Accessory-driving equipment connects an engine having an idle stop system,
a motor-generator and an accessory including an air-conditioner compressor
that is driven even at a time when the idle stop system is operated. The
accessory is driven by the engine when the engine is running and driven by
the motor-generator when the idle stop system is operated. The
accessory-driving equipment includes a first shaft for connecting to the
engine, a second shaft for connecting to the motor-generator, a third
shaft for connecting to the accessory, a lock device for locking the third
shaft and a clutch. The clutch and the lock device are operated so that a
torque transmitted from the engine through the first shaft is distributed
to the motor-generator and the accessory, or a torque is transmitted from
the motor-generator to the engine.
