Abstract:
The aim of the invention is to provide a device for pre-heating the fuel for the cold start of a diesel powered internal combustion engine that does not require a bulky pencil-type glow plug. To this end, the inventive fuel nozzle is provided with a resistance heating layer (20) that especially consists of a ceramic material and that is disposed in the zone of the flow path of the fuel to be injected.
Abstract:
The invention relates firstly to an abrasive grain (110) with a surface having at least a first face (120) with a first outline (121), and at least one second face (125) with a second outline (126). The first outline (121) does not contain any vertex, but the second outline (126) contains at least one vertex (127). The abrasive grain (110) may comprise a ceramic material, especially polycrystalline alpha-Al2O3. Additionally disclosed are collectives of abrasive grains (110), methods for producing abrasive grains (110), casting moulds, abrasive articles, methods for producing abrasive articles and methods for grinding a surface.
Abstract translation:本发明涉及在一方面,磨粒(110)具有一表面,至少一个第一表面(120)和具有第二外轮廓(126)的第一外轮廓(121)和至少一个第二表面(125)。 第一外轮廓(121)不包含角,但所述第二外轮廓(126)包括至少一个角部(127)。 磨粒(110)可以包括陶瓷材料,特别是多晶α-Al 2 O 3。 此外,磨料颗粒(110)的聚集体中,公开了用于研磨表面的制造磨粒(110),压铸模具,磨料制品,使得磨料制品和方法的方法的方法。
Abstract:
Disclosed are a composite material, a composite structure made of the same, and a method for producing a metal-ceramic composite material or a composite structure. The composite material or the composite structure is produced by means of the following method: In a first step, a porous ceramic bisque is produced from a ceramic starting material; in a second step, the porous ceramic bisque is infiltrated with a molten metal. The ceramic starting material comprises a ceramic main component and a ceramic secondary component that reacts with said main component. The secondary component at least partially reacts with the main component during the first and/or the second step.
Abstract:
The invention relates to a ceramic sheathed element glow plug. According to the invention, a metallic tubular holder holds a ceramic u-shaped heating device at its combustion chamber side end in an unsupported manner and has a terminal stud on the other side, away from the combustion chamber, for applying a voltage to the ceramic heating device. Said ceramic heating device has a section with a larger diameter at the end encompassed by the holder and is covered with an insulating layer which has recesses for an electrical contact. One recess is provided on the face of the ceramic heating device away from the combustion chamber and a second recess is provided on the outer wall of the ceramic heating device. An electroconductive sealing mass is located between the outer wall of the ceramic heating device and the inner wall of the holder.