Patent ID: 7549944
Filing Date: 2009-06-23
Classification: B60K,B60W,F16H,Y02T,Y10T

Abstract:
1. A control apparatus for a vehicular drive system provided with a step-variable transmission portion operable to transmit an output of an engine to a drive wheel of a vehicle and functioning as a step-variable transmission, said control apparatus comprising: an input clutch operable to permit and inhibit an input of a drive force from said engine to said step-variable transmission portion; an input-clutch control portion operable to reduce a torque capacity of said input clutch, during a shifting action of said step-variable transmission portion, for limiting a torque to be transmitted to said step-variable portion, to a value not larger than a predetermined value, and a continuously-variable transmission portion including a differential mechanism operable to distribute an output of the engine to a first electric motor and a power transmitting member, and a second electric motor disposed in a power transmitting path between said power transmitting member and said drive wheel of the vehicle, wherein the continuously-variable transmission portion is operable as an electrically controlled continuously variable transmission, and wherein said step-variable transmission portion is disposed in the power transmitting path between the power transmitting member and the drive wheel.