Fuel puddle bleed shut-off for fuel injected two cycle engine

Details Fuel puddle bleed shut-off for fuel injected two cycle engine Fuel puddle bleed shut-off for fuel injected two cycle engine

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F02B 33/04 (2006.01) F02B 33/28 (2006.01) F02M 33/04 (2006.01) F02M 37/00 (2006.01) F02M 55/00 (2006.01) F02M 69/10 (2006.01) F02B 1/04 (2006.01) F02B 75/02 (2006.01)

Patent

CA 1324039

ABSTRACT A marine fuel injection system for a two cycle crankcase compression internal combustion engine includes a puddled fuel return line between the crankcase and a vapor separator. A shut-off valve in the puddled fuel return line is closed at high engine speed to prevent the flow at a high rate of a substantially gaseous medium to the vapor separator, to prevent fuel foaming otherwise caused thereby in the vapor separator and which would pass through the vapor vent line to the induction manifold, causing an over-rich condition at high engine speed. At low engine speed, the shut-off valve is open, permitting flow of puddled fuel to the vapor separator, which flow is substantially more liquidic and at a lower rate.

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