MANIFOLD AND MANUFACTURING METHOD THEREOF

摘要

( ) This invention relates to a manifold which is mounted either on the intake side or on the exhaust side of an internal combustion engine. The prior art manifold was manufactured with cast branch pipes which were connected to respective cylinder blocks. According to this invention, a main body of a manifold is divided into an end manifold, an intermediate manifold(s) and a base manifold, branch pipes are formed by the buldging process to project upright branch pipes on a side of each manifold, and manifolds are connected on ends with gaskets interposed therebetween so that the bending moment caused by the expansion of metal members due to hot exhaust gases may be absorbed instead of being concentrated on the roots of the manifold to enhance durability of the manifold.