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U.S. Department of Energy
Office of Scientific and Technical Information

Hybrid power system for driving a motor vehicle

Patent ·
OSTI ID:5543305
A hybrid power system is described for driving a motor vehicle comprising: electric storage battery means; an electric motor/generator; means for connecting the battery means to the motor/generator for driving the motor/generator from the battery means or for charging the battery means from the motor/generator; flywheel means for accumulating, storing and discharging kinetic energy; a variable drive transmission; means connecting the electric motor/generator and the flywheel means to the drive transmission. The electric motor/generator and flywheel connecting means are selectively operable to drive the transmission from the motor/generator and flywheel means in combination. The drive transmission is operable to apply a braking load that develops braking energy which is transmitted by the transmission means to the electric motor/generator and flywheel connecting means being operable to transmit the braking energy to the motor/generator to charge the battery means and to the flywheel means, for accumulating kinetic energy in the flywheel means; and speed regulating means operable to maintain a substantially constant rotational input speed to the electric motor/generator and flywheel connecting means from the flywheel means in response to variations in the rotational speed of the output from the flywheel means.
Assignee:
NOV; NOV-85-013771; EDB-86-118295
Patent Number(s):
US 4588040
OSTI ID:
5543305
Country of Publication:
United States
Language:
English