Internal-combustion engines – Two-cycle – Rear compression
Patent
1990-11-20
1992-02-04
Okonsky, David A.
Internal-combustion engines
Two-cycle
Rear compression
123 73PP, F02B 2514
Patent
active
050851802
ABSTRACT:
A two cycle, crankcase compression internal combustion engine which has one or more individually sealed crank chambers defined by one or more crank webs and a transfer passage associated with each chamber formed within the crankshaft body and cylinder block to provide increased flow area for the fuel/air mixture between the induction system and each cylinder. An inner wall forming portion of the crankcase body is expanded outwardly around crank webs and has an inwardly extending member associated with each crank web. A groove is formed in each inwardly extending member and cooperates with each of the outwardly expanding areas to define each of the transfer passages.
REFERENCES:
patent: 3014471 (1961-12-01), Eiler
patent: 3810450 (1974-05-01), Woodhouse
patent: 4178887 (1979-12-01), Iida
patent: 4266514 (1981-05-01), Tyner
patent: 4777913 (1988-10-01), Staerzl et al.
patent: 4779581 (1988-10-01), Maier
patent: 4947807 (1990-08-01), Flaig et al.
patent: 4967704 (1990-11-01), Imaeda
Beutler Ernest A.
Okonsky David A.
Sanshin Kogyo Kabushiki Kaisha
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