Intake manifold in two parts and method for the production thereof

Manifold consisting of a hollow body defining an intake or plenum chamber and a plurality of pipes provided in the region of their free end(s) with a pivoting valve device, fitted with its rotatory support shaft in an assembly site. Intake manifold characterised in that said hollow body (1') is formed by two parts (12 and 13) joined together, in that a first single-piece part (12) incorporates a first wall portion of the hollow body (1') delimiting a part of the intake chamber (2) and forming a part of the pipes (3), with, in particular, conduit portions (15) forming the free ends (4) of said pipes (3) and comprising the fitting sites for the valve devices (5), and in that a second single-piece part (13) incorporates, on the one hand, a second wall portion of the hollow body (1'), which second portion is complementary to the first portion so as to delimit the intake chamber (2) and form the pipes (3), and, on the other hand, an additional wall portion forming a protective sealing cap.