Internal-combustion engines – Charge forming device – Crankcase vapor used with combustible mixture
Patent
1985-02-22
1986-06-10
Moy, Magdalen Y. C.
Internal-combustion engines
Charge forming device
Crankcase vapor used with combustible mixture
123525, 123590, F02B 2506
Patent
active
045936714
ABSTRACT:
A unique supplemental carburetion device for internal combustion engines producing a primary source of fuel-air mixture for use at idle and low engine speeds resulting in decreased fuel consumption and exhaust emissions comprising a fuel reservoir chamber joined to a source of liquid fuel and determinate fluid communication with a fuel metering chamber. The metering chamber preferably is vented to ambient air pressure contains diaphragm valve means for controlling fluid flow into the metering chamber. Liquid fuel from the metering chamber flows into a nebulizing chamber and is nebulized by interaction with a stream of ambient air or blow-by gases. The fuel-air stream is passed into a venturi throat and vaporized and then passed into an expansion chamber where the stream is expanded under low static gas pressure to a mixture having a pre-determined fuel to air ratio. The mixture exits the device and is delivered into downstream portions of the carburetor throat.
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