FIELD: supercharging units. SUBSTANCE: system has supercharging unit which consists of centrifugal compressor with guide vanes assembly provided with blades and volute. Combined with centrifugal compressor is supercharging air cooler made in form of jackets. Guide vanes assembly and volute are provided with such jackets. Blades of guide vanes assembly are hollow and their interior is connected with jacket space of guide vanes assembly. Mounted in compressor volute are heat exchange elements whose internal chambers are connected with jacket space of volute. Heat exchange elements mounted in compressor volute increase heat exchange surface of supercharging air cooler, reduce supercharging air temperature and increase mass of air charge of engine cylinder, thus enhancing engine power. EFFECT: enhanced power of engine.
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