Abstract: A method of detecting a fault in a bleed air system of an aircraft having multiple engines is disclosed. The method includes transmitting a bleed air flow rate from multiple engines, determining a difference between the transmitted bleed air flow rates to define a difference value, and determining, by a controller, a fault condition with the bleed air system based on the difference value.

Abstract: An improved throttle body includes an offset axis drum valve and shaped throat. The offset axis and shaped throat provide gradual initial opening for better throttle control and the drum valve includes a lower face matching the profile of the air path through the throttle body when rotated to a fully open throttle position, providing an optimal flow at full throttle. The offset axis drum further includes a slightly decreasing radius. As the drum opens, the surface of the drum retreats from the throttle body wall providing clearance for dusty environments and reducing tolerances for reduced manufacturing cost. A fuel injector pocket position provides a spray pattern aligned with an initial air flow as the throttle body opens providing better mixing at part throttle. The throttle body further creates a cavity under the drum in the closed position providing an increased volume in the intake tract which improves throttle response.

Abstract: A batch carbonation apparatus includes a housing defining a vessel cavity. The housing includes an agitation mechanism. The pressure vessel includes a cap that has a CO2 inlet and a CO2 outlet is provided. The pressure vessel also includes a seal. The pressure vessel is moveable into an out of the vessel cavity. A locking mechanism is provided and is attached to the agitation mechanism to removably lock the cap and seal relative to the pressure vessel. A CO2 source is connected to a plurality of valves where each valve has a differing pressure. A selection toggle is attached to the housing. A control mechanism is coupled to the plurality of valves. A user selects a desired carbonation level using the selection toggle and CO2 is introduced to the pressure vessel at a specified pressure wherein the agitation mechanism agitates liquid within the pressure vessel forming a carbonated beverage having a selected carbonation level. Also disclosed is a process of forming a carbonated beverage in a batch.

Abstract: A carburetor includes a valve mechanism, and a needle jet extending in an up and down direction. Also included is a jet needle provided to a sliding throttle valve disposed in an air intake tube and inserted into the jet needle. The valve mechanism includes a valve body, which has a plate shape and which is moved by the flow of the fuel. When a motorcycle lands on the ground after the motorcycle jumps while running, the fuel-in-jet, that is, the fuel in the needle jet, tends to accelerate downwardly. The valve mechanism prevents a downward reverse flow of the fuel-in-jet on which such downward acceleration acts. The resulting configuration prevents temporary production of a lean air-fuel mixture, which may possibly be produced when the fuel in the needle jet has accelerated downwardly.

Abstract: A carburetor includes a main body defining a bore, a main passage and a venturi defined within the bore, and a fuel nozzle carried by the main body and including a fuel nozzle outlet communicating with the venturi. The carburetor may also include a valve member translatable across an axis of the bore, such that in a closed state, the valve member closes the main passage but maintains the venturi at least partially open. The carburetor may also include a needle valve disposed at an end of the fuel nozzle substantially opposite of the fuel nozzle outlet to variably control flow of fuel into a fuel nozzle inlet, and a needle valve transmission may be coupled between a throttle shaft and the needle valve to convert rotation of the throttle shaft to translation of the needle valve.

Abstract: A carburetor has an air intake passage, a fuel passage, a fuel nozzle in communication with the fuel passage and having an opening through which fuel flows, a first valve in communication with the air intake passage and being movable between first and second positions, and a second valve in communication with the fuel nozzle and also being movable between first and second positions to vary the effective flow area of the fuel nozzle. The fuel nozzle is preferably carried by a tube fitted sealably in a bore being in communication with the fuel passage. The opening is defined by the tube and is preferably elongated, extending axially with respect to the tube. A needle of the second valve moves axially within the tube to variably obstruct the opening to control fuel flow. Preferably, a method of manufacturing the tube utilizes a circular cutting tool which plunges into the tube cutting a slit as the opening having a sharp peripheral edge for atomizing the fuel.

Abstract: A flow rate control mechanism is provided to a low-speed fuel system that is independent from the main fuel system of a carburetor. The mechanism causes the valve element to move in a linear fashion by means of a cam coupled to the throttle stem. The mechanism increases the effective cross-sectional area of the low-speed fuel channel as the throttle valve opens from the idle position to the maximum degree of opening until the point in time at which the main fuel begins to flow, and thereafter causes the low-speed fuel flow rate to decrease and become zero in the high-output region. The transition from low-speed fuel to main fuel is made smooth, ensuring higher output and a stable fuel flow rate in the high-output region.

Abstract: A carburetor for an internal combustion engine includes an intake channel section (2) as well as a throttle element journalled in the intake channel section (2). The throttle element is adjustable between a full-load position (25) and an idle position (26). A pump (20, 30) is provided for additional fuel metering and this pump includes a pumping chamber (24, 34) and a pump piston (21, 31) guided in the pumping chamber (24, 34). The position of the pump piston (21, 31) is coupled to the position of the throttle element. To ensure an optimal supply of the internal combustion engine with fuel in each operating state, the pump piston (21, 31) is so coupled to the throttle element that fuel is pumped from the pumping chamber (24, 34) into the intake channel section (2) when there is a displacement of the throttle element from the full throttle position (25) into the idle position (26).

Abstract: The present invention facilitates the stabilization of the fuel flow rate in a single fuel system carburetor in which bleed air, mixed with fuel, is controlled by a metering needle moving in response to the movement of a throttle valve and the mixture is discharged into an intake channel. The present invention is directed to a carburetor in which an effective surface area of a metering hole is adjusted by a metering needle moving in response to the movement of a throttle valve, and the fuel introduced into a mixing chamber from a constant-fuel chamber under flow rate control with a metering hole is mixed with bleed air and discharged into an intake channel from a nozzle orifice. The mixing chamber has a volume providing for absorption and relaxation of changes in the negative pressure acting upon the nozzle orifice, the fuel is sucked in under stabilized negative pressure, and the air-fuel mixture with a preset air/fuel ratio is supplied over the entire operation range of the engine.

Abstract: Carburetor for an internal combustion engine showing a suction port (1) which is in connection with the combustion chamber of the motor and which is fed with liquid fuel via a nozzle (3) and a fuel channel (3.1), which leads into the suction port (1). A linearly movable valve needle (5) is arranged to extend into the fuel channel (3.1) mainly perpendicular to its longitudinal direction and to open or close this, whereby the suction port (1) is possible to throttle down or close with a throttle (4) which is movable between an open position and a closed position. The valve needle is in connection with a maneuver arm (6), which in turn is in connection with the throttle (4) and is arranged to open the nozzle (3) when the throttle (4) is opened and to close when the throttle (4) is closed.

Abstract: The present invention facilitates increased output, decreased size, and simplified design and manufacture for a carburetor system in which a metering pin, which moves on a throttle valve, controls the fuel flow rate for a single fuel system. A carburetor of the present invention comprises a butterfly-like throttle valve on an air intake pathway with a nearly uniform diameter along its entire length, and a fuel nozzle positioned on the downstream side thereof. A metering pin retained by an actuating member that reciprocates linearly and remains in constant contact with a cam face of a cam member located on a valve stem. Fuel supplied to the air intake pathway from a constant fuel chamber via the fuel nozzle is controlled according to the opening and closing of a throttle. The metering pin by means of a cam controls the volume of the fuel flow rate at a desired stroke set irrespective of the opening and closing movement of the throttle valve.

Abstract: The present invention facilitates increased output, decreased size, and simplified design and manufacture for a carburetor system in which a metering pin, which moves on a throttle valve, controls the fuel flow rate for a single fuel system. A carburetor of the present invention includes a butterfly-like throttle valve on an air intake pathway with a nearly uniform diameter along its entire length, and a fuel nozzle positioned on the downstream side thereof. A metering pin retained by an actuating member that reciprocates linearly and remains in constant contact with a cam face of a cam member located on a valve stem. Fuel supplied to the air intake pathway from a constant fuel chamber via the fuel nozzle is controlled according to the opening and closing of a throttle. The metering pin by means of a cam controls the volume of the fuel flow rate at a desired stroke set irrespective of the opening and closing movement of the throttle valve.

Abstract: The present invention facilitates the stabilization of the fuel flow rate in a single fuel system carburetor in which bleed air, mixed with fuel, is controlled by a metering needle moving in response to the movement of a throttle valve and the mixture is discharged into an intake channel. The present invention is directed to a carburetor in which an effective surface area of a metering hole is adjusted by a metering needle moving in response to the movement of a throttle valve, and the fuel introduced into a mixing chamber from a constant-fuel chamber under flow rate control with a metering hole is mixed with bleed air and discharged into an intake channel from a nozzle orifice. The mixing chamber has a volume providing for absorption and relaxation of changes in the negative pressure acting upon the nozzle orifice, the fuel is sucked in under stabilized negative pressure, and the air-fuel mixture with a preset air/fuel ratio is supplied over the entire operation range of the engine.

Abstract: Carburetor for an internal combustion engine showing a suction port (1) which is in connection with the combustion chamber of the motor and which is fed with liquid fuel via a nozzle (3) and a fuel channel (3.1), which leads into the suction port (1). A linearly movable valve needle (5) is arranged to extend into the fuel channel (3.1) mainly perpendicular to its longitudinal direction and to open or close this, whereby the suction port (1) is possible to throttle down or close with a throttle (4) which is movable between an open position and a closed position. The valve needle is in connection with a maneuver arm (6), which in turn is in connection with the throttle (4) and is arranged to open the nozzle (3) when the throttle (4) is opened and to close when the throttle (4) is closed.

Abstract: The present invention facilitates the stabilization of the fuel flow rate in a single fuel system carburetor in which bleed air, mixed with fuel, is controlled by a metering needle moving in response to the movement of a throttle valve and the mixture is discharged into an intake channel. The present invention is directed to a carburetor in which an effective surface area of a metering hole is adjusted by a metering needle moving in response to the movement of a throttle valve, and the fuel introduced into a mixing chamber from a constant-fuel chamber under flow rate control with a metering hole is mixed with bleed air and discharged into an intake channel from a nozzle orifice. The mixing chamber has a volume providing for absorption and relaxation of changes in the negative pressure acting upon the nozzle orifice, the fuel is sucked in under stabilized negative pressure, and the air-fuel mixture with a preset air/fuel ratio is supplied over the entire operation range of the engine.

Abstract: The present invention facilitates increased output, decreased size, and simplified design and manufacture for a carburetor system in which a metering pin, which moves on a throttle valve, controls the fuel flow rate for a single fuel system. A carburetor of the present invention comprises a butterfly-like throttle valve on an air intake pathway with a nearly uniform diameter along its entire length, and a fuel nozzle positioned on the downstream side thereof. A metering pin retained by an actuating member that reciprocates linearly and remains in constant contact with a cam face of a cam member located on a valve stem. Fuel supplied to the air intake pathway from a constant fuel chamber via the fuel nozzle is controlled according to the opening and closing of a throttle. The metering pin by means of a cam controls the volume of the fuel flow rate at a desired stroke set irrespective of the opening and closing movement of the throttle valve.

Abstract: Carburettor for an internal combustion engine showing a suction port (1) which is in connection with the combustion chamber of the motor and which is fed with liquid fuel via a nozzle (3) and a fuel channel (3.1), which leads into the suction port (1). A linearly movable valve needle (5) is arranged to extend into the fuel channel (3.1) mainly perpendicular to its longitudinal direction and to open or close this, whereby the suction port (1) is possible to throttle down or close with a throttle (4) which is moveable between an open position and a closed position. The valve needle (5) is in connection with a manoeuvre arm (6), which in turn is in connection with the throttle (4) and is arranged to open the nozzle (3) when the throttle (4) is opened and to close when the throttle (4) is closed.

Abstract: The present invention facilitates increased output, decreased size, and simplified design and manufacture for a carburetor system in which a metering pin, which moves on a throttle valve, controls the fuel flow rate for a single fuel system. A carburetor of the present invention includes a butterfly-like throttle valve on an air intake pathway with a nearly uniform diameter along its entire length, and a fuel nozzle positioned on the downstream side thereof. A metering pin retained by an actuating member that reciprocates linearly and remains in constant contact with a cam face of a cam member located on a valve stem. Fuel supplied to the air intake pathway from a constant fuel chamber via the fuel nozzle is controlled according to the opening and closing of a throttle. The metering pin by means of a cam controls the volume of the fuel flow rate at a desired stroke set irrespective of the opening and closing movement of the throttle valve.

Abstract: The present invention facilitates the stabilization of the fuel flow rate in a single fuel system carburetor in which bleed air, mixed with fuel, is controlled by a metering needle moving in response to the movement of a throttle valve and the mixture is discharged into an intake channel. The present invention is directed to a carburetor in which an effective surface area of a metering hole is adjusted by a metering needle moving in response to the movement of a throttle valve, and the fuel introduced into a mixing chamber from a constant-fuel chamber under flow rate control with a metering hole is mixed with bleed air and discharged into an intake channel from a nozzle orifice. The mixing chamber has a volume providing for absorption and relaxation of changes in the negative pressure acting upon the nozzle orifice, the fuel is sucked in under stabilized negative pressure, and the air-fuel mixture with a preset air/fuel ratio is supplied over the entire operation range of the engine.

Abstract: A high performance power valve for a carburetor. The valve is operated by engine manifold vacuum. A housing is provided having an annular flange portion through which extend rectangular outlet apertures for conducting fuel received from a tubular aperture in the housing to a power valve channel restriction. Preferably, four such outlet apertures are disposed at radially symmetrically spaced intervals about the annular flange portion. Preferably, an interior surface of the tubular aperture is radiused substantially where this surface meets the outlet apertures. Preferably, a plunger disposed in the tubular aperture and a seat which the plunger contacts to shut off fuel flow through the valve when the valve is closed are both radiused. The annular flange portion preferably includes one or more “vanes” extending into the tubular aperture.

Abstract: An engine fuel apparatus has a fuel and air mixing passage through which a rich fuel and air mixture is provided to an engine to support the operation of the engine at idle and low speed, low load engine operation, and a pressurized fuel delivery passage provides liquid fuel to a downstream fuel injector for operation of the engine at high load, high speed and wide open throttle engine operating conditions. A shut-off valve prevents the flow of fuel to the mixing passage when a throttle valve therein, which controls engine operation, is opened a predetermined amount from idle to prevent the flow of the fuel into the mixing passage at high load and/or high speed engine operation. Another shut-off valve prevents the flow of pressurized fuel to the downstream fuel injector device when the throttle valve is between idle and a predetermined position off of idle to prevent the flow of pressurized fuel to the fuel injector device under low speed, low load engine operation.

Abstract: A carburetor for an internal combustion engine with an accelerator fuel pump in the carburetor having a piston actuated by a cam on a throttle valve shaft and a ball between them. The axis of a pump chamber in which the piston is slidably received is offset from and eccentric to the axis of rotation of the throttle shaft so that little fuel is supplied to the operating engine by the accelerator pump as the shaft is rotated to move the throttle valve from its idle position to an intermediate position and most of the fuel supplied by the accelerator pump to the engine is delivered as the shaft is rotated to move the throttle valve from the intermediate position to its wide open throttle position.

Abstract: The invention is directed to a membrane carburetor which includes an intake channel having a throttle flap which is pivotally journalled. The carburetor also includes a control chamber from which fuel can be supplied to the intake channel. A valve is mounted in an ancillary channel and a corresponding adjustment of the throttle flap results in dependence upon the opening and closing position.

Abstract: A carburetor with a main fuel jet and a throttle valve in a mixing passage and an apparatus for automatically supplying an enriched fuel and air mixture when an engine is cranked for starting and initial running of the engine upon starting. The apparatus has a mixing chamber with an air intake passage communicating with the mixing passage upstream of the throttle valve, a fuel inlet passage, and an outlet passage for the fuel and air mixture which communicates with the mixing passage downstream of the throttle valve. A valve for controlling the flow of the enriching fuel and air mixture through the outlet passage is manually movable to its opened position where it is releasably retained by an actuator mechanism operably associated with the throttle shaft for releasing and closing the valve when after the engine starts the throttle valve is initially moved from its idle position toward a full open position of the throttle valve.

Abstract: A mixture preparation device for double-feed engines having a body (11) in which two ducts are provided, namely a first duct (12) for air feed to the crankcase and a second duct (13) connected to an injection device. Throttle elements (10, 35) are provided for the two ducts (12, 13). In the second duct (13) connected to the injection device there is provided an air-fuel mixture emission unit (29-34) adjustable in its degree of opening, the opening being controlled by transmission elements (49, 50) operationally connected to a shaft (36, 43) carrying one of the throttle elements (35) positioned within the first duct (12) for air feed.

Abstract: A diaphragm-type carburetor has a high speed adjusting needle and a low speed/idle adjusting needle which are independently supplied with fuel from the metering chamber. The path for fuel to the low speed/idle needle has a valve which is controlled by the angular position of the throttle shaft such that when the throttle shutter is closed the valve is open whereas when the throttle shutter is open the valve is closed.

Abstract: A small engine emissions control system with a float bowl carburetor minimizing CO emissions by tailoring fuel delivery to engine demand over a broad range of operating speeds and conditions, an exhaust gas recirculation valve to reduce NO.sub.x emissions and a pulse valve mixing fresh air with hot exhaust gases to reduce HC and CO emissions.

Abstract: A diaphragm carburetor with both the main metering nozzle and an idle circuit supplied with liquid fuel from the same metering chamber and an accelerator and shut-off assembly in the idle circuit. The assembly has a valve which is open to supply fuel to the idle circuit when the throttle is in a closed idle position and closes off the supply of fuel from the metering chamber as the throttle is moved to its wide open position. Opening of the throttle also actuates a piston to supply additional fuel for accelerating an engine.

Abstract: A system with which a correction of the fuel composition upon a change in the state of load of an internal combustion engine with which a mixture-forming device (4, 6, 8, 9, 11) is associated is constructed in structurally simple manner. The mixture-forming device has a feed unit (6) for the fuel with an inlet-side fuel conveyor line (5) and a discharge-side fuel conveyor line (7) and a movably mounted feed member (18). Depending on the position of the feed member (18), the feed member (18) provides variable fuel passage cross-sections in the feed unit (6). The feed unit is connected via an opening (31) which is closed in sealing fashion by a movable equalization element (33), the equalization space (32) being connected via a branch line (34) to the discharge-side fuel conveyor line.

Abstract: The invention relates to a carburetor for an internal combustion engine and especially for a portable small engine. The carburetor includes a carburetor housing defining an intake pipe and a control chamber which communicates with the intake pipe via intake channels. A fuel-feed line which is closable by an inlet valve opens into the control chamber. The inlet valve includes a valve seat formed in the fuel-feed line and a valve body mounted on a positioning lever which is connected to a membrane defining a wall of the control chamber. The positioning lever can be pivotally actuated to open the inlet valve to admit fuel into the control chamber. An actuating lever is pivotally mounted on the carburetor housing and can be pivoted from a rest position to an active position whereat the actuating lever applies a force against the membrane to displace the latter and pivotally actuate the positioning lever to immediately open the inlet valve when starting the engine.

Abstract: Disturbances can occur in handheld portable tools driven by internal combustion engines because the idle-nozzle system and the main-nozzle system influence each other. The carburetor of the invention prevents this disturbing influence and provides a control of the engine which is proportional to speed. The carburetor includes a control member which closes off the main nozzle during idle operation and the idle nozzle during operation under load in dependence upon the position of the throttle flap.

Abstract: A carburetor comprises a main body portion defining a venturi having an air intake side and an engine outlet side, a throttle shutter mounted within the venturi between the air intake side and the engine outlet side, a fuel chamber for supplying fuel into the venturi via a main discharge port and at least one idle discharge port, the main discharge port opening into the venturi on the air intake side of the throttle shutter, a choke feed passage extending from the fuel chamber to the venturi, the choke feed passage opening into the venturi on the opposite side of the throttle shutter to the main discharge port, and means for selectively opening and closing the choke feed passage.

Abstract: A carburetor includes a metering assembly in which the effective area of the metering orifice varies in direct proportion to movement of a vlave stem. Primary and secondary fuel circuits are controlled by the assembly in response to air flow through the carburetor to maintain an optimum fuel-to-air ratio under various load and atmospheric conditions.

Abstract: Several embodiments of charge forming devices embodying enrichment circuits that provide enrichment substantially only when the engine is running above its idle speed and below a predetermined slow speed so as to improve running without excessive fuel consumption under high speed conditions. In each embodiment, the enrichment circuit includes a port in the induction passage upstream of the idle position of the throttle valve and which is served by a fuel well. In accordance with one embodiment of the invention, the discharge of the enrichment circuit is controlled by a throttle valve position responsive valve. In this embodiment, the throttle valve position responsive valve may comprise the pumping element of the accelerating pump. In other embodiments of the invention, the discharge of the enrichment circuit is controlled by providing restricted communication between the fuel source and the enrichment fuel well.

Abstract: Liquid fuel is converted into gaseous form in an enclosed chamber rotating at high speed (e.g., 10,000 rpm). The fuel is delivered to a surface of a flat disc rotating about an axis perpendicular to the disc at the center. The fuel flows across the disc surface in a thin film to promote evaporation. Any unevaporated liquid fuel is retained by centrifugal force against the peripheral outer wall of the rotating chamber until the liquid completely vaporizes. The evaporated fuel mixes with air flowing into the chamber through an inlet opening opposite the disc evaporating surface. The mixture flows outwardly, around the edge of the disc, then inwardly between the back of the disc and the upstream edge of an annular baffle to exit from the chamber through an outlet opening of significantly smaller diameter than the maximum inner diameter of the chamber as a thorougly mixed dry gaseous combination of fuel and air.

Abstract: Liquid fuel, such as gasoline, is converted into gaseous form in an enclosed chamber rotating at high speed (e.g., 10,000 rpm) and containing a catalyst support material impregnated with 90% cupric chloride and 10% nickel chloride by weight. The converted fuel passes through a microporous (e.g., 40 microns) peripheral wall of the container and then mixes uniformly with air flowing through an annular space surrounding the container to form a combustible mixture.

Abstract: An internal combustion engine driven by a gaseous fuel, with quantity regulation in a lower load range and quality regulation in an upper load range. A gas pressure regulator is provided for controlling a gas flow to an air-gas mixer, with a throttle valve actuatable by an accelerator pedal being arranged in an intake line downstream of the air-gas mixer, whereby the gas pressure regulator is movable in a closing direction through a control line, by a diaphragm by vacuum prevailing in the intake line in a vicinity of the throttle valve. A control valve, influenced by the accelerator in the quality control range, is disposed in a control line. The control line branches off the intake line upstream of the throttle valve or off the air-gas mixer. A throughput or through-flow cross section in the control valve decreases with increasing loads in a direct relationship to a position of the accelerator until the control valve closes at full load.

Abstract: A metering device for a fuel control system includes a block having a pair of parallel transverse bores which are interconnected to a pair of parallel longitudinal bores so as to provide a plurality of passageways in which appropriate valves may be placed.

Abstract: A fuel control system for gasoline operated vehicles includes a metering device connected to the fuel line for controlling the rate of flow to the carburetor to permit a normal rate under ordinary driving conditions and an increased rate of flow under accelerated conditions with a filter being connected to the fuel line upstream from the metering device to prevent blockage of the main metering valve in the metering device and a second filter downstream from the metering device to act as a auxiliary reservoir.

Abstract: A pressure feed, fuel injection carburetor including a carburetor base, a gassifier for gassifying a portion of the fuel-fed to the carburetor, a vacuum-operated shut-off valve connected to the gassifier permitting fuel flow only when vacuum is present downstream of acceleration dampers below the ventures of the carburetor, injection metering valves which are mechanically linked to the acceleration dampers for metering fuel to a pair of spray units mounted in the ventures, and an idle-speed fuel air mixture device for supplying air and fuel for idling operation of the engine attached to the carburetor. A richness sensor and adjustment apparatus can be provided between the shut-off valve and the pair of injection metering valves.

Abstract: A container of water is mounted on a motor vehicle and a means for dispensing that water into a passenger compartment of said vehicle is provided. The water will be delivered in the form of vapor. An electrical circuit is formed with a humidity sensing device within the passenger compartment for purposes of actuating the vapor forming and dispensing apparatus.

Abstract: A carburetor improvement comprising a step-up spring (S) seat (1) attachable to a metering rod lifter (L). The step-up spring bears against the spring seat rather than against a step-up piston (P). Part throttle adjustment of the step-up piston position on the metering rod lifter does not alter the step-up spring force from that which the step-up spring is designed to exert when changes in engine vacuum occur and a throttle shaft (TS) is stationary.

Abstract: An engine charge forming device controls the fuel metering orifice area in proportion to the throttled air flow area of the induction passage and controls the pressure drop across the fuel metering orifice in proportion to a vacuum signal which is substantially independent of the compressibility effects of throttled air flow; fuel flow is thereby proportioned to air flow throughout the range of engine operating conditions. Adjustments are provided for varying the fuel metering orifice area to set minimum and maximum fuel flows, and controls are provided for modifying the vacuum signal to vary air-fuel ratio.

Abstract: Disclosed is a carburetor for internal combustion engines having mechanism substantially to eliminate the effect on the engine of carburetor ice. When ice builds on the downstream face of the butterfly valve, on the side adjacent the idle jet, there is such a reduction of pressure at the mouth of the idle jet as to cause fuel starvation in the main jet, thus causing improper fuel air ratios or engine failure. To overcome this, mechanism is provided to vent the idle jet passage to atmosphere whenever the butterfly valve is in position for the main jet to become the primary source of fuel supply. Further, by venting the idle jet as indicated, the presence of ice on the butterfly valve will not produce the heretofore over-rich or lean mixtures, found to exist. Furthermore, such venting is useful for preventing dieseling in automobile engines.

Abstract: Intake air flowing through a controlling device turns a spring constrained rotor and an attached metering valve to control the fuel flow. The aerodynamically computed turn angle depends on air velocity and density and on vortices generated with vanes actuated with device-integral means responding to operational needs. The fuel is delivered to intake ports or to cylinders.

Abstract: A portable carbonating apparatus of the type comprising a pressure vessel and a header tank has a bottom inlet and a top outlet controlled by respective valve pistons which are rigidly connected together by a connecting rod.The pistons have equal areas exposed within the pressure vessel, so as to be pressure balanced at all times.The top valve piston also acts to control opening and closing of a venting port to ensure venting of pressure from a head space during initial opening movement of the valves.The header tank is self-valved and is detachable from the apparatus.

Abstract: A carburetor for combustion engines, having upstream of an arbitrarily operated throttle valve, an additional throttling element which is controlled automatically by a membrane unit operated by underpressure of vacuum in accordance with air flow. The additional throttling element controls a fuel jet by means of a needle. The discharge location of the fuel jet is at a point where essentially the same underpressure prevails as in the mixing chamber formed between throttle valve and throttling element. In an enrichment system for the heating phase the fuel jet is controlled by a needle whose variable position is determined by the position of a temperature-sensitive element via a lever, and the fuel quantity for acceleration is varied by means of a second membrane unit. The discharge location of this enrichment system is downstream of the throttling element. The second membrane unit may be actuated by underpressure and may have a pressure chamber closed by a movable membrane loaded by a spring.

Abstract: A carburetor comprises a carburetor body having an induction passage, a throttle valve positioned in the passage, a fuel circuit through which fuel is drawn from a fuel bowl for mixing with air to form an air-fuel mixture, a fuel metering rod responsive to movement of the throttle valve for varying the quantity of fuel flowing through the fuel circuit, and a staging valve positioned in the induction passage and movable between an open and a closed position, the staging valve functioning as a choke valve during engine cranking and warm-up and as an air valve during other engine operating conditions. The fuel metering rod is positioned relative to an inlet to the fuel circuit in response to opening and closing movements of the staging valve, when it functions as an air valve, to control the quantity of fuel flowing through the fuel circuit as demand for air by the engine increases or decreases. This control of the fuel metering rod is independent of the control thereof by the throttle valve.

Abstract: A carburetor for an internal combustion engine has an air passage, a throttle valve movable in the air passage for controlling flow of air therethrough, a source of fuel, and a fuel passage through which fuel is drawn from the source to the air passage for mixing with air to produce an air-fuel mixture combusted in the engine. The fuel passage has an orifice at one end communicating with the fuel source. A metering rod has a diameter variable along its length and is positioned in the orifice in response to movement of the throttle valve thereby to control the quantity of fuel drawn through the fuel passage. The position of the metering rod in the orifice is varied in response to a change in the engine vacuum level when a change in the load on the engine occurs. The movement of the metering rod produced in response to a change in the engine vacuum level is limited thereby to limit the variation in quantity of fuel drawn through the fuel passage when a change in engine vacuum level occurs.

Abstract: A tubular grid exhaust fume conducting heat exchanger is mounted on a horizontal top face of the fuel mixture manifold of an internal combustion motor, said grid supporting vertically centrally thereon a cylindrical tubular fuel and air mixing housing the upper end of which supports and receives air from an air filter, the lower portion of which housing has a butterfly valve mounted therein and connects downwardly, directly through said heat exchanger with said fuel mixture manifold.A jacketed and exhaust fume warmed fuel reserve canister provides a screen bottomed chamber which encloses a spherical plastic float and admits fuel axially downwardly into said chamber through a flow governing needle valve closed by said float when said float is lifted in said chamber by the fuel rising to its normal operating level.