Control apparatus for vehicular drive system

A vehicular power transmitting system comprising;

• a transmission portion constituting a part of a power transmitting path;
• an electric motor connected to the power transmitting path and including a rotor;
• an electrically controlled differential portion connected to the electric motor, and having a differential state between rotating speeds of its input and output shafts, which differential state is controllable according to a change of an operating speed of the electric motor;
• a casing accommodating said transmission portion, said electric motor and said electrically controlled differential portion;
• and
• a support member for supporting said rotor of the electric motor, said support member including a support portion formed in one axial end portion thereof, at which the rotor is supported rotatably about its axis, and a tapered portion having a diameter which increases in an axial direction from said one axial end portion toward the other axial end portion at which the support member is fixed to said casing,
• and wherein said support member has fluid passages formed through said tapered portion so as to extend from said other axial end portion toward a radially inner part of the support member, each of said fluid passages having a circular shape in transverse cross section taken in a plane perpendicular to a direction of its extension,
• said each fluid passage having an open end which corresponds to said other axial end portion and which has an elliptical shape in cross section taken in a plane inclined with respect to the direction of extension of the fluid passage, said each fluid passage communicating at said open end with a fluid passage formed through said casing.

A vehicular power transmitting system comprising:

• a transmission portion constituting a part of a power transmitting path and including a clutch and a brake that are disposed adjacent to each other in an axial direction thereof;
• an electric motor connected to the power transmitting path and including a rotor;
• an electrically controlled differential portion connected to the electric motor, and having a differential state between rotating speeds of its input and output shafts, which differential state is controllable according to a change of an operating speed of the electric motor;
• a casing accommodating said transmission portion, said electric motor and said electrically controlled differential portion;
• a support member for supporting said rotor of the electric motor, said support member including a support portion formed in one axial end portion thereof, at which the rotor is supported rotatably about its axis, and a tapered portion having a diameter which increases in an axial direction from said one axial end portion toward the other axial end portion at which the support member is fixed to said casing;
• and
• a holder member for holding a hub of said clutch and a hub of said brake such that said hubs of the clutch and brake are disposed on respective axially opposite sides of said holder member.