Internal-combustion engines – Two-cycle – Whirl through piston-controlled ports
Patent
1985-12-17
1989-02-07
Okonsky, David A.
Internal-combustion engines
Two-cycle
Whirl through piston-controlled ports
123 73PP, 164 45, 164235, B22C 702
Patent
active
048024473
ABSTRACT:
A polystyrene foam pattern (10) is provided for the cylinder block of a crankcase compression two-cycle engine having transfer passages (15) formed in the block. The pattern includes a head-end component (12) and a crankcase end component (11) mating with each other. The mating surfaces extend through the transfer ports (14), transfer passages (15), and exhaust ports (16) to allow the formation of complex passages with die cast pattern components.
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Brunswick Corporation
Okonsky David A.
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