Abstract: A device for controlling the injection of fuel in an internal combustion engine is described, in which device the position of the crankshaft and camshaft is known in the control device directly after the internal combustion engine is switched on. This is achieved either with the aid of an absolute sensor system or with the aid of a coasting detection in which the angle position of the crankshaft and camshaft is stored in the stationary state. Directly after the internal combustion engine is switched on again, a correctly phased injection into an open inlet valve is carried out. After the start of turning, further injections into one or more open or still closed inlet valves are triggered. After synchronization has taken place, the control device switches over to the normal injection.

Abstract: A sensor arrangement for cylinder detection in a multi-cylinder internal combustion engine is disclosed, having a crankshaft sensor with an increment disc with reference mark and a camshaft sensor with long and short segments as well as short and long intermediate spaces between the segments. By means of common evaluation of the pulse sequences supplied by the two sensors, the length of the high phases and low phases can be determined. Since the reference mark is also taken into account during the evaluation, the number of different segment lengths on the camshaft sensor disc can be reduced and a rapid and unambiguous cylinder detection can be achieved. The evaluation of the crankshaft signal and camshaft signal permits a reliable control of the internal combustion engine. In the event of failure of the crankshaft sensor, emergency running of the internal combustion engine can be realized solely with the aid of the camshaft sensor.

Abstract: A device for detecting the position of a shaft of an internal combustion engine is described, in which a sensor disc which is connected to the shaft and has at least one reference mark is sensed by at least one sensor and the output signals obtained are evaluated in the control device. So that the position of the shaft is known immediately after the internal combustion engine is started up, the last position to be determined after the internal combustion engine is switched off and after the shaft coasts to a standstill is stored in a non-volatile memory of the control device and, after the internal combustion engine is switched on again, is used to determine and output the first fuel injections during a starting phase.In order to improve the accuracy, a detection of the direction of rotation is additionally carried out so that a correction can take place if the shaft turns backwards to a certain degree as a result of the engine swinging back.