An electric motor with a movable permanent magnet stator is disclosed. The electric motor includes a rotor with an armature having a plurality of windings about the armature. A plurality of stator magnets are disposed about the rotor. The plurality of stator magnets a selectively positionable between a proximal position, in close proximity to the rotor, and a distal position, away from the rotor. An actuator is coupled to the plurality of stator magnets, the actuator operable to position the plurality of stator magnets between the proximal position and the distal position. The output of the electric motor is controlled by moving the stator magnets towards and away from rotor, rather than applying varying amounts of electricity to the rotor.

An electric motor with a movable permanent magnet stator is disclosed. The electric motor includes a rotor with an armature having a plurality of windings about the armature. A plurality of stator magnets are disposed about the rotor. The plurality of stator magnets a selectively positionable between a proximal position, in close proximity to the rotor, and a distal position, away from the rotor. An actuator is coupled to the plurality of stator magnets, the actuator operable to position the plurality of stator magnets between the proximal position and the distal position. The output of the electric motor is controlled by moving the stator magnets towards and away from rotor, rather than applying varying amounts of electricity to the rotor.

An electric motor with a movable permanent magnet stator is disclosed. The electric motor includes a rotor with an armature having a plurality of windings about the armature. A plurality of stator magnets are disposed about the rotor. The plurality of stator magnets a selectively positionable between a proximal position, in close proximity to the rotor, and a distal position, away from the rotor. An actuator is coupled to the plurality of stator magnets, the actuator operable to position the plurality of stator magnets between the proximal position and the distal position. The output of the electric motor is controlled by moving the stator magnets towards and away from rotor, rather than applying varying amounts of electricity to the rotor.

An electric motor with a movable permanent magnet stator is disclosed. The electric motor includes a rotor with an armature having a plurality of windings about the armature. A plurality of stator magnets are disposed about the rotor. The plurality of stator magnets a selectively positionable between a proximal position, in close proximity to the rotor, and a distal position, away from the rotor. An actuator is coupled to the plurality of stator magnets, the actuator operable to position the plurality of stator magnets between the proximal position and the distal position. The output of the electric motor is controlled by moving the stator magnets towards and away from rotor, rather than applying varying amounts of electricity to the rotor.

A brush motor including a rotor having a core with a winding wound thereon and a commutator electrically connected to the winding, a brush configured to contact the commutator to cause a current to be supplied to the rotor, and a movable permanent magnet arranged to oppose the core with a gap therebetween and to be movable in a circumferential direction of the rotor within an angle range. The angle range includes a retarded angle position and an advanced angle position, in which the movable permanent magnet is displaced respectively in a retarded angle direction and an advanced angle direction relative to the brush, to thereby respectively cause a first torque and a second torque higher than the first torque. The movable permanent magnet is movable in the retarded or advanced angle direction within the angle range at least within a period in which a current is supplied to the rotor.

A brush motor including a rotor having a core with a winding wound thereon and a commutator electrically connected to the winding, a brush configured to contact the commutator to cause a current to be supplied to the rotor, and a movable permanent magnet arranged to oppose the core with a gap therebetween and to be movable in a circumferential direction of the rotor within an angle range. The angle range includes a retarded angle position and an advanced angle position, in which the movable permanent magnet is displaced respectively in a retarded angle direction and an advanced angle direction relative to the brush, to thereby respectively cause a first torque and a second torque higher than the first torque. The movable permanent magnet is movable in the retarded or advanced angle direction within the angle range at least within a period in which a current is supplied to the rotor.

A starter motor for starting up an engine mounted to a straddled vehicle. The starter motor includes a rotor, a brush in contact with the rotor to cause a current supplied thereto, and a movable permanent magnet arranged to oppose a core of the rotor with a gap therebetween and to be movable in a circumferential direction of the rotor within an angle range. The angle range includes a retarded angle position and an advanced angle position in which the movable permanent magnet is displaced respectively in a retarded and advanced angle direction relative to the brush. The movable permanent magnet is located in the advanced angle position when the rotor starts to rotate upon a supply of the current to the rotor, and to be moved in the retarded angle direction to the retarded angle position within a period in which the rotor is rotating with the current supplied to the rotor.

A starter motor for starting up an engine mounted to a straddled vehicle. The starter motor includes a rotor, a brush in contact with the rotor to cause a current supplied thereto, and a movable permanent magnet arranged to oppose a core of the rotor with a gap therebetween and to be movable in a circumferential direction of the rotor within an angle range. The angle range includes a retarded angle position and an advanced angle position in which the movable permanent magnet is displaced respectively in a retarded and advanced angle direction relative to the brush. The movable permanent magnet is located in the advanced angle position when the rotor starts to rotate upon a supply of the current to the rotor, and to be moved in the retarded angle direction to the retarded angle position within a period in which the rotor is rotating with the current supplied to the rotor.

A brush motor including a rotor having a core with a winding wound thereon and a commutator electrically connected to the winding, a brush configured to contact the commutator to cause a current to be supplied to the rotor, and a movable permanent magnet arranged to oppose the core with a gap therebetween and to be movable in a circumferential direction of the rotor within an angle range. The angle range includes a retarded angle position and an advanced angle position, in which the movable permanent magnet is displaced respectively in a retarded angle direction and an advanced angle direction relative to the brush, to thereby respectively cause a first torque and a second torque higher than the first torque. The movable permanent magnet is movable in the retarded or advanced angle direction within the angle range at least within a period in which a current is supplied to the rotor.

A brush motor including a rotor having a core with a winding wound thereon and a commutator electrically connected to the winding, a brush configured to contact the commutator to cause a current to be supplied to the rotor, and a movable permanent magnet arranged to oppose the core with a gap therebetween and to be movable in a circumferential direction of the rotor within an angle range. The angle range includes a retarded angle position and an advanced angle position, in which the movable permanent magnet is displaced respectively in a retarded angle direction and an advanced angle direction relative to the brush, to thereby respectively cause a first torque and a second torque higher than the first torque. The movable permanent magnet is movable in the retarded or advanced angle direction within the angle range at least within a period in which a current is supplied to the rotor.