| US 7,549,944 B2 | ||
| Control apparatus for vehicular drive system, vehicle provided with the control apparatus, and method of controlling vehicular drive system | ||
| Atsushi Tabata, Okazaki (Japan); Yutaka Taga, Aichi-gun (Japan); Yuji Inoue, Nisshin (Japan); and Atsushi Kamada, Toyota (Japan) | ||
| Assigned to Toyota Jidosha Kabushiki Kaisha, Toyota-shi (Japan) | ||
| Filed on Jun. 21, 2006, as Appl. No. 11/471,634. | ||
| Claims priority of application No. 2005-182400 (JP), filed on Jun. 22, 2005. | ||
| Prior Publication US 2007/0155584 A1, Jul. 05, 2007 | ||
| Int. Cl. B60W 10/08 (2006.01) | ||
| U.S. Cl. 477—5 [477/3; 477/79; 477/180; 180/65.2; 180/65.7] | 24 Claims |
| 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.
|