Abstract: In a method and apparatus for controlling the fuel metering for an internal combustion engine, an electrical displacement sensor is used for fuel injection pumps with an injection quantity control element, which is adjusted, via a control lever, proportionally to the electrical displacement sensor, whose displacement change causes an electrical signal proportional to this displacement change, this electrical signal being fed into an electronic control unit for readjusting the injection quantity control element.In order to avoid supply quantity scatter, control can be directed towards a calibration point situated on a supply quantity characteristic of the fuel injection pump, this calibration point preferably being located in the region of the maximum fuel supply quantity, and the output voltage of the electrical displacement sensor can be compared with a specified required value.

Abstract: A valve of an internal combustion engine in which for purposes of increasing the strength within the area of the annular groove for the conical pieces retaining the spring plate for the valve springs, the corners of the annular groove are rounded-off with a relatively small radius which passes over into the cylindrical part of the annular groove by way of a larger radius; the upper portion of the valve stem is provided with an outer layer which is induction-hardened and which extends up to within the clamping area of the conical pieces.