CONTROL UNIT OF HYBRID VEHICLE

摘要

PROBLEM TO BE SOLVED: To provide a control unit of a hybrid vehicle capable of suppressing degradation of drivability occurring when a request driving force is augmented.SOLUTION: When an engine running mode is set to partial cylinder running (S1) and a power dividing mechanism is in a non-differential state (S2), if a request driving force is augmented, high-output mode switching control under which the engine running mode is switched from the partial cylinder running to all cylinders running, and differential state switching control under which the state of the power dividing mechanism is switched from the non-differential state to a differential state are implemented (S3). If an augmentation speed V of the request driving force exceeds a threshold Vth and a magnitude of augmentation Q exceeds a threshold Qth (S5 and S6), the high-output mode switching control and differential state switching control are concurrently implemented (S7). In the other cases, the high-output mode switching control is implemented. Thereafter, the differential state switching control is implemented (S8).