Metal founding – Process – Shaping a forming surface
Patent
1977-09-06
1980-04-15
Baldwin, Robert D.
Metal founding
Process
Shaping a forming surface
164 45, 164235, B22C 904
Patent
active
041978994
ABSTRACT:
An internal combustion V-8 engine is disclosed having an aluminum semi-permanent mold head cast by a low-pressure die-cast process and an iron block cast by the evaporative casting method. The block and head have controlled thickness walls throughout to optimally lower the metal/working volume ratio of the engine. The block employs barrel cylinder walls cast integrally and unsupported except at the barrel ends and at a siamese connection between adjacent barrels; the barrels are maintained under a predetermined level of compression to eliminate fatigue failure and suppress sound. The block is sand cast and the head is totally formed with a three piece die and one sand core cluster, except for one passage which is drilled subsequent to casting. The engine is reduced in weight by at least 20% over conventional comparable engines; torque and horsepower is improved even though the cooling system capacity has been reduced to less than half that of a conventional cooling system.
REFERENCES:
patent: 2830343 (1958-04-01), Shroyer
patent: 3166992 (1965-01-01), Francis
patent: 3557867 (1971-01-01), Krzyzanowski
patent: 3581802 (1971-06-01), Krzyzanowski
patent: 3884201 (1975-05-01), Cregan
Baldwin Robert D.
Ford Motor Company
Lin K. Y.
Malleck Joseph W.
Zerschling Keith L.
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