Internal-combustion engines – Particular piston and enclosing cylinder construction – Cylinder detail
Patent
1978-08-14
1980-07-15
Myhre, Charles J.
Internal-combustion engines
Particular piston and enclosing cylinder construction
Cylinder detail
123 52MC, 123 4172, 123 4179, 123 55UE, F02B 7522
Patent
active
042122813
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.
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Feinberg Craig R.
Ford Motor Company
Malleck Joseph W.
Myhre Charles J.
Zerschling Keith L.
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