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| Number | Title | Issue Date |
| 4398521 | Dual flow propane unit A propane supply unit for use with gasoline powered automotive internal combustion engines to replace the liquid fuel. The unit consists of a plurality of circular or otherwise formed tubular elements supplied with gas from a common manifold located withi... | 08/16/1983 |
| 4395992 | Gaseous fuel and air proportioning device The device for proportioning a gaseous fuel and air for combustion in an internal combustion engine includes a plate-like first member having a peripheral edge portion and a second member cooperating with the first member to define a mixing chamber having... | 08/02/1983 |
| 4387689 | Apparatus for converting a carburetor for gaseous fuel An attachment within the air cleaner housing of a liquid-fuel internal-combustion engine, the attachment having a circumferential venturi air passage and a gaseous fuel inlet slot inboard of the narrowest portion of the venturi air passage.... | 06/14/1983 |
| 4386593 | Fuel-air injection control system for internal combustion engines A fuel-air injection control system is provided for internal combustion engines using gasoline as a fuel. The system includes a vacuum pump which is connected to an airtight fuel supply tank containing a liquid gasoline such that operation of the vacuum p... | 06/07/1983 |
| 4377147 | Internal combustion engine 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 valv... | 03/22/1983 |
| 4369751 | Liquefied propane carburetor modification system A system which can be retrofit into an existing conventional gasoline powered vehicle for enabling the vehicle to operate on either gasoline or liquefied propane fuel. The system includes a mixer in the form of an adapter to fit on the top of an existing ... | 01/25/1983 |
| 4368713 | Gas-operated internal combustion engine A gas-operated internal combustion engine which includes a volume control valve for a gas supplied to an air/gas mixer. An air filter is arranged within a charged air supply arrangement and, between a diaphragm of the volume control valve in a section of ... | 01/18/1983 |
| 4364364 | Air-fuel ratio controller An air-fuel ratio controller adjusts the pressure of gaseous hydrocarbon fuel delivered to an internal combustion engine in order to minimize the emission of undesirable gases, specifically carbon monoxide and oxides of nitrogen. The controller includes a... | 12/21/1982 |
| 4351300 | LP Gas carburetor An LP gas carburetor adapted for use as the only carburetor for an engine or, alternatively, for use in conjunction with an existing gasoline carburetor (in particular, a two barrel carburetor) on an engine, the LP gas carburetor comprising a body adapted... | 09/28/1982 |
| 4347824 | LPG Fuel supply system A fuel supply system for an internal combustion engine operated on gaseous fuels, for example, liquid petroleum gas (LPG). The system includes a housing having a chamber for vaporizing liquid gas, including means for heating the vaporizing chamber. Also i... | 09/07/1982 |
| 4346682 | Carburetor for a multicylinder internal combustion engine and method of operation thereof A carburetion arrangement and method of carburetion for a multicylinder internal combustion engine wherein at least one carburetor acts as a main mixture forming device with the main mixture being guided through individual intake lines which connect the c... | 08/31/1982 |
| 4335697 | Internal combustion engine dual fuel system An internal combustion engine dual fuel system for controllably running the internal combustion engine on a liquid fuel, such as gasoline, in the usual manner or, at will, on liquified petroleum (LP) gaseous fuel. The conventional liquid fuel system of th... | 06/22/1982 |
| 4325343 | Fuel metering system An improvement in a fuel metering system having an engine, carburetor, a fluid fuel at super atmospheric pressure and a throttle for controlling the speed and power, the improvement being characterized by a fuel pressure regulator and an obstruction and r... | 04/20/1982 |
| 4308843 | Slow-run system and apparatus for gaseous fueled internal combustion engines A slow-run system for gaseous fueled internal combustion engines, including gaseous fuel conversions of liquid fuel engines for alternate operation on either fuel, employs a valve having an inlet receiving gaseous fuel from between the primary regulator a... | 01/05/1982 |
| 4306532 | Modified internal combustion engine and method for utilizing low and medium BTU gaseous fuels A modified internal combustion engine of the carburetor type and method of modification enables low and medium BTU fuels in gaseous form to be utilized either as the sole fuel or in conjunction with other relatively high BTU fuels in liquid or gaseous for... | 12/22/1981 |
| 4290402 | Gas-operated internal combustion engine A gas-operated internal combustion engine which includes an air/gas mixer and a volume control valve for feeding gas to the air/gas mixer. The volume control valve is normally biased into a closed position and includes a diaphragm adapted to be exposed on... | 09/22/1981 |
| 4289106 | Pressure regulator for combustible gases, in particular for internal-combustion motors The purpose of the pressure regulator is to feed internal combustion motors or engines with combustible gases and it comprises two membranes 14 and 16 which respond to the intake suction of the motor, while the second of the said membranes actuates disloc... | 09/15/1981 |
| 4285700 | Fuel enrichment apparatus and method for gaseous fuel mixers A fuel enrichment apparatus and method is shown for a gaseous fuel carburetor of either a fixed venturi or air valve type. The apparatus provides fuel enriching at the starting and wide open throttle conditions of the carburetor when the pressure drop in ... | 08/25/1981 |
| 4275698 | Internal combustion engine of the type having two inlet valves per cylinder Internal combustion engine of the type comprising a pair of inlet valves per cylinder which are actuated by a single common rocker, the inlet ports formed by said valves and the relevant seats communicating with an external source of fluid via an inductio... | 06/30/1981 |
| 4263883 | Engine combustion control system The system comprises a zirconium sensor interposed in the exhaust conduit of a gas-fueled engine for sensing both oxygen content and temperature of the exhaust gases, and for emitting electrical analog signals thereof to a comparator/controller. In turn, ... | 04/28/1981 |
| 4188919 | Fluid regulating systems A fluid regulating system has an electro-fluidic control loop in which a fluid control pressure indicative of the relationship between an existing fluid condition and a demand signal acts in opposition to a bias pressure on a control member forming part o... | 02/19/1980 |
| 4170971 | Pneumatic pressure control valve assembly A pneumatic pressure control system which controls the ratio of fuel to air in the intake manifold of the engine includes a valve assembly which is operative in response to the combined action of the negative pressure existing in the intake manifold and p... | 10/16/1979 |
| 4168685 | Fuel metering device for internal combustion engines and fuel systems incorporating such device A fuel metering device for an internal combustion engine, and in which a metering needle, common to a liquid and gaseous fuel chambers having respective inlets for communication with a respective source of liquid and gaseous fuel for the engine, extends b... | 09/25/1979 |
| 4151821 | Engine fuel supply system An inner surface of a fuel atomization chamber is heated to a temperature sufficient to vaporize gasoline. A nozzle sprays liquid gasoline against the hot surface at a high velocity so that the gasoline striking the hot surface is vaporized and broken dow... | 05/01/1979 |
| 4152121 | Installation for supplying gaseous fuels, such as LPG or natural gas, to a combustion engine The invention relates to an installation for supplying gaseous fuels such as LPG and natural gas to a combustion engine, said installation being provided with a membrane provided in a housing and being coupled to the valve stem of a gas control valve, the... | 05/01/1979 |
| 4111161 | Engine operated on hydrogen-supplemented fuel A lean air-fuel mixture and hydrogen gas are introduced into the combustion chamber so that high concentrations of hydrogen form about the spark plug and combustion chamber walls.... | 09/05/1978 |
| 4098248 | Fuel regulator for a two-cycle gas engine A large, two-cycle, port-scavenging gas engine commonly used for oil field pumping operations includes a mixing section at the intake of the scavenging chamber. Fuel gas flows through a supply line directly into this mixing section in a continuous manner ... | 07/04/1978 |
| 4063905 | Fuel mixer A gaseous fuel mixer for an internal combustion engine includes hinged air valve doors arranged for opening in accordance with manifold depression, the doors are linked to the fuel metering means and include means for ducting the gaseous fuel into the air... | 12/20/1977 |
| 4046120 | Regulating system with electromagnetic valve and control valve An internal combustion engine of a known design includes a device for correcting the air-fuel dose. The device has a gas inlet connected to the induction manifold, and a control valve controlling the gas inlet. The control valve is controlled by the negat... | 09/06/1977 |
| 4040403 | Air-fuel mixture control system Method and means are provided for effecting the controlled vaporization of a liquid fuel to simplify the ability to control a specific air-fuel ratio for an internal combustion engine. The invention contemplates two basic operations: first, a vaporized fu... | 08/09/1977 |
| 4020810 | Economizer valve for use with gas-powered internal combustion engines An economizer valve for use with an induction and fuel supply system for an internal combustion engine operated on gaseous fuels, for example, LPG or natural gas. The system is used with a conventional mixing valve which supplies air according to engine d... | 05/03/1977 |
| 3982516 | Standby system An internal combustion engine is normally fueled from a primary source of natural gas. A pressure switch closes upon sensing engine vacuum. A second pressure switch closes at a predetermined low pressure in the primary natural gas source. The closing of t... | 09/28/1976 |
| 3960126 | Pressure regulator of liquefied-gas fuel system for internal combustion engines A pressure regulator of the liquefied-gas fuel system for internal combustion engines has two cooperative diaphragms which partition the space inside the regulator body into three separate chambers. The diaphragms are operatively connected by a spring dis... | 06/01/1976 |
| 3948224 | System to prevent pollution of atmosphere A complete system for a pollution free engine, in which liquid fuels are metered into a device attached to the engine, in which device the liquids are changed into gaseous fuels (not vapors), and the gases so produced are mixed with air so that they can b... | 04/06/1976 |
| 3931798 | Control device The invention relates to a control device for a multiple cylinder-piston motor for operation with a gaseous fuel, said control device being connected to the gas conduit, leading from the throat of the venturi-tube in the air suction conduit to the evapora... | 01/13/1976 |
