Internal-combustion engines – Charge forming device – Heating of combustible mixture
Patent
1980-11-25
1982-05-18
Lazarus, Ronald H.
Internal-combustion engines
Charge forming device
Heating of combustible mixture
261 41D, 261144, F02M 3100
Patent
active
043299644
ABSTRACT:
A carburetion system for metering liquid fuel for supply to an internal combustion engine. Liquid fuel is metered in a single bifurcated metering system by being flowed through a calibrated orifice in response to a proportional pressure reduction which is generated as the result of the summing of a venturi pressure reduction and an auxiliary pressure reduction. Metered liquid fuel is delivered through one branch of the metering system to the engine intake air downstream of the throttle at small and medium engine loads, and through the other branch to the engine intake air upstream of the throttle at large engine loads. Transitioning of fuel flow between the branches is automatic and occurs in response to pressure differences within the system. Fuel delivered to the engine intake air downstream of the throttle valve may be heated or otherwise treated to improve liquid fuel atomization or vaporization.
REFERENCES:
patent: 1732531 (1929-10-01), Plaut
patent: 1962010 (1977-09-01), Newbury
patent: 2658734 (1953-11-01), Henning
patent: 2793633 (1957-05-01), Hestler
patent: 2918046 (1959-12-01), Teagarden
patent: 3139874 (1964-07-01), Krein
patent: 3215417 (1965-11-01), Whitemore
patent: 3453994 (1969-07-01), Nutten
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