Abstract: The present invention relates to a fuel tank arrangement (100) for an internal combustion engine (2) of a vehicle, the fuel tank arrangement (100) comprising a fuel tank (101) for containing a combustible gas; wherein the fuel tank arrangement further comprises a combustible gas burning arrangement (106) for combustion of combustible gas, said combustible gas burning arrangement (106) being positioned in downstream fluid communication with the fuel tank (101) via a first conduit.

Abstract: A method of controlling an internal combustion engine with a plurality of cylinders includes injecting a first gaseous fuel, at a first pressure, into at least a first cylinder of the cylinders, in a first combustion mode, and simultaneously providing a second gaseous fuel, at a second pressure which is different than the first pressure, for at least a second cylinder of the cylinders, in a second combustion mode which is dissimilar to the first combustion mode, wherein the second cylinder is not the first cylinder.

Abstract: A method of controlling a high pressure gas injection internal combustion engine includes injecting, in a first combustion mode, by a first as injection system, a first gaseous fuel into a cylinder of the engine, and accumulating in a container of a second gas injection system excess gaseous fuel from the first fuel system, shifting, in the cylinder, from the first combustion mode to a second combustion mode including determining a value of an air flow related parameter indicative of an air mass flow into the cylinder, determining, based on the determined air flow related parameter value, a value of a fuel flow related parameter indicative of a mass flow of the excess gaseous fuel, and supplying from the container, in accordance with the determined fuel flow related parameter value, the excess gaseous fuel to provide a premix of air and the excess gaseous fuel to the cylinder.

Abstract: A method is provided for controlling a high pressure gas injection internal combustion engine including at least one cylinder, the method including supplying a first gaseous fuel from a first gas injection system and injecting the first gaseous fuel in at least one of the at least one cylinder. The method includes converting waste gas from the first gas injection system to a second fuel, and injecting the second fuel obtained by the conversion into at least one of said at least one cylinder.

Abstract: The present invention relates to a fuel tank arrangement (100) for an internal combustion engine (2) of a vehicle, the fuel tank arrangement (100) comprising a fuel tank (101) for containing a combustible gas; wherein the fuel tank arrangement further comprises a combustible gas burning arrangement (106) for combustion of combustible gas, said combustible gas burning arrangement (106) being positioned in downstream fluid communication with the fuel tank (101) via a first conduit.

Abstract: A method of controlling a high pressure gas injection internal combustion engine includes injecting, in a first combustion mode, by a first as injection system, a first gaseous fuel into a cylinder of the engine, and accumulating in a container of a second gas injection system excess gaseous fuel from the first fuel system, shifting, in the cylinder, from the first combustion mode to a second combustion mode including determining a value of an air flow related parameter indicative of an air mass flow into the cylinder, determining, based on the determined air flow related parameter value, a value of a fuel flow related parameter indicative of a mass flow of the excess gaseous fuel, and supplying from the container, in accordance with the determined fuel flow related parameter value, the excess gaseous fuel to provide a premix of air and the excess gaseous fuel to the cylinder.

Abstract: A method is provided for controlling a high pressure gas injection internal combustion engine including at least one cylinder, the method including supplying a first gaseous fuel from a first gas injection system and injecting the first gaseous fuel in at least one of the at least one cylinder. The method includes converting waste gas from the first gas injection system to a second fuel, and injecting the second fuel obtained by the conversion into at least one of said at least one cylinder.

Abstract: A method of controlling an internal combustion engine with a plurality of cylinders includes injecting a first gaseous fuel, at a first pressure, into at least a first cylinder of the cylinders, in a first combustion mode, and simultaneously providing a second gaseous fuel, at a second pressure which is different than the first pressure, for at least a second cylinder of the cylinders, in a second combustion mode which is dissimilar to the first combustion mode, wherein the second cylinder is not the first cylinder.

Abstract: An arrangement in a vehicle engine includes an intake air manifold, an exhaust gas manifold and a plurality of cylinders, and is adapted for being operated by a dual fuel including diesel and gas fuel. The arrangement further includes an exhaust gas recirculation line connecting the exhaust gas manifold with the intake, air manifold, an exhaust gas recirculation valve arranged in the exhaust gas recirculation line, and a control unit arranged for controlling the operation of the exhaust gas recirculation valve. The arrangement further includes a knock sensor arranged on the engine and connected to the control unit; the control unit being adapted for opening the exhaust gas recirculation valve in the event that knock is detected by the knock sensor. The arrangement can permit a dual fuel engine to be used with methane gas having a wide variety of methane numbers without causing the engine to knock.

Abstract: A method of selecting between two operation modes in a dual fuel internal combustion engine of the diesel-type is provided. The engine includes a combustion chamber at least partly delimited by a piston, a first fuel supply for a first fuel, the first fuel supply being located in or at the combustion chamber and/or in or at an inlet port thereof, and a second fuel supply for a second fuel. The engine has two different operation modes, both operation modes including the steps of pre-mixing the first fuel in the combustion chamber and/or in the inlet port, compressing the charge containing the first fuel to conditions that allow auto-ignition of the second fuel, performing a first injection of the second fuel into the combustion chamber to initiate auto-ignition of the second fuel, thereby initiating conditions for combustion of the fuel remaining in the combustion chamber after auto-ignition of the second fuel.

Abstract: A method of operating a dual fuel internal combustion engine of the diesel-type is provided. The method includes pre-mixing a first fuel in a combustion chamber and/or in an inlet port, compressing a charge containing the first fuel to conditions that allow auto-ignition of a second fuel, performing a first injection of the second fuel into the combustion chamber to initiate auto-ignition of the second fuel for igniting the first fuel, thereby initiating conditions for pre-mixed flame propagation combustion of the first fuel. At least one subsequent injection is performed in which additional kinetic energy is supplied into the combustion process to thereby enhance turbulence intensity and propagation speed of the flame and/or enhance late mixing in the combustion chamber, so a to improve late oxidation during combustion. A dual fuel combustion engine of the diesel engine type.

Abstract: A method of operating a dual fuel internal combustion engine of the diesel-type is provided, the engine including a combustion chamber being at least partly delimited by a piston, a first fuel supply for a first fuel, the first fuel supply being located in or at the combustion chamber and/or in or at an inlet port thereof, and a second fuel supply for a second fuel. The method includes pre-mixing the first fuel in the combustion chamber and/or in the inlet port, compressing the charge containing the first fuel to conditions that allow auto-ignition of the second fuel, performing a first injection of the second fuel into the combustion chamber to initiate auto-ignition of the second fuel for igniting the first fuel, thereby initiating conditions for pre-mixed flame propagation combustion of the first fuel.

Abstract: A method of selecting between two operation modes in a dual fuel internal combustion engine of the diesel-type is provided. The engine includes a combustion chamber at least partly delimited by a piston, a first fuel supply for a first fuel, the first fuel supply being located in or at the combustion chamber and/or in or at an inlet port thereof, and a second fuel supply for a second fuel. The engine has two different operation modes, both operation modes including the steps of pre-mixing the first fuel in the combustion chamber and/or in the inlet port, compressing the charge containing the first fuel to conditions that allow auto-ignition of the second fuel, performing a first injection of the second fuel into the combustion chamber to initiate auto-ignition of the second fuel, thereby initiating conditions for combustion of the fuel remaining in the combustion chamber after auto-ignition of the second fuel.

Abstract: Process which, by spray-controlled, directly injected combustion with the aid of step-by-step technical development of the whole of the combustion system, achieves an intensified mixing process during injection and after-burning, which speeds up soot oxidation during various stages so effectively that the engine can be run with sufficiently high EGR content for desired NOx and soot content down to ultra-low emissions, at the same time as parameters which control the efficiency are decoupled from measures for desired emission level, thereby enabling optimum efficiency to be attained for the process.

Abstract: A multiple barrel launcher for simultaneous launching of a number of projectiles by means of gas generated by a propellant charge placed in a pressure cartridge in communication with said barrels via a pressure chamber, wherein the communication comprises channels between each of the barrels and the pressure chamber, each of these channels being so dimensioned in relation to the charge that a critical driving gas flow velocity is obtained during the launching course.