Patent ID: 7941259
Filing Date: 2011-05-10
Classification: B60K,B60W,F16H,Y02T,Y10S,Y10T

Abstract:
1. A control device for a vehicular drive system arranged to transmit an output of an engine to a drive wheel of a vehicle, comprising: a transmission mechanism of switchable type switchable between a continuously-variable shifting state in which the transmission mechanism is operable as an electrically controlled continuously variable transmission, and a step-variable shifting state in which the transmission mechanism is operable as a step-variable transmission; and switching control means for placing said transmission mechanism of switchable type selectively in one of said continuously-variable shifting state and said step-variable shifting state, on the basis of a predetermined condition of the vehicle, wherein said transmission mechanism of switchable type has a power distributing mechanism including a first element fixed to said engine, a second element fixed to a first electric motor, and a third element fixed to a power transmitting member, and wherein said power distributing mechanism includes a differential-state switching device operable to place said transmission mechanism of switchable type selectively in said continuously-variable shifting state and said step-variable shifting state, said switching control means being operable to control said differential-state switching device, so as to place said transmission mechanism selectively in said continuously-variable shifting state and said step-variable shifting state.