Abstract:
Das erfindungsgemässe Verfahren zur Herstellung eines festen Gehäuses, insbesondere eines Ventilgehäuses für ein elektromagnetische betätigbares Ventil, zeichnet sich dadurch aus, dass die folgenden Verfahrensschritte zur Anwendung kommen: (a) Bereitstellen von wenigstens drei flachen metallischen Blechen (60, 61) nebeneinander, die jeweils unmittelbar benachbart unterschiedliche Magneteigenschaften aufweisen, (b) Fügen der wenigstens drei Bleche (60, 61) an den unmittelbar benachbart liegenden Begrenzungskannten (65) zur Bildung eines Blechabschnitts, (c) Verformung des Blechabschnitts in eine Hülsenform, (d) gegenseitige Befestigung der sich nun gegenüberliegenden, in Längsrichtung der Hülse verlaufenden Begrenzungskannten zur Bildung eines Hülsenrohlings, (e) Endbearbeitung des Hülsenrohlings bis zum Erreichen einer gewünschten Geometrie des Gehäuses (66). Das Gehäuse (66) eignet sich besonders für den Einsatz in Brennstoffeinspritzventilen in Brennstoffeinspritzanlagen von gemischverdichtenden fremdgezündeten Brennkraftmaschinen.
Abstract:
A method is provided to fabricate a carbon-carbon (C/C) composite valve (15) comprising machining a carbon-carbon composite valve stem having a flared end (13) and a non-flared end (11) from a cured and densified carbon-carbon plate having a sufficient thickness. Applying a plurality of circular fabric plies coaxially onto the non-flared end of the carbon-carbon valve stem and advancing the plies to contact the flared end of the valve stem. Placing the carbon-carbon valve stem contacted with the plurality of circular fabric plies into a die, closing the die, and cure pressing the plies onto the flared end of the carbon-carbon valve stem to form a valve head. Carbonizing the press cured carbon-carbon composite valve, densifying the carbon-carbon composite valve structure, and coating at least one of the carbon-carbon valve stem and valve head with a high temperature resistant coating comprising an inner and an outer layer.
Abstract:
A lid configured for use with a fluid container includes a body member and a valve. The body member includes a central body that extends to an outer periphery configured to couple to a rim of a fluid container. The body member defines an aperture therethrough and has top and bottom surfaces. The valve has a first portion directly secured to the bottom surface and a second portion that extends from the first portion. The second portion includes a protuberance and is movable relative to the first portion between free and depressed states in response to deflection of at least a portion of the central body relative to the outer periphery. The protuberance is configured for sealed engagement with the aperture while the second portion is in the free state and is spaced from the aperture while the second portion is in the depressed state.
Abstract:
Poppet valves are manufactured by rotating a metal spray deposition nozzle relative to a rod or tube about the longitudinal axis of the rod or tube to deposit metal at a localized region intermediate the ends of the rod or tube so as to form a flange-like accretion on the rod or tube, and subsequently cutting through the rod or tube and the accretion at the centre of the localized region to form two poppet valve preforms which are than subjected to finishing treatments. Metals having differing properties of heat, wear and corrosion resistance may be coated upon one another in forming said accretion.
Abstract:
In a method for reducing "blow-out" of annular welds for attaching components in a fuel injector, a relief region is formed on radially-facing surfaces of the components. The relief region is adjacent to a press-fit region. The components are then pressed together, and a weld is made in the relief region. A sealed gap is thereby formed in the relief region between the weld and the press-fit region. The sealed gap provides for the expansion of trapped gases that could otherwise "blow out" the liquid weld bead.
Abstract:
A method of manufacturing a ball valve having a valve housing (10) and a ball (20), comprising the steps of weld-connecting a pair of housing halves (12) and (14) in mirror symmetrical shape through a single weld line so as to surround the ball having a through hole and a pair of recessed parts provided therein beforehand with the through hole (22) directed so as to be aligned with the weld line, forming holes (42) and (50) having the centers on the operating center line of the ball valve for mounting a pair of pivot shaft portions by machining in the valve housing at the positions aligned with both opening ends of the through hole, rotating the ball by an angle of 90 DEG to align the through hole of the ball with the openings (12A, 14A) of the valve housing and also align the recessed parts (26, 28) of the ball with the holes of the housing, and installing the pair of pivot shaft portions (60, 68) into two holes, inserting pivot shafts into two recessed parts, and weld-connecting the periphery of the pair of pivot shaft portions to the edge portions of the holes.
Abstract:
A direct drive servo-valve (10) wherein rotational motion of a drive motor rotor (28) is converted into linear motion of a spool valve (16). The drive motor (26) includes a shaft (50) which has affixed to the end thereof a ball (54) which engages the spool valve. The ball is affixed to the shaft by providing a bore (52) internally of the shaft which is disposed eccentrically to the longitudinal axis of the shaft. The ball has a portion thereof (64, 66) ground off so as to provide an integral protrusion (60) which is received within the bore in the end of the shaft. The ball is permanently affixed to the shaft by brazing the protrusion into the bore and a planar surface (62) which surrounds the base of the protrusion to the end of the shaft against which it mates.
Abstract:
A liquid injector for injection of liquids into internal combustion engines is provided. The injectors have a plurality of jets aimed at a common collision point, where at least two jet streams collide to create a finely atomized liquid due to kinetic energy dissipated by the impact of the liquid streams. The angle formed by the jets, the pressure applied and the distance at which the jets collide is such that the loss of forward momentum is greater than the energy required to create particles smaller than 5 microns. Liquids injected may include gasoline, diesel-type fuels, or water. The injectors may be employed for port injection or direct injection.
Abstract:
Die vorliegende Erfindung betrifft ein Verfahren zum Fügen eines ersten Gehäusebauteils (2) mit einem zweiten Gehäusebauteil (3) mittels Schweißen, wobei das erste Gehäusebauteil (2) und das zweite Gehäusebauteil (3) jeweils als Hohlkörper mit geschlossenem Hohlquerschnitt gebildet sind, wobei eine Form des Hohlquerschnitts des zweiten Bauteils (3) einer Form des Hohlquerschnitts des ersten Bauteils (2) entspricht, umfassend die Schritte: Bereitstellen des ersten Gehäusebauteils (2) mit einem ersten Innenmaß (II), Bereitstellen des zweiten Gehäusebauteils (3) mit einem Außenmaß (A2), wobei das Außenmaß (A2) des zweiten Gehäusebauteils (2) kleiner ist als das Innenmaß (II) des ersten Bauteils (2), Anordnen des zweiten Gehäusebauteils (3) im ersten Gehäusebauteil (2), so dass zwischen einer Innenwand des ersten Gehäusebauteils (2) und einer Außenwand des zweiten Gehäusebauteils (3) ein umlaufender Spalt (6) gebildet ist, wobei der Bereich mit Spalt zwischen den beiden Gehäusebauteilen (2, 3) ein Fügebereich (4) ist, und Verschweißen des ersten Gehäusebauteils (2) mit dem zweiten Gehäusebauteil (3) im Bereich des Spaltes (6) zwischen dem ersten und zweiten Gehäusebauteil (2, 3). Die Erfindung betrifft ein Gehäuse für ein Einspritzventil, welches gemäß dem erfindungsgemäßen Verfahren hergestellt ist.