HYBRID POWER TRAIN OF VEHICLE

摘要

PURPOSE: A hybrid driving apparatus of a vehicle is provided to maximize high speed fuel efficiency with an over drive gear mode, and to improve acceleration performance of the vehicle with an under drive gear mode. CONSTITUTION: A planet gear device(1) has four rotational elements. An engine(3) and a first motor generator(5) are connected to the rotational elements of the plant gear device. A second motor generator(7) is connected to the other rotation elements of the planet gear device. A first brake(9) restricts rotation elements connected to the second motor generator. A second brake restricts the rotation elements connected to the first motor generator.