The present invention distributes the supercharged air from the compressor wheel of the turbocharger, which is smaller in high horsepower engine, through the two supply passages so that it is supplied to the throttle body so that the supercharge efficiency can be optimized by the intake pressure dispersion. As the supercharger in the engine, the present invention to achieve the above object;In the structure in which the turbocharger 20 is mounted over the intake line 30 and the exhaust line 40 of the engine 10,;The two supply passages 32 are pulled out from the compressor wheel 22 of the turbocharger 20, and the supply passages 32 are recombined immediately before the throttle body 31 so that the passage cross-sectional area of the intake air is increased. It is characterized by the configuration to reduce the boost pressure by allowing it to be expanded.
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