Patent ID: 7922617
Filing Date: 2011-04-12
Classification: B60K,B60L,B60W,F16H,Y02T,Y10S,Y10T

Abstract:
1. A control device for a vehicular drive system having a differential portion including a differential mechanism having a first element connected to an engine, a second element connected to a first electric motor and a third element connected to a power transmitting member for distributing an output of the engine to the first electric motor and the power transmitting member, and a transmission portion disposed in a power transmitting path between the power transmitting member and drive wheels, the control device characterized by: a transmission portion shift limiting means that determines a permissible range of speed ratio of the transmission portion for a shift demand to the transmission portion in consideration of a rotational speed of a given element of the differential portion or a relative rotation speed between given elements of the differential portion so as to prevent the rotational speed of the given element of the differential portion or the relative rotation speed between the given elements of the differential portion from reaching a high rotation, and executes a limited shifting of the transmission portion if the speed ratio of a gear position demanded in the shift demand exceeds the permissible range.