Provided is a fuel rail for a gasoline direct-injection engine, characterized in that a branch connector is attached to a main pipe through a recessed connection member, the recessed connection member is secured to the main pipe by brazing or welding, the branch connector is recess-projection fitted to the recessed connection member and is detachably fastened thereto by a thread fastening mechanism or by a bolt fastening mechanism, and an O-ring provided between the recessed connection member and the branch connector is tightened by an axial force created by fastening of the branch connector to thereby create a seal between the recessed connection member and the branch connector; and a hardness of the branch connector is set to be lower than that of the branch pipe facing the branch connector.

A pipe section of a common rail line is provided for the high-pressure injection of a fluid. The pipe section has at least a first pipe and an adapter in which the first pipe has a wall and extends at least along an axial direction. The wall has an inner circumferential surface and an outer circumferential surface and encloses a first line. The adapter has a connector piece and a second pipe. The connector piece extends annularly around the first pipe and is situated on the outer circumferential surface. A second line that is formed by the second pipe is fluidically connected to the first line via a first opening in the first pipe and a second opening in the connector piece. At least the adapter is manufactured by a metal powder injection molding process. Two methods for manufacturing a pipe section are also provided.

A monolithic fuel delivery system for gasoline direct injection to an engine. The system has a common rail tube body from which injector sockets smoothly and seamlessly extend. Uninterrupted junctions are formed between the rail tube body and the injector sockets. The seamless junctions present a sealed relationship between the tube body and the injector sockets.

A component for a fuel injection system, in particular a high-pressure fuel injection system, includes a base body which is implemented in a tube-shaped manner at least sectionally. A tubular section of the base body is implemented having a longitudinal bending along a longitudinal axis of the tubular section which perpendicularly intersects the cross sections of the tubular section. At the longitudinal bending of the tubular section, the base body is implemented in such way that an ovality of the cross sections of the tubular section is reduced and/or smaller than 8% at the longitudinal bending.

A monolithic fuel rail structure is configured to receive and support a fuel injector, and includes a log, an injector cup that protrudes integrally from an outer surface of the log, and a fuel passage. An inner surface of the log defines a main fuel channel, and the injector cup includes a bore that opens at one end of the injector cup. An inlet end of the fuel injector is received in the bore. The fuel passage provides fluid communication between the bore and the main fuel channel, and the fuel passage corresponds to a portion of a hole that extends through the injector cup on each of opposed sides of the injector cup.

A fuel distributor which has a pressure accumulator pipe for receiving pressurized fuel where the pressure accumulator pipe has a forged main body with a longitudinal cavity. At least one connector flange is configured in one piece from the same material on the main body. The connector flange has an injector connector with a connecting duct to the longitudinal cavity. A cup-shaped injector receptacle is joined to the injector connector. The injector receptacle is a single-piece deep-drawn part or a single-piece extruded part or a single-piece turn-milled part, and is connected to the injector connector by way of a fuel-tight join, or by way of brazing technology.

High-pressure fuel pumps and systems incorporating the same are disclosed. The fuel pump includes a housing with at least one fluid feed port, a barrel with at least one fluid receiving port, and a clamp to secure the barrel to the housing. The barrel has a first surface configured to contact a second surface of the housing to form a groove. The groove provides fluid communication between the at least one fluid feed port of the housing and the at least one fluid receiving port of the barrel.

The invention relates to a fuel injection device for an internal combustion engine, comprising a fuel flow pipe which extends in a flow direction, a nozzle insert, wherein the nozzle insert comprises a cylindrical body which is positioned in the flow pipe, a channel which extends through the cylindrical body from one side to the other; and wherein the cylindrical body successively comprises in the flow direction a fitted portion which is force-fitted in a fitting portion of the flow pipe and a guided portion which is intended to cooperate with a guiding portion of the flow pipe in order to guide the movement of the cylindrical body in the flow pipe before force-fitting, the guided portion comprising an outer diameter which is less than an outer diameter of the fitted portion, and wherein a ratio between the outer diameter of the fitted portion and a dimension of the guided portion in the flow direction is between 0.33 and 1.

A fuel injector body includes an at least partially annular configuration defining a longitudinal axis, a circumferential direction, and a radial direction. A first counterbore and a first cavity extend from the first end toward the second end, and an external interface portion includes a sealing surface disposed axially between the first end and a shoulder. The first cavity defines a bottom surface and a peripheral surface defining a first cavity diameter, and the sealing surface defines a sealing surface diameter. A ratio of the sealing surface diameter to the first cavity diameter ranges from 0.3 to 4.4.

A method for treating a pipe, in particular a motor vehicle pipe, wherein a flare is generated at least at one pipe end of the pipe. At least areas of the flare are provided with at least one layer, which changes the friction properties of the coated surface of the flare. The flare is coated by means of plasma coating.