Internal-combustion engines – Charge forming device – Liquid fuel evaporating by extended fuel film
Patent
1978-09-21
1981-05-19
Lazarus, Ronald H.
Internal-combustion engines
Charge forming device
Liquid fuel evaporating by extended fuel film
123557, 261144, 261145, F02M 3100
Patent
active
042678021
ABSTRACT:
A fuel delivery system for an internal combustion engine, including a vaporizing chamber for combining liquid fuel and air to produce a vaporized fuel and air mixture, a vapor expander which communicates with the chamber for expanding and further vaporizing the mixture, and a metering device which communicates with the expander and with the engine for supplying engine vacuum to the system and controlling the amount of the mixture which is supplied to the engine. The vaporizing chamber includes a reservoir for storing a quantity of liquid fuel, an air inlet, a jet which sprays liquid fuel into the chamber, and a reservoir heater which heats the liquid fuel in the reservoir. The vapor expander includes a tubular passage communicating between the chamber and the metering device and a heating conduit coiled around the tubular passage to carry heated engine coolant and transfer heat to the mixture. The vapor expander also includes a plurality of perforated baffles mounted within the tubular passage to further promote the transfer of heat to and the vaporization of the mixture. The metering device includes an air inlet for providing additional air to the mixture, a mixture outlet for conveying the mixture to the engine, a venturi chamber between the inlet and the outlet for increasing the velocity of flow of the mixture, a choke valve mounted within the air inlet and adapted to control the flow of air through the inlet, a mixture inlet opening into the venturi chamber and adapted to communicate with the vapor expander, and a mixture control valve to regulate the amount of the mixture conveyed to the engine.
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patent: 1255077 (1918-01-01), Brown
patent: 1260388 (1918-03-01), Johnean
patent: 1365651 (1921-01-01), Beaumont
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patent: 2659667 (1953-11-01), Bosdet
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patent: 4089314 (1968-05-01), Bernecker
patent: 4106457 (1978-08-01), Totten
Dodson Gordon O.
Lazarus Ronald H.
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