Patent ID: 9221459
Filing Date: 2015-12-29
Classification: B60K,B60W,Y02T,Y10S,Y10T

Abstract:
1. A power transmission unit having a plurality of power split rotors that rotate in conjunction with each other to split power among a rotary electric apparatus, an internal combustion engine, and drive wheels, the power split rotors including: a start rotor that supplies a start rotational force to the internal combustion engine; and a transmission rotor separate from the start rotor and mechanically coupled to the internal combustion engine, the power transmission unit comprising: a speed ratio varying device that makes variable a speed ratio, which is a ratio of a rotation speed of the drive wheels relative to a rotation speed of the transmission rotor; a start power transmission regulating device that switches transmission and interruption of power from the start rotor to the internal combustion engine; and a transmission power transmission regulating device that switches transmission and interruption of power from the internal combustion engine to the transmission rotor, wherein a high start setting is provided such that when a ratio of a rotation speed of the drive wheels relative to a rotation speed of the transmission rotor is heightened by decreasing the rotation speed of the transmission rotor using the speed ratio varying device, a rotation speed of the start rotor increases.