Patent ID: 8365695
Filing Date: 2013-02-05
Classification: F02M

Abstract:
1. An intake manifold for an internal combustion engine, comprising two or more structural members joined together to define an intake passage including an inlet passage, an intake gas collection chamber, a plurality of branch passages, and outlet passages, said structural members including a first structural member, which is integrally provided with: an inlet connecting part to which is connected an intake passage forming part through which air is taken in, an outlet flange to be joined to a passage forming part of the internal combustion engine, provided with intake ports into which intake gas from the outlet passages flows, said outlet flange being located on downstream ends of the branch passages, and connecting means for connecting the intake manifold to the internal combustion engine; wherein the first structural member is provided integrally with an inlet part forming at least part of the inlet passage and having the inlet connecting part, the first structural member also being provided integrally with said outlet flange and said connecting means, the outlet flange is formed integrally with the inlet part and has an integral extension part extending across and outside the inlet part; fastening means are provided for fastening the outlet flange to a passage forming part of the internal combustion engine, some of said fastening means being disposed respectively on opposite sides of the inlet part, one of the some fastening means being provided on a base region of said extension part and positioned between the inlet part and one of the branch passages that is nearest to the inlet part, another one of the some fastening means being provided on an end region of said extension part, and said connecting means being provided integrally on an upstream end of said one branch passage nearest to the inlet part.