| 摘要 |
<p>A supercharger (1) associated with an internal combustion engine (20) has a rotatable shaft (7) on which there is mounted a rotary electric machine (MG) which is operable as an electric motor or as an electric generator. When the motor vehicle driven by the internal combustion engine is braked, the rotary machine is operated as a loaded generator to enable the supercharger turbine to act as a load on the exhaust manifold (21) of the engine, thereby increasing the force of exhaust braking. If the motor vehicle is to be further decelerated, the rotary machine is operated as a motor to reverse the direction of rotation of the turbine impeller for further increasing the load on the exhaust manifold to add to the exhaust braking force. While the rotary machine is being operated as a generator, electric power generated thereby may be used to charge a battery (32). When the rotary machine is operated as a motor, the stored electric power is supplied from the battery to the rotary machine. If the engine is running at a low speed, the rotary machine may be operated as a motor for driving the turbine and the compressor in the normal direction at a higher speed, thereby increasing the air feed to the engine. </p> |
