Engine block with unitarily cast exhaust gas passages and water

Details Engine block with unitarily cast exhaust gas passages and water Engine block with unitarily cast exhaust gas passages and water

1983-06-15

1985-12-24

Feinberg, Craig R.

Internal-combustion engines

Cooling

Multiple cylinders with equalized cooling

123195R, 123 65PE, 60323, F01P 312

Patent

active

045599084

ABSTRACT:
Disclosed herein is a method of fabricating an integrally cast engine block including a plurality of cylinders, exhaust passage portions which respectively extend from the cylinders and which form portions of exhaust gas passages of equal length, and a water jacket cavity including respective water jacket cavity portions in encircling relation to the exhaust passage portions, which method comprises the steps of providing a mold cavity which defines the exterior surface of the block, locating one or more disposable cores in the mold cavity so as to provide for the exhaust passage portions and for the water jacket cavity, filling the mold cavity with molten metal to provide a unitarily cast engine block, permitting soldification of the block with the cores contained therein, and removing the disposable cores from within the engine block to provide the hollow exhaust passage portions and the water jacket cavity.

REFERENCES:
patent: 2334972 (1943-11-01), Wallgreen
patent: 2740393 (1956-04-01), Hoffman
patent: 2810378 (1957-10-01), Burch
patent: 2867201 (1959-01-01), Dolza et al.
patent: 2975778 (1961-03-01), Wilcox
patent: 3324533 (1967-06-01), Watteau
patent: 3692006 (1972-09-01), Miller et al.
patent: 3744462 (1973-07-01), Herschmann et al.
patent: 4082068 (1978-04-01), Hale
patent: 4092956 (1978-06-01), List et al.
patent: 4175503 (1979-11-01), Ernest
patent: 4184462 (1980-01-01), Hale
patent: 4346676 (1982-08-01), Tyner

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