With the rapid growth of car ownership in the world, the energy saving and emission reduction for vehicles is becoming more and more urgent, since the petroleum resource's shortage has caused rise of oil prices a lot. Turbo-supercharged engine make use of exhausted gas with a certain temperature and pressure to drive the turbine to work, so as to drive the compressor to rotate, thus compressing the air. In this way, energy of the exhausted gas is recovered. So the engine can not only obtain a satisfying fue...