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| Number | Title | Issue Date |
| 7318423 | DME fuel supply device for diesel engine In the DME fuel supply device for a diesel engine, the time necessary to retrieve DME fuel remaining in the injection system after stopping the diesel engine into the fuel tank can be reduced. In a non-injection state, a three-way valve (71) is controlled to ... | 01/15/2008 |
| 7280950 | Locomotive diesel engine turbocharger and turbine stage constructed with turbine blade vibration suppression methodology A method for fabrication of a locomotive diesel engine turbocharger turbine stage so as to avoid harmonic vibration in the turbine blades when the engine is operated at pre-selected throttle settings. Upon determining throttle settings for the engine and modeling of... | 10/09/2007 |
| 7270089 | Method and apparatus for controlling transition between operating modes in a multimode engine At least one engine operating parameter other than total fuel energy content is taken into account when transitioning between operating modes in a dual fuel or other multimode engine (20) in order to maintain a smooth transition between modes. The parameter p... | 09/18/2007 |
| 7162995 | Method for injecting gaseous fuels into an internal combustion engine at high pressures A method directly injects gaseous fuel into the combustion chamber of an internal combustion engine. The compressibility of the gaseous fuel is used to provide a fuel to the combustion chamber that is injected over all engine operating conditions at pressures that r... | 01/16/2007 |
| 7134282 | Turbo system and method of installing A turbocharger system for a combustion engine and method of installing a turbocharger system includes a turbocharger having an oil inlet and an oil outlet configured for being coupled to an oiling system. An oil pump is connected to the oil outlet of the turbocharge... | 11/14/2006 |
| 7131430 | Emissions control system for small internal combustion engines An evaporative emissions control system for small internal combustion engines includes a control valve associated with a fuel line and with a vent line which each connect the fuel tank to the carburetor. When the engine is not running, the control valve automaticall... | 11/07/2006 |
| 7100582 | Propane injection control system and apparatus for vehicles A propane injector system for internal combustion engines for improving performance, fuel efficiency, safety, cleanliness and environmental friendliness. The system consists of introducing propane gas into “a black box” that has a pressure reducing valve to drop... | 09/05/2006 |
| 7045916 | Electronic fuel selection switch system Devices and methods for providing a switch for selecting which of a number of fuel valves receives power. The switch preferably provides a delay between the powering down of a first fuel valve and the powering up of a second fuel valve. Also included are systems and... | 05/16/2006 |
| 7044103 | Fuel quantity modulation in pilot ignited engines An engine system includes a first fuel regulator adapted to control an amount of a first fuel supplied to the engine, a second fuel regulator adapted to control an amount of a second fuel supplied to the engine concurrently with the first fuel being supplied to the ... | 05/16/2006 |
| 7000573 | Compression ignition engines A method and arrangement of supplying a supplementary fuel (8) to a compression ignition internal combustion engine wherein an air supply (3) to the engine is first caused to pass through a natural vortex creator (1), and a supply of supplementa... | 02/21/2006 |
| 6845616 | Internal combustion engine which can be operated with a choice of different fuels, especially for a motor vehicle drive system The invention provides an internal combustion engine which can be run optionally on various fuels of different energy density, in particular for a motor vehicle drive, characterised in that the engine is equipped with a supercharging compressor which can be connecte... | 01/25/2005 |
| 6823832 | Method and device for control of the fuel injection in an internal combustion engine In a method and a device for controlling the injection of fuel into an internal combustion engine, a distinction is made at least between a first state and a second state. Immediately before the transition from the first state to the second state, the injection data... | 11/30/2004 |
| 6814032 | Dual fuel engine The present invention aims to allow an arbitrary selection to be made between gas operation and diesel operation, to achieve a reduction in NOx even when in diesel operation, to allow the compression ratio to be adjusted and altered in accordance with the operating ... | 11/09/2004 |
| 6766269 | LPG fuel composition estimation method and system A Liquefied Petroleum Gas (LPG) fuel composition estimation method is provided that determines an LPG fuel composition from saturation vapor pressure data and an estimated fuel temperature and fuel pressure inside the fuel tank. A Liquefied Petroleum Gas Injection (... | 07/20/2004 |
| 6694242 | Dual fuel engine having multiple dedicated controllers connected by a broadband communications link A control system for a dual fuel engine that can operate in either dual fuel mode or in diesel only mode includes two controllers. One controller controls operation of the gaseous fuel supply system, and the other controls the liquid fuel supply system. E... | 02/17/2004 |
| 6679224 | Method and apparatus for operating a diesel engine under stoichiometric or slightly fuel-rich conditions A method and apparatus for operating a diesel engine under stoichiometric or slightly fuel-rich conditions, as is often necessary to maintain effective operation of certain post-combustion emission reduction devices, such as Lean NOx Traps, includes a rea... | 01/20/2004 |
| 6675748 | Method and apparatus for fuel injection into an internal combustion engine A method and apparatus for injecting a gaseous fuel into a combustion chamber of an internal combustion engine (ICE) cylinder employs a combination of operating modes. First, one of a low load and a high load mode of operation is selected during the opera... | 01/13/2004 |
| 6601560 | Method for starting and operating an internal combustion engine A method is provided for operating an internal combustion engine comprising a combustion chamber defined by the inner wall of a cylinder, a cylinder head and the upper surface of a piston moveable longitudinally within the cylinder, the engine further com... | 08/05/2003 |
| 6591817 | Dual fuel method and system A special dual fuel method and system is provided to enhance vehicle performance and fuel consumption as well as to accommodate a smooth transition when operating the engine on different fuels, such as gasoline or liquified petroleum gas (LPG). When the e... | 07/15/2003 |
| 6543395 | Bi-fuel control system and retrofit assembly for diesel engines A bi-fuel control system and assembly for modifying and operating a diesel engine to the extent that the engine is capable of running in either a full diesel fuel mode or a bi-fuel mode, where bi-fuel is defined as a mixture of a methane based gas and die... | 04/08/2003 |
| 6484699 | Universal fuel injection system A universal fuel injection system for liquid and gaseous fuels and mixes thereof the universal fuel injection system having a universal fuel injection module interposed between a liquid fuel injector nozzle the universal fuel injection module having a spr... | 11/26/2002 |
| 6427660 | Dual fuel compression ignition engine A compression ignition internal combustion engine 7 is provided. The engine has at least one combustion chamber 10 having an air inlet 14 and an exhaust outlet 26. A dual fuel injector is provided having a mixing chamber 46 with an outlet fluidly connecte... | 08/06/2002 |
| 6422015 | Propane injection system and method for a diesel engine A method and system for reliably and cost effectively operating a turbocharged diesel engine by injecting propane in gaseous form from a vehicle mounted tank into the engine by the use of a fuel pressure regulator valve responsive to the boost pressure of... | 07/23/2002 |
| 6298833 | Fluid seal apparatus and method for dynamically controlling sealing-fluid pressure A dynamic fluid sealing system for a fuel injection valve employs sealing-fluid to separate a gaseous fuel and a second fluid in the fuel injection valve, thereby preventing leakage of the gaseous fuel into the second fluid. A pressure-balancing system, w... | 10/09/2001 |
| 6269300 | Method for producing production control software for a natural gas or diesel engine controller A method of operating a computer to automatically produce production control software for a natural gas engine controller or a diesel engine controller is provided. The method includes the steps of (1) as a function of user input, defining a set specifica... | 07/31/2001 |
| 6202601 | Method and apparatus for dual fuel injection into an internal combustion engine Two different fuels are injected into the combustion chamber of an internal combustion engine. A main fuel is ignited by a pilot fuel that is more readily flammable than the main fuel. According to the method, load conditions on the engine are monitored a... | 03/20/2001 |
| 6178927 | Gas engine A gas engine has a control system having a pilot control device for adjusting the operating state of the engine in response to changes in limiting conditions that are monitored. The control system further includes a knock monitoring device which is supero... | 01/30/2001 |
| 6125797 | Alternate fuel system for an engine The invention relates to an alternate fuel system for a diesel engine that contains a fuel processing unit, and a alternate fuel storage tank that feeds alternate fuel to the fuel processing unit and then on to the engine. In this case, there are a series... | 10/03/2000 |
| 6095112 | Reciprocating piston engine A reciprocating piston engine which is selectively operable in either a gas operation mode with a gaseous fuel or a diesel operation mode with a liquid fuel includes a main combustion chamber which has an inlet for receiving gas and/or air, an injection d... | 08/01/2000 |
| 6032617 | Dual fuel engine which ignites a homogeneous mixture of gaseous fuel, air, and pilot fuel A method of operating an engine assembly having a cylinder assembly which defines a combustion chamber is disclosed. The method includes the steps of performing an intake stroke of the cylinder assembly and advancing a conditioning fuel into the combustio... | 03/07/2000 |
| 6003478 | Dual-fuel control/monitoring system A control box (11) for a dual-fuel internal-combustion engine (6) is actuated automatically by an oil-pressure switch (16) when activated by a manual switch (30) that directs power from a battery (29) or other engine-electrical component to a current dist... | 12/21/1999 |
| 5915365 | Combined system using a vaporous fuel mixture energy source and an internal combustion engine and method therefor A combined system and method is shown and described which uses a vaporous fuel mixture energy source comprised of air and a vaporous fuel as a source of fuel for an internal combustion engine. This mixture of air and vaporous fuel is injected into each on... | 06/29/1999 |
| 5890459 | System and method for a dual fuel, direct injection combustion engine A standard diesel injection system and a mechanical direct-gas injection system are selectively operable, in combination with a continuous pilot injection system, to provide a combustion system that is capable of operating in either a conventional diesel ... | 04/06/1999 |
| 5870978 | Dual fuel engine which utilizes valve lubricant as a pilot fuel An engine assembly includes a plenum member having an inlet opening and an outlet opening defined therein. The engine assembly further includes an air source in fluid communication with the inlet opening. The engine assembly still further includes a fuel ... | 02/16/1999 |
| 5868121 | Method and apparatus for relieving a differential pressure across a gaseous fuel admission valve of a dual fuel engine A fuel pressure relief system for a dual fuel engine including at least one gaseous fuel admission valve positioned between a gaseous fuel inlet region and an air intake region is provided. The system includes a first pressure sensor positioned in the gas... | 02/09/1999 |
| 5724242 | Method for producing production control software for a natural gas engine controller A method of operating a computer to automatically produce production control software for a natural gas engine controller (104) on a machine is provided. The controller (104) is adapted to control a natural gas engine (106). The method includes the steps ... | 03/03/1998 |
| 5664535 | Gas combustion engine, and method of manufacturing the gas combustion engine In a gas combustion engine, which is manufactured by conversion of a diesel engine, the piston shape, the compression ratio, the air intake system and the exhaust gas system are modified. The exhaust gas system is split into two parts, each of which consi... | 09/09/1997 |
| 5526786 | Dual fuel engine having governor controlled pilot fuel injection system A compression ignition engine can be quickly and easily converted into a dual fuel engine simply by adding a gaseous fuel supply system, by disconnecting the governor actuating lever from the throttle pedal, and by adding an electronic controller which co... | 06/18/1996 |
| 5499615 | Direct injection propane fuel system for diesel engine applications A liquid propane injection system for a diesel engine includes a liquid propane fuel tank, a pump, a heat exchanger, a reservoir, and an injector. The pump receives liquid propane from the liquid propane fuel tank, and increases the pressure of the receiv... | 03/19/1996 |
| 5487362 | Combustion engine of the piston engine type A combustion engine (1) of the piston engine type where the static compression ratio exceeds approximately 15:1, especially in the range of from approximately 15:1 to approximately 20:1, preferably approximately 17:1. The engine is provided with an igniti... | 01/30/1996 |
