Patent ID: 7909123
Filing Date: 2011-03-22
Classification: B60K,B60L,B60W,F16H,Y02T

Abstract:
1. A control apparatus for a hybrid driving apparatus installed in a vehicle, said control apparatus comprising: an internal combustion engine; a first electric motor; an engaging device comprising first and second engagement elements which can engage with each other; a power dividing device comprising a plurality of rotational elements including a first rotational element connected to an output shaft of said internal combustion engine, a second rotational element connected to an output shaft of said first electric motor, a third rotational element connected to a driving shaft of the vehicle, and a fourth rotational element connected to the first engagement element, the rotational elements being adapted to mutually perform differential rotation; and a second electric motor whose output shaft is connected to the third rotational element, wherein said first electric motor is capable of controlling rotational speeds of the first and fourth rotational elements, wherein a stepless speed-change mode, which can continuously change a rotational speed ratio between the driving shaft and the output shaft of said internal combustion engine, is realized, as a speed-change mode of the vehicle by that the second rotational element has reaction torque of output torque of said internal combustion engine if said engaging device is in a release state in which the first engagement element is released from the second engagement element, wherein a fixed speed-change mode, which fixes the rotational speed ratio to a predetermined value, is realized, as the speed-change mode, by that the fourth rotational element has the reaction torque if said engaging device is in an engagement state in which the first engagement element engages with the second engagement element, wherein said control apparatus further includes wherein the controlling device controls said engaging device such that said engaging device is in the release state after the release preparing control is performed if the fixed speed-change mode is chosen as the speed-change mode and the specified pressing operation amount is greater than or equal to a third reference value.