INTAKE PIPE OF INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To obtain heat interruption by a muffler container to a maximum by roughly concentrically providing the muffler container throughout almost the overall length of an intake pipe and prevent flexibility of a concertina part formed in the part of the intake pipe from being eliminated. SOLUTION: This intake pipe is provided with an air cleaner hose 1 and a muffler container 4 which is constituted by being formed roughly concentrically at spaces on the outer periphery throughout almost the overall length of the hose l by a blow molding and by tightly binding both the tip parts 5 and 6 to the outer periphery surface of the hose 1. On the part of the longitudinal direction of the hose l, an internal concertina part 3 with flexibility is formed. On the part of the longitudinal direction of the muffler container 4 and at the outer periphery location of the internal concertina part 3, an external concertina part 7 with flexibility is formed. A molding material of the muffler container 4 is switched to hard thermoplastic elastomer(TPE) 4h and soft (TPE) 4s on the way of the longitudinal direction and at least the external concertina part 7 is made of soft (TPE) 4s.