초록 ▼

In a power output apparatus of the present invention, a control unit sets a WOT (wide open throttle) line L2, where the maximum torque of an engine attains, as a boundary between an over drive area and an under drive area in the case where a rotor shaft of an assist motor is set in a state of over d

In a power output apparatus of the present invention, a control unit sets a WOT (wide open throttle) line L2, where the maximum torque of an engine attains, as a boundary between an over drive area and an under drive area in the case where a rotor shaft of an assist motor is set in a state of over drive linkage. The control unit determines a target working point of an outer rotor shaft of a clutch motor, which functions as a drive shaft, based on an externally required output, and selects the WOT line L2 as a performance line of the engine in the case where the target working point of the outer rotor shaft is present in the under drive area. The control unit then sets a switching instruction flag, in order to change the state of linkage of the rotor shaft of the assist motor from the state of over drive linkage to a state of under drive linkage. This arrangement of the invention reduces the maximum load capacity of the assist motor and decreases the maximum electric current of an inverter circuit for driving the assist motor.

대표청구항 ▼

1. A power output apparatus comprising an engine with an output shaft, a drive shaft to which power is output, a power regulation unit that is connected with both the output shaft and the drive shaft, regulates power output from said engine with input and output of electric power, and transmits the

1. A power output apparatus comprising an engine with an output shaft, a drive shaft to which power is output, a power regulation unit that is connected with both the output shaft and the drive shaft, regulates power output from said engine with input and output of electric power, and transmits the regulated power to the drive shaft, a motor with a rotating shaft, and a linkage mechanism that selectively links the rotating shaft of said motor with either one of the output shaft and the drive shaft,wherein a performance area, which is defined by a relationship between torque and revolving speed, is divided by a first performance line and a second performance line, which has a higher torque in a predetermined range of revolving speed than the first performance line, into a first area that mainly adjoins to the first performance line, a second area that is interposed between the first performance line and the second performance line, and a third area that mainly adjoins to the second performance line, said power output apparatus further comprising: a performance line selection unit that selects either one of the first performance line and the second performance line as an engine performance line that is used to determine a working point of said engine in the performance area according to a state of the linkage mechanism; and a control unit that causes said performance line selection unit to select the first performance line as the engine performance line in the case where a working point of the drive shaft is present in the first area, and to select the second performance line as the engine performance line in the case where the working point of the drive shaft is present in the third area.