B - Operations – Transporting – 60 – L
Patent
B - Operations, Transporting
60
L
180/37
B60L 11/12 (2006.01)
Patent
CA 1289892
Clarence W. Ellers - Inventor Docket No. 3524 AUTOMATIC SERIES/PARALLEL FAIL SAFE HYBRID ELECTRIC/ICE VEHICLE DRIVE SYSTEM WITH FULLTIME ICE CRUISE CONTROL ABSTRACT OF THE DISCLOSURE Presented is a hybrid vehicle selectively driven by either an electric motor or an internal combustion engine acting independently of the other, or by both electric motor and internal combustion engine acting in unison. The vehicle is initially propelled by the electric motor working through a four speed transmission to drive a first set of wheels, and speed control is achieved by shifting of the transmission, either manually or automatically, while in electric drive alone. When the vehicle achieves a predetermined cruising speed while being propelled by the electric motor, a speed sensor activates the application of a less than maximum voltage to a magnetically actuated variable torque converter interposed between the second set of wheels, which are rotating on the roadway, and the internal combustion engine. The momentum of the vehicle, acting through the second set of wheels, actuates the variable torque converter to "crank" the internal combustion engine to start it. Slippage in the torque converter because of the less than maximum voltage applied to it permits progressive engagement between the torque converter and the internal combustion engine. When the engine starts, it drives a generator that then applies full voltage to the torque converter, resulting in a direct connection between the internal combustion engine, the torque converter and the second set of wheels, with the internal combustion engine running at a preset or predetermined constant speed. As soon as the internal combustion engine starts and is running at constant speed, the electric motor is deenergized as a driving unit. The electric motor may be re-established as a driving unit by depressing the accelerator pedal to the floor, thus energizing the electric motor, which now functions to assist the internal combustion engine in propelling the vehicle. Releasing the accelerator pedal while the vehicle is moving at faster than the preset cruising speed results in the electric engine again being deenergized. On the other hand, at speeds below the preset cruising speed, all that is required to shut down the internal combustion engine is to tap the brake pedal, whereupon the vehicle remains propelled only by the electric motor.
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