F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
115/3, 123/95
F04B 43/06 (2006.01) F01M 3/00 (2006.01) F02B 61/04 (2006.01) F02B 75/02 (2006.01)
Patent
CA 1334499
A marine propulsion system (200) having an outboard two cycle internal combustion engine (212) has a modified oil- fuel mixer (2,602) preventing excess oil in the mixture as fuel runs out. The modified mixer includes an auxiliary chamber (602) having a fuel inlet (604) receiving fuel from the working chamber (22) of the mixer below a given level, a vapor inlet (606) receiving fuel vapor or air from the working chamber above the given level, and a vapor outlet (608) exhausting the vapor. When the fuel tank (5) runs dry, air is drawn through a transfer passage (38) in the mixer to one side of the moveable diaphragm (24), and fuel pump (11) suction is applied to both sides of the diaphragm to halt movement thereof and stop further pumping of oil from the oil tank (7) to the engine. The invention also enhances accuracy of the oil-fuel mixture ratio during normal operation.
605363
Brunswick Corporation
Mitchell Richard J.
LandOfFree
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