Intake manifold with in-built heat exchanger

Air intake manifold (1) comprising a heat exchanger (2) that is entirely integrated into a hollow body (3) of the manifold, said heat exchanger (2) being located entirely inside the hollow body (3) of said manifold (1) and having at least two connecting pieces (4 and 4′) for the inflow and outflow of heat exchange liquid, said connecting pieces (4, 4′) extending through the wall (3′) of the body (3) of the manifold (1) making, in the area of each of the connecting pieces, a liquid-tight seal (5) and an airtight seal (6) that are separate and mutually offset along the longitudinal axis (AL) of the connecting piece (4, 4′) respectively under consideration,

• an interface piece (9) attached to the hollow body (3) of the manifold (1) in a fluid tight manner and through which the connecting pieces (4, 4′) pass through,
• each of the connecting pieces (4, 4′) having a corresponding extension end fitting (8, 8′) through which their respective connecting piece (4, 4′) passes through, each of the extension end fittings (8, 8′) having a removable attachment means (22) which fixes their respective extension end fitting (8, 8′) to the interface piece (9),
• wherein a means (5′) forming the liquid-tight seal (5) is, for each of the connecting pieces (4 and 4′), arranged between the connecting piece (4, 4′) and its respective extension end fitting (8, 8′), a means (6′) forming the airtight seal (6) is positioned between the connecting piece (4, 4′) and the interface piece (9), the liquid-tight seal (5) being located, in relation to the interior volume of the body (3) of the manifold (1), beyond the airtight seal (6), i.e., more toward the exterior than the latter, and wherein a leak path (10) associated with the liquid-tight seal (5) and configured to discharge the liquid leaks to the outside environment is provided between this liquid-tight seal (5) and the airtight seal (6).