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8146541 |
Method for improving transient engine operation
A method for operating an engine with a fuel reformer is presented. In one embodiment a method for operating an engine by injecting a gaseous fuel and a liquid fuel to at least an engine cylinder...
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8011094 |
Method of converting diesel engine to natural gas engine
A method of converting a diesel engine to a natural gas engine comprising inserting a spark plug into a diesel fuel injector opening in a cylinder head; installing a throttle body on the diesel...
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7913673 |
Method and apparatus for controlling liquid fuel delivery during transition between modes in a multimode engine
A method of transitioning between operating modes in a multimode engine including a diesel-only mode and a diesel pilot, gas mode includes first terminating or initiating the supply of a gaseous...
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7832381 |
Method of operating an internal combustion engine
A method for operating an internal combustion engine in the form of an Otto engine, especially of a motor vehicle, selectively uses carburetor fuel, especially gasoline or ethanol (E85) by direct...
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7793622 |
Method of operating a gas engine
A gas engine has a first fuel feed system, a second fuel feed system and a third fuel feed system. The gas engine is operated by introducing combustion air into a combustion chamber of the engine....
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7778761 |
Device for the control of an internal combustion engine operable with liquid and/or gaseous fuel
Presented is a device for controlling an internal combustion engine operable with at least on of liquid and gaseous fuel. The device includes a rotational speed controller that outputs a control...
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7765992 |
Fuel mixer
A path (24) is formed in an intake tube (6), which supplies external air to a reciprocating engine (4). External air flowing from an inlet port to an outlet port of the path (24). A gaseous fuel...
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7703528 |
Reducing CO2 emissions from oilfield diesel engines
A method of reducing CO2 emission from a wellsite diesel engine includes the steps of: providing the wellsite diesel engine operatively coupled to a wellsite apparatus for transmission of power...
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7703435 |
System and control method for selecting fuel type for an internal combustion engine capable of combusting a plurality of fuel types
A system and method for improving fuel usage of a dual fuel engine is described. Fuel type is delivered to engine cylinders in response to operating conditions.
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7690365 |
Fuel gas supply system and method of an LNG carrier
A fuel gas supply system of a vessel, such as an LNG carrier, is provided for supplying fuel gas to a high-pressure gas injection engine of an LNG carrier, wherein LNG is extracted from an LNG...
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7591253 |
Secondary fuel system for diesel engines
An engine system comprising a secondary fuel source for providing a secondary fuel, a metering valve for delivering the secondary fuel at a substantially pre-determined rate, an air intake, and an...
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7533634 |
Process for use with dual-fuel systems
A system and method is provided for use with a duel-fuel fumigation system. The system injects a gaseous-fuel flow into the air intake stream of a diesel engine. As presented, the system is...
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7506638 |
Fuel delivery system
A fuel delivery system for supplying liquid gas fuel to an engine is disclosed. The fuel can be supplied solely to the engine or together with diesel fuel. The fuel delivery system includes an...
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7503315 |
Method for controlling the fuel system for an internal combustion engine
A method of controlling the power of an internal combustion engine (1) comprising the following steps; in a first, lower power phase of operation of the engine (1), supplying a mixture of air (8)...
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7444986 |
Dual fuel engine
A dual fuel engine (2) is provided which is supplied with diesel fuel and at least one secondary fuel, such as LPG. The engine (2) has a plurality of cylinders (4, 6, 8, 10) in which pistons...
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7418954 |
Gaseous fuel and air mixer for an engine
A path (24) is formed in an intake tube (6), which supplies external air to a reciprocating engine (4). External air flowing from an inlet port to an outlet port of the path (24). A gaseous fuel...
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7373931 |
Method and apparatus for delivering two fuels to a direct injection internal combustion engine
An apparatus for delivering two fuels to a direct injection internal combustion engine comprises a liquid-fuel supply rail, a gaseous-fuel supply rail, a drain system with a shared drain rail for...
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7370666 |
Power system with computer-controlled fuel system
The present invention is a fuel-control system for a turbine which includes a programmable logic controller. The controller manages utility and stored natural gas sources using a surge tank and...
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7343895 |
Fuel injection system and method of operation for a gaseous fuelled engine with liquid pilot fuel ignition
A pilot fuel injection valve is mountable in a cylinder head of an engine and injects a liquid pilot fuel directly into a combustion chamber. The pilot fuel injection valve comprises a cooling...
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7308889 |
High pressure gaseous fuel supply system for an internal combustion engine and a method of sealing connections between components to prevent leakage of a high pressure gaseous fuel
A high-pressure fuel system supplies gaseous fuel to an internal combustion engine. Gaseous fuel pressure within the system is at least 17 MPa during normal operation. The system comprises a number...
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7305939 |
Addition of flexible fuel engine control system
The apparatus and method convert the fuel system of an internal combustion engine in a pre-existing (used) vehicle to operate on a mixture of fuels (like ethanol and gasoline) from a single fuel...
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7302918 |
Method and apparatus for providing for high EGR gaseous-fuelled direct injection internal combustion engine
A method and apparatus adjust pilot fuel injection timing in relation to a main fuel injection timing into a piston cylinder of an operating gaseous-fuelled direct injection internal combustion...
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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...
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7231930 |
Valve assembly cleaning device
A valve assembly cleaning device includes a conduit fluidly couples the liquid propane regulator and valve assembly to a propane tank. The cleaning system includes a first tube selectively coupled...
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7225763 |
Fumigation system for a diesel engine
A system and method is provided to reduce particulate and NOx emissions from diesel engines through the use of a duel-fuel fumigation system. The system injects a gaseous-fuel flow into the air...
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7207321 |
Fuel delivery system
A fuel delivery system for supplying liquid gas fuel to an engine is disclosed. The fuel can be supplied solely to the engine or together with diesel fuel. The fuel delivery system includes an...
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7174861 |
Method and apparatus for fueling an internal combustion engine
A combined gasoline and hydrogen fueling system for a gasoline-powered internal combustion engine, including, preferably, a rapid-start catalytic reformer for producing reformate gas containing...
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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...
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7117826 |
Pilot oil ignition gas engine and method of operating pilot oil ignition gas engine
The gas engine of the present invention has a pilot oil fuel valve, a pilot oil pump, and first and second pipes connected to a pilot oil main pipe, for each of a plurality of combustion chambers....
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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...
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7007661 |
Method and apparatus for controlling micro pilot fuel injection to minimize NOx and UHC emissions
The present invention provides a system that controls the amount and timing of pilot fuel injection to obtain minimum NOx and UHC emissions. The system senses if combustion occurs, when combustion...
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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...
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6990956 |
Internal combustion engine
An internal combustion engine, in which multiple kinds of fuels are fed to a cylinder from multiple fuel injectors each corresponding to each of multiple kinds of fuels at a target mixing ratio...
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6981472 |
Homogeneous charge compression ignition control utilizing plasmatron fuel converter technology
A method and apparatus for operation of an internal combustion engine running under a homogeneous charge compression ignition (HCCI) mode with fuel partially reformed by an onboard fuel reformer....
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6935282 |
Vehicle having an internal combustion engine and a fuel cell and method of making a vehicle
A vehicle includes an internal combustion engine and a fuel cell for supplying electric vehicle systems. The fuel cell is thermally “coupled” with the internal combustion engine. The waste heat of ...
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6863034 |
Method of controlling a bi-fuel generator set
A method is provided for controlling a bi-fuel generator set. The generator set includes a controller, a generator for generating electrical power, and an engine for driving the generator. A flow...
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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...
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6830026 |
Diagnostics system for tracing leaks from a gas-supply system and for checking operation of the valves forming part of said system
In a gas-supply system for supplying a generic engine of a vehicle type, comprising electronic control means for controlling delivery devices associated to various engines, said electronic control...
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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...
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6679221 |
Controlling the injection in a fuel system selectively operable with gasoline or fuel gas
A control method comprises the steps of: selectively supplying fuel gas to some cylinders of an engine on the basis of the power required from it; selecting the quantity of fuel gas supplied to...
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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...
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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...
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6550430 |
Method of operating a dual fuel internal
The combustion chamber of a high speed, two stroke or four stroke, internal combustion engine is provided with a generally homogeneous mixture of combustion air and two types of fuel, one having a...
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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...
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6386149 |
Method of operating an engine with a mixture of gaseous fuel and emulsified pilot fuel to reduce nitrogen oxide emissions
Reduction of nitrogen oxide emissions during operation of an engine is achieved by using a fuel mixture therein which includes a gaseous fuel and an emulsified pilot fuel. The method includes the...
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6371091 |
System for the intermittent and/or sequential introduction of a gaseous fuel
The system includes a metering valve for each cylinder including a main valve and an auxiliary valve. The auxiliary valve is electrically controlled ad via a mechanical, pressure controlled...
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6340005 |
Air-fuel control system
A method for controlling the air-fuel ratio in a natural gas engine having an air-fuel mixing device, comprises: determining a speed set-point and an actual engine speed, determining a fuel command...
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6328230 |
Fuel injector for an internal combustion engine
A fuel injector for an internal combustion engine includes a first injection valve having a first valve element that can be displaced in an axial direction and a first actuating device located...
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6325039 |
Combined engine and method for operating the same
The present invention relates to a combined engine which receives a drive output by means of supplying and combusting at least one fuel selected from among a gas fuel and a liquid fuel. The engine...
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6321694 |
Process for controlling the phase of switching of fuel in an internal-combustion engine designed to operate selectively with gasoline and gas
In an internal-combustion engine designed to operate selectively with gasoline or gas, after each switching of fuel the injectors of the fuel-supply system that has been activated are controlled...
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