Tubular intake manifold and method for making same

Details Tubular intake manifold and method for making same Tubular intake manifold and method for making same

1992-01-15

1993-10-19

Okonsky, David A.

Internal-combustion engines

Multiple cylinder

29458, F02M 3510

Patent

active

052536165

ABSTRACT:
An intake manifold (10) includes cast plenum (12) and flange (14) members defining a plurality of outlet (22) and inlet (24) holes therein. Tubes (16) have opposite first (44) and second (46) ends which are received into the outlet (22) and inlet (24) holes with an interference fit and joined thereto with metallurgical bonds (48,50) comprising a low melting point metal coating material (52), such as zinc, alloyed with the tube metal and each of the plenum and flange metals. The method includes coating the ends (44,46) of the tubes (16) and the walls of the holes (22,24) with the molten coating material (52), heating the plenum (12) and flange (14) to an elevated temperature and then forcing the tubes (16) into the holes (22) to form the metallurgical bonds (48,50).

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