Electric inertia-type starter device for a heat engine
AssigneeAciers et Outillage Peugeot
InventorRene Pouget
Life of this patent
Estimating the term…
Abstract
The device comprises an electric motor having a planar airgap the rotor of which constitutes a flywheel capable of being coupled frictionally with a plate rigid with the shaft of the heat engine to be started. For this purpose, the motor is axially movably mounted in a case between an uncoupled position to which it is biased by a spring and a position in which it is coupled with the plate. The motor is brought to the latter position by the excitation of a clutch coil carried by the rotor and exerting a force of attraction between the rotor and the plate in opposition to the action of the spring. Owing to its small axial overall size, this device requires only a low electric power and may be adapted to mopeds.
Claims13
An electric inertia-type starter device for a heat engine, comprising an electric motor including a stator and a rotor which define therebetween a planar airgap, said rotor having a high mechanical inertia and acting as a flywheel, a member for connection to the driving shaft of the heat engine, and releasable clutch means for temporarily coupling the rotor to said member, said rotor having an outside diameter substantially equal to the outside diameter of said member.
An electric inertia-type starter device for a heat engine, comprising an electric motor including a stator and a rotor which define therebetween a planar airgap, the rotor having a high mechanical inertia and acting as a flywheel, a member for connection to the driving shaft of the heat engine, and releasable clutch means for temporarily coupling the rotor to said member, the rotor and the stator of the electric motor being connected to move together between a coupled position and a uncoupled position of the rotor relative to said member, elastically yieldable means for biasing the stator to said uncoupled position, and a thrust ball bearing disposed between the rotor and the stator for maintaining the value of the airgap constant, the stator of the electric motor being of the type having permanent magnets and the rotor being an armature comprising a magnetic circuit producing a force of attraction between the magnets and the magnetic circuit, said force of attraction and a force exerted by the clutch means between the rotor and said member being adapted to each overcome the biasing force exerted by said elastically yieldable means.
An electric inertia-type starter device for a heat engine, comprising an electric motor including a stator and a rotor which define therebetween a planar airgap, the rotor having a high mechanical inertia and acting as a flywheel, a member for connection to the driving shaft of the heat engine, releasable clutch means for temporarily coupling the rotor to said member, at least one electric clutch coil carried by a face of the rotor, a shaft on which the rotor is mounted to rotate with the shaft, an electric supply having two terminals, the rotor being at least partly magnetizable, and said member being at least partly magnetizable and having a face in confronting relation to the face of the rotor carrying the clutch coil, a first circuit comprising a rotatable contact connecting one of said terminals to said shaft on which the rotor is mounted, a brush mounted in the stator and connected to the other of said terminals, and a ring connected to rotate with the rotor and connected to one end of the clutch coil, another end of the clutch coil being connected to the shaft on which the rotor is mounted.
An electric inertia-type starter device for a heat engine, comprising an electric motor including a stator and a rotor which define therebetween a planar airgap, said rotor having a high mechanical inertia and acting as a flywheel, a member for connection to the driving shaft of the heat engine, and releasable clutch means for temporarily coupling the rotor to said member, said rotor having an outside diameter substantially equal to the outside diameter of said member, said rotor being substantially disc-shaped and defining at one axial end thereof a first surface which defines said airgap with said stator, and defining at an axially opposite end thereof a second surface for engaging said member when said rotor is coupled with said member by said releasable clutch means.
Dependencies are inferred from the claim text.