POWER TRANSMISSION SYSTEM OF VEHICLE AND METHOD OF CONTROLLING THE SAME

摘要

A power transmission system of a vehicle includes an engine, a first rotating machine, a second electric machine, a differential unit, an engaging device disposed between the engine and the differential unit, and a controller. The differential unit has an input rotational element connected to the engaging device, a rotational element connected to the first rotating machine, and an output rotational element connected to the second rotating machine and drive wheels. When required driving force is equal to or larger than a first predetermined value when the vehicle is started, the controller is configured to control a slip amount of the engaging device and increase torque of the engine.