Abstract: Disclosed are crankshaft, single-plate cam and beam mechanisms that provide significant improvements in performance for 2- & 4-stroke engines, compressors and pumps. These cost effective mechanisms include linkages with the new and improved use of pivoting arms that operate with a variety of cylinder arrangements. One embodiment of the crankshaft mechanism has its crankpin roller positioned within a novel yoke-arm. The cam mechanism uses a pair of centrally positioned parallel links that are connected to roller cam followers and single or diametrically-opposed pistons. A pair of laterally extending follower arms connects to the ends of the links to provide support and alignment for the piston rods. Between the reciprocating links, cam followers and follower arms is a rotating odd-lobe plate cam. A beam mechanism uses opposite-direction extending balancing beams that are connected to links, cam followers and piston rods.

Abstract: An oil pan baffle is secured by a securing device on the oil pan. The securing device has an oil pan gasket with a gasket body matched to a sealing contour of an oil pan relative to a crankcase and securing elements that are connected to the gasket body and project inwardly away from an inner perimeter of the gasket body. The securing elements act on contact surfaces of the oil pan baffle, with which contact surfaces the oil pan baffle is positioned in receptacles of the oil pan, and exert pressure effecting secure fixation of the oil pan baffle on the oil pan when the oil pan gasket is compressed by mounting the oil pan on the crankcase.

Abstract: A flat seal, in particular a cylinder head gasket or an exhaust flange seal, includes at least one layer provided with at least one through opening. The through opening receives at least one elastically deformable profiled body configured as an annular profile wire. The profiled body, when seen in the radial direction, has different material thicknesses and is functionally connected to at least one support body.

Abstract: A coupling arrangement for coupling an injection valve to a cylinder head of a combustion engine has a housing with a central longitudinal axis coupled to a fuel rail at a first axial end area and to a valve body at a second axial end area of the housing, and the valve body being arranged at the central longitudinal axis having at least one first protrusion arranged facing a second axial end area of a first ring element. Furthermore, the first ring element is arranged at least partly circumferentially the valve body at the first protrusion, wherein at a first axial end area of the first ring element the first ring element is in contact with the housing at the second axial end area and at the second axial end area the first ring element rests on the cylinder head. The first ring element has a plastic.

Abstract: Flat gasket comprising a first sheet metal layer consisting of a spring steel and a second sheet metal layer consisting of a ductile steel, the first layer being provided with a sealing bead, and the second layer being provided in an edge area bordering on an edge of the layer with a thickened zone as supporting element for receiving pressing forces; to increase the design possibilities for such a supporting element, the latter is formed by at least one elongate arch of the second layer, which is stamped into the edge area of the second layer and extends approximately parallel to the free edge of the edge area, the arch being compressed in such a way that the metal volume of the supporting element is at least three times the total hollow space volume which the supporting element and two tangential planes abutting on the latter and extending parallel to the plane of the second layer include between them.

Abstract: A gasket of an internal combustion engine includes a discharge line installed in an intermediate layer and having an outer end exposed from the outer peripheral edge of the gasket to be a first connection part and an inner end exposed from a inner peripheral edge around the opening to be an electrode, configured such that discharge is generated between electrodes with voltage applied between first connection parts; an antenna installed at least partly in the intermediate layer at the inner peripheral edge around the opening to radiate electromagnetic waves into a combustion chamber; and an electromagnetic wave transmission line installed in the intermediate layer, having an outer end exposed from an outer peripheral edge to be a second connection part and an inner end connected to the antenna, and guiding electromagnetic waves to the antenna.

Abstract: A gasket for an internal combustion engine comprises a sheet portion and a PCV impaction surface formed in the sheet portion. The PCV impaction surface is configured to extend across, and partially close, a crankcase ventilation system passage. A plurality of apertures extend through the PCV impaction surface and are configured to allow crankcase gas to flow freely in the crankcase ventilation system passage while the PCV impaction surface is configured to separate oil droplets from the crankcase gas by impaction of the droplets with the surface.

Abstract: A seal structure is provided for an internal combustion engine. The seal structure can include a main seal link, at least one fastener seal connected to the main seal link and adapted to surround at least a portion of a crankcase fastener hole, and an enlarged bearing seal operatively connected to the fastener seal and adapted to be in sealing abutment with at least a portion of an outer race of a bearing. The engine can include a crankcase formed of a first section and a second section retained together with the seal structure located therebetween for providing a seal for the crankcase.

Abstract: An intake manifold for a multicylinder internal combustion engine includes a number of inlet runners operatively connected with a mounting flange. A sealing region circumscribes only an outer periphery of the mounting flange and does not extend between adjacent ones of the intake runners. The sealing region includes a continuous groove formed in the mounting flange and a sealing composition applied to the groove.

Abstract: A fluid injector has a housing, a valve body and an actuator unit inserted into the housing. The valve body has a cartridge with a recess that takes in a needle. The valve body further has a hollow body arranged in a fixed position to the needle and forming a first spring rest. The valve body further has a valve cap, which takes in the cartridge and forms a second spring rest. A return spring rests on the first spring rest and on the second spring rest. The valve cap, the housing and the cartridge are formed such, that before the valve cap and the housing and the valve cap and cartridge are permanently fixed to each other the valve cap is moveable relative to the housing and the cartridge while the housing and the cartridge stay in a fixed position relative to each other.

Abstract: A fuel injection system for an internal combustion engine includes a fuel injector pocket, formed within a cylinder head, for housing an injector which sprays fuel into a combustion chamber defined by the cylinder head and a piston crown. The injector is mounted with an isolator which is loaded at a lower, elastic rate during lower power operation, with the elastic load element being stacked solid and subject to higher rate column loading during high power operation of the engine and injection system. The isolator controls unwanted injector ticking noise, while protecting the integrity of the injector's tip seal.

Abstract: A sealing arrangement for sealing of connecting sites (5) on flow paths (7) for flowable media, in particular for hot gases such as exhaust gases of internal combustion engines, with a sealing body (19) which adjoins the sealing surfaces (15, 17) of the connection sites (5) under a sealing force, is characterized in that a control body (25) is assigned to the sealing body (19) and is mechanically and thermally coupled to the sealing body (19) and to the surface regions (1, 3) on the connection sites (5) of the flow path (7) and transfers the sealing body (19) under thermal load into a state which produces an increased sealing force.

Abstract: A metal laminate gasket includes a plurality of metal plates including a first metal plate having a first hole to be sealed and a bead around the first hole, and a second metal plate laminated under the first metal plate and having a second hole corresponding to the first hole. Concavities and convexities are formed at the second metal plate concentrically around the second hole for increasing an apparent plate thickness of the second metal plate. The concavities and convexities are provided continuously at a position corresponding to the foot portion or the top portion of the bead of the first metal plate. The concavities and convexities have a height and width smaller than those of the bead, and have a deformation characteristic due to a surface pressure when compressed, smaller than that of the bead.

Abstract: The compositions and methods of the invention are related to RTV silicones having enhanced oil resistance. The compositions of the invention are useful for forming seals having oil resistance and desired tensile strengths after exposure to oil, including gear oil. The compositions are also useful for manufacturing articles sealed with the cured oil resistant RTV silicones.

Abstract: In a cylinder head gasket including a plurality of seal plates 1 to 4, a combustion gas that is to leak through a gap between the respective seal plates is reliably sealed. The cylinder head gasket includes the plurality of seal plates 1 to 4, which are held between a cylinder head and a cylinder block having a cylinder bore. The plurality of seal plates 1 to 4 are adhered to each other in a circumferentially continuous manner around combustion chamber holes 1a to 4a, and the combustion gas that is to leak through the gap between the respective seal plates is reliably sealed within an adhered portion 5 of the respective seal plates.

Abstract: A gasket (122) includes a first plurality of cylinder openings (402) arranged to correspond, one each, to a corresponding first plurality of cylinder bores (106) formed in a crankcase (102) of an internal combustion engine (100). A second plurality of coolant openings (404) and a third plurality of oil openings (406) are formed in a substrate sheet of material that makes up the gasket (122). A fourth plurality of pushrod openings (408) is formed in the substrate material of the gasket (122). Each of the fourth plurality of pushrod openings (408) includes a pass through portion (302) that has a semicircular shape with an internal diameter, D, and an alignment portion (304) that has a semicircular shape with an internal diameter, d. The diameter d is smaller than the diameter D. The pass-through portion (304) is located adjacent to the alignment portion (302).

Abstract: A connection between an elastomer part and a component involves the component, at the connection site to the elastomer part, being provided with a U-shaped groove which has an undercut and which the elastomer part engages positively.

Abstract: The present invention relates to a fuel injection system for the direct injection of fuel into a combustion chamber of an internal combustion engine. At least one fuel injection valve is arranged on a cylinder head in a receiving bore in order to inject fuel into the combustion chamber. A fuel distribution line is provided for feeding the fuel to the fuel injection valve. A compensation element for a position compensation and/or tolerance compensation, is arranged in the radial direction between the fuel injection valve and the cylinder head and is arranged in the axial direction of the fuel injection valve between a first sealing element, sealing between the fuel injection valve and the cylinder head on a side facing the combustion chamber of the fuel injection valve, and a second sealing element, sealing between the fuel injection valve and the fuel distribution line.

Abstract: An engine exhaust system comprises duct pieces and a thermally expandable sealing joint for interconnecting their adjoining ends. The sealing joint comprises a tubular body including includes a first axial end portion, a second axial end portion, and a bridge portion extending therebetween. The first end portion is at least partially positioned within a female recess of the first duct piece and the second end portion is at least partially positioned with a female recess of the second duct piece. The bridge portion can extend across a gap and/or it can be positioned partially within female recesses. Upon thermal activation, the sealing joint radially expands permanently to engage the inner radial surfaces of the duct pieces.

Abstract: The invention relates to a metallic-flat gasket (1) comprising at least a first and a second gasket layer (2, 3) in which a bead (20) is provided in at least the first gasket layer (2), said bead (20) surrounding in a self-contained manner a through-opening (4) extending through the flat gasket (1). The first gasket layer (2) has a smaller surface area than the second gasket layer (3) and leaves free an edge region (6) adjoining the outer edge (5) of the flat gasket (1). A compensating portion (7) is provided in an edge region (6) of the second gasket layer (3), which compensating portion (7) protrudes at least in the direction of the first gasket layer (2) and has a height which is less than the thickness of the first gasket layer (2). The compensating portion (7) is arranged at least in certain portions along the outer edge (21) of the first gasket layer (2) and consists of a large number of alternating elevations (31) and depressions (32) which are formed in-the second gasket layer (3).

Abstract: The invention relates to a metal gasket ring (16) comprising an annular holder part (16a) and an annular resilient part (16b). The holder part (16a) forms a support surface for the resilient part (16b). A peripheral edge section (17) of the holder part (16a) is bent so that it overlaps the outer edge of the resilient part. The resilient part (16b) is provided with a bead (20), which projects outwards beyond the edge section (17) of the holder part, radially inside said edge section (17).

Abstract: Flat gasket with a gasket plate comprising at least one sheet metal layer, at least one fluid through-opening to be sealed, and a plurality of screw through-openings, the sheet metal layer having at least one supporting element for receiving pressing forces, and the supporting element being in the form of a bead stamped into the sheet metal layer; in order to improve the durability of the supporting bead while in operation, the bead is designed so as to form with its bead crest, in a plan view of the sheet metal layer, an endless continuous line closed within itself, so that the bead does not have any free bead ends.

Abstract: A gasket for installation between components, that under operating conditions are subjected to temperature-dependent relative motions, in particular a cylinder head gasket for an internal combustion engine, built from multiple individual seal packets, of which a least one is assigned to each component and that at least under operating conditions a gliding relative motion is given solely between contact surfaces of the individual seal packets.

Abstract: An oil pan baffle is secured by a securing device on the oil pan. The securing device has an oil pan gasket with a gasket body matched to a sealing contour of an oil pan relative to a crankcase and securing elements that are connected to the gasket body and project inwardly away from an inner perimeter of the gasket body. The securing elements act on contact surfaces of the oil pan baffle, with which contact surfaces the oil pan baffle is positioned in receptacles of the oil pan, and exert pressure effecting secure fixation of the oil pan baffle on the oil pan when the oil pan gasket is compressed by mounting the oil pan on the crankcase.

Abstract: An engine exhaust system comprises duct pieces (201, 202) and a sealing joint (30) for interconnecting their adjoining ends. The sealing joint (30) comprises a one-piece tubular body (31) including includes a first axial end portion (331), a second axial end portion (332), and a bridge portion (34) extending therebetween. The first end portion (331) is at least partially positioned within a female recess (231) of the first duct piece (201) and the second end portion (332) is at least partially positioned with a female recess (232) of the second duct piece (202). Depending upon the thermal expansion-contraction conditions in the exhaust system, the bridge portion (34) can extend across a gap (24) and/or it can be positioned partially within female recesses (231) and (232).

Abstract: A sealing system is provided for connecting tubular motor vehicle components that includes, but is not limited to a connecting piece and a substantially tubular connecting attachment disposed radially outside the connecting piece. Disposed peripherally on an outer side of the connecting piece is a sealing element for sealing the connecting piece with respect to the connecting attachment. The sealing element has a receiving pocket for receiving the connecting attachment. Furthermore, a clamping element exerts a retaining force radially inwardly onto the connecting attachment by means of the sealing element. As a result, the connecting attachment can be connected to the connecting piece without an interposed hose so that the sealing system is space-saving and makes easier assembly possible.

Abstract: A fuel injector tip seal is provided including improved resistance to the heat and pressures of combustion gas. According to one aspect, the tip seal is formed from polytetrafluoroethylene and between 10 and 35 percent carbon fiber. The material offers improved surface finish and deformation resistance as well as improved thermal conduction and keeps thermal expansion low as compared to conventional fuel injector tip seal designs. According to a further aspect, a revised seal groove design is provided that allows for expansion and deformation of the tip seal and creates more pressure to the outside diameter face when pressure is applied at the tip. According to another aspect, the tip seal is formed of a flat disk-shaped seal body that can be assembled on the fuel injector by an assembly cone device that allows the disk-shaped seal body to be flipped to a ring-shaped configuration in its assembled position.

Abstract: A sealed joint for a gas sensor as described which includes a sensor shell having an attachment portion and a sealing portion. The sealing portion has an inner recessed section and an outer protruding section terminating at a free end of the shell, the outer protruding section having an outer section diameter which is greater than the diameter of the inner section. The sealed joint also has an upper shield having a shell portion disposed around the sealing portion of the shell and a connector portion which extends upwardly away from the shell portion. The sealed joint includes a first radial crimp of the upper shield proximate the inner recessed section and a second radial crimp of the upper shield in the connector portion proximate the shell portion, such that the second crimp has a crimp diameter which is less than the outer section diameter of the shell.

Abstract: A fluid leak limiter for a high-pressure fuel injection system is disclosed. The fluid leak limiter may have a body at least partially defining a central bore with a fluid inlet and a fluid outlet, and a sleeve piston. The fluid leak limiter may also have a spring located to bias the sleeve piston toward a first flow-blocking position. The sleeve piston may be movable by a first pressure differential between the fluid inlet and the fluid outlet against the bias of the spring toward a flow-passing position at which fluid from the fluid inlet is allowed to flow to the fluid outlet. The sleeve piston may also be movable by a second pressure differential between the fluid inlet and the fluid outlet against the bias of the spring toward a second flow-blocking position at which fluid from the fluid inlet is inhibited from flowing to the fluid outlet.

Abstract: A valve case 12, which is a metal component, and an outer shell portion 13 of a cylinder head cover 11, which is a resin component, are joined together through a seal material 17. First, a recess 16 formed in the valve case 12 is filled with a seal material 17A in a liquid form. A skin layer 22 is then formed by curing the surface of the seal material 17A. Subsequently, the outer shell portion 13 is formed by supplying a synthetic resin material 13A onto the valve case 12 in such a manner as to cover the skin layer 22, which is provided on the surface of a non-cured portion 17a of the seal material 17. At this stage, the skin layer 22 is broken by supply pressure of the synthetic resin material 13A and thus the synthetic resin material 13A and the non-cured portion 17a of the seal material 17 are joined together as an integral body.

Abstract: A cylinder head gasket includes a first gasket base plate at a cylinder head side, a second gasket base plate at a cylinder block side, a shim that adjusts the gasket thickness, and a pressure increasing plate that increases the surface pressure at the side of periphery portions of the cylinders. In the first and second gasket base plates full beads are swollen at the side of periphery portions of cylinders, and half beads are swollen at a site outward of the full beads. The full beads of the first and second gasket base plates are formed so that top portions of the full beads face each other at positions that are opposite to each other in the up-down direction. The shim and the pressure increasing plate are sandwiched between the top portions.

Abstract: A fuel injector assembly comprising an injector body having a leading end, a fuel inlet passage, a backleak passage and a trailing end that terminates in an end surface; a cap that fits over the trailing end of the injector body to define therebetween a chamber for receiving fuel from said backleak passage; and a seal for sealing said chamber to prevent the flow of fuel therefrom, wherein said seal is disposed between said end surface of the trailing end and an inlet end of said fuel inlet passage.

Abstract: An extruded seal member having a corrugated axial surface exhibiting alternating peaks and valleys extending longitudinally along the axial surface of the seal member; a method for manufacturing the seal member which comprises extruding a tubular structure having a corrugated axial surface, crosslinking the extrude tubular structure, cutting the tubular structure to provide a plurality of uniform seal members and recovering the seal members; and a method of using such multilayer seal members, are described.

Abstract: An internal combustion engine includes at least one piston that compresses air in the lower cylinder chamber as it transitions from top dead center to bottom dead center during the power stroke. The air in the lower cylinder chamber is compressed between the downward-moving cylinder and a structure that substantially seals the lower chamber from the crankcase chamber so that compression takes place in a chamber smaller than the crankcase chamber.

Abstract: A seal structure is provided for an internal combustion engine. The seal structure can include a main seal link, at least one fastener seal connected to the main seal link and adapted to surround at least a portion of a crankcase fastener hole, and an enlarged bearing seal operatively connected to the fastener seal and adapted to be in sealing abutment with at least a portion of an outer race of a bearing. The engine can include a crankcase formed of a first section and a second section retained together with the seal structure located therebetween for providing a seal for the crankcase.

Abstract: The invention relates to product categories using a metal polymer composite having properties that are enhanced or increased in the composite. Such properties include color, magnetism, thermal conductivity, electrical conductivity, density, improved malleability and ductility and thermoplastic or injection molding properties.

Abstract: An improved crankcase seal for air-cooled engines, such as the type utilized in aircraft and automobiles, comprises a groove cut into the planar mating surface of one of the crankcase component halves and a generally compressible sealing member disposed in the groove such that when the two crankcase halves are joined together the sealing member is disposed therebetween to seal the mating surface interface. Preferably, the groove is machine cut into the mating surface with a CNC machine and is provided with a pair of opposing upper edges that are spaced apart a distance less than the width of the sealing member such that the sealing member is securely held in the groove during assembly of the crankcase. In one configuration, the groove has a dovetail profile and the sealing member has a circular cross-section. The crankcase seal is particularly beneficial for horizontally opposed aircraft engines and the like.

Abstract: The present disclosure is directed toward an assembly for an exhaust system. The assembly includes a first exhaust system component having a first mating structure and a second exhaust system component having a second mating structure. The second mating structure is mated with the first mating structure in a manner that allows the second mating structure to move along an axis relative to the first mating structure. Additionally, a first seal is disposed in the interface created between the first exhaust system component and the second exhaust system component.

Abstract: A unitary high pressure seal provides a fluid seal against multiple surfaces, at least one of which is static and one of which is dynamically loaded. The seal includes a seal body and separated load and sealing lands. The load land interfaces with the static surface, e.g., a valve assembly barrel, to seal the body to that surface, whereas the sealing land dynamically provides a seal against a variably positioned surface, e.g., a valve head surface. In this manner, when the valve is closed, the load land is not affected by the dynamic loads on the sealing land, and leakage at the static surface is thus minimized.

Abstract: A gasket for use around a thread neck of an automotive component, the gasket dimensioned to prevent the gasket from falling off of the thread neck and to prevent a male screw portion from biting into the gasket.

Abstract: A ring seal includes a body portion and a tail portion extending therefrom. The body portion has, when viewed in cross-section and in an uncompressed state, an axially outboard surface and an axially inboard surface. The outboard surface defines a first sealing lobe, and the inboard surface defines a second sealing lobe that shares an axial centerline with the first sealing lobe.

Abstract: A valve cover assembly for sealed engagement with a cylinder block includes a cover portion, a rail and a molded-in-place elastomeric bridge molded to the cover portion and the rail maintaining the cover portion and the rail in spaced relation to one another. The rail has an outwardly extending mounting flange providing a hard mounting bottom surface that is coplanar with the rail sealing surface. A seal depends from the sealing surface of the rail when in an uninstalled, uncompressed state for compression against the cylinder block upon the sealing surface and the hard mounting bottom surface being brought into engagement with the cylinder block, thereby establishing fluid-tight seal between the valve cover assembly and the cylinder block.

Abstract: A seal for an engine is disclosed. The seal may include a cylinder head gasket. The seal may also include a cylinder head having a top surface and a bottom surface, the bottom surface of the cylinder head attached to the cylinder head gasket. The seal may also include a plurality of adjacent openings extending through the cylinder head, from the top to the bottom surface. The seal may further include one or more elongated slots in the bottom surface of the cylinder head, the one or more slots being located between at least two of the adjacent openings and extending between the openings. The seal may also include filler material filling each of the elongated slots.

Abstract: A sealing material, which comprises a curing product of a composition comprising (A) an acrylic polymer having at least one alkenyl group capable of undergoing hydrosilylation reaction, (B) a hydrosilyl group-containing compound and (C) a hydrosilylation catalyst as essential components, is suitable for use as cam cover seals and oil pan seals for automobile engines, fuel cell cooling medium seals, automobile wire harnesses seals, HDD cover gasket or vibration-insulating HDD cover gasket seals, etc.

Abstract: An electrohydraulic control module is provided for making available a compressed fluid, especially compressed oil for actuators, which are used for actuating control units, for example, for switching gas-exchange valves of an internal combustion engine on and off, with a control housing, which is attached to a connection part of the internal combustion engine and which has electrical switching valves that are connected to an oil supply line and to control oil lines leading to the actuators. The production and assembly expense of the electrohydraulic control modules is reduced in that an intermediate housing (6), which is injection molded from plastic and which has at least the oil supply line and the control oil lines (17), is clamped between the connection part (5) and the control housing (7).

Abstract: A spark plug for an internal combustion engine includes: a cylindrical insulator as defined herein; a center electrode as defined herein; a cylindrical metal shell as defined herein; and a ground electrode as defined herein, an annular gasket receiving portion projecting radially outward being provided on a rear end side of the externally threaded portion of the metal shell, and a metallic gasket capable of abutting against the gasket receiving portion being provided on the outer periphery of the metal shell, wherein the gasket has a solid annular shape, an inside diameter of the gasket is smaller than an outside diameter of the externally threaded portion, and a groove portion whose depth coincides with the direction of the axis is provided over an entire circumference of the gasket.

Abstract: A fuel injector includes first and second electrical actuators positioned within an injector body. First and second pairs of electrical conductors extend from a socket connector outside of the injector body to the first and second electrical actuators, respectively. The electrical conductors extend through an elastomeric sealing member that seals against fuel leakage from the fuel injector. The elastomeric sealing member provides annular sealing ridges in sealing contact with an access passage of the injector body and includes individual conductor seal passages that form seals around the outer surface of the individual electrical conductors. The elastomeric sealing member includes features that facilitate assembly of the fuel injector in a manner that reduces risk of damage to the sealing strategy.

Abstract: The invention relates to a housing sealing cover (1, 10, 15, 18) for detachable liquid-tight fixing to an internal combustion engine, comprising an add-on piece (24) which is firmly connected to the housing, extending through the cover when in a mounted position. Said cover consists of a metallic or polymer support element (2) made of a single layer and is provided with an opening (25) for the add-on piece (24), wherein a seal (23) is arranged in said opening. Said seal comprises a sealing lip(3, 11) extending axially on the edge (26) of the opening (25) and a sealing lip (5, 12, 16, 19) extending radially in relation to the seal of the add-on piece (24). The radially extending sealing lip (5, 12, 16, 19) is retained in the opening (25) in an angularly and radially displaceable manner with respect to the support element (2).

Abstract: A gasket (122) includes a first plurality of cylinder openings (402) arranged to correspond, one each, to a corresponding first plurality of cylinder bores (106) formed in a crankcase (102) of an internal combustion engine (100). A second plurality of coolant openings (404) and a third plurality of oil openings (406) are formed in a substrate sheet of material that makes up the gasket (122). A fourth plurality of pushrod openings (408) is formed in the substrate material of the gasket (122). Each of the fourth plurality of pushrod openings (408) includes a pass through portion (302) that has a semicircular shape with an internal diameter, D, and an alignment portion (304) that has a semicircular shape with an internal diameter, d. The diameter d is smaller than the diameter D. The pass-through portion (304) is located adjacent to the alignment portion (302).

Abstract: A fuel injector apparatus and method is provided for use in a fuel injection system of an internal combustion engine that includes a body, a valve seat, closure member, and an orifice plate. The valve seat comprises the intersection of two angled surfaces with a radius before assembly of the fuel injector. During assembly of the fuel injector, a member presses against the radius edge of the sealing surface of the valve seat to create an oblique third sealing surface or sealing band that is coined into the valve seat. The sealing band provides an improved seal between the valve closure member and the valve seat which operates to prevent leakages of fuel in the fuel injector.