Classifications

• • 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
  • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
  • H02K7/1807—Rotary generators
  • H02K7/1815—Rotary generators structurally associated with reciprocating piston engines
• • 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
  • H02K1/27—Rotor cores with permanent magnets
  • H02K1/2786—Outer rotors
  • H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
  • H02K1/2789—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
  • H02K1/2791—Surface mounted magnets; Inset magnets
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
  • F02P1/00—Installations having electric ignition energy generated by magneto- or dynamo- electric generators without subsequent storage
  • F02P1/02—Installations having electric ignition energy generated by magneto- or dynamo- electric generators without subsequent storage the generator rotor being characterised by forming part of the engine flywheel
• • 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
  • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
  • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
  • H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
  • H02K21/222—Flywheel magnetos
• • 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
  • H02K7/02—Additional mass for increasing inertia, e.g. flywheels
• • 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
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
  • Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids

Definitions

• the invention concerns an ignition- and generator system that includes a flywheel of non-magnetic or low-magnetic material, which flywheel has at least one permanent magnet at its inner circumference.
• the flywheel surrounds a stator with its windings.
• the power requirements for the vehicle are directly generated by a flywheel- and generator system.
• the stator of the generator is mounted on the inner surface of the flywheel and permanent magnets are arranged in the flywheel. A change in magnetic flux is created when the flywheel is set in motion, whereby an electrical voltage is produced in the windings of the stator.
• Such a device is usually in the form of what is known as a counter ring, measurement ring or measurement wheel.
• Both a feedback ring and a counter ring are often used on flywheels manufactured from non-magnetic or "low-magnetic” material.
• the expression "low-magnetic material” is used here to denote a material in which it is both desirable and possible to reinforce the magnetic field that is produced by permanent magnets that are mounted in the vicinity of the flywheel.
• the counter ring and the feedback ring have up until now been two distinct and separate components.
• the feedback ring has been placed, fixed for example by a glued connection, or arranged directly in association with casting of the flywheel, somewhere on the inner surface of the wheel.
• the counter ring which must be implemented with precision, has been mounted in a precision-turned groove, for example using shrink- and pinned connections, to the outer surface of the wheel. This method of mounting is expensive to carry out since two separate components, each with relatively high requirements for precision must first be manufactured, and then the components must each be mounted with precision.
• the mounting of the counter ring onto the flywheel in particular, requires high precision.
• the present invention comprises a system for alleviating the disadvantages of known ignition- and/or generator systems.
• the advantages of the system are thus a safe and durable ignition- and generator system that is simpler and cheaper to produce, and that is characterised in that an integral part of magnetic material is arranged on the flywheel that includes a combined feedback ring and counter ring.
• the flywheel is preferably constructed from aluminium. Zinc, titanium or magnesium comprise alternative materials.
• the teeth, cogs or similar of the counter ring, which are located on the outer surface of the flywheel, are uncovered after the casting. It is an advantage, however, to preserve an aluminium layer over the cogs of the counter ring, in order to protect from corrosion.
• the capacity of the flywheel can be adjusted by varying the height of the cogs of the counter ring.
• the durability of the finished flywheel is higher than in the case where the counter ring is mounted separately, since the counter ring is embedded of the flywheel and is thus a part of it, - it is possible to achieve total protection from corrosion by preserving a thin layer of aluminium on the outer diameter of the flywheel, outside of the cogs of the counter ring,
• the flywheel weight of the flywheel can be easily adjusted and adapted by varying the height of the cogs of the counter ring,
• Figure 1 shows a view in perspective of a section through a flywheel.
• Figure 1 shows a cross-section of a flywheel 1.
• the flywheel is made out of a non-magnetic material, preferably aluminium.
• the use of other materials, such as zinc, titanium, magnesium or other suitable non-magnetic metals, alloys or plastics is, of course, possible.
• the flywheel is shaped as a disc 2 with a hole 3 for an engine shaft.
• the circumference of the disc has an axially placed edge 4 whose inner surface is essentially axial and whose outer surface is essentially axial.
• the counter ring 7 has cogs, measuring tips or teeth that face the outer surface of the flywheel.
• the integrated part 5 is cast simultaneously with the casting of the flywheel. Other methods of production are also possible.
• the cogs of the counter ring are uncovered after casting by processing of the outer diameter of the flywheel.
• a thin layer of aluminium can be preserved over the cogs.
• Certain types of sensor, such as a Hall sensor, can detect the cogs of the counter ring even through a thin aluminium layer.
• One or more permanent magnets are mounted in a suitable manner, for example in the shape of a ring, on the inner surface of the feedback ring 6 of the integrated part.
• the weight of the flywheel can be adjusted in a simple manner by varying the height of the cogs of the counter ring 7.
• the cogs of the counter ring 7 have a rectangular shape in the embodiment that is shown, but it is clear that they can have another suitable shape.
• the cogs can lie flush with the outer diameter of the flywheel or the can protrude beyond the outer diameter of the flywheel.
• the integrated part 6 can also include a starting ring with protruding cogs for engagement with a start motor.
• the invention is intended for use in an engine.

Landscapes

• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Permanent Magnet Type Synchronous Machine (AREA)
• Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20416104

Family Applications (1)

Country Status (4)

Cited By (5)

Citations (3)

• 1999
  • 1999-06-16 SE SE9902272A patent/SE521564C2/sv not_active IP Right Cessation
• 2000
  • 2000-06-14 WO PCT/SE2000/001232 patent/WO2000077390A1/en not_active Application Discontinuation
  • 2000-06-14 EP EP00944516A patent/EP1185789A1/en not_active Withdrawn
  • 2000-06-14 AU AU58604/00A patent/AU5860400A/en not_active Abandoned

Patent Citations (3)

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