摘要:
A directly injecting internal combustion engine has at least one cylinder which has a combustion space and in which a piston executes an oscillating movement, and an injection nozzle for the injection of fuel into the combustion space. The piston has a piston recess which has in its central region an elevation extending in the direction of a cylinder head. A surface of the piston recess which adjoins the elevation in the direction of the recess edge is connected to the elevation via a radius so an injection jet impinging in this region and injected at the earliest possible time point is distributed both in the elevation direction and in the recess edge direction. The surface adjoining the elevation in that direction has an extent in that direction such that an injection jet injected at the latest possible time point impinges onto the surface and is distributed both in the elevation direction and in the recess edge direction.
摘要:
A directly injecting internal combustion engine has at least one cylinder which has a combustion space and in which a piston executes an oscillating movement, and an injection nozzle for the injection of fuel into the combustion space. The piston has a piston recess which has in its central region an elevation extending in the direction of a cylinder head. A surface of the piston recess which adjoins the elevation in the direction of the recess edge is connected to the elevation via a radius so an injection jet impinging in this region and injected at the earliest possible time point is distributed both in the elevation direction and in the recess edge direction. The surface adjoining the elevation in that direction has an extent in that direction such that an injection jet injected at the latest possible time point impinges onto the surface and is distributed both in the elevation direction and in the recess edge direction.
摘要:
The invention relates to a grooved rail for rail vehicles provided with flange wheels, said grooved rail comprising a rail head (5) provided with a running rail (2), a flange groove (3), and a counterrail (4), in addition to a rail web (6), a rail base (7), and lateral rail chambers (8,9) extending between the rail head and the rail base. The running rail comprises a vehicle-guiding flange (10) extending towards the flange groove, said flange being asymmetrically arranged in relation to the rail head, when the depth of the flange groove is more than >20 mm in relation to an essentially horizontally extending axis (11) of the rail web, in such a way that the width part (B1) of the rail base, on the side of the running rail, is larger, at least by the factor 1.2, than the width part (B2) on the side of the counterrail.
摘要:
Provided is a grooved rail for rail vehicles having flanged wheels, the grooved rail including a rail head provided with a running rail, a flange groove, and a counterrail, in addition to a rail web, a rail base, and lateral rail chambers extending between the rail head and the rail base. The running rail includes an asymmetrically-arranged vehicle-guiding flange, extending towards the flange groove, the asymmetrically-arranged flange formed in such a way that the width part of the rail base, on the side of the running rail, is larger than the width part on the side of the counterrail by a factor of at least 1.2. When the depth of the flange groove is >20 mm, the flange has a flange inclination of >78° with respect to an essentially horizontal axis of the rail web.
摘要:
A value document and an embossing foil for the production thereof comprise a security feature in the form of a combination of a magnetic layer and a security layer which has an optical-diffraction effect. The security layer structure that has the optical-diffraction effect is provided with a reflective metal layer. To prevent damage to the reflective metal layer by particles of the magnetic layer, the metal layer is made of suitably resistant metal and/or a barrier layer is provided between the metal layer and the magnetic layer.
摘要:
In a method of producing marking or the like on a surface by means of laser radiation, at least two layers of lacquer of different colors are successively applied to the surface and at least the outer layer which is towards the viewer of the surface is removed by laser radiation in a region-wise manner to expose the second layer therebeneath, thereby producing the marking on the surface. At least the outer layer is applied by a transfer operation from a carrier material, in order thereby to produce a uniform thickness for that layer and thus a highly uniform laser-engraving effect. Also described is the use of embossing foils and more especially hot embossing foils of a particular configuration in such a method.
摘要:
An embossing foil has three-dimensional patterning which does not extend uniformly over the entire surface of the foil but only over regions thereof. The region-wise three-dimensional patterning can be produced by the surface of the backing film, which is three-dimensionally patterned throughout, being covered in a region-wise manner with a lacquer forming a smooth surface, or by a thermoplastically deformable layer being provided in the interior of a decorative lacquer layer on the embossing foil, the surface of the thermoplastically deformable layer being three-dimensionally patterned only in a region-wise manner.