Pressurized fuel carburetor for an internal combustion engine

Details Pressurized fuel carburetor for an internal combustion engine Pressurized fuel carburetor for an internal combustion engine

1984-08-06

1987-04-14

Miller, Carl Stuart

Internal-combustion engines

Charge forming device

Fuel injection system

123568, 123516, 261 362, 261 502, F02M 3900

Patent

active

046569871

ABSTRACT:
Disclosed is a pressurized fuel carburetor system for an internal combustion engine. The sole movable component in the air intake passage is an accelerator-actuated throttle valve device operatively associated with a single fuel metering valve and with an automatic manifold pressure sensor operable to enrich and lean the fuel-air mixture. A fuel pressure regulator cooperates with a fuel pump and with a fuel return restricter connected to and governed by changing intake manifold pressure conditions to regulate fuel pressure at the inlet side of the fuel metering valve. A normally closed fuel check valve prevents flow to the fuel metering valve except when the accelerator is depressed. Pressurized fuel is subjected to multiple vaporizing stages including a first stage as it expands in escaping through the metering valve, thence through a set of small ports into a second expansion chamber and thereafter through a multiplicity of jets into flowing air hot exhaust gases in the air intake passage.

REFERENCES:
patent: 3306033 (1967-02-01), Cornelius
patent: 3953547 (1976-04-01), Schoeman
patent: 4206735 (1980-06-01), Miles
patent: 4228777 (1980-10-01), Haase
patent: 4257379 (1981-03-01), Hickling
patent: 4348338 (1982-09-01), Martinez
patent: 4360481 (1982-11-01), Kaufman
patent: 4434110 (1984-02-01), Highfield

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