A prechamber assembly includes a prechamber combustion volume located within a cylinder head, wherein the prechamber combustion volume includes a wall extending between a first end and a second end and a prechamber axis, an injector including a fuel passage in communication with the first end of the prechamber combustion volume, a throat in communication with the second end of the prechamber combustion volume, wherein the throat includes a throat axis extending between the prechamber combustion volume and a plurality of jets, and wherein the throat axis and the prechamber axis form an angle.

The invention relates to a fuel injector arrangement (1) comprising a number of fluid supply paths (29, 31, 39), namely, a first (29), a second (31) and a third fluid supply path (39). The fuel injector arrangement (1) has a first switching device (43) in the second fluid supply path (31). Said first switching device, controlled by the fluid pressure in the third fluid supply path (39), opens or blocks the second fluid supply path (31). The fuel injector arrangement (1) has a second switching device (49) in the first fluid supply path (29). Said second switching device, controlled by the fluid pressure downstream of the first switching device (43) in the second fluid supply path (31), opens or blocks the first fluid supply path (29).

A gas injection valve for injecting a combustible gas into an internal combustion engine, comprising a valve element, which can be moved between closed position and an open position, the open position being defined by a maximum stroke of the valve element. The maximum stroke of the valve element can be adjusted during operation of the gas injection valve.

The invention relates to a fuel injector arrangement (1) comprising a number of fluid supply paths (29, 31, 39), namely, a first (29), a second (31) and a third fluid supply path (39). The fuel injector arrangement (1) has a first switching device (43) in the second fluid supply path (31). Said first switching device, controlled by the fluid pressure in the third fluid supply path (39), opens or blocks the second fluid supply path (31). The fuel injector arrangement (1) has a second switching device (49) in the first fluid supply path (29). Said second switching device, controlled by the fluid pressure downstream of the first switching device (43) in the second fluid supply path (31), opens or blocks the first fluid supply path (29).

A system may include a magnetic shape memory (MSM) element having a long axis that extends from a first end of the MSM element to a second end of the MSM element. The system may further include a first solenoid, where a longitudinal axis of the first solenoid is positioned at a first angle relative to the long axis of the MSM element. The system may also include a second solenoid, where a longitudinal axis of the second solenoid is positioned at a second angle relative to the long axis of the MSM element and at a third angle relative to the longitudinal axis of the first solenoid, where the longitudinal axis of the first solenoid and the longitudinal axis of the second solenoid are not parallel.

A gas injection valve includes a poppet valve extending from a valve body having a valve seat, a plunger moveable within a plunger body, a plunger stop axially moveable within a plunger stop enclosure formed within a plunger stop body secured within the valve body adjacent to the plunger body, a plunger follower secured to and extending through the plunger stop and in contact with the poppet valve, and a port for receiving hydraulic fluid extending through the valve body into the plunger stop body enclosure. The plunger stop is moveable between a first position and a second position. The gas injection valve has a first stroke length when the plunger stop is in the first position and a second stroke length when the plunger stop is in the second position.

A fuel valve includes a housing, a nozzle with nozzle holes opening to a volume inside the nozzle at the front end of the housing, a gaseous fuel inlet port in the housing connected to high pressure gaseous fuel, an axially displaceable valve needle received in a longitudinal bore in the housing, and rests on a valve seat in a closed position and has lift from the valve seat in an open position, the valve seat placed between a fuel chamber and an outlet port, the fuel chamber connected to the fuel inlet port, the outlet port connected to the volume in the nozzle, an actuator system for moving the needle between the closed and open positions, an ignition liquid inlet port connected to high pressure ignition liquid, and a conduit connecting the ignition liquid inlet port to the fuel chamber, the conduit including a fixed flow restriction.

An injection device for metering a fluid, having the following: a valve, which has a valve needle and a valve seat; a nozzle shaft, which surrounds the valve needle and which holds a volume of the fluid; and an inlet chamber, which adjoins the nozzle shaft on the side of the nozzle shaft facing away from the valve and which has a flow connection to the nozzle shaft. The injection device has at least one compressible volume compensation element, which is filled with a gas and which, within the injection device, is in contact with the fluid.

A gas injection valve includes a poppet valve extending from a valve body having a valve seat, a plunger moveable within a plunger body, a plunger stop axially moveable within a plunger stop enclosure formed within a plunger stop body secured within the valve body adjacent to the plunger body, a plunger follower secured to and extending through the plunger stop and in contact with the poppet valve, and a port for receiving hydraulic fluid extending through the valve body into the plunger stop body enclosure. The plunger stop is moveable between a first position and a second position. The gas injection valve has a first stroke length when the plunger stop is in the first position and a second stroke length when the plunger stop is in the second position.

A dual-fuel injection system having a combustion gas-supply device and a liquid fuel-supply device, including a combustion gas-injector unit with a liquid fuel-control part and a gas nozzle part, to which combustion gas can be supplied. The stroke of a gas nozzle needle of the combustion gas-injector unit can be controlled by liquid fuel supplied to the liquid fuel-control part. The combustion gas-injector unit defines a leakage collecting space, via which a leakage path is lead, the leakage path extending from the liquid fuel-control part into the gas nozzle part. The dual-fuel injection system has a pressure-regulating device, by which a defined pressure level can be set in the leakage collecting space. An implementation method using such a dual-fuel injection system is also proposed.