Provided device for producing Hydrogen-enriched slush LNG fuel includes a vortex tube with a vortex chamber formed inside, a plurality of radial inlets installed on an outer surface of the vortex chamber through which a mixed fluid flows, a swirl generator provided inside the vortex chamber for the mixed fluid to flow inside the vortex tube and to cause a clockwise swirl motion, and a nozzle formed on the left side of the swirl generator, wherein a flow field is formed when pressure decreases to the left direction and pressure increases in the right direction from the central axis of the vortex tube, the high-temperature fluid discharges through the main tube to the right end of the vortex tube, and the low-temperature fluid discharges through the low-temperature fluid vent on the left side of the vortex tube.

A hydro-diesel engine system, including: (a) a hydrogen gas supply and a liquid diesel fuel supply; (b) a bubbilizer configured to agitatedly mix some of the hydrogen gas into diesel fuel to form a mixture of small bubbles of hydrogen gas in the liquid diesel fuel which is then sent into a hydro-diesel engine; together with (c) a system for chemically mixing some of the hydrogen gas with the diesel fuel prior to the diesel fuel entering the bubbilizer.

A fuel booster system having a fuel inlet port, a fuel outlet port, and a fuel accumulator fluidically coupled to both ports. The fuel inlet port allows fuel to be delivered to the fuel accumulator and the fuel outlet port is in fluid communication with a combustion engine to deliver fuel from the fuel booster system to the combustion engine. A source of pressurized gas is also fluidically coupled to the fuel accumulator to deliver pressurized gas through a gas port in one end of the fuel accumulator. A piston is located within the fuel accumulator and the source of pressurized gas can be discharged into the fuel accumulator to force accumulated fuel from the fuel accumulator and to the engine when the fuel booster system determines that the engine needs more fuel.

A system for enhancing diesel fuel combustion; including: a liquid diesel fuel source; a hydrogen gas source; an oxygen source; and either (a) a mixer configured with inputs to receive each of the liquid diesel fuel, hydrogen gas and oxygen gas therein, wherein the mixer is a cylindrical container having an entrance funnel and an exit funnel, or (b) tube infuser having a liquid-gas mixing chamber with a volume up to 10 Gal, and a dwell time from gas additive/fuel mixing in the range of 15 minutes. Passive and active agitation structures are also included to facilitate mixing.

A supplemental fuel system for a machine with an engine is configured to monitor a voltage of a power supply of the machine based on voltage data acquired by a voltage sensor where the power supply is configured to receive power from an alternator driven by the engine, compare the voltage to a voltage threshold, and control an electronic lock off valve positioned between a supplemental fuel tank and an air supply system for the engine such that the electronic lock off valve is (i) closed to prevent a supplemental fuel from being provided from the supplemental fuel tank to the to the air supply system in response to the voltage being less than the voltage threshold and (ii) open or openable to permit the supplemental fuel to be provided to the air supply system in response to the voltage being greater than the voltage threshold.

A dual fuel system includes a fuel injector having a fuel pressurization plunger, and a fueling control unit structured to determine a fuel bulk modulus term based upon a volume change value (dV) and a pressure change value (dP) for a fuel pressurized in the fuel injector. The fueling control unit is further structured to determine fuel injector control commands by way of map lookups on fueling maps selected on the basis of the fuel bulk modulus term. Related apparatus and methodology are also disclosed.

A dual fuel system includes a fuel injector having a fuel pressurization plunger, and a fueling control unit structured to determine a fuel bulk modulus term based upon a volume change value (dV) and a pressure change value (dP) for a fuel pressurized in the fuel injector. The fueling control unit is further structured to determine fuel injector control commands by way of map lookups on fueling maps selected on the basis of the fuel bulk modulus term. Related apparatus and methodology are also disclosed.

[Problem] To prevent an abnormality of an engine that may occur due to switching from a first fuel to a second fuel.

[Solution] The engine system 100 includes an engine 1 that is capable of switching between a first mode in which a first fuel is combusted and a second mode in which at least a second fuel out of the first fuel and the second fuel is combusted, a first fuel supplier 6 that supplies the first fuel to the engine 1, a second fuel injection device 43 that supplies the second fuel to the engine 1, an air-fuel ratio controller 23 that controls the air-fuel ratio, a controller 7 that controls the first fuel supplier 6, the second fuel injection device 43, and the air-fuel ratio controller 23, and an acceptor 92 that accepts an instruction for the controller 7. When the acceptor 92 accepts an instruction for transition from the first mode to the second mode, the controller 7 executes self-diagnosis of at least one of the first fuel supplier 6, the second fuel injection device 43, and the air-fuel ratio controller 23 while maintaining the operation in the first mode, and determines whether to transition to the second mode based on a result of the self-diagnosis.

A fuel system for a machine with an engine is configured to monitor a voltage of a power supply of the machine based on voltage data acquired by a voltage sensor where the power supply is configured to receive power from an alternator driven by the engine, compare the voltage to a voltage threshold, and control an electronic lock off valve associated with a fuel tank such that the electronic lock off valve is (i) closed to prevent a fuel from being provided from the fuel tank to the to the engine in response to the voltage being less than the voltage threshold and (ii) open or openable to permit the fuel to be provided to the engine in response to the voltage being greater than the voltage threshold.