Carburetor for internal combustion engines

Patent · Tue Sep 23 04:00:00 EDT 1986

OSTI ID:5116250

Peterson, R W

This patent describes a carburetor for an internal combustion engine which includes a source of fuel and combustion chambers, the carburetor including a body surrounding an air passage, a venturi section in the air passage and throttle means for controlling the passage of air through the air passage, the carburetor further comprising a primary fuel circuit having a first metering valve for introducing fuel from the fuel source directly into the air passage to produce a relatively lean fuel-to-air mixture, first operating means for operating the first metering valve in conjunction with the throttle means whereby each incremental movement of the throttle means produces a proportional incremental operation of the first metering valve, a secondary fuel circuit having a second metering valve for introducing additional fuel from the fuel source directly into the air passage for enriching the fuel-to-air mixture, and second operating means for operating the second metering valve in conjunction with the air pressure in the venturi section in the air passage, the second operating means being adapted to be responsive to the air pressure in the venturi section and to produce a proportional incremental operation of the second metering valve in response to incremental changes in the air pressure in the venturi section.

• Assignee: NOV; NOV-85-026082; EDB-86-183209
• Patent Number(s): US 4613469
• OSTI ID: 5116250
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
AIR FLOW
AUTOMOTIVE FUELS
CARBURETORS
COMBUSTION CHAMBERS
CONTROL EQUIPMENT
DESIGN
ENGINES
EQUIPMENT
FLOW REGULATORS
FLOWMETERS
FLUID FLOW
FUEL SYSTEMS
FUEL-AIR RATIO
FUELS
GAS FLOW
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MEASURING INSTRUMENTS
METERING
METERS
OPERATION
PRESSURE EFFECTS
VALVES
VENTURI TUBES