Internal-combustion engines – Two-cycle – Rear compression
Patent
1991-02-28
1992-03-03
Okonsky, David A.
Internal-combustion engines
Two-cycle
Rear compression
137855, 123 73V, 123468, F02B 3304
Patent
active
050922882
ABSTRACT:
In a two cycle internal combustion engine (10), a reed block (52) has a fuel spray rail flow passage (72) integrally formed therein and supplying fuel atomized by combustion air flow therepast. The fuel spray rail passage extends longitudinally (78) along the apex (60) of a V-shaped reed block (52) at the downstream end thereof, and has discharge ports (74, 76) formed by openings through the sides (56, 58) of the V-shaped member, which ports (74, 76) are opened and closed by the downstream ends of the reed valve flaps (62, 64). When the reed valves are open, air flows across and parallel to the face of the discharge port opening and perpendicular to the direction of fuel flow out of such openings, for enhanced atomization of the fuel. When the reed valves are closed, the downstream ends of the reed valve flaps engage the reed block sides and cover and close the discharge ports such that fuel is blocked from draining into the crankcase.
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Brunswick Corporation
Okonsky David A.
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