Method for synchronizing an internal combustion engine based on the angular position of a rotating part

Abstract

The invention relates to a method for rotational position determination of an internal combustion engine having a camshaft to which a camshaft sensor is assigned and having a crankshaft to which a crankshaft rotational position transducer is assigned. A control apparatus for controlling the engine includes at least one configurable control apparatus input. After detecting a fault function of the crankshaft rotational position transducer, the control apparatus input of the control apparatus switches to the evaluation of one of the flanks (9.1, 10.1, 11.1, 12.1; 9.2, 10.2, 11.2, 12.2) or of all flanks (9.1, 10.1, 11.1, 12.1; 9.2, 10.2, 11.2, 12.2) of pulse segments (A, C, E, G). Thereafter, an injection of fuel takes place into the cylinders of the engine until an rpm gradient is detected which makes possible a position determination of the rotational position of the crankshaft of the engine. After the position determination of the engine, the engine dynamic is determined via evaluation of all segment times (A, B, C, D, E, F, G, H) as well as the injection time point and the duration of the injection operations is determined, adjusted and corrected.

Dependencies are inferred from the claim text.