Abstract: A gas injector for injecting a gaseous fuel, in particular directly into a combustion chamber of an internal combustion engine, including: a valve closing element for opening or closing a pass-through opening, a valve body, and a sealing seat between the valve body and the valve closing element, in the case of a maximum lift of the valve closing element a flow cross section between the valve body and the valve closing element being smaller in the flow direction upstream from the sealing seat than a flow cross section between the valve closing element and the sealing seat and being smaller than a flow cross section in the flow direction downstream from the sealing seat.

Abstract: A gas injector for directly injecting a gaseous fuel into a combustion chamber of an internal combustion engine, including a valve closure element for releasing and closing a passage opening, the valve closure element opening in the direction of a flow direction of the gas injector, a sealing seat between the valve closure element and a valve body, a flow-guiding element being situated downstream of the sealing seat in the flow direction of the gas injector and configured to form a gas jet to be injected into the combustion chamber.

Abstract: A gas injector for injecting a gaseous fuel directly into a combustion chamber of an internal combustion engine, having a valve closing element for releasing and closing a through-opening, a first seal seat between the valve closing element and a valve body, the first seal seat being a metallic seal seat having two metallic sealing partners, and having a second seal seat between the valve closing element and a stationary component, the second seal seat having at least one elastomer seal as sealing partner, the first seal seat being situated closer to the combustion chamber than is the second seal seat.

Abstract: Device for winding a material web, particularly a metal strip, wherein a coil (1) is supported during the winding process by at least two support rollers (2, 3), wherein the support rollers (2, 3) can be jointly pivoted about a pivot axis (18) between a first, substantially horizontal, position and a second position, which is inclined relative to the horizontal position, by means of a pivoting device (11).

Abstract: An injection valve for injecting fuel into a combustion chamber includes: a housing having at least one spray discharge orifice on a discharge side; a solenoid coil; a magnet armature linearly movable by the solenoid coil; a valve needle for opening and closing the spray discharge orifice, which valve needle projects through the magnet armature and is linearly movable along a longitudinal axis, the magnet armature being linearly movable in relation to the valve needle between a first stop and a second stop, the second stop being formed by a stop element having a stop face and a counter element having a counter face situated opposite the stop face, the stop element having an elastic design so that an angle between the longitudinal axis and the stop face is changed when the counter face strikes the stop face.

Abstract: A device for lateral guidance (1) of a metal strip (2) moving on a metal belt conveying device, including at least one base body module (7) includes an essentially vertical guiding plane (10), at least one wear body (12) having a wear surface (12a) can be rotated into several defined rotational positions in a controlled manner. The wear surface (12a) is substantially planar, and in all of its defined rotational positions, is parallel to the guiding plane (10). Further, a method for lateral guidance of metal strips (2) moving on a metal belt conveying device includes, after a first metal strip has passed through the metal belt conveying device, and prior to a second metal strip entering the metal belt conveying device, the wear body (12) is rotated from a first to a second defined rotational position in a controlled manner, wherein in all defined rotational positions, the wear surface (12a) is parallel to the guiding plane (10).

Abstract: A fuel injection valve for injecting fuel includes: a coil, an internal pole, a valve sleeve, and a magnetic separating element, where the valve sleeve and the magnetic separating element are embodied in one piece as a powder injection-molded component, and the valve sleeve forms a magnetic region and the magnetic separating element forms a non-magnetic region, which are intermaterially joined to one another.

Abstract: A fuel injector for fuel-injection systems of internal combustion engines. The valve includes an electromagnetic actuating element having a solenoid coil, a fixed core, an outer magnetic-circuit component and a movable armature to actuate a valve-closure member which cooperates with a valve-seat surface provided on a valve-seat member. The valve is characterized by its extremely small outside dimensions. The entire axially movable valve needle, including armature and valve-closure member, has a mass of only m<=0.8 g. The valve is suitable as a fuel injector, especially for use in fuel-injection systems of mixture-compressing internal combustion engines with externally supplied ignition.

Abstract: A driver roller (1, 18) having a rolling body (22) and at least one axle shaft journal (3, 5, 19, 32). The at least one axle shaft journal (3, 5, 19, 32) is fixed to the rolling body (22) indirectly via at least one support element (4, 6, 21, 25, 27, 29), which is fixed to the rolling body (22), by means of removable connecting means. The at least one axle shaft journal (3, 5, 32) is arranged such that the longitudinal axis of the journal is coaxial to the longitudinal axis of the rolling body (22), and the axle shaft journal is a separate component. The support element (4, 6, 21, 25, 27, 29) has the shape of a ring or a disk with a groove (30) in an end wall of the ring- or disk-shaped support element (4, 6, 21, 25, 27, 29). The support element (4, 6, 21, 25, 27, 29) has a flange (31) on which the axle shaft journal (3, 5, 19, 32) is flange-mounted. Such a driver roller can be easily assembled from modules, thereby simplifying maintenance and storage.

Abstract: A driver for a steel strip coiler, having at least one supporting driving roller mounted on a frame, and at least one driving roller, which can be adjusted with respect to the supporting driving roller and is mounted on at least one rocker connected to the frame, wherein the driving roller is attached to a bearing region of the rocker. The bearing region is open for the insertion or removal of the driving roller toward the side and/or upwardly when the rocker is placed in the operating position. The driver has a fixing mechanism for fixing the driving roller to the bearing region. The method for removing a driving roller from such a driver includes opening the fixing mechanism and removing the driving roller toward the side or upwardly from the driver.

Abstract: An injection valve for injecting fuel into a combustion chamber includes: a housing having at least one spray discharge orifice on a discharge side; a solenoid coil; a magnet armature linearly movable by the solenoid coil; a valve needle for opening and closing the spray discharge orifice, which valve needle projects through the magnet armature and is linearly movable along a longitudinal axis, the magnet armature being linearly movable in relation to the valve needle between a first stop and a second stop, the second stop being formed by a stop element having a stop face and a counter element having a counter face situated opposite the stop face, the stop element having an elastic design so that an angle between the longitudinal axis and the stop face is changed when the counter face strikes the stop face.

Abstract: Device for winding a material web, particularly a metal strip, wherein a coil (1) is supported during the winding process by at least two support rollers (2, 3), wherein the support rollers (2, 3) can be jointly pivoted about a pivot axis (18) between a first, substantially horizontal, position and a second position, which is inclined relative to the horizontal position, by means of a pivoting device (11).

Abstract: A fuel injection valve for injecting fuel includes: a coil, an internal pole, a valve sleeve, and a magnetic separating element, where the valve sleeve and the magnetic separating element are embodied in one piece as a powder injection-molded component, and the valve sleeve forms a magnetic region and the magnetic separating element forms a non-magnetic region, which are intermaterially joined to one another.

Abstract: A strip processing device includes a strip processing cartridge and is intended for a rolling mill, and relates to a method for removing the strip processing cartridge from the strip processing device. The strip processing cartridge is mounted on a bearing region on one or more rockers on a frame. The bearing region is open for insertion or removal of the strip processing cartridge sideways and/or upwards out of the frame. A fixing mechanism fixes the strip processing cartridge on the bearing region.

Abstract: A fuel injection device includes at least one fuel injector, one mounting hole in a cylinder head for the fuel injector, and a decoupling element between a valve housing of the fuel injector and the wall of the mounting hole. As a lenticular spring element, the decoupling element has a nonlinear, progressive spring characteristic curve, such that a low rigidity of the decoupling element prevails during idle operation and a high rigidity of the decoupling element prevails during nominal system pressure.

Abstract: A device and a method for changing drive rollers of drivers of a rolling mill system. There are a driver station (23) and/or a reel station (24) of the hot-rolling mill system, at least one driver roller storage station (27) and at least one driver roller conditioning station (28), viewed from the hot-rolling mill stations in the direction of the reel station on the extension of the longitudinal axis of the hot-rolling mill system. At least one manipulator (29) is displaceable at least between the driver station and the driver roller conditioning station and the driver roller storage station, and optionally also the hot-rolling station to remove, transfer and install drive rollers at each station.

Abstract: A fuel injector for fuel-injection systems of internal combustion engines. The valve includes an electromagnetic actuating element having a solenoid coil, a fixed core, an outer magnetic-circuit component and a movable armature to actuate a valve-closure member which cooperates with a valve-seat surface provided on a valve-seat member. The valve is characterized by its extremely small outside dimensions. The entire axially movable valve needle, including armature and valve-closure member, has a mass of only m<=0.8 g. The valve is suitable as a fuel injector, especially for use in fuel-injection systems of mixture-compressing internal combustion engines with externally supplied ignition.

Abstract: A driver for a steel strip coiler, having at least one supporting driving roller mounted on a frame, and at least one driving roller, which can be adjusted with respect to the supporting driving roller and is mounted on at least one rocker connected to the frame, wherein the driving roller is attached to a bearing region of the rocker. The bearing region is open for the insertion or removal of the driving roller toward the side and/or upwardly when the rocker is placed in the operating position. The driver has a fixing mechanism for fixing the driving roller to the bearing region. The method for removing a driving roller from such a driver includes opening the fixing mechanism and removing the driving roller toward the side or upwardly from the driver.

Abstract: In a reel furnace having a strip reeling device, the strip reeling device comprising a reel shaft, a reel drum supported on the reel shaft and at least one stirrup clamp, the reel shaft passing through a furnace wall delimiting the inner space of the reel furnace and being supported rotatably in supporting bearings outside the reel furnace, the reel drum and the at least one stirrup clamp being positioned with respect to one another by means of a connection element, and a gap for receiving a strip head being set between the reel drum and the at least one stirrup clamp. The useful life of the reel drum is appreciably increased and a strip thickness-dependent setting of the entry gap for the hot-rolled strip is ensured when the reel drum is designed as a closed body and the connection element is designed as an actuating device for fixing a specific gap width between the reel drum and the stirrup clamp and for clamping a strip head which has entered the gap.

Abstract: The invention relates to an apparatus and a method for cropping the ends of or for separating test pieces from rolled strip wound into bundles. An apparatus is disclosed which, by means of an outwardly pivotable bottom roller (2) and guide devices (5, 6, 7, 8, 13, 14) for guiding the strip end to the shears, also makes it possible to process strips which are thicker or of greater firmness and are wound into bundles (10). Furthermore, a method is specified, which allows a reliable sampling and, if appropriate, inspection of the sample from strips wound into bundles, a closed bundle being obtained again after sampling.