A fuel rail for an engine includes a tubular body having an outer surface and an inner surface, the inner surface defining a longitudinally extending fuel bore. The fuel rail also includes a valve bore extending normal to the fuel bore and extending through the outer surface of the tubular body at a first end and completely through the fuel bore to a second end.

An apparatus, method, and system for aligning at least one injector body to be installed into an engine block along a first direction. The alignment apparatus includes a first alignment member configured to swing between a clearance position and an alignment position, wherein the first alignment member is configured to align the at least one injector body along a second direction when in the alignment position. The apparatus further includes a second alignment member configured to align the at least one injector body along a third direction by contacting the at least one injector body via a first and second contacting portion.

Disclosed herein is an injector fixing structure of a fuel rail. The injector fixing structure for a fuel rail module is configured such that an injector cup that includes a slot formed at a side thereof and an injector that includes an anti-rotation pin inserted into the slot are coupled to each other by a clip. The injector fixing structure also includes a lock formed integrally with the anti-rotation pin, and a fixing member coupled to the slot and allowing the lock to be secured when the anti-rotation pin is inserted into the slot such that the anti-rotation pin is prevented from being separated from the slot. The present invention may prevent separation of the injector from the fuel rail during transportation of the fuel rail module, thereby improving assemblability of the fuel rail module in engine assembly and increasing process efficiency.

An injector system, in particular a fuel injector system, includes an injector, a housing that at least partially encloses the injector, and a connecting piece that is connected to the injector and includes a connecting area via which the injector is situated in a formfitting manner at the housing.

The present disclosure relates to a diesel distributor fuel rail for a diesel combustion engine with a diesel distributor conduit and a plurality of injector cups in fluid connection with a diesel distributor conduit. In order to make combustion engines having a smaller cylinder capacity more efficient, it is necessary to enhance fuel pressure in the distributor fuel rail. On the other hand the footprint available for the distributor fuel rail has not changed. According to the present disclosure it is thus suggested to provide at least a section of the distributor conduit by a tube made of an austenitic stainless steel comprising, in weight %, C0.080, 8.00Mn10.00 Si1.00, P0.030 S0.030 19.00Cr21.50, 5.50Ni7.50, 0.15N0.40, Mo0.75, Cu0.75, balance Fe and normally occurring impurities.

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.

A fuel pipe includes a tubular header pipe and a socket coupled to the header pipe and supplied with fuel from the header pipe. The header pipe and the socket form a joining portion therebetween. The joining portion is shaped to be elongated in a first direction. The joining portion includes a communication hole that connects an inner region of the header pipe and an inner region of the socket. The communication hole is an elongated hole elongated in the first direction.

A fuel injector is described which is able to be preassembled in a receiving opening of a fuel-distributor line in a loss-proof manner in a structural unit in the form of a fuel charge assembly for transport to the final assembly at the vehicle manufacturer. A radial support disk for preventing the loss of the fuel injector is disposed on the inflow-side end of the inlet pipe by press-fitting the radial support disk in the receiving opening. The fuel injector is particularly suitable for the direct injection of fuel into a combustion chamber of a mixture-compressing internal combustion engine having externally supplied ignition.

An axisymmetric injector hold-down load ring includes an annular body and an odd numbered plurality of resilient arms integrally extending from the annular body. Each resilient arm has a curvature concentric with the annular body and extends in a first circumferential direction along an outer periphery of the annular body an equal circumferential distance from a connection with the annular body to a free end. The free end of each resilient arm includes a contact surface facing axially opposite a first surface of the annular body, the contact surface of each resilient arm is axially offset from the first surface of the annular body an equal axial distance. This configuration positions the connections and contact surfaces in radial alignment so that force is transmitted along the resilient arms between the circumferentially spaced connections and contact surfaces when the load ring is in use.

Disclosed herein is a mounting structure of a fuel rail, including a mounting boss part having a through-hole formed in a longitudinal direction and a first mating surface formed at an outer surface, an injector cup part provided separately from the mounting boss part and having a second mating surface formed at an outer surface and a flow path hole formed at one side of the second mating surface to be connected to the main pipe for transferring fuel to an injector, and a bridge part connecting the mounting boss part and the injector cup part and having a third mating surface. The mounting structure of the fuel rail can effectively distribute stress concentration by increasing contact area with the main pipe, thereby improving fatigue strength.