Abstract: The fuel-injection device is characterized by an especially low-noise design. The fuel-injection device includes at least one fuel injector and a fuel rail having at least one pipe connection, the fuel injector being introduced into a receiving bore of the pipe connection, and the fuel rail having a discharge opening to supply fuel to the fuel injector. Provided between the fuel injector and the fuel rail is a pressure-wave guide connecting both, in such a way such that dynamic pressure fluctuations in the fuel injector are able to be routed largely past the volume of the receiving bore of the pipe connection. The fuel-injection device is especially suitable for the direct injection of fuel into a combustion chamber of a mixture-compressing internal combustion engine having external ignition, but it is also suitable for the injection of fuel into an intake manifold.

Abstract: Dispersion which is free of binders and which contains silica and at least one superplasticizer, the silica being a precipitated silica having a surface area greater than 50 m2/g, the aggregates and/or agglomerates in the dispersion having a median diameter of less than 1 ?m and the proportion of silica being from 5 to 50% by weight, based on the total amount of the dispersion, and a process for the preparation thereof and the use thereof as a concrete admixture in cement-containing preparations.

Abstract: The invention relates to silica dispersions that have a long shelf-life, to a method for producing the same and to their use in the construction industry as concrete admixtures and in the paper industry for producing or coating paper.

Abstract: The invention relates to a junction box for solar panels, with which the heat produced in the protecting diodes, MOSFETs or other corresponding power semiconductors of a solar panel can be reliably dissipated. In the junction box, the electronic components are pressed against the housing (1) or into recesses (3) corresponding to the geometry of the components by means of pressure elements, and electrical isolation, preferably a thermally conductive silicone rubber, is provided between the housing (1) and the components.

Abstract: The fuel-injection device is characterized by an especially low-noise design. The fuel-injection device includes at least one fuel injector and a fuel rail having at least one pipe connection, the fuel injector being introduced into a receiving bore of the pipe connection, and the fuel rail having a discharge opening to supply fuel to the fuel injector. Provided between the fuel injector and the fuel rail is a pressure-wave guide connecting both, in such a way such that dynamic pressure fluctuations in the fuel injector are able to be routed largely past the volume of the receiving bore of the pipe connection. The fuel-injection device is especially suitable for the direct injection of fuel into a combustion chamber of a mixture-compressing internal combustion engine having external ignition, but it is also suitable for the injection of fuel into an intake manifold.

Abstract: The invention relates to a junction box for solar panels, with which the heat produced in the protecting diodes, MOSFETs or other corresponding power semiconductors of a solar panel can be reliably dissipated. In the junction box, the electronic components are pressed against the housing (1) or into recesses (3) corresponding to the geometry of the components by means of pressure elements, and electrical isolation, preferably a thermally conductive silicone rubber, is provided between the housing (1) and the components.

Abstract: The invention relates to methods for manufacturing a water-in-water polymer dispersion containing polymer A and at least one polymer dispersant B, according to which monomers, which are dispersed in an aqueous phase containing water-soluble dispersant B, are subjected to radical polymerization, possibly following the addition of a water-soluble salt, and, after polymerisation, a water-soluble acid is added to the water-soluble and/or water-swellable polymer A obtained in this way, where the acid is added in quantities of 0.1 to 5% by weight and the salt in quantities of up to a maximum of 3% by weight, each referred to the total dispersion, and the total quantity of salt and acid amounts to a maximum of 5% by weight, referred to the total dispersion.

Abstract: A fuel injector with a magnetic coil which cooperates with an armature acted upon by a restoring spring, the armature forming an axially movable valve part with a valve needle. A valve-closure member which forms a sealing seat with a valve-seat member is provided at the valve needle. At least one damping element is disposed in an opening of the fuel injector through which fuel flows.

Abstract: A dual component injector, especially for internal combustion engines, has a nozzle body, which has a nozzle outlet, and a valve needle for opening and closing the nozzle outlet. A first feed channel is used for supplying a first fluid to the nozzle outlet, and a second feed channel is used for supplying a second fluid to the nozzle outlet. Optionally, a fluid chamber, which is located in the nozzle body, is connected to the nozzle outlet. The second feed channel is connected to the fluid chamber or to the first feed channel via at least two bored holes. The bored holes open out in the fluid chamber or in the first feed channel in such a way that the second fluid produces a swirling flow pattern in the fluid chamber or in the first feed channel.

Abstract: The invention relates to a calorimeter comprising a reactor (1) that is fitted in an intermediate thermostat (2). Said intermediate thermostat (2) cooperates with an external thermostat (3) and comprises a metal block (4) as the heat transfer medium. The inventive calorimeter can be produced at lower costs than those comprising a double-walled reaction vessel and allows especially IR probe analysis.

Abstract: The invention relates to a device for particle agglomeration, comprising a supply line carrying a fluid with a particle load, and a probe which is connected to the supply line. Data related to a parameter PT which is dominated by the particle size, and to a parameter PK which is dominated by the concentration of the particle load in the fluid, can be determined by means of said probe, via a measuring signal. The invention also relates to a method for controlling the agglomeration of particles and to the use of the inventive device or method for treating waste water.

Abstract: The invention relates to methods for manufacturing a water-in-water polymer dispersion containing polymer A and at least one polymeric dispersant B, according to which monomers, which are dispersed in an aqueous phase containing water-soluble dispersant B, are subjected to radical polymerisation, possibly following the addition of a water-soluble salt, and, after polymerisation, a water-soluble acid is added to the water-soluble and/or water-swellable polymer A obtained in this way, where the acid is added in quantities of 0.1 to 0.5% by weight and the salt in quantities of up to a maximum of 3% by weight, each referred to the total dispersion, and the total quantity of salt and acid amounts to a maximum of 5% by weight, referred to the total dispersion.

Abstract: A dual component injector, especially for internal combustion engines, has a nozzle body, which has a nozzle outlet, and a valve needle for opening and closing the nozzle outlet. A first feed channel is used for supplying a first fluid to the nozzle outlet, and a second feed channel is used for supplying a second fluid to the nozzle outlet. Optionally, a fluid chamber, which is located in the nozzle body, is connected to the nozzle outlet. The second feed channel is connected to the fluid chamber or to the first feed channel via at least two bored holes. The bored holes open out in the fluid chamber or in the first feed channel in such a way that the second fluid produces a swirling flow pattern in the fluid chamber or in the first feed channel.

Abstract: A fuel injector (1) is provided with a magnetic coil (10) which cooperates with an armature (20) acted upon by a restoring spring (23), the armature forming an axially movable valve part with a valve needle (3). A valve-closure member (4) which forms a sealing seat with a valve-seat member (5) is provided at the valve needle (3). At least one damping element (37) is disposed in an opening (36) of the fuel injector (1) through which fuel flows.

Abstract: The invention relates to a calorimeter comprising a reactor (1) that is fitted in an intermediate thermostat (2). Said intermediate thermostat (2) cooperates with an external thermostat (3) and comprises a metal block (4) as the heat transfer medium. The inventive calorimeter can be produced at lower costs than those comprising a double-walled reaction vessel and allows especially IR probe analysis.

Abstract: The present invention relates to a cooling device for electronic components, in particular for cooling microprocessors, which has at least one passive thermo-conducting cooling element 12, wherein at least part of said passive cooling element 12 contacts at least one heat transfer medium 20 which is in a solid state of aggregation. Said heat transfer medium 20 in this case is a phase change material (PCM) which has a much higher heat absorption capacity than water and which is, moreover, designed as a latent heat accumulator, which heat transfer medium 20 will store the amount of heat generated by the load on said electronic component that can no longer be absorbed and carried off by said passive cooling element 18, at the same time retaining its solid state of aggregation, and release said heat again at a time when the load on said electronic component is lower.

Abstract: An apparatus for removing copies and/or documents from a machine has a catch and removal tray (2) which can be extended telescopically out of the machine (1). The catch and removal tray (2) consists of a fixed section (3) inside the machine (1) and a movable section (4) which can be drawn out of the machine (1). The fixed section of the tray (3) acts as a catch tray for documents processed by the machine (1) and has a drive mechanism (6, 7, 19) which drives a sliding panel (5) which extends downwards into the fixed section of the tray (3) and which pushes the stack of documents (8) from the fixed section of the tray (3) into the extended movable section of the tray (4). The fixed section of the tray (3) has a photoelectric cell (20) which activates the sliding panel (5) when the stack of documents reaches the maximum height.

Abstract: A compact and precise phoropter of low requirements as to material and favorable as to kinematics comprises two observation channels in each of which a plurality of equal sized disks are rotatably and coaxially arranged about an axle, each of said disks being provided with a number of element sites where spherical lenses, cylindrical lenses, cross cylinders and further optically effective accessory elements are located. At least the cylindrical lenses are seated for rotation on said disks and are provided with first drive wheels, the diameters of the latter being substantially equal to the diameter of a second drive wheel rotatable with the axle and being associated to the respective disk. The diameters of the entire disks are determined by the diameters of the first and the second drive wheels and are at least three-fold the diameter of the first drive wheels.

Abstract: The present invention relates to a microscopic electromagnetic radiation transmitter or detector and a so-called near-field probe (1) whose body takes the form of a polyhedron point and consists of a material which is at least partially permeable to electromagnetic radiation in the spectral region used. The polyhedron point is delimited by an imaginary base surface beyond which the substantial part of the body is continued to form a total probe body, which is not defined in greater detail. The polyhedron point has "n " side faces and edges leading to an acute point (2) are formed between adjacent side faces. According to the invention, at least two side faces of the body of the polyhedron probe (1) are coated with thin, electrically conductive layers which absorb some of the electromagnetic radiation in the spectral region used, preferably consist of materials such as aluminum, gold or silver and are less than 0.2 .mu.m thick.

Abstract: A phoropter comprises two observation channels, in each of said observation channels a plurality of disk-shaped mounts, rotatably seated about at least one axis, for mounting optically effective members and drive means for rotating said mounts. The drive means are piezoelectric motors, each of which is, on the one hand, connected to a base and, on the other hand, provided with a driving end portion, preferably a driven member which executes a rotating motion. The driven member is, compared to the piezoelectric motor, of small design.