F - Mech Eng,Light,Heat,Weapons – 02 – F
Patent
F - Mech Eng,Light,Heat,Weapons
02
F
121/89
F02F 3/28 (2006.01) F02F 3/00 (2006.01) F02F 3/12 (2006.01) F02F 7/00 (2006.01) F16J 1/00 (2006.01) F02B 3/06 (2006.01)
Patent
CA 1078274
?? ABSTRACT The disclosure illustrates an insulated composite piston comprising a crown of ceramic or other heat resistant material secured to an aluminum piston body by a bolt of temperature resistant alloy. A low conductivity interface between the crown and the body is provided by a series of stacked discs having low effective thermal conductivity. The relative thermal expansion of the parts is compensated for by bellville washers on the bolt. The above arrangement insulates the crown from the piston body thereby minimizing the temperature gradient across the crown so that its temperature can be maintained as high as necessary to increase efficiency and minimize noxious emissions.
294075
Johnson Kenneth A.
Stang John H.
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