US Patent 10525816 Drive unit for hybrid vehicles

Provided is a drive unit for a hybrid vehicle which can increase selectable modes in an EV mode. A drive unit includes a first planetary gear unit connected to an engine, and a second planetary gear unit connected to a second rotary element of the first planetary gear unit. The drive unit includes a first engagement device which connects rotary elements of the first planetary gear unit, a third rotary element in the first planetary gear unit, a second engagement device which connects any one of a fifth rotary element and a sixth rotary element in the second planetary gear unit, and a third engagement device which can fix a first rotary element of the first planetary gear unit.