Denso Corporation

Jiro Asai

Tsuneyuki Egami

Shinichi Ogawa

Tomoya Katoh

A total of three permanent magnets, installed in a rotor core closely to an outer cylindrical surface of the rotor core, are disposed at predetermined angular pitches in the circumferential direction of the rotor core. All of the permanent magnets are magnetized in such a manner that the direction of magnetization is the same when seen in the radial direction. A plurality of magnet-less holes, extending in the axial direction in the vicinity of the outer cylindrical surface of the rotor core, are provided between two adjacent permanent magnets.

Permanent-magnet rotor for an inner rotor type electric rotary machine and magnet-saving type rotor for a synchronous motor

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.

Growing community of inventors

Okazaki, Japan

Jiro Asai