Turbo-supercharger for internal combustion engine

A turbo-supercharged motorcycle including:

• a frame;
• an engine mounted on the frame and having a suction pipe defining a suction passage and an exhaust pipe defining an exhaust passage;
• a turbo-supercharger connected with said engine and comprising:
• a turbine disposed at an intermediate portion of said passage for the engine and driven by a gas flowing therein, and
• a compressor disposed at an intermediate portion of said suction passage for the engine and driven by the turbine;
• a pre-chamber disposed at that portion of said suction passage which is on the downstream side of said compressor;
• a branch passage connected to said suction passage at that portion thereof which is upstream of said compressor;
• a resonance chamber communicated with said suction passage via said branch passage;
• a throttle valve disposed in said suction passage downstream of said pre-chamber;
• and
• a cowling set on said frame so as to cover a front portion thereof, said resonance chamber being formed by means for preventing surging positioned in a dead space of said cowling.