Internal-combustion engines – Particular piston and enclosing cylinder construction – Cylinder detail
Patent
1989-06-01
1990-06-26
Cross, E. Rollins
Internal-combustion engines
Particular piston and enclosing cylinder construction
Cylinder detail
92212, 92160, 277170, 123 74AE, F02F 500
Patent
active
049362690
ABSTRACT:
A method and apparatus for reducing oil consumption and oil deterioration in a reciprocating engine. The engine is provided with ceramic rings and ceramic cylinder linings. Minimal oil lubricant is adsorbed on the surface layer of the rings and liners to form a lubricating boundary-film on the rings and linings. Excess oil lubricant is restricted from entering the piston ring/cylinder lining region to preclude the formation of a hydrodynamic, full film lubricant layer between the rings and linings. Several engine designs are disclosed.
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patent: 2982589 (1961-05-01), Richardson, Jr.
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patent: 3521531 (1970-07-01), Kaesemodel
patent: 4598675 (1986-07-01), Long
patent: 4785720 (1988-11-01), Kojima et al.
Cross E. Rollins
Sisson Thomas E.
Southwest Research Institute
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