Patent ID: 7618343
Filing Date: 2009-11-17
Classification: B60K,B60W,F16H,Y02T,Y10T

Abstract:
1. A control apparatus for a vehicular drive system provided with a transmission mechanism constituted by a first transmission portion in the form of a continuously-variable transmission portion operable as an electrically controlled continuously variable transmission, and a second transmission portion, said continuously-variable transmission portion having a differential mechanism operable to distribute an output of an engine to a first electric motor and a power transmitting member, and a second electric motor disposed in a power transmitting path between the power transmitting member and a drive wheel of a vehicle, said second transmission portion constituting a part of said power transmitting path, said control apparatus comprising: a continuous-transmission control device including, wherein said continuous-transmission control device selectively activates said first shifting control portion and said second shifting control portion, on the basis of a manner in which an overall speed ratio of said transmission mechanism is changed, and wherein when an amount of change of the overall speed ratio is greater than a first predetermined value or a rate of change of the overall speed ratio toward a target value thereof is greater than a second predetermined value, the continuous-transmission control device performs a non-continuous change of the overall speed ratio with the second shifting control portion by adding an amount of change of the speed ratio of the continuously-variable transmission portion to an amount of change of the second transmission portion.