Method of preparing an exhaust port arrangement of a cylinder he

Details Method of preparing an exhaust port arrangement of a cylinder he Method of preparing an exhaust port arrangement of a cylinder he

1976-07-15

1979-04-10

Lazarus, Richard B.

Metal founding

Process

Shaping liquid metal against a forming surface

164 98, 164132, 164137, B22D 1900

Patent

active

041483529

ABSTRACT:
A heat insulation layer is provided on the exterior surface of a port liner. The port liner is installed in the exhaust port passage upon casting of a cylinder head by filling a moulding material in the cavity of the port liner to serve as an exhaust port, mounting preformed and cured separate layers of moulding material on the exterior surface of the port liner and using the port liner with a mass of a moulding material therein and separate layers of a moulding material thereon as a core for casting an exhaust port passage and a heat insulation layer of the exhaust port.

REFERENCES:
patent: B499227 (1976-01-01), Hayes et al.
patent: 2065287 (1936-12-01), Nutt
patent: 2978764 (1961-04-01), Hrabovsky

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