Control device for hybrid vehicle drive apparatus

摘要

A control device for hybrid vehicle drive apparatus has a differential mechanism operative to perform a differential action and an electric motor. The control device prevents a second electric motor from reaching a high-speed rotation with a likelihood of degradation occurring in durability of the second electric motor when a "D" position is switched into an "N" position during a running of a vehicle. When a shift lever ( 49 ) is shifted into the "N" position during the vehicle running to interrupt a power transmitting path of an automatic shifting portion ( 20 ), a differential action of a power distributing mechanism ( 16 ) is limited. A limited differential action suppresses increases in rotation speeds of rotary members such as a clutch or a brake of the automatic shifting portion ( 20 ), a second electric motor (M 2 ) and a differential-portion planetary gear (P 0 ) or the like. Thus, degradation in durability of such rotary members due to high-speed rotations thereof can be minimized.