| 摘要 |
PROBLEM TO BE SOLVED: To attain a high torque when a power in the direction opposite to that of the rotational direction of the output shaft of a prime mover is outputted to a driving shaft using the power outputted from the prime mover. SOLUTION: A power output device 10 is provided with an engine 50, a clutch motor 30 connected with a crank shaft 56 thereof, and an assist motor 40 connected with the crank shaft 56 or a driving shaft 22 by a switching device 80. When a vehicle travels backward, the operating characteristics of the engine 50 are taken as the characteristics on the low-torque side instead of those at the time of traveling forward (characteristics of efficiency priority). Thus, the torque Tm larger than and reverse to the engine torque Te is outputted from the assist motor 40. It is thus possible to regenerate power by the clutch motor 30 and output a high torque to the drive shaft 22, thereby moving the vehicle backward. |
