BigPatents India

Third through fifth conduit sections 80C through 80E of a secondary air inducting conduit 80 are exposed to a space S in the rear of a front wheel 60 and in front of an engine 20, and thus the third through the fifth conduit sections 80C through 80E become a secondary air cooling conduit section for cooling down secondary air. Thereby, secondary air flowing through the secondary air inducting conduit is cooled down by the third through the fifth conduit sections 80C through 80E, and an oxygen concentration of secondary air is increased. No. of Pages : 34 No. of Claims : 7