Carburator/mixing chamber and dual throttle control apparatus for gasoline engine

Patent · Tue Jun 23 04:00:00 EDT 1987

OSTI ID:6341783

Jimenez, M A

A method is described for providing a fuel-air mixture to an intake manifold of an internal combustion engine, the method comprising the steps of: (a) providing a mixing chamber having first, second and third inlet ports and an outlet port each in open communication with the interior of the mixing chamber; positioning the mixing chamber between the base of a conventional carburetor and the inlet of an intake manifold of the engine to allow a mixture of air and a mist of gasoline droplets produced by the carburetor to pass through the first inlet port into the interior of the mixing chamber; to allow gas to flow from the interior of the mixing chamber through the outlet port into the inlet of the intake manifold; (b) completely vaporizing an amount of liquid fuel externally of the mixing chamber and the carburetor; and (c) partially opening a first throttle valve disposed to control flow of gas through the outlet port, while causing a second throttle valve contained in the carburetor to remain in a substantially closed configuration causing the intake manifold to draw the externally vaporized fuel and outside air that does not pass through the carburetor into the interior of the mixing chamber through the second and third inlet ports, respectively. The entire vaporized fuel is mixed with the outside air in the interior of the mixing chamber causing the intake manifold to draw the mixture of air and entirely vaporized fuel through the first throttle valve into the intake manifold while preventing significant amounts of air and fuel mist from passing from the carburetor through the first inlet port into the interior of the mixing chamber. The outside air drawn through the third inlet port does not pass through the carburetor.

• Assignee: NOV; EDB-87-139878; NOV-87-070474
• Patent Number(s): US 4674465
• OSTI ID: 6341783
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
AIR FLOW
CARBURETORS
CONTROL EQUIPMENT
DESIGN
DISPERSIONS
DROPLETS
ENGINES
EQUIPMENT
EVAPORATION
FLOW REGULATORS
FLUID FLOW
FUEL SYSTEMS
FUEL-AIR RATIO
FUELS
GAS FLOW
HEAT ENGINES
INTAKE STRUCTURES
INTERNAL COMBUSTION ENGINES
LIQUID FUELS
MECHANICAL STRUCTURES
MIXERS
MIXTURES
OPERATION
PARTICLES
PHASE TRANSFORMATIONS
POSITIONING
VALVES