| 摘要 |
A control device for a drive system (e.g. an automatic transmission system) in a hybrid vehicle properly controls a shift in a transmission portion 20 upon receipt of a shift demand so that a given element of a differential portion 11 is not subjected to damaging relatively high rotational speeds. For a shift demand to the transmission 20, the transmission portion shift limiting means (86, fig 7) determines a permissible range in terms of a speed ratio of the transmission 20 in consideration of the rotational speed of the given element of the differential portion 11 for thereby limiting shifting of the transmission portion 20 based on the permissible range. Thus, when the shift demand to the transmission 20 is present, the given element of the differential portion 11 can avoid high rotation rotational speeds. This enables suppression of the high rotational speeds of, for instance, first and second electric motors M1, M2 and a first planetary gear P1, thereby improving durability of the first and second electric motors M1, M2 and the first planetary gear P1. |
