A decoupling element for a fuel injection device is characterized in that a low-noise configuration is implemented, and includes at least one fuel injector and a receiving borehole in a cylinder head for the fuel injector, and the decoupling element is introduced between a valve housing of the fuel injector and a wall of the receiving borehole. The decoupling element has a bowl- or cup-shaped configuration, and includes a radially outer contact area and a radially inner contact area with which the decoupling element is radially inwardly and radially outwardly placeable against the fuel injector and a shoulder of the receiving borehole. The radially inner contact area of the decoupling element has a contact surface that corresponds to a convexly curved countersurface on the fuel injector. The fuel injection device is for the direct injection of fuel into a combustion chamber of a mixture-compressing spark ignition internal combustion engine.

The decoupling element is for a fuel injection device, in which a low-noise configuration is implemented, and includes at least one fuel injector and a receiving borehole in a cylinder head for the fuel injector, and the decoupling element is introduced between a valve housing of the fuel injector and a wall of the receiving borehole. The decoupling element has a bowl- or cup-shaped configuration, and includes a radially outer contact area and a radially inner contact area with which the decoupling element is radially inwardly and radially outwardly placeable against the fuel injector and a shoulder of the receiving borehole. The radially inner contact area of the decoupling element has a spherically convex contact surface whose curvature has a largely constant spherical radius. The fuel injection device is particularly suited for the direct injection of fuel into a combustion chamber of a mixture-compressing spark ignition internal combustion engine.

A decoupling element for a fuel injection device is characterized in that a low-noise configuration is implemented. The fuel injection device includes at least one fuel injector and a receiving borehole in a cylinder head for the fuel injector and the decoupling element between a valve housing of the fuel injector and a wall of the receiving borehole. The decoupling element has a bowl- or cup-shaped configuration, and includes a radially inner contact area with which the decoupling element is radially inwardly placeable against the fuel injector. At least one further decoupling element is provided that has a bowl-shaped or cup-shaped configuration and is in direct contact with the other decoupling element. The fuel injection device is particularly suited for the direct injection of fuel into a combustion chamber of a mixture-compressing spark ignition internal combustion engine.

An internal combustion engine injector mounting is configured to i) secure an injector (36) to an internal combustion engine body so that the injector can inject a heated aqueous fluid and a fuel into a combustion chamber of the internal combustion engine, and ii) hold a catalyst so that the heated aqueous fluid and fuel are injected into the combustion chamber by passing through the catalyst. The catalyst is contained within the mounting to protect against oxidation by combustion processes that, in use, take place in the combustion chamber.

An improved apparatus for repairing fuel injector hold-down bolt holes is disclosed. The apparatus can be readily mounted to the passage through which the fuel injector passes via a flange that fits inside the passage and thus generally avoids the need to remove the engine in order to conduct the repairs. The apparatus further provides guides or bushings that allow for the precise alignment of various tools to repair the hold-down bolt hole.

A method for moulding a connector which includes a connecting element having a cylindrical body and, one arm extending along an arm axis for the L-shaped connector or, two arms extending along two different arm axes for the T-shaped connector, the body being capable of being connected to an injector, and each arm being capable of being connected to the end of a pipe. The moulding method includes a) providing a mould having a cavity for a T-shaped connecting element, the cavity including a cavity for a body and two cavities for arms and b) arranging an insert in the cavity for one of the two arms when an L-shaped connecting element is to be moulded.

In some embodiments, a fuel pump includes: a housing; and a flange for fastening the housing to an engine. The flange includes two mutually separated parts for encompassing one circumferential part-region of the housing with a housing receptacle clearance. Each of the two flange parts includes two flange connection regions disposed along a flange-bisecting axis opposite the housing receptacle clearance. A first flange connection region part includes a planar connection element disposed in a first flange plane and a second flange connection region of the flange part includes a connection element disposed in a second flange plane and projecting beyond the first flange plane. The planar connection element of the flange part engages in a form-fitting manner with the projecting connection element of another flange part. The projecting connection element of the flange part engages in a form-fitting manner with the planar connection element of the other flange part.

A fuel supply device for a motorcycle having a fuel pump disposed on the outside of a fuel tank for saving with respect to an installation space and for making a fuel pipe connecting the fuel tank and the fuel pump shorter. A fuel supply device for a motorcycle includes a single main frame extending rearwardly from a head pipe; a fuel tank supported on the main frame; an internal combustion engine; a fuel injection device attached to the internal combustion engine; and a fuel supply portion having a fuel pump by which the fuel is supplied to the fuel injection device via a fuel pipe. The fuel pump is provided on the outside of the fuel tank and attached to the main frame in such a manner that an axial line in a direction in which to connect the fuel pipe is aligned along the main frame.

Provided is an end seal structure of a fuel rail for a gasoline direct injection engine, the end seal structure being characterized in that: a pressure receiving surface is formed on an inner wall surface of the end cap having the cap-nut shape, the pressure receiving surface defining a seat surface; a pressing surface is formed at an end of the rail body, the pressing surface defining a seat surface facing the pressure receiving surface; the end cap having the cap-nut shape and including the pressure receiving surface is screwed and fixed to the rail body; and the pressure receiving surface of the end cap is brought into pressure contact with the pressing surface of the rail body by an axial force created by tightening of the end cap having the cap-nut shape so as to seal the end of the rail body.

A fluid passage device including a passage for flowing high-pressure fluid of a predetermined or higher pressure comprises a sac bore cylinder of a metal, which includes therein a closed passage and a branch passage. The closed passage is shaped to extend straightly in a predetermined direction and has a closed top end, and the branch passage is branched off from the closed passage. A top end part of the closed passage at a closed side is defined by a ceiling wall surface, which is perpendicular to the predetermined direction, a passage wall surface, which is parallel to the predetermined direction, and a connecting wall surface, which connects the ceiling wall surface and the passage wall surface.

The connecting wall surface is shaped to curve in a direction to expand the closed passage.