Power plants – Internal combustion engine with treatment or handling of... – Common receiver having inlets from plural cylinder
Patent
1989-04-21
1990-11-27
Hart, Douglas
Power plants
Internal combustion engine with treatment or handling of...
Common receiver having inlets from plural cylinder
60272, 60282, F01N 710, F01N 716
Patent
active
049726749
ABSTRACT:
A heat insulating ceramic insert-cast article for an internal combustion engine, comprising a ceramic liner and a metallic member enclosing an outer periphery of the ceramic liner. The ceramic liner is adapted to contact exhaust gases. A joint boundary between the ceramic liner and the metallic member is constituted by contact faces at which the ceramic liner contacts the metallic member and heat insulating air layers at which the ceramic liner and the metallic member do not contact each other. A process for producing such a heat insulating ceramic insert-cast article is also disclosed. First, the outer periphery of the ceramic liner is covered with the heat insulating layer which is partially formed with cuts, and then the ceramic liner is enclosed with a molten metal in the state that the ceramic liner is covered with the layer. Thus, the metal flows into the cuts and solidifies therein to form contact faces between the ceramic liner and the metal, while portions at which the metal does not flow inside due to the pressure of the layer are converted to heat insulating layers.
REFERENCES:
patent: 3750403 (1973-08-01), Deutschmann
patent: 3892907 (1975-07-01), Niimi
patent: 3919755 (1975-11-01), Daneko
patent: 4604779 (1986-08-01), Narita
Hamanaka Toshiyuki
Harada Takashi
Yamada Shunichi
Hart Douglas
NGK Insulators Ltd.
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