Abstract:
between two half-shells (2, 3) molded and fixed to each other in order to form an envelope (1), there are mounted air tubes (12a) with a ringed external face (14) and a smooth interbl face (13) which are fixed by means of end sleeves (17a, 18a) to the envelope (1). The outlet sleeve (18a) is held within a half-shell (3) by means of a fixing clamp (6) to the cylinder-head of the engine by being sealingly connected to an opening (7) of the nozzle comprised of a cradle (29a) integrally cast cover (31a) fixed to the cradle in prder to hold a seal (28) to the extremity of the outlet sleeve (18a), the seal being compressed between the sleeve (18a) and the nozzle (29a, 31a). Application particularly to intake manifolds of internal combustion engines, preferably with controlled ignition.
Abstract:
Between the two half-molds (2, 3) fixed against each other in order to form an envelope (1), one-piece blow-molded air tubes (12a, 12b) are mounted; the outlet (14a, 14b) of the tubes is held in a half-mold (3) by means of a fixing clamp (6) to the cylinder-head of the engine while being sealingly connected to an opening (7) of the clamp (6) for supplying one cylinder by means of a tubular nozzle formed of a cradle (20a, 20b) molded with the clamp (6) and the half-mold (3), and a staple (22a, 22b) fixed to the cradle to hold a ring (17) on the outlet of the tube while compressing a seal (18) between the tubes (12a, 12b) and the nozzle. Application particularly to intake manifolds of engines with multipoint injection and controlled ignition.