Hybrid vehicle power output apparatus and method of controlling the same during engine braking

摘要

A power output apparatus of the present invention includes an engine (50), a clutch motor (30) and an assist motor (40) connecting with a crankshaft (56) of the engine (50), and a controller (80) for controlling the clutch motor (30), the assist motor (40), and the engine (50). When a braking torque is applied from the clutch motor (30) to a drive shaft (22), the engine (50) is raced by a reaction force of the braking torque. When fuel injection is stopped under such condition, the engine (50) rotates at a revolving speed to make the reaction force balance with a friction of piston sliding movement and the like. The braking torque is applied to the drive shaft 22 by regenerative control of the clutch motor (30) when the revolving speed of the engine (50) is less than the revolving speed of the drive shaft (22), and by power control of the clutch motor (30) when the revolving speed of the engine (50) is greater than the revolving speed of the drive shaft (22).