Low cost insertable type port liner

Details Low cost insertable type port liner Low cost insertable type port liner

F - Mech Eng,Light,Heat,Weapons

01

N

172/1, 26/187

F01N 3/02 (2006.01) F02B 77/11 (2006.01)

Patent

CA 1120403

LOW COST INSERTABLE TYPE 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 intermediate 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 be 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.

310617

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