A fuel pump for a fuel injection system of an internal combustion engine includes a pump housing and a fastening section which is present on the pump housing for fastening the fuel pump to a base, in particular an engine block. The fastening section has a through opening for receiving a holding element for a fastening means, in particular a screw. At least one radially inwardly directed projection is present at least in an end region of the through opening, the end region facing the base in the installed position.

A holder is used for fastening a fuel distributor to an internal combustion engine. The holder has a base element which is connected to the fuel distributor. A slotted sleeve is provided, which is connected to the base element, and the base element is braced on the internal combustion engine via the slotted sleeve. Furthermore, a system having the fuel distributor and a plurality of holders of this type is provided.

A fuel injector assembly includes a fuel cup, a fuel injector, and a bolt. The fuel cup defines a cavity and a cup inlet. The fuel injector includes an injection tip and an upper housing. The injection tip defines a fuel outlet opposite the upper housing. The upper housing defines a fuel inlet and a threaded bore. The fuel inlet is disposed within the cavity and in fluid communication with the cup inlet. The threaded bore is disposed within the fuel cup. The bolt is threadably engaged with the threaded bore. The bolt couples the upper housing to the fuel cup.

A fuel injector mounting assembly in an opposed-piston engine allows for mounting of a fuel injector in a cylinder block without significantly deforming the wall of the cylinder into which the injector is configured to deliver fuel. The fuel injector mounting assembly includes a clamping arrangement to clamp the fuel injector to the cylinder block, an elongate tubular sleeve that sheathes a nozzle portion of the fuel injector, and a spanner nut attached to the elongate tubular sleeve. Clamping loads applied to retain the fuel injector in the cylinder block are controlled by the spanner nut.

In some embodiments, a fuel rail for a two-stroke internal combustion engine includes a fuel rail body, a fuel inlet component integrated within the fuel rail body as a one-piece component and in fluidic contact with a fuel line, one or more fuel exit ports in fluidic contact with a cylinder of a combustion engine, and one or more fasteners adapted to secure the fuel rail body to a cylinder wall of the cylinder of the combustion engine

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 (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 pin (80) into the through-bore (7) such that the pin (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 pin (80) to the attachment flange (6), and introducing a longitudinal bore (81) into the pin (80) to form an attachment sleeve (8). The invention also relates to a corresponding internally pressurized component (1).

A fuel supply system includes a fuel injector having an inlet conduit, a nozzle opening, and a valve needle which is moveable to selectively permit and prevent flow of fuel. The inlet conduit extends along an axis and includes an inlet conduit shoulder which is traverse to the axis. A fuel distribution conduit, which supplies fuel to the fuel injector, has external threads. A connection nut has internal threads which threadably engage the external threads of the fuel distribution conduit and also has an internal shoulder which is traverse to the axis. A first ring sector and a second ring sector each engage both the inlet conduit shoulder and the internal shoulder such that tightening of the connection nut causes the first ring sector and the second ring sector to be compressed between the inlet conduit shoulder and the internal shoulder.

A fuel injector retention arrangement includes an interior space which extends into a fuel rail socket along an axis. A retention flange of a fuel injector extends radially outward therefrom such that the retention flange is disposed within the interior space. A slot extends radially from the interior space to a fuel rail socket exterior surface and a retention groove extends radially outward from the interior space. A retainer includes a first leg extending through the slot and a second leg extending through the slot, the first leg and the second leg being connected to each other at one end by a retainer base. A lobe of the first leg extends into the retention groove and supports the retention flange and a lobe of the second leg extends into the retention groove and supports the retention flange, thereby retaining the fuel injector to the fuel rail socket.

A fuel system includes a fuel injector having an inlet conduit which extends along an inlet conduit axis and has an inlet conduit shoulder which is travers to the inlet conduit axis. A fuel distribution conduit supplies fuel to the fuel injector, extends along a fuel distribution conduit axis, and has external threads which threadably engage internal threads of a connection nut. A retention member is a segment of an annulus and includes a central passage extending axially therethrough and external threads which threadably engage the internal threads of the connection nut. The retention member is terminated in a direction circumferentially about the fuel distribution conduit axis by first and second end surfaces which together form a retention member slot therebetween sized to permit the inlet conduit to pass therethrough in a direction perpendicular to the fuel distribution conduit axis.

A fuel distributor which has a pressure accumulator rail for receiving pressurized fuel. The pressure accumulator rail has a forged base body. Mounting supports are joined to the base body by substance bonding. A mounting support is formed by two metal brackets each configured as a sheet-metal formed part. Each metal bracket has a holding portion adapted to the outer contour of the base body, a leg angled relative to the holding portion, and a mounting flange on the free end of the leg and angled away therefrom. A length portion of the base body is received between the holding portions. The holding portions partially surround the base body. The base body and the holding portions are joined by substance bonding. The legs of the two metal brackets lie next to each other at least in regions and are also joined together by substance bonding.