A fuel injector nozzle comprising a plurality of holes formed therethrough connecting one side of the nozzle with an opposite side of the nozzle. Each of the holes comprises a hole entry on the one side of the nozzle having a first shape, a hole exit on the opposite side of the nozzle having a second shape, and a hole wall connecting the hole entry to the hole exit. The hole exit is smaller than the hole entry, and the hole wall comprises a side that is continuously curved from the hole entry to the hole exit.

An objective of the present invention is to provide a fuel rail that can be used at a high fuel pressure of 50 MPa or more, for example, has good engine mountability, and has improved material yield. The present invention is regarding a fuel rail including a main pipe portion 10 extending in a longitudinal direction and a plurality of distribution pipe portions 20a, 20b, 20c, and 20d branching from the main pipe portion in a cross direction, in a fuel supply system in which a fuel compressed by a fuel pump passes through a fuel passage hole of the fuel rail fixed to an engine trough a bracket or a stay, the fuel is supplied to injectors, and the fuel is injected into the engine, the present invention is to cut and form the main pipe portion 10 and the plurality of distribution pipe portions 20a, 20b, 20c, and 20d from a same single-sheet plate 100, the single-sheet plate being a plane plate or a flat plate having an irregular shape in cross section, and to seamlessly configure a main pipe hole 11, distribution pipe holes 21a, 21b, 21c, and 21d, and injector attaching holes 22a, 22b, 22c, and 22d, without joints.

A method of fabricating a nozzle that includes casting and curing a first material using a patterned nip roller to form a first microstructured pattern of discrete microstructures, deforming at least one of the discrete microstructures; replicating the first microstructured pattern, including the at least one deformed discrete microstructure, in a second material different than the first material to make a replicated structure comprising a plurality of blind holes formed in the second material, removing second material of the replicated structure to expose tops of microstructures in the first microstructured pattern, and removing the first material from the replicated structure, resulting in a nozzle having a plurality of through-holes in the second material and corresponding to the first microstructured pattern.

An assembly at least comprising a fuel injector for dual fuel operation of an internal combustion engine. The assembly includes a nozzle holder defining a fuel circuit and provided with a nose adapted in use to be in connection with a combustion space of an internal combustion engine, and first and second nozzles in communication with the fuel circuit in the nozzle holder for directly injecting liquid fuel into the combustion space of the internal combustion engine for ignition of a combustible mixture present in the combustion space. The first and second nozzles adjacent to the nose of the nozzle holder are interconnected by a cooling channel. At each actuation of a fuel pump upstream of the first and second nozzles, substantially a full volume of fuel pumped during actuation of the fuel pump is allowed to flow through the cooling channel and via the first and second nozzles.

The present application concerns a fuel-injection metering device for a motor vehicle. The fuel-injection device include a main body with at least one through-hole, whereby the main body forms a valve seat on its inner face that is provided to interact with a valve body, whereby the inner face of the main body is electrochemically machined. The application also concerns a mould, a production method, and a fuel-injection nozzle.

An apparatus for processing a micro-component by using laser which defines a hole by using laser irradiated to a surface of an object to be processed, the apparatus includes a laser irradiation part irradiating the laser, an optical axis horizontal movement part horizontally moving an optical axis of the laser irradiated from the laser irradiation part, an optical axis angle adjustment part adjusting an angle of the optical axis of the laser horizontally moved by the optical axis horizontal movement part, a reflection part reflecting the laser of which the angle of the optical axis is adjusted by the optical axis angle adjustment part, and a light collecting lens collecting the laser reflected by the reflection part on the surface of the object to be processed.

Embodiments of the apparatus relate to a tool configured to repair and recondition a fuel injector seat. The tool includes a body having a working end and a rotary end, a rod extending through the body, wherein a first portion of the rod is exposed at or near the rotary end and a second portion of the rod is exposed at or near the working end, and a machining bit attached to the rod at or along the second portion of the rod, wherein the machining bit is configured to perform work on a fuel injector seat.

The present application concerns a fuel-injection metering device for a motor vehicle. The fuel-injection device include a main body with at least one through-hole, whereby the main body forms a valve seat on its inner face that is provided to interact with a valve body, whereby the inner face of the main body is electrochemically machined. The application also concerns a mold, a production method, and a fuel-injection nozzle.

A fuel distributor rail for a fuel injection system for an internal combustion engine in motor vehicles, in particular for gasoline engines. The fuel distributor rail comprises a main tube, wherein the main tube has a fuel channel extending in the longitudinal direction of the main tube. The main tube comprises at least two outlet openings, wherein the outlet openings branch off the fuel channel. A connecting element is arranged on the main tube, wherein the connecting element has an attachment wall that rests against the main tube. The connecting element is connected to the main tube in a material bonded manner and comprises at least two connecting pieces. The connecting pieces have a connecting channel each for the fluidic connection of an outlet opening to each injection nozzle.

The present invention relates to a method for producing an internally pressurized component (1), having the steps of: providing a main body (2) with a longitudinal cavity (3) and with an attachment flange (6) for attachment of the internally pressurized component (1), providing a bolt (80), introducing a through-bore (7) that extends longitudinally through the attachment flange (6) and has two opposite openings (70, 71) with respect to the longitudinal axis (L7), inserting the bolt (80) into the through-bore (7) such that the bolt (80) is arranged flush with the attachment flange (6) on the side of one of the openings (70) and extends from this opening (70) through the through-bore (7) and through the other opening (71) in order to project from the attachment flange (6), materially bonding the bolt (80) to the attachment flange (6), and introducing a longitudinal bore (81) into the bolt (80) to form an attachment sleeve (8). The invention also relates to a corresponding internally pressurized component (1).