High-efficiency, low-pollution engine

Details High-efficiency, low-pollution engine High-efficiency, low-pollution engine

1995-08-16

1997-06-17

Okonsky, David A.

Internal-combustion engines

Two-cycle

Whirl through piston-controlled ports

123 73C, 123 4182A, 1231932, F02B 1700

Patent

active

056387792

ABSTRACT:
An internal combustion engine of either two-cycle or four-cycle construction including a block having at least one cylinder bore therein having sidewalls carrying a liner of a structural fiber reinforced ceramic matrix composite material disposed in sealed fiber reinforced sliding relationship within the cylinder bore, and a cylinder head sealing atop end of the cylinder bore to form a closed combustion chamber in combination with the piston. The cylinder head also has the structural fiber reinforced ceramic matrix composite material disposed on an inner surface thereof facing the combustion chamber. The preferred engine is a two-cycle engine having an externally scavenged intake system and an oil sump lubricating system thereby eliminating the need to separately mix or inject lubricating oil. Higher operating temperatures and closer tolerances allow higher fuel efficiency and less pollutant production. A preferred structural fiber reinforced ceramic matrix composite material and the method of making same is also disclosed.

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