Appeal No. 96-3202
Application No. 08/183,464
lubricant being stable to temperatures at about 700°F to
retain a low coefficient of friction and promote rapid
formation of a stable oil film to reduce friction therebetween
in an oil starved environment.
20. A low friction valve train actuating at least one
valve in an internal combustion engine comprising:
a cam shaft having at least one cam; and
a tappet contacting said at least one cam and valve, said
at least one cam and tappet having outer surfaces with an open
porosity and are impregnated with a solid film lubricant
comprised of graphite and at least one of boron nitride and
molybdenum disulfide in either one of a high temperature
polymer and epoxy base, the solid film lubricant has an
affinity for oil and promotes rapid formation of a stable oil
film to reduce friction therebetween.
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