An injector for injecting a fluid includes a base body having an opening and a sealing seat, a spray-orifice disk having at least one spray orifice, and a clamping ring, the spray-orifice disk being disposed in the opening of the base body, and a first nonpositive connection is provided between the spray-orifice disk and the base body, and a second nonpositive connection is provided between the base body and the clamping ring.

A fuel injector for supplying fuel to a fuel consuming devise includes a fuel inlet for receiving the fuel, a nozzle tip for dispensing the fuel from the fuel injector, a conduit for communicating the fuel from the fuel inlet to the nozzle tip, a valve seat, and a valve selectively seatable and unseatable with the valve seat for selectively preventing and permitting fuel flow out of the nozzle tip. The nozzle tip includes a non-circular recess on a downstream side thereof and a metering hole on an upstream side thereof opening into the non-circular recess to allow fuel to exit the nozzle tip, the metering hole having a smaller area than the non-circular recess.

A mist forming method using a fluid injection valve formed of a valve seat, a valve body, and a nozzle portion or an injection hole plate having injection holes, and configured to turn in-hole flows and flows immediately below the injection holes into substantially liquid film flows. Directions of jets from the injection holes are not necessarily brought into coincidence with a center axis direction of the injection holes and are not necessarily crossed with one another in a downstream part, and after the jets turned into mists at a position downstream of a break length position, the mists are allowed to come close or gather by the Coanda effect so as to appear substantially as one solid mist, and allowed to keep gathering until catching of ambient air and a resulting air flow along a downstream flow direction in a predetermined in-mist portion attenuate.

A nebulization structure includes a driving element, a structure plate and a nebulization plate. The structure plate is installed on a side of the driving element, and the structure plate is substantially in a circular disc shape and has a plurality of through holes, and at least one rib is formed between adjacent through holes to define a water guide passage. The nebulization plate is clamped between the driving element and the structure plate and made of a polymer material to overcome the problems of having easy metal fatigue and embrittlement of the nebulization plate made of metal, and being corroded by corrosive liquids.

A front atomization structure of a single-hole atomization fuel injector comprises a tube, an installation sleeve, a valve base, a flow splitter, an overflow member, a rotating flow member, and a metering member. Splitting recesses are arranged at the flow splitter to split a flow into a plurality of streams. An overflow hole is arranged at the overflow member to further limit the stream of the split flow. A rotating flow hole and a rotating flow recess are arranged at the rotating flow member. Upon passing the rotating flow recess, the stream of the split flow impacts a bottom portion of the rotating flow recess blocked by the metering member to form a turbulent stream which converges toward the rotating flow hole. Also provided is a single-hole fuel atomization and injection device.

A liquid fuel injector such as for a dual fuel system in an internal combustion engine includes two-way injection control valves for controlling twin outlet checks. A first set of orifices are arranged in an A-F-Z pattern, and a second set of orifices are arranged in an A-F-Z pattern, within the fuel injector, among a high-pressure inlet passage, a low-pressure space, and first and second outlet check control chambers, respectively. A common nozzle supply cavity is fluidly connected to the high-pressure inlet passage and supplies each of two sets of nozzle outlets opened and closed by the twin outlet checks.

A fuel injector is provided. The fuel injector includes a sleeve having a first end proximate an outlet; a piston slidingly received in the sleeve, the piston having a first end proximate the outlet; a pumping chamber at least partially defined by the sleeve between the first end of the piston and the outlet; and a normally-open inlet valve through which fuel passes to enter the pumping chamber.

A fuel injector is provided that includes various precise configuration parameters, including dimensions, shape and/or relative positioning of fuel injector features, resulting in improved efficiency of fuel flow through the fuel injector.

Embodiments are directed to fuel injectors for internal combustion engines (e.g. engines with reciprocating pistons and with compression-ignition or spark-ignition, Wankel engines, turbines, jets, rockets, and the like) and more particularly to improved nozzle configurations for use as part of such fuel injectors. Other embodiments are directed to enabling fabrication technology that can provide for formation of nozzles with complex configurations and particularly for technologies that form structures via multiple layers of selectively deposited material or in combination with fabrication from a plurality of layers where critical layers are planarized before attaching additional layers thereto or forming additional layers thereon. Other embodiments are directed to methods and apparatus for integrating such nozzles with injector bodies.

A front facing atomization structure of a single-hole atomization fuel injector device comprises a tube, an installation sleeve, a valve base, a flow splitter, an overflow member, a rotating flow member, and a metering member. Splitting recesses are arranged at the flow splitter to split a flow into a plurality of streams. An overflow hole is arranged at the overflow member to further limit the stream of the split flow. A rotating flow hole and a rotating flow recess are arranged at the rotating flow member. Upon passing the rotating flow recess, the stream of the split flow impacts a bottom portion of the rotating flow recess blocked by the metering member to form a turbulent stream which converges toward the rotating flow hole. Also provided is a single-hole fuel atomization and injection device.