may control the speed of the bogie by controlling the operation of at least one of the converters of the drive means.
The speed control means may control the operation of at least one of the converters to increase the mechanical motion applied to at least one axle, when it is desired to increase the speed of the bogie. The speed control means may control the operation of at least one of the converters to break off application of the mechanical motion to at least one axle, when it is desired to decrease the speed of the bogie. In addition, the speed control means may control the operation of the first converter to receive energy from the converter coupled to the at least one axle, and to convert the energy to rotational motion of the flywheel.
The control system may comprise speed selection and control means to select a desired speed of the bogie and to control the operation of the bogie to obtain the desired speed. The speed selection and control means may receive measurements of the speed of the bogie from the at least one bogie speed sensor, and control the operation of the bogie according to the measured speed of the bogie and to the desired speed of the bogie. The speed selection and control means may obtain the desired speed of the bogie by controlling the operation of at least one of the converters of the drive means. The speed selection and control means may control the operation of at least one of the converters to increase the mechanical motion applied to at least one axle, when the desired speed of the bogie is greater than the measured speed of the bogie. The speed selection and control means may control the operation of at least one of the converters to break off application of the mechanical motion to at least one axle, when the desired speed of the bogie is less than the measured speed of the bogie. In addition, the speed selection and control means may control the operation of the first converter to receive energy from the converter coupled to the at least one axle, and to convert the energy to rotational motion of the flywheel.
The control means may be operative to sense the speed of rotation of the flywheel, and to determine whether or not it is necessary for energy to be drawn from the prime mover and applied to the flywheel. The control means may control application of energy to the flywheel using the flywheel actuator.
In accordance with a second aspect of the present invention, there is provided a rail transport vehicle having at least one carriage attached to at least one bogie in accordance with the first aspect of the invention.
The bogie may further comprise any of the features of the preceding paragraphs.
The rail transport vehicle may have a control system connected to the control system of the bogie to enable a driver to control the operation of the vehicle andthebogie.
Specific and non-limiting embodiments of the invention will now be described, by way of example only, with reference to the accompanying drawing, in which Figure 1 shows a schematic perspective view of a bogie in accordance with the present invention.
In Figure 1 a bogie is shown generally at 10, having a chassis 12 on which front and rear axles 14, 16 are mounted, each axle 14, 16 carrying a pair of rail-engaging wheels 18. A frame 20 is mounted on the chassis 12 and supports a pivot 22 which is operative to attach the bogie 10 to a vehicle, such as a train carriage, tram car or the like. Although the pivot 22 is shown as being mounted in a generally central position on the bogie 10, it may equally be positioned at an end of the bogie 10, or at any other position.
Mounted within the chassis 12 of the bogie 10 is a drive system comprising a flywheel, drive means to transmit energy from the flywheel to one or more wheels of the bogie, and a prime mover which is operable to cause rotational motion of the flywheel.
The prime mover is a DC electric motor 24, and is mounted at one end of the bogie 10. The prime mover 24 is powered by a bank of fuel cells (not shown) carried either on the bogie 10 itself or on the vehicle attached to the bogie 10.
The flywheel is mounted within a flywheel housing 26, which is located generally centrally of the bogie 10. The flywheel is mounted within the housing 26 for rotation on a vertical axis. The flywheel has a rotor comprising a stack of individually-balanced laser cut discs of steel or equivalent high density, high tensile materials, pressed together with a thin layer of industrial adhesive between the plates. The rotor has no centre-hole but is mounted between two high tensile steel flanges with stub shafts, with the whole assembly joined by a ring of bolts which pass through holes in the rotor flanges.
A bevel gearbox 28 is positioned adjacent the flywheel housing 26, and is coupled to one of the stub shafts of the flywheel. An output shaft of the prime mover 24 is coupled to a reduction gearbox 30 positioned adjacent the prime mover 24, with an output shaft 32 of the reduction gearbox being coupled, via a fluid coupling 34, to an input shaft 36 of the bevel gearbox 28. Thus, when the prime mover 24 is operated, the flywheel is caused to rotate, with the rotating flywheel being used to store energy.
The drive means of the drive system comprises the bevel gearbox 28, a first hydrostatic converter 40, a second hydrostatic converter 46, a third hydrostatic converter 48 and bevel gearboxes 54, 56. An output shaft 38 of the bevel gearbox 28 is coupled to the first hydrostatic converter 40, which is connected by fluid lines 42, 44 to the second and third hydrostatic converters 46, 48. The hydrostatic converters 46, 48 have output shafts 50, 52 which are coupled to the bevel gearboxes 54, 56, whose output shafts are coupled to the axles 14, 16.
The drive means operates in two modes. In the first mode, rotational motion of the flywheel is applied to the first converter 40 via the gearbox 28. The first converter 40 converts this motion to a transmissible form of energy, in the form of increased fluid pressure. The second converter 46 receives energy from the first converter 40, and converts this energy to rotational motion, and applies this motion to the axle 14 via the gearbox 54. Similarly, the third converter 48 receives energy from the first converter 40, and converts this energy to rotational motion, and applies the motion to the axle 16 via the gearbox 56. Thus the wheels 18 of the bogie 10 are caused to rotate. In the second mode, rotational motion of the axles 14, 16 is applied to the second and third converters 46, 48 via the gearboxes 54, 56 respectively. The second and third converters 46, 48 each convert the motion into a transmissible form of energy, in the form of increased fluid pressure. The first converter 40 receives energy from each of the second and third converters 46, 48, and converts this energy into rotational motion. This motion is then applied to the flywheel via the gearbox 28.
The bogie 10 is described as operative in a "four wheel drive" mode, with each axle 14, 16 being driven, It will be understood that the bogie 10 will also be operable in a "two wheel drive" mode, in which only one of the axles 14, 16 is driven.
The drive system of the bogie 10 also comprises a control system (not shown). The control system comprises sensors to measure the rotational speed of the flywheel and to measure the speed of the bogie 10. The control system further comprises an actuator to control operation of the flywheel.
The control system of the bogie 10 is connected to a control system of the vehicle attached to the bogie. The driver of the vehicle operates the vehicle control system and the bogie control system to control operation of the vehicle and bogie.
The control system is operative to control the functioning of the drive system, and therefore operation of the bogie 10. The control system comprises speed control means to control the speed of the bogie. The speed control means controls the speed of the bogie by controlling the operation of the first, second and third converters 40, 46, 48 of the drive means. The speed control means controls the operation of the converters to increase the mechanical motion applied to the axles 14, 16, when it is desired to increase the speed of the bogie. The speed control means controls the operation of the converters to break off application of the mechanical motion to the axles 14, 16, when it is desired to decrease the speed of the bogie. In addition, the speed control means controls the operation of the first converter to receive energy from the second and third converters, and to convert the energy into rotational motion of the flywheel. This increases the speed of rotation of the flywheel, and hence the energy stored by the flywheel.
The control means is operative to sense the speed of rotation of the flywheel, and to determine whether or not it is necessary for energy to be drawn from the prime mover and applied to the flywheel. The control means controls application of energy to the flywheel using the flywheel actuator. Such application of energy may be necessary, for example, due to energy losses incurred by the bogie during normal operation thereof, including frictional losses.
In use, the bogie 10 and the vehicle attached thereto travels along tracks following a predetermined route. Typically, the route will start at a depot where the bogie and vehicle are housed when not in use. Before starting the route, the flywheel of the bogie 10 is "charged up" causing it to accelerate to its normal rotational speed. This is accomplished by applying energy thereto from the prime mover 24, using energy either from the on-board fuel cells, or, more preferably, from a power source located at the depot, so as not to drain the on-board cells.
To set the vehicle in motion, the driver of the vehicle uses the vehicle and bogie control systems to control the speed of the bogie, specifically to increase the speed of the bogie. The speed control means of the bogie control system increases the speed of the bogie by controlling the operation of the first, second and third converters 40, 46, 48 of the drive means to increase the mechanical motion applied to the axles 14, 16, so that the speed of the bogie is increased. When it is desired to decrease the speed of the bogie, the speed control means controls the operation of the converters 40, 46, 48 to break off application of the mechanical motion to the axles 14, 16.
The axles 14, 16 continue to rotate, and their rotational motion is applied to the second and third converters 46, 48. These convert the motion to a transmissible form of energy. The first converter 40 receives the energy, and converts it to rotational motion, and applies this motion to the flywheel. This increases the rotational speed of the flywheel, and in this way the flywheel is "recharged" as the bogie decelerates. The length of time over which the speed control means controls the operation of the converters 40, 46, 48 to break off application of the mechanical motion to the axles 14, 16, will determine the amount of the decrease in the speed of the bogie, e.g. to a fraction of its original speed or to zero. Generally conventional disc brakes (not shown) are used to bring the bogie to a complete stop in an emergency, and to hold the bogie stationary.
Throughout use of the bogie and vehicle, the control means is operative to sense the speed of rotation of the flywheel, and to determine whether or not it is necessary for energy to be drawn from the prime mover and applied to the flywheel. The control means controls application of energy to the flywheel using the flywheel actuator when this necessary.
The use of a flywheel as an energy store reduces the need for motive power from the prime mover 24, and thus a smaller prime mover 24 than is conventional can be used. This in turn allows the entire drive system, comprising the prime mover 24, the flywheel, the converters 40, 46, 48 and the associated coupling components, to be mounted within the chassis 12 of the bogie 10. A further advantage of this system is that the energy stored in the flywheel can be used to accelerate the bogie 10, and hence the vehicle to which it is attached, at a higher rate than would be possible if the wheels 18 were driven solely by the prime mover 24. Furthermore, the bogie 10 is more energy-efficient than conventional rail transport vehicles, as energy released in slowing the bogie is used to "recharge" the flywheel.
Although the use of the bogie 10 of the present invention has been described in relation to vehicles such as railway carriages and tram cars, it could equally be used in a locomotive, with the locomotive being used to pull generally conventional carriages, tram cars or the like.
When used in this specification and claims, the terms "comprises" and "comprising" and variations thereof mean that the specified features, steps or integers are included. The terms are not to be interpreted to exclude the presence of other features, steps or components.
The features disclosed in the foregoing description, or the following claims, or the accompanying drawings, expressed in their specific forms or in terms of a means for performing the disclosed function, or a method or process for attaining the disclosed result, as appropriate, may, separately, or in any combination of such features, be utilised for realising the invention in diverse forms thereof.

Claims (30)

  1. CLAIMS: 1. A bogie which is driven by a drive system, the bogie comprising
    a chassis, the drive system comprising a flywheel, drive means to transmit energy from the flywheel to one or more axles of the bogie, and a prime mover operable to cause rotational motion of the flywheel, wherein the drive system is mounted within the chassis.
  2. 2. A bogie according to claim 1 in which the prime mover comprises an internal combustion engine.
  3. 3. A bogie according to claim I in which the prime mover comprises an electric motor.
  4. 4. A bogie according to any preceding claim in which the drive means comprises a first converter, coupled to the flywheel, and a second converter coupled to the first converter and coupled to an axle mounted on the bogie carrying a pair of wheels.
  5. 5. A bogie according to claim 4 in which the first converter operates to convert rotational motion of the flywheel to a transmissible form of energy, and the second converter operates to receive energy from the first converter and to convert the energy into mechanical motion which is applied to the axle.
  6. 6. A bogie according to any preceding claim in which the drive means comprises a third converter coupled to the first converter and coupled to a second axle mounted on the bogie carrying a pair of wheels.
  7. 7. A bogie according to claim 6 in which the first converter operates to convert rotational motion of the flywheel to a transmissible form of energy, and the third converter operates to receive energy from the first converter and to convert the energy into mechanical motion which is applied to the second axle.
  8. 8. A bogie according to any preceding claim in which the drive means comprises at least one further converter coupled to the first converter and coupled to a further axle mounted on the bogie carrying a pair of wheels.
  9. 9. A bogie according to claim 8 in which the first converter operates to convert rotational motion of the flywheel to a transmissible form of energy, and the further converter operates to receive energy from the first converter and to convert the energy into mechanical motion which is applied to the further axle.
  10. 10. A bogie according to claim 4 or claim 5 in which the second converter operates to convert mechanical motion of the axle to a transmissible form of energy, and the first converter operates to receive energy from the second converter and to convert the energy to rotational motion of the flywheel.
  11. 11. A bogie according to claim 6 or claim 7 in which the third converter operates to convert mechanical motion of the second axle to a transmissible form of energy, and the first converter operates to receive energy from the third converter, and to convert the energy to rotational motion of the flywheel.
  12. 12. A bogie according to claim 8 or claim 9 in which the further converter operates to convert mechanical motion of the further axle to a transmissible form of energy, and the first converter operates to receive energy from the further converter, and to convert the energy to rotational motion of the flywheel.
  13. 13. A bogie according to any of claims 10 to 12 in which the second converter and/or the third converter and/or the further converter operates to convert mechanical motion of the axle to which it is coupled to a transmissible form of energy, whilst the speed of the bogie is being decreased.
  14. 14. A bogie according to any of claims 4 to 13 in which the or each or some of the converters is a hydrostatic converter.
  15. 15. A bogie according to any preceding claim in which the drive system comprises a control system.
  16. 16. A bogie according to claim 15 in which the control system comprises at least one sensor to measure the rotational speed of the flywheel, at least one actuator to control the operation of the flywheel, and at least one sensor to measure the speed of the bogie.
  17. 17. A bogie according to claim 15 or claim 16 in which the control system comprises speed control means to control the speed of the bogie.
  18. 18. A bogie according to claim 17, as dependent from any of claims 4 to 14, in which the speed control means controls the speed of the bogie by controlling the operation of at least one of the converters of the drive means.
  19. 19. A bogie according to claim 18 in which the speed control means controls the operation of at least one of the converters to increase the mechanical motion applied to at least one axle, when it is desired to increase the speed of the bogie.
  20. 20. A bogie according to claim 18 or claim 19 in which the speed control means controls the operation of at least one of the converters to break off application of the mechanical motion to at least one axle, when it is desired to decrease the speed of the bogie.
  21. 21. A bogie according to any of claims 15 to 20 in which the control system comprises speed selection and control means to select a desired speed of the bogie and to control the operation of the bogie to obtain the desired speed.
  22. 22. A bogie according to claim 21, as dependent from claim 16, in which the speed selection and control means receives measurements of the speed of the bogie from the at least one bogie speed sensor, and controls the operation of the bogie according to the measured speed of the bogie and to the desired speed of the bogie.
  23. 23. A bogie according to claim 21 or claim 22, as dependent from any of claims 4 to 14, in which the speed selection and control means obtains the desired speed of the bogie by controlling the operation of at least one of the converters of the drive means.
  24. 24. A bogie according to claim 23 in which the speed selection and control means controls the operation of at least one of the converters to increase the mechanical motion applied to at least one axle, when the desired speed of the bogie is greater than the measured speed of the bogie.
  25. 25. A bogie according to claim 23 or claim 24 in which the speed selection and control means controls the operation of at least one of the converters to break off application of the mechanical motion to at least one axle, when the desired speed of the bogie is less than the measured speed of the bogie.
  26. 26. A bogie according to any of claims 15 to 25 in which the control means is operative to sense the speed of rotation of the flywheel, and to determine whether or not it is necessary for energy to be drawn from the prime mover and applied to the flywheel.
  27. 27. A rail transport vehicle having at least one carriage attached to at least one bogie in accordance with any or claims 1 to 26.
  28. 28. A bogie constructed and arranged substantially as hereinbefore described with reference to the accompanying drawing.
  29. 29. A rail transport vehicle constructed and arranged substantially as hereinbefore described with reference to the accompanying drawing.
  30. 30. Any novel feature or combination of features hereinbefore described and/or as shown in the accompanying drawing.
GB0508150A 2005-04-22 2005-04-22 Bogie Expired - Fee Related GB2425290B (en)

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EP2314493A1 (en) * 2009-10-20 2011-04-27 ZF Friedrichshafen AG Rail vehicle hybrid drive
WO2015086667A1 (en) * 2013-12-13 2015-06-18 Siemens Aktiengesellschaft Assembly having an undercarriage unit
WO2016157146A1 (en) 2015-04-02 2016-10-06 Transnet Soc Limited Regenerative railway braking system
CN106609821A (en) * 2015-10-23 2017-05-03 熵零股份有限公司 Rotating mechanism energy recovery system
CN106704534A (en) * 2015-11-16 2017-05-24 熵零股份有限公司 Energy adjustment method and system
CN106704536A (en) * 2015-11-16 2017-05-24 熵零股份有限公司 Power system
CN107023633A (en) * 2016-02-01 2017-08-08 熵零控股股份有限公司 A kind of energy adjustment system
CN107023635A (en) * 2016-02-01 2017-08-08 熵零控股股份有限公司 A kind of dynamical system
CN107023632A (en) * 2016-02-01 2017-08-08 熵零控股股份有限公司 A kind of energy adjustment system
CN107023627A (en) * 2016-02-01 2017-08-08 熵零控股股份有限公司 A kind of dynamical system
CN107023622A (en) * 2016-02-01 2017-08-08 熵零控股股份有限公司 A kind of energy adjustment system
CN107020948A (en) * 2016-02-01 2017-08-08 熵零控股股份有限公司 A kind of dynamical system
CN107023628A (en) * 2016-02-01 2017-08-08 熵零控股股份有限公司 A kind of dynamical system
CN107023629A (en) * 2016-02-01 2017-08-08 熵零控股股份有限公司 A kind of energy adjustment system
US20180264951A1 (en) * 2015-09-28 2018-09-20 Carrier Corporation A vehicle comprising a wheel driven generator for charging a battery

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CN106704520A (en) * 2015-11-17 2017-05-24 熵零股份有限公司 Energy adjusting method
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Cited By (23)

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Publication number Priority date Publication date Assignee Title
EP2314493A1 (en) * 2009-10-20 2011-04-27 ZF Friedrichshafen AG Rail vehicle hybrid drive
WO2015086667A1 (en) * 2013-12-13 2015-06-18 Siemens Aktiengesellschaft Assembly having an undercarriage unit
US10093326B2 (en) 2013-12-13 2018-10-09 Siemens Aktiengesellschaft Assembly having an undercarriage unit
EP3750766A1 (en) * 2013-12-13 2020-12-16 Siemens Mobility GmbH Assembly with a running gear unit
CN107683228B (en) * 2015-04-02 2020-02-07 南非国营运输公司 Regenerative railway braking system
AU2016242115B2 (en) * 2015-04-02 2021-05-27 Transnet Soc Limited Regenerative railway braking system
US10843715B2 (en) 2015-04-02 2020-11-24 Transnet Soc Limited Regenerative railway braking system
CN107683228A (en) * 2015-04-02 2018-02-09 南非国营运输公司 Regenerate railway brake system
WO2016157146A1 (en) 2015-04-02 2016-10-06 Transnet Soc Limited Regenerative railway braking system
US20180086355A1 (en) * 2015-04-02 2018-03-29 Transnet Soc Limited Regenerative railway braking system
US11021066B2 (en) * 2015-09-28 2021-06-01 Carrier Corporation Vehicle comprising a wheel driven generator for charging a battery
US20180264951A1 (en) * 2015-09-28 2018-09-20 Carrier Corporation A vehicle comprising a wheel driven generator for charging a battery
CN106609821A (en) * 2015-10-23 2017-05-03 熵零股份有限公司 Rotating mechanism energy recovery system
CN106704536A (en) * 2015-11-16 2017-05-24 熵零股份有限公司 Power system
CN106704534A (en) * 2015-11-16 2017-05-24 熵零股份有限公司 Energy adjustment method and system
CN107023629A (en) * 2016-02-01 2017-08-08 熵零控股股份有限公司 A kind of energy adjustment system
CN107023628A (en) * 2016-02-01 2017-08-08 熵零控股股份有限公司 A kind of dynamical system
CN107020948A (en) * 2016-02-01 2017-08-08 熵零控股股份有限公司 A kind of dynamical system
CN107023622A (en) * 2016-02-01 2017-08-08 熵零控股股份有限公司 A kind of energy adjustment system
CN107023627A (en) * 2016-02-01 2017-08-08 熵零控股股份有限公司 A kind of dynamical system
CN107023632A (en) * 2016-02-01 2017-08-08 熵零控股股份有限公司 A kind of energy adjustment system
CN107023635A (en) * 2016-02-01 2017-08-08 熵零控股股份有限公司 A kind of dynamical system
CN107023633A (en) * 2016-02-01 2017-08-08 熵零控股股份有限公司 A kind of energy adjustment system

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GB0508150D0 (en) 2005-06-01

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