Fuel economizer system for internal combustion engines

Patent · Tue Feb 05 04:00:00 EST 1980

OSTI ID:5532613

Driggers, V J

A fuel economizer system for an internal combustion engine is disclosed that is comprised of a fuel supply tank, a main fuel supply line connecting the tank to the carburetor of the engine, and a fuel pump in the supply line for delivering fuel to the carburetor, an adjustable fuel metering valve positioned in the fuel supply line between the fuel pump and the carburetor, and means for automatically adjusting the metering valve in response to changes in load conditions on the engine to provide minimum fuel pressure and fuel to the carburetor inlet during idle and no-load conditions, while increasing the fuel pressure and amount of fuel supplied to the carburetor in response to increases in the load condition on the engine. During operation of the engine, the position of the metering valve is automatically adjusted by a diaphragm motor which is operatively connected to the intake manifold of the engine whereby changes in vacuum pressure in the intake manifold move the valve to increase or decrease the supply of fuel to the carburetor. The metering valve includes a rotary valve plug having a generally rectangular fuel passageway therethrough which is rotatably positioned from a full open condition during acceleration and heavier load conditions on the engine, to a maximum, partially closed condition during idle and minimum load conditions on the engine.

• Assignee: IFI; EDB-82-071636
• Patent Number(s): US 4186707
• OSTI ID: 5532613
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320203 -- Energy Conservation
Consumption
& Utilization-- Transportation-- Land & Roadway
33 ADVANCED PROPULSION SYSTEMS
330101* -- Internal Combustion Engines-- Spark-Ignition
AUTOMOTIVE FUELS
CARBURETORS
CONTROL
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
FUEL ECONOMY
FUEL SYSTEMS
FUELS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MEASURING INSTRUMENTS
MONITORS
PRESSURE CONTROL