Abstract: A sensor has a membrane, on which at least one resistor element is situated. The membrane has a membrane layer which is composed of a plurality of partial layers. In addition, a covering layer is provided which is composed of a plurality of partial layers. The partial layers of the membrane and the covering layer are selected so that both in the membrane and in the covering layer light tensile stresses are set, the tensile stresses preferably being roughly the same.

Abstract: A microvalve includes a chamber, with a closing member being movable therein. The microvalve is made of two layers. The two layers of the microvalve are formed separately by being impressed as a mold into a moldable material and then filling the mold with metal by a galvanizing process. The two layers are joined together with the aid of a joining layer.

Abstract: A fuel injection valve for internal combustion engines with a valve member which is displaced in a bore in a valve body by the fuel pressure, counter to the action of a closing spring. The valve body has at a combustion-space end, a valve head which on a side which faces the valve body is arranged a sealing surface which interacts with a valve seat provided on the combustion-space end of the valve body, forming a sealing cross section, and including injection apertures which permit a flow of fuel from a pressure space in the valve body to the combustion space of the internal combustion engines and has an aperture cross section which can be varied as a function of the stroke of the valve member.

Abstract: The invention relates to an injection nozzle for a diesel injection system in motor vehicles, having at least one spray passage penetrating an injection nozzle and to a process for manufacturing the injection nozzle. The invention provides for the injection nozzle to be formed from two parts which engage with one another as a form-fit and are in contact on generated surfaces and for the spray passages to be configured as open-edged depressions on at least one of the generated surfaces.