The invention relates to an arrangement for connecting at least one fuel injection valve with a fuel distributor of a fuel injection system of an internal combustion engine, which fuel distributor is detachably fastened to a cylinder head, wherein the at least one fuel injection valve is detachably fastened by means of a fixing element to a mounting element of the fuel distributor. It is provided that a non-cylinder-facing surface of the mounting element of the fuel distributor and a cylinder-facing surface of the fixing element, in the assembled state of the cylinder head and fuel distributor and also the fuel injection valve, are configured as contact surfaces, by means of which, through attachment of the fixing element to the fuel injection valve, it is possible to bring about an axial fixing and a radial orientation of the fuel injection valve in the cylinder head and in the mounting element of the fuel distribution rail.

The flexibility of the attachment angle and attachment interval of the member (e.g., injector) attached to the joint member is increased to improve the flexibility of layout even in the case of the forged rail for high-pressure direct injection. In addition, the manufacturing cost can be reduced while keeping high strength of the joint portion. A rail body 1 manufactured by forging, the rail body 1 having a through hole 4 opened on a wall surface 3 for communicating a fuel passage 2 extending in an axial direction with an outside; and

a tubular joint member 6 manufactured separately from the rail 1 body and fixed to the rail body 1 at a position of the through hole 4 for allowing a fuel to flow from the fuel passage 2 through the through hole 4 are provided.

The present invention aims for smoothly aligning an injector and an injector holder in a circumferential direction when the injector is assembled to the injector holder. In an injector holder 1 having an injector cup 2 for inserting an injector 8 into the injector cup 2 and an annular flange 3 projecting outward from an opening edge of the injector cup 2, an engaging recess piece 4 is extended from the annular flange 3, the engaging recess piece 4 having a recess 6 capable of being engaged with an engaging protrusion 16 protruded from the injector 8 for positioning the injector 8, and a claw portion 7 extending in a direction of assembling the injector 8 is projected from the tip of the engaging recess piece 4.

The present disclosure relates to fuel injection systems. The teachings thereof may be embodied in an adjustment device for a fuel injection valve including a ring element to fit a recess of the cylinder head between a valve housing and the cylinder head to align the valve relative to the recess. The ring element may include a metallic coil spring and an elastomeric component surrounding and completely enveloping the metallic component.

The invention relates to an arrangement for connecting at least one fuel injection valve with a fuel distributor of a fuel injection system of an internal combustion engine, which fuel distributor is detachably fastened to a cylinder head, wherein the at least one fuel injection valve is detachably fastened by means of a fixing element to a mounting element of the fuel distributor. It is provided that a non-cylinder-facing surface of the mounting element of the fuel distributor and a cylinder-facing surface of the fixing element, in the assembled state of the cylinder head and fuel distributor and also the fuel injection valve, are configured as contact surfaces, by means of which, through attachment of the fixing element to the fuel injection valve, it is possible to bring about an axial fixing and a radial orientation of the fuel injection valve in the cylinder head and in the mounting element of the fuel distribution rail.

A fuel injection system for an engine of a vehicle may include an injector nozzle mounted in an injector bore formed in a cylinder head of the engine, wherein a tip portion of the injector nozzle is protrudingly formed into a combustion chamber, and having a positioning system configured to adjust an axial position of the injector nozzle in the injector bore. The invention further provides a method of operating the fuel injection system.

Technology is provided for a fuel injector mounting system for mounting an injector to an engine cylinder liner. The system includes an injector adapter having an adapter body including a first end portion threaded for engagement with a cylinder liner and an injector port formed in the adapter body opposite the first end portion. The injector port includes a plurality of concentric bores configured to receive the proximal end portion of an injector. A flange extends transversely from the adapter body and a collar engages a portion of the injector and connects to the flange to retain the injector in the adapter. A transverse passageway extends through a sidewall of the adapter body and intersects the injector port and an annular fitting is disposed on the injector adapter for fluid communication with the transverse passageway. An injector support bracket attaches a distal end portion of the injector to the engine.

A fuel injector includes a fuel inlet; a fuel injector body; an outlet body having an upstream surface, a downstream surface, and an outlet aperture fluidly connecting the upstream surface to the downstream surface; and a valve assembly which controls flow through the outlet aperture. The outlet body includes a 2-dimensional matrix of cells on the downstream surface and includes a perimeter having a finder pattern and a timing pattern and also includes a field of unpopulated and populated cells within the perimeter which represent bits of data. The 2-dimensional matrix of cells orients the outlet body relative to the fuel injector body.

A fuel injection system for an engine of a vehicle may include an injector nozzle mounted in an injector bore formed in a cylinder head of the engine, wherein a tip portion of the injector nozzle is protrudingly formed into a combustion chamber, and having a positioning system configured to adjust an axial position of the injector nozzle in the injector bore. The invention further provides a method of operating the fuel injection system.

The present disclosure relates to a clip for an injector, in particular, the clip for the injector including a base portion and an elastic piece of the clip that elastically support the upper surface of a connector housing and the lower surface of an injector cup, thus attenuating fuel injection load. In addition, an engaging piece of the clip is inserted into an engaging portion of the injector cup, thus preventing the rotation of the injector.