Supercharger with a planetary gear mechanism

A supercharger of an engine, the supercharger comprising:

• motor/generator means;
• compression means for compressing air introduced into an intake air system of the engine;
• planetary gear means including a sun gear, at least one planetary gear, and a ring gear, the sun gear rotating in accordance with a driving shaft of the engine, the at least one planetary gear rotating in accordance with the motor/generator means and the ring gear rotating in accordance with the compression means;
• and
• driving means for driving the motor/generator means to control a rotational speed of the at least one planetary gear, wherein the rotational speed of the ring gear is controlled independently of the sun gear, and wherein the control of the rotational speed of the at least one planetary gear allows a rotational speed of the compression means to be controlled independently of a rotational speed of the engine.

A supercharger of an engine, the supercharger comprising:

• a motor/generator;
• a compressor provided in an intake air system of the engine;
• a planetary gear mechanism including a sun gear connected to a driving shaft of the engine, at least one planetary gear connected to the motor/generator and a ring gear connected to the compressor;
• and
• a controller for driving the motor/generator to control a rotational speed of the at least one planetary gear, wherein the rotational speed of the ring gear is controlled independently of the sun gear, and
• wherein control of the rotational speed of the at least one planetary gear allows a rotational speed of the compressor to be controlled independently of a rotational speed of the engine.