| 摘要 |
Propulsion unit (1) for a tractor, which unit (1) comprises a diesel engine (2) and two electrical machines (13, 20); unit (1) in which the diesel engine (2) and the two electrical machines (13, 20) are connected mechanically to a device (39) for subdivision/recombination of the power delivered by the diesel engine (2) and delivered/absorbed by the electrical machines (13, 20), the electrical machines (13, 20) being capable of operating both as generators and as motors. The unit (1) is characterized in that in at least one interval (R1, R2) of the ground speed of the tractor, the electrical fraction of the power delivered/absorbed by the electrical machines (13, 20) is zero. <IMAGE> |
