Abstract: A hydrogen power system includes a hydrogen engine that operates using hydrogen as an energy source, a hydrogen tank that stores liquid hydrogen, and a hydrogen pump that pumps up the liquid hydrogen from the hydrogen tank and outputs it to the hydrogen engine, A hydrogen pump, a part of which slides within the hydrogen tank, and a controller, and the controller stops driving the hydrogen pump when it is determined that the efficiency of the hydrogen pump is decreasing, and then, after a prescribed wait time has elapsed, the hydrogen pump is driven again.

Abstract: In a general aspect, gaseous fuels are blended. In some cases, a fuel blending method includes receiving a flow of a first gaseous fuel in a first flow path of a fuel blending system and receiving a flow of a second gaseous fuel from a second fuel source in a second flow path of the fuel blending system. The heating value of the second gaseous fuel is lower than the heating value of the first gaseous fuel. The first and second gaseous fuels are combined from the first and second flow paths to form a blended gaseous fuel in a third flow path. A heating value of the blended gaseous fuel is measured, and the flow of the first gaseous fuel in the first flow path is adjusted to modify a content of blended gaseous fuel. The blended gaseous fuel can be provided, for example, to an energy conversion system.

Abstract: A hydrogen-oxygen cycle engine. The hydrogen-oxygen cycle engine comprises a cylinder assembly, a hydrogen supply assembly, an oxygen supply assembly, a cycling medium assembly, an atomized water assembly, a condensate water recovery assembly and a control system. Said engine has the advantages of reasonable structural design, high automation degree, no carbon emission, etc., and can thoroughly solve the problem of environmental pollution. Also provided is a using method for the engine.

Abstract: A system and method for adjusting primary fuel, when blending of primary fuel and secondary fuel is disabled, is provided. The method includes disabling, at a blend disabling angle, blending of primary fuel and secondary fuel for the DGB; determining whether the secondary fuel has been injected for a current cycle for a cylinder prior to the blend disabling angle; in response to determining that the secondary fuel has been injected for the current cycle prior to the blend disabling angle, injecting a pilot shot of the primary fuel for the current cycle; and in response to determining that the secondary fuel has not been injected for the current cycle prior to the blend disabling angle, injecting a full shot of the primary fuel for the current cycle.

Abstract: Provided are; a fuel supply control device capable of preventing damage on components caused by LNG fuel in a liquid state; and a vehicle. The fuel supply control device is for controlling selective supply, to an engine, of either LNG fuel or CNG fuel stored in separated tanks, and is provided with: a determination unit for determining whether warming up of the engine is completed after start of the engine; and a control unit that performs CNG fuel supply control for supplying CNG fuel to the engine when the warming up of the engine is not yet completed, and performs LNG fuel supply control for supplying vaporized LNG fuel to the engine when the warming up of the engine is completed.

Abstract: A dual fuel system for an internal combustion engine includes a plurality of fuel injectors, a first fuel pump and a first fuel conduit extending to the plurality of fuel injectors, and a second fuel pump and a second fuel conduit extending to a fuel manifold fluidly connected to the plurality of fuel injectors. The dual fuel system also includes an overflow buffer arranged to receive a volume of the second fuel expelled from the second fuel conduit, and a valve movable from a closed position to an open position fluidly connecting the overflow buffer to the second fuel conduit. Expelling fuel from the second fuel conduit enables a rapid pressure drop in a supply pressure of the second fuel to hasten switchover of the internal combustion engine between fuel type.

Abstract: An engine includes an engine body assembly and an air intake system including an air plenum. The air plenum is positioned above the engine body assembly. The engine includes an air plenum support bracket having an upper arm coupled to the air plenum and a lower arm coupled to the engine body assembly. The engine also includes a vibration isolator coupled to the air plenum support bracket and interposed between the air plenum and the engine body assembly, thereby inhibiting engine vibrations from transferring to the air plenum.

Abstract: An engine oil pan has side walls and bottom wall that define an oil reservoir. The bottom wall has a plurality of attachments positions and oil drain plug with an open end below the lowest portion of the bottom wall. An oil pickup is secured to the bottom wall at the plurality of attachment positions. The plurality of attachment positions have threaded inwardly and outwardly projecting portions for receiving threaded fasteners.

Abstract: An opposed-piston engine is configured to use hydrogen fuel. The opposed-piston engine has at least one cylinder and a pair of pistons disposed for opposed motion in a bore of the cylinder. Hydrogen fuel is directly side-injected into the cylinder in a compression stroke of the opposed-piston engine, mixed with charge air in the cylinder, and auto-ignited in a combustion chamber formed in the cylinder between the pistons during the compression stroke. A method of operating the hydrogen opposed-piston engine includes switching between a first ignition mode using an externally-generated ignition impulse to ignite the mixture of hydrogen fuel and charge air, and a second ignition mode using compression to ignite the mixture.

Abstract: A canister includes two or more chambers in which an adsorbent configured to adsorb an evaporated fuel is placed, a case, an inflow port, an atmosphere port, and outflow port. The case forms a main chamber that is one of the two or more chambers. The inflow port and the outflow port are provided to a first end of the main chamber. The case includes at least one reduced part that is a wall-like part forming an area in the main chamber in the vicinity of the first end. In the at least one reduced part, an area of a cross-section of the main chamber orthogonal to flow directions of a fluid is reduced towards the first end.

Abstract: 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.

Abstract: A rotatable bypass assembly for use with a high-pressure fuel system is provided. The rotatable bypass assembly can include a collar with a first mounting point. The first mounting point can include a first stop face and a second stop face. The rotatable bypass assembly has a bypass block with a fuel barb. The fuel barb of the bypass block is rotatable between, at least, the first stop face and the second stop face.

Abstract: A cover member covering a portion to which a component of an engine is attached includes: a front plate opposed to the portion; a first side plate located at one of both side edges of the front plate and including a first flexible portion protruding outward in the width direction and deflected inward by pressing inward, and a first tab protruding outward from the first flexible portion; a bottom plate located at a bottom edge of the front plate and including a second tab protruding toward the bottom side in the height direction, and a second flexible portion partially protruding toward the bottom side and deflected toward the top side by pressing toward the top side; a first restraining plate located at the top edge of the front plate; and a second side plate located at the other side edge of the front plate and including a second restraining plate.

Abstract: A leakage detection device is configured to perform leakage detection in a positive crankcase ventilation passage including at least a fresh air line configured to allow a communication between a crank chamber and an intake passage that constitute an engine. The leakage detection device includes a pressure sensor, a leakage determination unit, and a shut-off mechanism. The pressure sensor is configured to communicate with the positive crankcase ventilation passage and to detect a pressure in the positive crankcase ventilation passage. The leakage determination unit is configured to determine whether leakage occurs in the positive crankcase ventilation passage, based on the pressure in the positive crankcase ventilation passage when the positive crankcase ventilation passage is closed. The shut-off mechanism is configured to shut the pressure sensor off from the positive crankcase ventilation passage except when whether leakage occurs is determined.

Abstract: A piston for an opposed-piston, internal combustion engine includes a crown with an end surface having a bowl shaped to form a combustion chamber with an end surface of an opposing piston in the opposed-piston engine. A substantially circumferential top land of the crown meets the end surface at a substantially circular peripheral edge, and a skirt comprising a sidewall extends from a substantially circumferential belt region of the crown. A wristpin bore with a wristpin axis opens through the sidewall. The end surface of the piston includes a pair of injection regions across which fuel is injected into the bowl. The injection regions are disposed in substantially diametrically-opposed quadrants of the end surface which are defined by the wristpin axis and a connecting rod envelope axis substantially orthogonal to the wristpin axis. Each injection region extends along a respective arc concentric with the substantially circular peripheral edge.

Abstract: A cooling system for a vehicle including an air duct having an inlet funnel configured to connect to a vehicle grill, a heat-exchanger seat defining an outlet window, and an upper panel extending from the inlet funnel over top of the outlet window. The upper panel defines an intake. At least one heat exchanger is received on the heat-exchanger seat. A cooling fan assembly is disposed under the at least one heat exchanger and includes a shroud and a fan.

Abstract: A flow rate control valve is configured to adjust a flow rate of blow-by gas drawn into an intake passage from a crankcase of an internal combustion engine that uses hydrogen as fuel. The flow rate control valve includes a flow rate adjuster having a valve member. The flow rate adjuster has a cross-sectional flow area in a section through which the blow-by gas passes. The cross-sectional flow area is changed in accordance with movement of the valve member. The flow rate control valve is configured such that the cross-sectional flow area is maximized when a load on the internal combustion engine is less than or equal to that in an idling operation state.

Abstract: The present disclosure relates to a heat radiator and a turbo fracturing unit comprising the same. The heat radiator includes: a cabin; a heat radiation core disposed at the inlet and configured to allow a gas/air to pass therethrough; a gas/air guide device disposed at the outlet and configured to suction the air within the cabin to the outlet; and noise reduction structure disposed within the cabin, which is of a structure progressively converging to the outlet. The heat radiator is configured to enable the gas/air to enter the cabin via the inlet, then sequentially pass through the heat radiation core, a surface of the noise reduction structure and the gas/air guide device, and finally be discharged out of the cabin. The heat radiator according to the present disclosure is a suction-type heat radiator which can regulate the speed of the gas/air guide device based on the temperature of the gas/air at the inlet, thereby avoiding energy waste and unnecessary noise.

Abstract: Provided is an engine control device for controlling an opening degree of a valve adjusting a flow rate of an air-fuel mixture of an engine, wherein the opening degree is corrected based on an exhaust temperature deviation which is a deviation between a reference value and a current value of an exhaust temperature when controlling the opening degree.

Abstract: A fluidic connection and fluid heating device for a fluid circuit, in particular for a motor vehicle, the device comprising a one-piece tubular body of plastic or composite material comprising at least one internal annular surface defining a fluid flow duct from an inlet to an outlet of the body and at least one external annular surface extending around the duct and on which is located at least one resistive heating element, wherein the resistive heating element is a resistive circuit which is formed in situ on the annular surface.