The present disclosure relates to a pressure stabilizer, a gas engine system and a gas pressure control method. The pressure stabilizer includes: a housing, which comprises a gas intake chamber and a piston chamber, wherein a spacer is provided between the gas intake chamber and the piston chamber, and the spacer is provided with a spacer through hole; a piston, which is slidably disposed in the piston chamber and which is provided therein with a piston through hole passing through the piston; a spring disposed in the piston chamber, wherein the spring is disposed between the piston and the spacer; a gas outlet end cap, which is disposed at an open end of the piston chamber and which is provided with a gas outlet; and an electromagnetic coil, which is disposed at an end of the gas outlet end cap that is close to the piston, wherein the electromagnetic coil generates a magnetic field force for attracting the piston in an energized state, so as to attract the piston to approach the gas outlet end cap.

A dual-fuel fuel injection system for an internal combustion engine has a liquid fuel injection branch and a gas fuel injection branch, in which a gas injector assembly that is controllable via a control fluid is situated. The liquid fuel forms the control fluid of the gas injector assembly.

A fuel system is comprising: a fuel tank; an internal combustion engine; a fuel regulator fluidly connecting the fuel tank to the engine, the fuel regulator being configured to reduce the pressure of the fuel from a first fuel pressure at the fuel tank to a second fuel pressure at the engine; an air supply assembly configured to supply air from an air inlet to the engine, the air assembly comprising: a first air supply line fluidly connecting the air inlet and the engine, the first air supply line being in thermal communication with the fuel regulator; a second air supply line fluidly connecting the air inlet and the engine, the second air supply line being in parallel with the first air supply line; and an air valve configured to adjust the air flowing through at least one of the first air supply line and the second air supply line.

When a natural gas compressor completes its compression cycle, residual pressurized natural gas remains in the cylinders, valves, and conduits of the compressor. Gas leaks into the environment increasing greenhouse gas emissions and introducing safety concerns. The systems and methods herein provide ways for substantially reducing or eliminating leakage of natural gas to the atmosphere while the system sits idle between compression cycles.

Methods and systems are provided for a compressed natural gas fuel rail. In one example, a system comprises a device having a first volume for housing compressed natural gas and a second volume for housing lubricant, the first and second volumes arranged in a single housing and separated by a barrier. Lubricant flow from the second volume to the first volume may be adjusted by adjusting a pressure of the second volume so that a pressure difference between the second and first volumes is increased to increase lubricant flow or decreased to decrease lubricant flow.

A gas supply system for a high-pressure gas consuming appliance and a low-pressure gas consuming appliance of a floating structure including a tank containing the gas is disclosed. The supply system includes: a first supply circuit and a second supply circuit; a gas return line; and a first heat exchanger and a second heat exchanger configured to carry out a heat exchange between the gas of the first supply circuit and the gas circulating in the return line. The first supply circuit includes an additional pump.

System for adapting an internal combustion engine to be powered by gaseous fuel in gas phase and by gaseous fuel, an internal combustion engine arrangement comprising the system and a method for adapting an internal combustion liquid fuel engine to be powered by gaseous fuel in gas phase and gaseous fuel in liquid phase.

The invention relates to a metering valve (1) for a gaseous medium, in particular for a gaseous fuel, comprising a preferably planar valve seat element (2) having at least one flow-through opening (3) for the gaseous medium, a closing element (4) movable in a stroke-like manner and interacting in a sealing manner with the valve seat element (2) in order to release and close the at least one flow-through opening (3), and a corrugated or folding bellows (5) connected to the closing element (4) for delimiting a compensation space (6), which is connected to a pressure space (8) via a recess (7) formed in the closing element (4) so that the same gas pressure prevails in both spaces (6, 8) irrespective of the switched position of the metering valve (1). According to the invention, the compensation space (6) is arranged on the side of the closing element (4) facing the valve seat element (2) and is delimited in the axial direction by a pressure surface (10) which is formed on the closing element (4) or on a component connected to the closing element (4), in particular a flange component.

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.

A fuel supply system for the active purging of at least one antechamber of a spark-ignition internal combustion engine, using a gaseous fuel, the internal combustion engine comprising at least one main combustion chamber, which is connected to the at least one antechamber at least on the fuel side. An evaporator is disposed upstream from the at least one antechamber.