B - Operations – Transporting – 60 – L
Patent
B - Operations, Transporting
60
L
180/37
B60L 11/02 (2006.01)
Patent
CA 1138347
A B S T R A C T A constant-speed continuously-running low-powered diesel engine or turbine drives a two-phase alternator, the output from which, for direct drive, flows to the stator pole piece windings of four independently-rotating stepping motors operating syn- chronously with the alternator. Each stepping motor is connected to a traction wheel of a motor vehicle, thereby propelling at limited maximum speed sufficiently to overcome normal wind resis- tance over a level road. In starting, during acceleration, and for propulsion at lower speeds, direct current from a storage battery is caused to pulsate and is added to the current from the alternator to the stepping motors. A control circuit selec- tively controls the frequency of a variable frequency generator electrically connected to the pulse-responsive electrical power system to vary the frequency of the current supplied to the step- ping motors and thus vary the vehicle speed. During idling, the alternating current from the alternator is rectified and recharges the battery. During braking, the consequent driving of the step- ping motors causes them to generate alternating current which is rectified and returned to the battery. By varying the frequencies of the current delivered to the right side motors as compared with those delivered to the left side motors and vice versa, in response to the turning of the steering wheel in rounding a curve in the road, a differential action is obtained. In a modification, combustion of fragmented slow-burning solid fuel, such as wood fragments, in the combustion chamber of a portable combustion receptacle or pressure vessel mounted on the rear of the vehicle, is initiated by igniting in the combus- tion chamber combustible starting fluid gas, such as propane gas from an external source and ignited by a spark plug. Air is sup- plied by an air compressor driven by a prime mover such as a turbine or electric motor. As soon as combustion of the solid fuel has become self-sustaining, the supplying of this starting gas is terminated. Meanwhile, the pressurized gas emitted from the burning solid fuel in the combustion receptacle is discharged into the power turbine by way of a throttle valve. The output shaft of the turbine drives a speed-reducing transmission which in turn drives the alternator.
344985
Borden Ladner Gervais Llp
Fengler Werner H.
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