Abstract: A fluid-mechanical variable Venturi metering system having a contoured moveable element in an intake casing to an internal combustion engine whose shape and Venturi air passage(s) results in automatic shifting of the moveable element by aerodynamic force as a function of the mass-volume of the air passing through which with levers produces amplified outputs of displacement, countervailing force and differential air velocity pressure (Venturi vacuum) proportional thereto and compensating for temperature, moisture content and pressure whereby an output or combination of outputs or transducing of outputs applied to fuel control devices and systems provides air-fuel mixtures in optimum ratio for the entire speed-load range of the modern engine for naturally aspirated and supercharged Fuel Injection and Carbureted Injection systems.

Abstract: A fuel injection system for a spark-ignition internal combustion engine in which combustion air is fed through an air flow meter to produce an input force whose strength is proportional to the mass-volume of the air. This input force actuates the valve member of a valve mechanism to whose input is supplied fuel at constant pressure, the valve member being displaced to an extent determined by the strength of the input force. The valve mechanism includes a fuel output chamber in which the pressure of fuel therein is a function of valve member displacement, this pressure being applied as a countervailing force to the valve member to cause it to assume a null-balance position at which the resultant mean fuel pressure yielded by the output chamber is proportional to the mass-volume of the combustion air, thereby attaining optimum fuel-air ratio conditions throughout a broad operating range.

Abstract: A flow regulating carburetor having a movable control element operating within the throat of a venturi air passage, the element being automatically displaced to vary the effective size of the throat as a function of the mass-volume of the air stream flowing through the passage. This produces a velocity-pressure differential acting automatically to regulate the quantity of fuel induced through a fuel tube communicating with the throat and intermingling with the air stream to provide a ratio of air-to-fuel representing the optimum value for the prevailing condition of engine speed and load throughout the entire engine operating range, thereby effecting a marked improvement in fuel economy and reducing the emission of pollutants.

Abstract: A fluidic control system provided with a variable Venturi structure whose movable element is automatically shifted as a function of the mass-volume of fluids passing through the structure to produce an output which depends on the adjusted position of the element or the resultant velocity-pressure. The system is applicable to the metering, proportioning and blending of fluids. In the context of an internal combustion automotive engine in which the variable Venturi structure acts to intermingle combustion air and fuel prior to ignition, the system provides a stoichiometric or other ratio of air-to-fuel that represents the optimum value for the prevailing condition of engine speed and load throughout a broad operating range, thereby effecting a marked improvement in fuel economy and reducing the emission of pollutants.

Abstract: A closed-loop fluidic control servo system for a vehicle having an internal combustion engine provided with a variable Venturi carburetor having an axially-shiftable spool operated by a vacuum motor. The system acts automatically through the motor to maintain the ratio of fuel-to-air supplied by the Venturi carburetor to the intake manifold of the system at the optimum value during all prevailing conditions of engine speed and load encountered in vehicular operation. The system includes a vacuum amplifier coupled to the intake manifold and responsive to a differential vacuum signal developed between the pressures existing at the inlet and throat of the Venturi to produce a proportionally amplified vacuum which is derived from the intake manifold vacuum and is a function of the vacuum signal. The proportionally amplified vacuum serves to energize the vacuum motor to shift the axial position thereof in a direction and to an extent bringing about the desired fuel-to-air ratio.

Abstract: An automatic control system for supplying a fuel-air mixture to an internal combustion engine through a Venturi structure conducting throttle-controlled incoming air to the intake manifold of the engine. Coaxially disposed in the casing of the structure is a cylindrical booster whose internal surface has a Venturi configuration to define a primary passage. Interposed between the booster and a ring having an external Venturi configuration mounted on the casing in an axially shiftable spool whose internal surface has a Venturi configuration to define a secondary passage having a variable throat between this surface and the spool. A tertiary passage is defined between the outer surface of the spool and the ring, incoming air passing through all three passages.

Abstract: A rotating ring rotary compressor having a driven eccentric so mounted on the drive shaft that its eccentricity is adjustable from a minimum to a maximum, whereby at its maximum extension it presses the roller surface against the stator surface to cause it to roll around the stator with zero clearance and positive hermetic sealing. Because the extensible eccentric mounting is spring-biased, the resultant working pressure is controlled by the contribution of the spring bias to centrifugal force and any excess of pressure or interference causes the roller to reduce eccentricity, thereby internally bypassing excess pressure or overcoming interference.

Abstract: An automatic control system for supplying a fuel-air mixture to an internal combustion engine including a variable-Venturi carburetor. Air is fed into the input of the Venturi, the air passing through the throat thereof whose effective area is adjusted by a mechanism operated by a servo motor. Fuel is fed into the input of the Venturi from a fuel reservoir through a main path having a fixed orifice and an auxiliary path formed by a metering valve operated by an auxiliary fuel-control motor. The differential air pressure developed between the inlet of the Venturi and the throat thereof is sensed to produce an air-velocity command signal that is applied to a controller adapted to compare the command signal with the servo motor set point to produce an output for governing the servo motor to cause it to seek a null point, thereby defining a closed process control loop.

Abstract: A carburetion system for supplying a fuel-air mixture to an internal combustion engine in a manner maintaining a desired ratio of fuel-to-air under varying conditions of operation to improve fuel economy and minimize the emission of pollutants. The system includes a carburetor having a tubular variable-Venturi structure whose effective cross-sectional areas are circular or annular, the converging inlet to the throat of the Venturi and the diverging outlet thereof having a configuration free of discontinuities regardless of the effective throat area. The Venturi areas and throat are varied by a control motor as a function of air flow that changes with engine demand. The fuel fed into the carburetor at the varying throat is metered by a valve whose effective orifice is varied by the motor concurrently with the change in Venturi throat area to maintain the desired ratio.