Drive unit for electric motor vehicle

Details Drive unit for electric motor vehicle Drive unit for electric motor vehicle

1992-11-25

1994-03-01

Johnson, Brian L.

Motor vehicles

Power

Electric

180 657, 318139, 318432, B60K 102

Patent

active

052898903

ABSTRACT:
A drive unit for an electric motor vehicle includes first and second electric motors having characteristics which achieve high efficiencies in different operational regions. A common motor shaft receives output torques from both of the first and second motors, which output torque are then transmitted to a drive wheel. Sensors are provided for sensing a travelling condition of the vehicle and the rotational speeds of the first and second motors. Request torque, i.e. that torque required for the travel of the vehicle, is determined in accordance with the detected travelling condition of the vehicle. The determined request torque is distributed to the first and second motors in accordance with the detected rotational speeds to govern the output torques of the first and second motors.

REFERENCES:
patent: 3297926 (1967-01-01), Campbell et al.
patent: 4766967 (1988-08-01), Slicker et al.
patent: 5101924 (1992-04-01), Yamagiwa et al.
patent: 5166584 (1992-11-01), Fukino et al.
patent: 5172784 (1992-12-01), Vorela, Jr.

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