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| Number | Title | Issue Date |
| 5251602 | Fuel supply system for gas-fueled engine Two embodiments of air/fuel ratio adjusting systems for gaseous-fueled internal combustion engines. In each embodiment, a pressure regulator supplies regulated fuel in gaseous form from a source in which it is stored in a liquid form to a charge former th... | 10/12/1993 |
| 5251438 | Air-fuel ratio control apparatus for engine An air-fuel ratio feedback control apparatus for a gas engine. A mixer mixes intake air and a fuel gas. A subsidiary supply path supplies at least one of the intake air and the fuel gas downstream of the mixer. Oxygen concentration sensors detect a concen... | 10/12/1993 |
| 5237981 | Fuel injection apparatus for vehicles A fuel injection apparatus for a vehicle includes a throttle body having an air flow passage extending therethrough with a throttle plate mounted in the passage. At least one fuel injector is mounted below the throttle plate and above the intake manifold ... | 08/24/1993 |
| 5231838 | No loss single line fueling station for liquid natural gas vehicles A vacuum insulated storage vessel holds a quantity of LNG for delivery to a pressure building tank. The pressure building tank maintains a natural gas head over the LNG. The pressure in the pressure building tank is lowered using liquid nitrogen (LN2... | 08/03/1993 |
| 5224347 | Method and apparatus for controlling the air-fuel ratio of a gas engine A method and apparatus for controlling and improving the air-fuel ratio of a gas engine by controlling the air-fuel ratio on an exhaust purifying apparatus such as a three way catalyst in use with the gas engine. The method involves the steps of modulatin... | 07/06/1993 |
| 5203305 | Apparatus and methods for converting conventionally fueled engines to operate on an alternative fuel An apparatus and methods for converting fuel injected internal combustion engines normally operated with a conventional fuel such as gasoline to operate with an alternative fuel are disclosed. The methods include a synchronization method where an alternat... | 04/20/1993 |
| 5201299 | Rotary gaseous fuel injector There is provided an electrically activated, multiple orifice rotary fuel injector for injecting gaseous fuel into an internal combustion engine. A rotary electric stepper motor is housed within an injector body which receives both air and compressed gase... | 04/13/1993 |
| 5163409 | Vehicle mounted LNG delivery system The present invention uses an on-board source of compressed natural gas (CNG) to pressurize the LNG in the vehicle's LNG storage tanks such that high pressure natural gas can be delivered to the use device. More than one LNG storage tank can be used witho... | 11/17/1992 |
| 5150685 | Apparatus and method for converting conventionally fueled engines to operate on an alternative fuel An apparatus and method for converting a fuel injected internal combustion engine normally operated with a conventional fuel such as gasoline to operate with an alternative fuel are disclosed. The apparatus comprises an alternative fuel introduction assem... | 09/29/1992 |
| 5150690 | Flow control system A flow control system for use in a compressible fluid-fueled internal combustion engine includes a fluid metering device comprising a plurality of fluid lines for communication between an inlet fluid manifold and a metered fluid manifold. Bistable valves ... | 09/29/1992 |
| 5146903 | Low height liquid fuel lock and converter to the gaseous phase A fuel lock/converter having an integrated housing with a liquid fuel inlet port and a gaseous fuel outlet port. The outlet port discharges to an air/fuel mixer which acts as a carburetor and its demand controls this fuel lock/converter. Between the inlet... | 09/15/1992 |
| 5143111 | Multifluid flow control unit A system is described that combines two or more fluids in fixed proportions over a wide range of flow rates, in which said proportions are independent of the rate of flow of the fluids, by causing each of said fluids to experience a drop in pressure which... | 09/01/1992 |
| 5140959 | Method and apparatus for operation of a dual fuel compression ignition combustion engine A system for fueling a compression ignition engine that minimizes the quantity of ignition fuel required by controlling the quantity of combustible mixture, rather than the fuel to air ratio.... | 08/25/1992 |
| 5136986 | Dual fuel injection structure A fuel injection structure for dual fueled combustion engines having access to the combustion chamber of a cylinder to automatically supplement a liquid fuel with a gaseous fuel, the structure being adapted to supply the gaseous fuel by a programmed elect... | 08/11/1992 |
| 5127230 | LNG delivery system for gas powered vehicles The delivery system of the invention consists of a pair of LNG fuel tanks mounted on a vehicle. A solenoid valve associated with each tank allows the vehicle operator to select the tank from which LNG is to be delivered to the engine. An automatic overrid... | 07/07/1992 |
| 5121609 | No loss fueling station for liquid natural gas vehicles The fueling station of the invention consists of a vacuum insulated storage vessel for delivering LNG to a pressure building tank. The pressure building tank holds a quantity of LNG and a natural gas head. The pressure in the pressure building tank is low... | 06/16/1992 |
| 5105790 | Current controlled fluid bleed A fluid bleed device for controlling the amount of natural gas supplied to the carburetor of a turbocharged carbureted natural gas engine provides a regulated output fluid pressure to the setpoint of the natural gas supply regulator feeding the carburetor... | 04/21/1992 |
| 5105791 | Current to pressure/vacuum transducer An electric current to gas pressure transducer provides a very low output pressure of just a few inches of water column and is capable of providing a negative or vacuum output as well as a low position pressure output. This transducer is used in an air/fu... | 04/21/1992 |
| 5103795 | Air and fuel mixing apparatus and method An apparatus 10 for introducing a mixture of air and gaseous fuel into internal combustion engines has a housing 12 in communication with a supply of gaseous fuel that may be mounted to tubular intake ports 11 of the engine. The apparatus has a pair of co... | 04/14/1992 |
| 5101799 | Mixture control unit for use with the control system of a soil venting apparatus The invention provides a mixture control system for controlling the flow of vaporized hydrocarbons drawn into an engine for combustion and combining a supplemental fuel with the vaporized hydrocarbons as required to maintain a near stoichiometric mixture.... | 04/07/1992 |
| 5086748 | Fuel supplying system for gas engine Several embodiments of gaseous fuel supplying systems for an internal combustion engine used to power a portable generator. In each embodiment, heat is supplied to the fuel so as to maintain the fuel pressure if the fuel pressure falls below a predetermin... | 02/11/1992 |
| 5083547 | Air and fuel mixing apparatus An apparatus 10 for introducing a mixture of air and gaseous fuel into internal combustion engines has a housing 12, in communication with a supply of gaseous fuel, that is mounted to a tubular intake port 11 of the engine carburetor. The apparatus has a ... | 01/28/1992 |
| 5081977 | Low pollution natural gas vehicle A method and apparatus for reducing emissions from an internal combustion engine used for propelling a heavy land vehicle, for example, comprising a fuel supply tank for storing liquified natural gas and a fuel circuit for cooling compressed charge air to... | 01/21/1992 |
| 5076245 | Fuel pressure control system for gaseous fuel engines This invention has an inlet for either gaseous or liquified gases (LP gas requiring a vaporizer within the system) with the proper passages from the inlet to a back seated fuel valve which is opened by a pressure differential (vacuum from the idle system)... | 12/31/1991 |
| 5076244 | Fuel injector Injector apparatus for direct injection of liquefied gas fuels, particularly LPG into internal combustion engines, includes a partially stabilized zirconia tube which incorporates a sliding spool therein for controlling a metering orifice of a nozzle. The... | 12/31/1991 |
| 5070851 | Air fuel mixing device for producer gas A fuel/mixing device for mixing producer gas with air is provided to generate a suitable air/fuel mixture for firing an internal combustion engine. Stepped venturi inlets are utilized, whereby the gas is expanded as the air is reduced, to both accelerate ... | 12/10/1991 |
| 5070850 | Mixture control unit system for soil venting apparatus The invention provides a mixture control system for controlling the flow of vaporized hydrocarbons drawn into an engine for combustion and combining a supplemental fuel with the vaporized hydrocarbons as required to maintain a near stoichiometric mixture.... | 12/10/1991 |
| 5067523 | Air-gas controller unit An air-gas controller unit to supply a gas-fired burner with a combustible air-gas mixture, the unit serving to modulate the volumetric flow rate of the mixture without, however, altering the ratio of air to gas which is pre-set for optimum combustion eff... | 11/26/1991 |
| 5058625 | Valve for intermittent introduction of fuel A valve for the intermittent introduction of fuel, in particular gaseous fuel, into an intake tube of an internal combustion engine, which is provided with an electrically actuatable valve member disposed in a valve housing. The valve comprises a slide va... | 10/22/1991 |
| 5052360 | Process and apparatus for timed port injection of fuel to form a stratified charge A process and apparatus for timed port injection and enriched stratified charge of fuel, preferably gaseous fuel, into an internal combustion engine. The process begins with forming a lean fuel/air mixture with a first fuel portion in an intake manifold u... | 10/01/1991 |
| 5033444 | Liquid butane fuel injection for internal combustion engines An engine powered by fuel having a boiling temperature less than ambient wherein the fuel is stored as a liquid and delivered in the liquid state to a fuel injection system. The fuel is sprayed into the intake port region of a cylinder head as liquid drop... | 07/23/1991 |
| 5027758 | Fuel system for crankcase scavenged two cycle spark ignition engines A fuel system for crankcase scavenged two cycle spark ignition engines which includes a specialized valve assembly connecting a source of propane gas and a source of oil to the engine. An automatic main valve connects the source of gas to the engine port ... | 07/02/1991 |
| 5025758 | Gas injection system This invention relates to apparatus for metering the supply of natural gas to an internal combustion engine having an air intake manifold and throttle valve mounted therein comprising: a pressure regulator for regulating the pressure of said natural gas; ... | 06/25/1991 |
| 5012781 | Gas engine A small portable generator powered by a gas fueled internal combustion engine. The gas fuel supply system for the engine includes a solenoid value whose duty cycle is regulated so as to permit unthrottled operation of the engine and afford engine speed co... | 05/07/1991 |
| 5010868 | Gas-phase propane fuel delivery system A gas phase fuel delivery system is provided for delivering a vapor phase fuel to a regulator independent of fuel tank temperatures, the system comprises a storage tank for storing a fuel, such as liquid phase propane, and a regulator in fluid communicati... | 04/30/1991 |
| 4997458 | Tilt valve carburetor for gaseous fuel systems An air/gaseous fuel proportioning device includes an air inlet, a fuel inlet, an outlet to feed an air fuel blend to an engine, with the air inlet having an air butterfly valve to throttle the air flow, having a disc-shaped fuel valve resting in a conical... | 03/05/1991 |
| 4991561 | Gas-air mixer A gas-air mixer for internal combustion engines having an inlet and an outlet diffusor and being mounted in a collar member which forms a cyclindrical surface between them. Feeding channels are disposed between the inlet and outlet diffusors which termina... | 02/12/1991 |
| 4989573 | Gas powered engine with glow plug ignition A fuel supply and glow plug arrangement for a portable electrical power supply fueled by a gaseous fuel internal combustion engine. The gaseous fuel flow to the engine is controlled by a solenoid valve having its duty cycle varied to vary engine speed. In... | 02/05/1991 |
| 4987868 | Spark plug having an encapsulated center firing electrode gap A spark plug of an engine ignition/combustion system have the electrode gaps of the spark plug surrounded by a capsule having a controlled orifice system. The orifice system and electrode gap are positioned, sized, and oriented specifically for use with l... | 01/29/1991 |
| 4965052 | Integrated product generation and catalytic product synthesis in an engine-reactor A process of synthesizing an end product within an integrated engine-reactor wherein an initial product, e.g., syngas, is generated within a first chamber of the engine-reactor. This product is contacted with a catalyst in a second chamber within the engi... | 10/23/1990 |
