Insulated port liner assembly

Details Insulated port liner assembly Insulated port liner assembly

1994-02-24

1997-01-14

McCamish, Marion E.

Stock material or miscellaneous articles

Hollow or container type article

Glass, ceramic, or sintered, fused, fired, or calcined metal...

428 346, 428 347, 428 362, 428 3691, 29888061, 60272, 60323, 138145, 138146, 138149, 138DIG10, 164 98, B32B 108, F01N 710, D03D 4926

Patent

active

055937454

ABSTRACT:
The design and construction of past exhaust port liners with heat insulation capabilities have had to become more simple in order to reduce costs. However, less costly exhaust port liners may have inferior heat insulation capabilities. The present invention overcomes this and other problems with a means for encapsulating an insulating layer of material. The encapsulating means is composed of fiberglass cloth with the ability to withstand high temperatures. A blanket is formed when the fiberglass cloth encapsulates the insulating layer. The blanket is stitched in a quilted pattern to form a plurality of individual pockets. The blanket is wrapped around a ceramic body of a port liner. The quilted stitching pattern, due to separating the insulating layer into the plurality of individual pockets, protects the pockets individually. If damage should occur to one of the plurality of pockets, the insulating layer would remain intact within the remaining plurality of pockets. Therefore, the surrounding pockets retain their individual insulating layer increasing the durability of the blanket and prolonging the life of the insulating layer. The ability to protect the insulating layer from catastrophic damage increases efficiency and decreases the rate of heat loss. The ability to decrease the rate of heat loss increases engine efficiency.

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