Exhaust manifold with reflective insulation

Details Exhaust manifold with reflective insulation Exhaust manifold with reflective insulation

1978-03-29

1979-09-25

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Having vibration attenuating, or expansion and contraction...

60282, 60323, 164 98, 164108, 164112, F01N 710

Patent

active

041686101

ABSTRACT:
A manifold for internal combustion engines is provided which has a unique insulation system for maintaining a skin temperature of the manifold below 400.degree. F. The manifold includes an exhaust conduit made up of axially spaced and aligned segments with provision for preventing excessive leakage of exhaust gases between the spaced segments. Each segment has an exhaust port extending at an angle thereto. Two or more members of corrugated or crumpled thin foil are concentrically arranged about the ports and about the conduit with air gaps between the conduit and the innermost member, between the port and the innermost member, and between each member. An outer casing is cast about the members and embeds the ends of the members therein. The foil from which the members are made is polished on the surfaces to be highly reflective thereby reducing the transfer of heat through the successive concentric members. A method of manufacturing the improved insulated manifold is provided.

REFERENCES:
patent: 2886945 (1959-05-01), Hofer
patent: 3173451 (1965-03-01), Slayter
patent: 3324533 (1967-06-01), Watteau
patent: 3413803 (1968-12-01), Rosenlund
patent: 3581494 (1971-06-01), Scheitlin
patent: 3709722 (1973-01-01), Rice
patent: 3722221 (1973-03-01), Chopin
patent: 3750403 (1973-08-01), Deutschmann
patent: 3775979 (1973-12-01), Scheitlin
patent: 3799196 (1974-03-01), Scheitlin
patent: 3864908 (1975-02-01), Lahaye
patent: 4077458 (1978-03-01), Hayashi
patent: 4106288 (1978-08-01), Nagaishi

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