| 摘要 |
A control system for a hybrid drive unit, comprising: a gear mechanism (9) having different rotary members connected to a plurality of power sources (1,2); and a plurality of engagement elements (C1,C2,B1) adapted to be applied by a hydraulic pressure for coupling the rotary members to each other in the gear mechanism and for stopping rotations of a predetermined rotary member, wherein in accordance with applied/released states of the engagement elements, there can be set: a forward running range for a forward run by transmitting an input torque to an output member; a backward running range for a backward run by transmitting an input torque to the output member; and a stop range capable of driving one of the power sources by the other. The control system further comprises a range switching valve activated in response to the individual set ranges for switching and outputting an initial pressure for applying the engagement elements, to a plurality of passages, and adapted, when the stop range is set, to output the hydraulic pressure to the engagement element for establishing a torque transmission passage from one of the power sources to the other and to block the feed of the initial pressure to the engagement element for establishing, when applied, the torque at the output member. <IMAGE> |
