Low cost cast-in-place port liner

Details Low cost cast-in-place port liner Low cost cast-in-place port liner

F - Mech Eng,Light,Heat,Weapons

01

N

172/1, 26/187

F01N 3/02 (2006.01) B22D 19/04 (2006.01)

Patent

CA 1120404

LOW COST CAST-IN-PLACE PORT LINER ABSTRACT OF THE DISCLOSURE A method and apparatus for insulating the exhaust passage of an internal combustion engine is disclosed. A three-zone liner assembly is provided with an outer zone comprised of a room temperature vulcanizing silicone sleeve, an inner zone comprised of a stamped and seam welded high strength Al-Cr-steel alloy, and an inter mediate zone consisting of a ceramic wool mat. The liner assembly is supported or enclosed within a mild carbon sheet metal sleeve which in turn may he bonded to the engine passage wall by use of a room-temperature- vulcanized silicone if of the insert type, or by fusion bonding during casting if of the cast-in-place type.

310623

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