Posterior Patents (Class 48/189)
  • Patent number: 4671247
    Abstract: An apparatus for enhancing fuel atomization in an internal combustion engine includes an impeller assembly mounted between the carburetor and intake manifold of the engine with a rotational rotor for impingement by the moving fuel entrained airstream from the carburetor and the intake manifold to rotationally disperse and further atomize the fuel particles in the airstream. An E.G.R. valve operated by the vacuum draw from the engine controls the admission of a supplemental airstream into the impeller assembly radially against the rotor member at engine speeds in excess of a predetermined threshold level to impart increased rotational speed to the rotor member to further enhance fuel atomization and to achieve a turbocharging-like effect.
    Type: Grant
    Filed: February 26, 1986
    Date of Patent: June 9, 1987
    Inventor: William E. Barbee
  • Patent number: 4667648
    Abstract: An assembly being interposed between a carburetor and an intake manifold comprises three spacer plates and at least two screens for vaporizing the highest concentration of fuel and for passing unobstructed the highest concentration of air traveling therethrough. The top and bottom screens are separate and parallel and extend traversely across and are substantially perpendicular to the primary passageway formed by the aligned centrally located primary passageway openings in each spacer plate. The top screen covers approximately one-half the cross-sectional area of the primary passageway opening. The bottom screen covers approximately one-third the cross-sectional area of the primary passageway opening, and both screens are situated and positioned directly below the back side of the carburetor's throttle valve.
    Type: Grant
    Filed: March 4, 1986
    Date of Patent: May 26, 1987
    Inventor: Leroy E. Beldin
  • Patent number: 4664089
    Abstract: A fuel saving device is described that comprises a mixer, a control, and a bypass air tap through a connection hose between the hose leading from the air filter to the crankcase and the hose leading from the air filter to the control. The mixer possesses a mixing orifice in the form of a hollow rod, that is formed as a triangular section provided with slits. An important feature is the tap of the bypass air out of the hose to the crankcase. With this tap particularly efficacious mixing proportions are obtained in the mixer with respect to a favorable preparation of the fuel-air-mixture.
    Type: Grant
    Filed: December 3, 1984
    Date of Patent: May 12, 1987
    Inventors: Fredi Pommer, Axel Blume
  • Patent number: 4632083
    Abstract: A gaseous fuel injection unit for internal combustion engines fed with gaseous fuel such as liquefied petroleum gas or methane, comprises at least one volumetric measuring device (7) arranged to feed during each engine cycle a determined volume related to the piston displacement, and into which there is fed and respectively discharged that quantity of gaseous fuel complying with the required mixture ratio of fuel to air drawn in by the engine during each cycle. A control unit (5) senses operating pressures along the intake pipe system (1), namely in the injection zone (19) and in the zone (18) downstream of the throttle valve (2), in order to control an expander unit (10, 11) which feeds the gaseous fuel to the volumetric measuring device (7) at a pressure equal to the sum of the absolute values of the two pressures at the aforesaid points, and to control said volumetric measuring device.
    Type: Grant
    Filed: February 13, 1985
    Date of Patent: December 30, 1986
    Assignee: MED di Reggiani Medardo
    Inventor: Medardo Reggiani
  • Patent number: 4589397
    Abstract: An apparatus for adapting to gases of different calorific values in the supply of gas-air mixture to gaseous-fuel engines has a gas line with a gas pressure regulator and an air line, each of which discharged into a gas-air mixer. Leading out of the mixer is a mixture line, in which a mixture valve is disposed. The mixture line leads to the intake manifold of the gas engine. In order to be able to use gases of different calorific values without unfavorably varying the gas-air ratio in the partial-load range, a preferably adjustable throttle is disposed in a bypass line leading from the air line to the mixture line, bypassing the mixer.
    Type: Grant
    Filed: July 25, 1984
    Date of Patent: May 20, 1986
    Assignee: Motoren-Werke Mannheim Aktiengesellschaft vorm, Benz Abt, stationarer Motorenbau
    Inventor: Leo Stankewitsch
  • Patent number: 4580544
    Abstract: An air/fuel homogenizing device for use downstream of a carburetor and upstream of the intake to an internal combustion engine to more effectively homogenize and/or otherwise improve the entrainment of the fuel in the air stream from the carburetor comprises, a swirl chamber into which the air/fuel mix enters tangentially of the swirl to be created therein and from which it exits axially of the swirl created therein the boundary or at least a portion thereof against which the swirling fuel/air mix impinges or passes being heated to a temperature, above ambient temperature or at least the temperature of the fuel/air mix to assist in vaporization by the use of a fluid jacket which receives either exhaust gases or coolant from the engine and a fuel particle size reducing member disposed about the substantially axial exit opening from the swirl chamber through which reducing means the air/fuel mix passes to exit the chamber.
    Type: Grant
    Filed: November 27, 1984
    Date of Patent: April 8, 1986
    Inventor: Frank G. B. Walker
  • Patent number: 4553519
    Abstract: A system for simultaneously injecting propane and gasoline into an internal combustion engine. A propane supply reservoir is connected to the engine carburetor by a first line. A metering valve is positioned in the first line and has a vacuum responsive valve actuator associated therewith. The vacuum responsive actuator is connected by a second line to the EGR valve which creates a stronger vacuum with increasing engine speed. As the vacuum strength increases, the valve actuator opens the valve further allowing more propane to flow into the carburetor which is also drawing vaporized gasoline through conventional means. Preferably, an air aspirating device is positioned in the first line between the valve and carburetor for mixing air with the propane.
    Type: Grant
    Filed: September 13, 1984
    Date of Patent: November 19, 1985
    Inventor: Laverne F. Masson
  • Patent number: 4545356
    Abstract: A liquified petroleum gas carburetor (12) receiving LPG as a liquid and through a pair of pressure regulators (20, 30) and a heat exchanger (22) reducing the liquid to a vapor for ingesting into the engine (8). The heat exchanger (22) is mounted integral with the carburetor (12) and is contiguous with the intake manifold (24) thereby providing a large thermal mass for elevating the temperature of the LPG. Connected for synchronous movement are the fuel metering valve (40) and the air metering valve (10) for each carburetor bore. The fuel metering valve moves in response to the air metering valve (10). A vacuum pressure control (66) is shown to maintain a variable fuel/air ratio in response to engine requirements.
    Type: Grant
    Filed: May 31, 1984
    Date of Patent: October 8, 1985
    Assignee: Allied Corporation
    Inventor: Gary L. Casey
  • Patent number: 4537173
    Abstract: A fuel distribution system for a multi-cylinder internal combustion engine includes an intake manifold having a tubular inlet stack with an inlet including a mounting for a carburetor on the top thereof and a plurality of runner passages extending generally transverse to the bottom of the stack and to intake ports at each cylinder. The manifold includes a housing downstream of the stack providing a freely rotatable mounting for a shaft having a plurality of axial flow turbine blades thereon and a radial flow impeller is also mounted on the shaft, spaced from the turbine blades. The stack has a cylindrical interior wall section closely fitted to the turbine blades, defining therewith a ducted velocity turbine, and beneath the stack the housing surrounds the impeller and is connected to each of the runner passages, whereby all fuel/air mixture passes through the turbine and impeller.
    Type: Grant
    Filed: September 26, 1984
    Date of Patent: August 27, 1985
    Inventor: Claude R. Norris
  • Patent number: 4532909
    Abstract: A butterfly regulated carburetion system having its outlet connected to the intake manifold by a device restricting fuel and air flow very substantially from the rated flow capacity of an OEM carburetor in a manner promoting improved vaporization of the fuel and thorough mixture thereof with air before exit into the inlet of an OEM inlet manifold thereby to obtain more uniform proportions of fuel and air to each cylinder. These objectives are achieved by provision of a riser plate having a converging fuel vaporizing and mixing passage at least as long as the diameter of the OEM carburetor outlet. When the OEM engine is applied to a typical conventional vehicle, the device provides improved acceleration, better idling, greater power and utilizes substantially less fuel while retaining optimum drivability factor of 92 miles per hour.
    Type: Grant
    Filed: March 26, 1984
    Date of Patent: August 6, 1985
    Inventor: Maurus E. Jackson
  • Patent number: 4524748
    Abstract: There is disclosed a device for separating oversize fuel particles in an air fuel mixture in internal combustion engines and recirculating them to the fuel supply system for reinjection and atomization by the carburetor or fuel injector. An array of low loss venturi nozzles with central traps is utilized to inertially separate the oversize particles, resulting in a fine, more uniform fuel size distribution to the engine inlet.
    Type: Grant
    Filed: June 11, 1982
    Date of Patent: June 25, 1985
    Inventor: Hugo V. Giannotti
  • Patent number: 4522162
    Abstract: An efficient, portable, easy to operate tool employing a linear motor is disclosed that is powered by the gases produced from the internal combustion of a fuel and air mixture. A supply of liquified gas stored under pressure in a cylinder provides the source of power. The linear motor is slidably mounted within a cylinder to move reciprocally downwardly and upwardly through a driving and return stroke. A combustion chamber is formed at the upper end of the cylinder. A spark plug powered by a piezo-electric firing device is located within the combustion chamber. The combustion chamber features a turbulence generator, such as a fan, driven by an electric motor which is continuously in operation when the tool is in use. A main valve mechanism actuated by a set of lifting rods that are moved upwardly and downwardly when the tool is moved towards and away from the workpiece, is used to control the opening and closing of the combustion chamber and to control the flow of fresh air through the combustion chamber.
    Type: Grant
    Filed: November 14, 1983
    Date of Patent: June 11, 1985
    Assignee: Signode Corporation
    Inventor: Milovan Nikolich
  • Patent number: 4513727
    Abstract: A process for controlling the supply of gaseous secondary fuel to the intake air stream of an I.C. engine normally supplied with liquid primary fuel includes the steps of supplying the gaseous secondary fuel to the engine air intake stream according to a desired air-to-fuel ratio during normal engine operation by utilizing a movable air flow responsive member in the path of the air intake stream to control the position of a gas valve in the gas fuel supply system, and effecting closure of the gas valve as the engine speed controller approaches its idle or off position without positively moving the air flow responsive member. The flow of secondary gas fuel to the engine is thus reduced or stopped without altering the position of the air flow responsive member which continues to move in response to intake air flow. The gaseous fuel, if supplied to a supercharged liquid fuel burning engine, is pressurized by the supercharger system upstream of the engine intake air ports.
    Type: Grant
    Filed: November 23, 1983
    Date of Patent: April 30, 1985
    Assignee: Propane Carburetion Systems, Inc.
    Inventors: Thomas Lagano, William H. Batchelor
  • Patent number: 4505249
    Abstract: A fuel control system for use in supplying gaseous fuel from a high pressure source to an internal combustion engine which has an air/fuel intake through which air and gaseous fuel is supplied to the engine and an air/fuel intake manifold in which variations in the vacuum are indicative of engine loading conditions. The system comprises; a pressure regulator, a flow control valve, a control for measuring the speed of the engine, a modulator for modulating the fuel supply and a pressure control device communicating with said pressure regulator to increase or decrease the pressure in the gaseous fuel output in response to the receipt of a signal from the modulator. The pressure regulator receives pressurized gaseous fuel from the source and serves to maintain a constant pressure in the discharging fuel for a given engine speed regardless of flow rate and to increase or decrease the pressure in the discharging gaseous fuel in response to an increase or decrease in engine speed.
    Type: Grant
    Filed: April 30, 1984
    Date of Patent: March 19, 1985
    Assignee: EMCO Wheaton International Limited
    Inventor: Colin G. Young
  • Patent number: 4503833
    Abstract: A method and apparatus for operating an electric ignition, internal combustion engine that substantially improves the fuel efficiency by utilizing heat normally discharged to the ambient to condition and prepare the fuel mixture prior to entry into the combustion chambers. The apparatus comprises a fuel vaporizer that transfers heat from the engine coolant system to the fuel mixture as it leaves a fuel introducing device such as a carburetor; a fuel mixture heater for heating the mixture above the vaporization temperature of the liquid fuel; and, a mixture homogenizer for thoroughly stirring the fuel mixture that is located in the fuel mixture flow path intermediate the vaporizer and heater. The homogenizer is operative to compress the fuel mixture under certain engine operating conditions and the heater forms the intake manifold for the engine and includes branch flow paths and associated conduits that communicate directly with each combustion chamber through a valve controlled port.
    Type: Grant
    Filed: June 22, 1984
    Date of Patent: March 12, 1985
    Assignee: MotorTech, Inc.
    Inventor: Henry Yunick
  • Patent number: 4492212
    Abstract: An internal combustion engine of improved efficiency having a cylinder and an intake manifold, the manifold containing therein between the plane of laminated flow and the cylinder end of the manifold a device for increasing turbulence, said device including at least one unit comprising a plate having a central opening which is responsive to flow through said opening to produce turbulence and a second plate having a central opening therein, the plane of the opening in the second plate being downstream of the first mentioned plate. The invention includes also a method for making such an improved engine in which the device is inserted into the cylinder end of the intake manifold until it is fully contained within the manifold.
    Type: Grant
    Filed: August 9, 1982
    Date of Patent: January 8, 1985
    Inventor: Richard L. Dooley
  • Patent number: 4485792
    Abstract: A method for supplying an internal combustion engine with liquefied petroleum gas (LPG) and an apparatus for blowing LPG into the intake manifold of the engine. The apparatus includes an evaporator-pressure regulating valve, downstream of which a metering valve having a metering piston is provided. The metering piston is movable in a guide bore and opens a metering opening to a greater or lesser extent. The adjustment of the metering piston is effected in accordance with the quantity of air aspirated by the engine by means of an air flow rate meter, as a result of which a quantity of LPG corresponding to the aspirated air quantity can be metered. The pressure at the evaporator-pressure regulating valve is variable via a control pressure line by means of a pneumatic control medium via a pressure control valve in such a manner that it is possible to regulate a mixture adapted to operating parameters of the engine.
    Type: Grant
    Filed: September 21, 1982
    Date of Patent: December 4, 1984
    Assignee: Robert Bosch GmbH
    Inventor: Jouke van der Weide
  • Patent number: 4485795
    Abstract: A fuel atomizer adapted to be mounted between the carburetor and intake manifold of an internal combustion engine. The atomizer comprises a housing having mounted therein an impeller with blades having their leading edges disposed at a angle with respect to the horizontal plane of rotation of the impeller. Rotation of the impeller will effect a break up of the larger fuel droplets and to then mix with the incoming air. The impeller is provided with a specially designed spindle journalled for rotation in specially designed spindle bearings to thus insure a smooth operation of the impeller. The housing is also provided with a network of interconnected bars at the outlet end of the housing to effect a still further atomization of the air/fuel mixture as it leaves the housing responsive to the suction created in the intake manifold of the internal combustion engine.
    Type: Grant
    Filed: January 25, 1983
    Date of Patent: December 4, 1984
    Inventor: Linda L. Lockard
  • Patent number: 4478607
    Abstract: There is disclosed a device for atomizing and dispersing fuel in a fuel/air mixture of the propeller type for an internal combustion engine. The housing of the device comprises two concentric barrels, each having a symmetrical bearing support. The barrels are press fit together to assure bearing alignment for the propeller. A downstream screen protects the engine from debris and further atomizes the fuel without substantially restricting fuel/air flow.
    Type: Grant
    Filed: August 3, 1983
    Date of Patent: October 23, 1984
    Assignee: Turra International, Inc.
    Inventor: Timothy L. Capps
  • Patent number: 4476843
    Abstract: An apparatus for increasing the efficiency of carburetors for internal combustion engines comprises a base having an opening for the passage of the fuel mixture from the carburetor and having a cavity for controlledly admitting secondary air towards said opening, through a plurality of conduits extending within the opening, a first grid partially spanning the throat of the carburetor and a second grid partially spanning the opening at the level of the surface of the base which engages the admission manifold of the engine, such that a non-obstructed gap is left between said grids at the opening. Also, a filter is provided in said cavity, said filter having control valves for admitting air into said cavity, said valves being adjustable for controlling the amount of air to be admitted into the opening.
    Type: Grant
    Filed: March 17, 1983
    Date of Patent: October 16, 1984
    Inventor: Sergio Pena-Medina
  • Patent number: 4473057
    Abstract: A fuel atomizer for use in an internal combustion engine is mounted on a bracket and suspended within the air intake passageway of an engine, between the carburetor and the intake manifold, to facilitate the thorough mixing of fuel and air before combustion. When air moves through the passageway, it causes the atomizer to spin, which breaks up fuel droplets and promotes efficient combustion. The atomizer has a cylindrical cage with blades disposed about and parallel to its axis of rotation and with two circular end pieces which abut the blades to form the ends of the cage. The cage is horizontally mounted on an axis of rotation by the bracket which suspends the atomizer in the air passageway.
    Type: Grant
    Filed: November 15, 1983
    Date of Patent: September 25, 1984
    Inventor: Thomas L. Collins
  • Patent number: 4463736
    Abstract: A fluid metering device is provided including a chambered rotor for metering correctly proportioned mixtures of air and a vaporized fuel to an internal combustion engine. The rotor includes radially disposed chambers and is enclosed in a housing having an inlet port and an outlet port. Upon rotation of the rotor the chambers are alternately biased into flow communication with the inlet port and the outlet port. The inlet port is in flow communication with a gaseous fuel supply and the outlet is in flow communication with an intake to the internal combustion engine. The speed of the rotation of the rotor is adjustable to vary the amount of gaseous fuel presented to the engine for selectively varying the output of the engine.
    Type: Grant
    Filed: June 7, 1982
    Date of Patent: August 7, 1984
    Inventor: Wallace Hayward, Jr.
  • Patent number: 4463742
    Abstract: A fuel economizer for fitting between the carburetor and inlet manifold of an internal combustion engine. The economizer consists of a plate having a restricted orifice, there being situated beneath the orifice a further plate having a plurality of teeth or protrusions extending into the fuel/air stream passing through the restricted orifice.
    Type: Grant
    Filed: September 21, 1982
    Date of Patent: August 7, 1984
    Inventor: Cyril J. Williams
  • Patent number: 4453523
    Abstract: Disclosed herein is a gaseous fuel and air supply system for an internal combustion engine, which system comprises an air-fuel mixing chamber, an air supply duct communicating with the mixing chamber and with the atmosphere and including a sensing tap, a flow control valve adapted to communicate with a source of pressurized gas, being operable between open and closed positions, and being biased toward the closed position, a fuel supply duct extending between the flow control valve and the mixing chamber and including a sensing tap, and an actuator communicating with the sensing tap in the air supply duct and with the sensing tap in the fuel supply duct for controlling operation of the flow control valve between the open and closed positions.
    Type: Grant
    Filed: March 8, 1982
    Date of Patent: June 12, 1984
    Assignee: Outboard Marine Corporation
    Inventor: Arthur G. Poehlman
  • Patent number: 4452219
    Abstract: An induction regulator for fitting in the inlet manifold of a carbureted internal combustion engine, the regulator serving to balance the fuel flow to match the engine requirements.The regulator comprises mounting straps (13) forming part of a frame (9). The frame (9) surrounds a wire mesh gauze (11) through which the fuel air mixture passes en route to the engine. An open top reservoir (19) is disposed with its open top adjacent the mesh gauze (11) on the downstream side of the gauze (11) and serves to retain excess unvaporized fuel, and prevent it from passing to the engine. The excess fuel in the reservoir vaporizes when additional fuel is demanded and passes to the engine.
    Type: Grant
    Filed: May 5, 1982
    Date of Patent: June 5, 1984
    Inventors: John F. Tay-Lodge, Bernard L. Proudlock
  • Patent number: 4452214
    Abstract: A fuel mixing device is provided an more particularly on improved fuel mixing device for an internal combustion engine which improves the fuel efficiency of the engine to obtain a more complete utilization of the power transmitting properties of the fuel.
    Type: Grant
    Filed: September 14, 1981
    Date of Patent: June 5, 1984
    Assignee: Fuel Efficiency Co.
    Inventor: Byron M. Dahl
  • Patent number: 4445846
    Abstract: A flame-out-resistant portable torch for igniting gas-air blasts in industrial gas furnaces includes an inner pipe for receiving gas at one end, with the opposite end closed and a gas-expulsion slot along one side, surrounded in coaxial spacing by an outer pipe with an air-induction side slot from the slot in the inner pipe, the outer pipe has air-induction butt end opening, vents around portions of it near the slots, and a flame expulsion end with anti-back-pressure structure, and the coaxial space between the inner and outer pipes has special baffles along it for gas-air mixing for better flame-retention.
    Type: Grant
    Filed: January 28, 1982
    Date of Patent: May 1, 1984
    Inventor: Owen M. Mattingly
  • Patent number: 4441475
    Abstract: A supplementary fuel system adds propane to the induction passage of an ethanol fueled engine to start and sustain operation of the engine at low temperatures. The propane flow is cycled on and off during cranking of the engine and the propane delivery pressure is varied with induction passage pressure.
    Type: Grant
    Filed: July 9, 1982
    Date of Patent: April 10, 1984
    Assignee: General Motors Corporation
    Inventors: Patrick M. Bouchard, Jack B. King
  • Patent number: 4440137
    Abstract: A liquid and supplemental gas fuel supply system for an I.C. engine, and in particular a diesel cycle engine, includes a gas fuel control valve that meters supplemental gas fuel into the engine intake air stream in response to engine air flow using a direct air flow responsive member to control a gas valve through a lost motion connection. The position of the gas valve is moreover controllable by a separate throttle position responsive control system that moves the gas valve towards closed position as the throttle approaches the closed or idle position, and holds the gas valve closed until the throttle has moved away from the closed or idle position. The separate control motion of the gas valve is independent from the motion of the air flow responsive member and does not restrict or interfere with the movement of the latter.
    Type: Grant
    Filed: July 12, 1982
    Date of Patent: April 3, 1984
    Assignee: Propane Carburetion Systems, Inc.
    Inventors: Thomas Lagano, William H. Batchelor