Patent ID: 8210296
Filing Date: 2012-07-03
Classification: B60K,B60L,B60W,F16H,Y02T,Y10T

Abstract:
1. A power output apparatus configured to output power to a driveshaft, the power output apparatus comprising: an internal combustion engine; a first motor constructed to input and output power; a second motor constructed to input and output power; an accumulator arranged to transmit electric power to and from each of the first motor and the second motor; a power distribution integration mechanism configured to have a first element connecting with the rotating shaft of the first motor, a second element connecting with the rotating shaft of the second motor, and a third element connecting with an engine shaft of the internal combustion engine and arranged to allow mutually differential rotations of the three elements; a speed change-transmission assembly configured to selectively connect either one or both of a rotating shaft of the first motor and a rotating shaft of the second motor to the driveshaft and transmit the output power from the first motor and the output power from the second motor to the driveshaft at preset speed ratios; a power demand setting module configured to set a power demand as a power required for the driveshaft; and a controller programmed to control the first motor and the second motor so as to substantially equalize an output torque of the first motor with an output torque of the second motor and ensure output of a power equivalent to the set power demand to the driveshaft in a state that both of the first motor and the second motor are connected to the driveshaft by means of the speed change-transmission assembly, the driving source element connection is released by the connecting-disconnecting device and operation of the internal combustion engine is stopped.