Pressurized fuel carburetor for an internal combustion engine

Patent · Tue Apr 14 04:00:00 EDT 1987

OSTI ID:6564457

Arpaia, M A

A pressurized fuel carburetor is described for an internal combustion engine comprising: a main housing provided with an air intake passage equipped with a normally closed throttle valve connected to an accelerator and which intake passage is unobstructed by other movable air flow responsive means; engine manifold pressure sensing means located entirely exteriorly of the intake passage but in communication therewith downstream from the throttle valve means; a single normally fully closed fuel metering valve in communication with the air intake passage downstream from the throttle valve and mechanically connected to a source of pressurized fuel and to the accelerator and to the pressure sensing means. The means is responsive to subatmospheric pressure in the engine fuel intake manifold to open the single fuel valve and maintain a continuous flow of pressurized fuel into the air intake passage via the single fuel metering valve so long as the pressure sensing means senses subatmospheric pressure in the intake manifold. It is also responsive to a change in the intake manifold pressure to adjust the single fuel metering valve automatically to vary fuel flow into the intake passage to accommodate changing engine power output demand and to fully close the single fuel metering valve when the intake manifold pressure rises substantially to atmospheric pressure.

• Assignee: NOV; EDB-87-103013; NOV-87-059038
• Patent Number(s): US 4656987
• OSTI ID: 6564457
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
AIR FLOW
ATMOSPHERIC PRESSURE
AUTOMOTIVE FUELS
CARBURETORS
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FUEL GAGES
FUEL SYSTEMS
FUELS
GAS FLOW
HEAT ENGINES
INTAKE STRUCTURES
INTERNAL COMBUSTION ENGINES
MEASURING INSTRUMENTS
MECHANICAL STRUCTURES
PRESSURE GAGES
PRESSURE MEASUREMENT
PRESSURIZING
SPEED REGULATORS
VALVES