| 摘要 |
The object of the present invention is to control gearing in N' gearing steps in N gearing steps implemented by means of the engagement and release of friction elements. In the gearing control method for an automatic gear mechanism of the present invention, the engagement and release of the friction elements is controlled by controlling and selecting as factors two or more rotational speeds from among a turbine rotational speed, the rotational speed of a first motor-generator (MG1), the rotational speed of a second motor-generator (MG2)and the rotational speed of a planetary gear set. |
