STRUCTURE FOR EXHAUST COLLECTIVE PART

PROBLEM TO BE SOLVED: To decrease an emitted sound by reducing exhaust interference in a collective part of exhaust gas discharged from two pipes connected to an exhaust manifold. SOLUTION: A structure has an upstream exhaust pipe A wherein two pipes 1 one end of which is connected to an exhaust manifold are bent at a specified angle to come in contact with each other in the other end 1a and a downstream exhaust pipe B molded by fitting an outside element pipe 6 to one end part of an inside element pipe 5, spreading both the element pipes 5, 6 to closely contact with each other and by making a close contact part correspond to a shape of an end part 1b of the two pipes 1 in the upstream exhaust pipe A, and a contact end part of the two pipes of the upstream exhaust pipe A is fitted to a molded part of the downstream exhaust pipe B, to be welded.