Functional combined equipment for motor vehicle

A shaft (423) of a planetary gear mechanism (420) is connected via a lock mechanism (460) to an air-conditioner compressor (450). A shaft (422) is connected to an engine (1), and a shaft (421) is connected to a motor-generator (440). The shaft (421) or the shaft of the motor-generator (440) is linked to the shaft (423) through a clutch mechanism (430). A control unit (7) reduces shock by changing the rotation speed of the motor-generator (440) on the basis of the engine speed and reducing a speed difference between the input shafts of the clutch mechanism (430) and a speed difference between the input shafts of the lock mechanism (460) before engaging of the clutch mechanism (430) and releasing of the lock mechanism (460).