Method of making and apparatus for monoblock engine construction

Details Method of making and apparatus for monoblock engine construction Method of making and apparatus for monoblock engine construction

1987-12-24

1989-08-22

Lin, Kuang Y.

Metal founding

Process

Shaping a forming surface

164 98, B22D 1916

Patent

active

048586706

ABSTRACT:
A method of making a cast dual-metal monoblock, by (i) casting an iron-based insert to define walls for one or more chambers or passages for each of combustion, piston reciprocation, gaseous induction and gaseous exhaust; (ii) forming a sand core wrapping directly about said insert to cover such insert except for the extremities of the walls defining the passages for gaseous induction and exhaust and the chamber for piston reciprocation, such extremities being remote form the walls defining the combustion chamber; and (iii) die casting an aluminum-based metal jacket about the assembly of said insert and core wrapping to complete the dual-metal monoblock. Advantageously, in step (ii), there is further included the formation of a top sand core assembly for defining one or more oil and/or valve train passages or chambers, the top sand core assembly being stationed to rest on the insert during casting of the jacket.

REFERENCES:
patent: 2978764 (1961-04-01), Hrabovsky
patent: 3521613 (1968-09-01), Celli
patent: 3965961 (1976-06-01), Gunnergaard
patent: 4077458 (1978-03-01), Hayashi et al.
patent: 4252175 (1981-02-01), Whipple
SAE 710150 "Vega 2300" by Reuss et al, 1971, p. 22.
SEA 307C "Chrysler Corporation's Die-Cast Aluminum Slant Six Engine", by Moeller et al, 1961, pp. 5-11.

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