Composite insulation for engine components

Details Composite insulation for engine components Composite insulation for engine components

1993-09-24

1994-12-13

Hepperle, Stephen M.

Metal working

Method of mechanical manufacture

Prime mover or fluid pump making

295272, 123669, 228178, 428608, B22F 704, F02B 7702

Patent

active

053719441

ABSTRACT:
Engine components are thermally insulated with composite layers for improved engine efficiency. A metallic insulation layer is affixed to the metallic substrate of each component, and a layer of heat and corrosion resistant metal overlies and is bonded to the insulation layer. One preferred embodiment incorporates a preformed sheet layer of stainless steel sintered to a layer of metallic insulation attached to the component body substrate. An alternate embodiment incorporates a plasma-sprayed stainless steel layer over the insulation layer. A preferred process for making the engine component includes casting the component body in a mold containing a preformed insulation composite formed of a layer of stainless steel sheet sintered to a layer of metallic insulation.

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patent: 4334507 (1982-06-01), Kohnert et al.
patent: 4338380 (1982-07-01), Erickson et al.
patent: 4404262 (1983-09-01), Watmough

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