A gas turbine fuel injector assembly including one or more dampers for damping vibration of one or more fuel conduits in the assembly. The dampers may at least partially surround the fuel conduits, and each damper has an intermediate portion that is bowed relative to axial end portions to form a pocket, which enables the damper to be free to flex radially for damping vibration experienced by the fuel conduit during operation. The damper may be a wire mesh damper formed with interwoven wires that are configured to move relative to each other in response to vibrational movement of the fuel conduit. The wire mesh damper also may enable fluids, such as gases or fuel, to flow through gaps in the wire mesh. The damper may support and damp individual fuel conduits, thereby enabling the fuel conduits to thermally expand independently of each other in the assembly.

An electromagnetically actuable rate control valve for controlling a delivery rate of a high-pressure pump includes an electromagnet, a valve element, an armature shaft, and at least one strength element. The valve element is movable in an axial direction and is configured to open and to close the electromagnetically actuable rate control valve. The armature shaft transmits a force. The force is produced by the electromagnet and acts on the valve element in the axial direction. The at least one strength element is configured to raise at least the strength of the armature shaft. The armature shaft includes a needle region adjacent to the valve element and an armature region remote from the valve element. The needle region and the armature region are integral with each other.

In a method for producing a threaded connection between a first component and a second component of an injection device for internal combustion engines, which are each provided for carrying high-pressure fluid, an internal thread is formed on a tubular end portion of the first component, into which the second component can be screwed and clamped against a resting surface of the first component, the second component having formed thereon an external threaded portion for engaging the internal thread of the tubular end portion, an outer ring imparting an elastic prestress acting in the radial direction is pressed onto the tubular end portion, and the components are subsequently screwed together.

In a component (1), in particular a housing of a high-pressure fuel pump, in which at least one first high-pressure channel (4) and one second high-pressure channel (5) are present, the longitudinal axis of the first channel (4) is at an acute or right angle to the longitudinal axis of the second channel (5), wherein the second channel (5) leads into the first channel (4), such that an intersection is formed. The first channel (4) is formed by a central bore (10) and at least one secondary bore (11) that enlarges the cross-section of the central bore (10), wherein the longitudinal axis of the secondary bore (11) and the longitudinal axis of the central bore (10) extend parallel to one another. The central bore (10) passes through ugh the component (1) and consists of a first segment (8) extending over the intersection and a second segment (9) connected to the first segment, wherein the at least one secondary bore (11) extends only along the first segment (8) and no secondary bore is provided along the second segment (9).

The present disclosure relates to a device for pressure control, including a rod and a plunger. The rod has a first end region delimiting a pressurized space and is movable along an axis between a top dead center and a bottom dead center. The plunger has a traverse substantially perpendicular to a plunger axis transmitting kinetic energy from a plunger drive to the rod in a contact region between a traverse surface and a second end region of the rod arranged opposite the first end region. The rod includes a calotte-shaped end region in the contact region of the rod and the traverse includes a calotte-shaped recess in the contact region of the traverse.

A system for sealing a plurality of orifices through a wall of a vessel is provided. The system includes a plurality of sealing members configured to releasably seal respective orifices of the plurality of orifices. The system also includes a base defining a central axis therethrough. The base includes a plurality of segments disposed about the central axis. Each of the plurality of segments includes an outer surface and an inner surface. The inner surface is configured to engage at least one sealing member of the plurality of sealing members. Further, each segment of the plurality of segments is configured to deform toward the central axis on application of a force upon the outer surface thereof to bias the at least one sealing member into sealing engagement with a respective orifice of the plurality of orifices.

An engine assembly includes a cylinder block having at least one cylinder. The engine assembly includes at least one cylinder head coupled to the cylinder block, and at least one intake port coupled to the cylinder head, at least one exhaust port coupled to the cylinder head, and at least one fuel injector coupled to the cylinder head. The engine assembly includes a head cooling extension protruding from the cylinder head. The head cooling extension includes at least one extension wall and defines an extension cooling passageway at least partially enclosed by the at least one extension wall. The extension cooling passageway is at least partly disposed between the exhaust port and the fuel injector in order to create a thermal barrier between the fuel injector and the exhaust port when the coolant flows through the extension cooling passageway.

Methods and systems are provided for a direct injection fuel pump. The methods and system control pressure within a compression chamber so as to improve fuel pump lubrication.

A tappet (1) for a fuel injection pump, having a tube-like housing (2), which accommodates a roller (4) for the running on a periodic lift generator inside the inner lateral surface (5) thereof in the region of a first ring end (3). This roller has axle stumps (7) projecting from the end faces (6) of the roller, by which stumps the roller sits in recesses (8) in the housing (2), wherein the housing (2) is penetrated axially by a bridge piece (9) underneath the roller (4), the underside (11) of which bridge piece, which faces a second ring end (10) of the housing (2), acts as a rest for a plunger following part. The inner lateral surface (5) of the housing (2), proceeding from the first ring end thereof in the direction of the second ring end (3, 10) and at least in the circumferential section (13) thereof, which surrounds an outer lateral surface (12) of the roller (4), has a pocket-like thinned portion of material (14), which levels out under a half of the height of the roller (4) and into which the ring edges (15) of the roller (4) project.

It is important not to form the partial bump in the collision structural part, however the fixed core and the movable core are relatively inclined due to an accumulation of tolerances and therefore even if each collision structural part of the fixed core and the movable core in formed in a flat shape, the fixed core and the movable core are contacted with not the whole of the collision structural parts but a part of the collision structural parts at the moment of the collision. In a case in which the collision structural part is formed in a ring shape or an intermittent ring shape, the fixed core and the movable core are contacted with each other at outer peripheral parts. Thus, when the fixed core and the movable core are collided with each other, a high stress is applied to the outer peripheral parts contacted first. Accordingly, the shape of the outer peripheral parts of the collision structural parts is important, however since such a part, which is a tiny protruding shape, requires high processing accuracy, to reduce stress occurred during collision while keeping productivity is difficult. In the present invention, an R-shaped part and a flat part are provided in order from an outer peripheral side of a collision structural part. Further, the R-shaped part and the flat part are connected in a tangent manner.