Internal-combustion engines – Lubricators – Crankcase – pressure control
Reexamination Certificate
2011-06-28
2011-06-28
McMahon, M. (Department: 3783)
Internal-combustion engines
Lubricators
Crankcase, pressure control
Reexamination Certificate
active
07966988
ABSTRACT:
Periodically heating a soot containing engine lubricant to a temperature in the range of about 115° C. to about 150° C. is effective in controlling soot induced viscosity increase of the lubricant. The period at which heating is conducted may be a function of the number of hours the engine has been operated or it may be based on the oil condition.
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Conti Riccardo
Kennedy Steven
Torkelson Jeffrey R.
Weldon Brandon T.
ExxonMobil Research and Engineering Company
Katz Gary
McMahon M.
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