A new type of flywheel is designed to use the brake effect of a vehicle to subsequent start and accelleration. The best existing flywheels for busses have rim and hub made of fiber reinforced composite with an adhesive joint to a steel shaft with a relative little diameter. Hub and adhesive are influenced by big forces among others from gyro moments. The stress situation is complicated, and it has been necessary to have 4 hubs and totally 8 adhesive joints. The new flywheel has no hub but transmit these forces simple and directly as shear, tension and compression to a supporting structure of light metal. There is only one adhesive joint placed at a rather big diameter, where the shear stresses are small as they are reduced with a factor 0.16. This design is much stronger than a hub for all actual forces, and therefore the wheel can run with higher revolutions. As the mass distribution is also better, it means that the wheel with unaltered weight and volume can store about 100% more energy and give 200% bigger effect. In case of a traffic accident the new wheel can stand 100 g in all directions.
Flywheel for Vehicles
1989
55 pages
Report
Keine Angabe
Englisch
Road Transportation , Miscellaneous Energy Conversion & Storage , Flywheel Energy Storage , Flywheels , Adhesion , Carbon Fibers , Composite Materials , Design , Efficiency , Joints , Performance , Reinforced Plastics , Vehicles , Foreign technology , Electric-powered vehicles , ERDA/250500 , ERDA/330500
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