Method for determining an average rotational speed of a rotating transmission shaft of an internal combustion engine
OwnerMatthias Cwik, Markus Roessle +2inventors
InventorsMatthias Cwik, Markus Roessle, Ewald Mauritz, Stefan Tumback
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Abstract
A method for determining an average rotational speed of a rotating transmission shaft of an internal combustion engine to a rotational position is described, the rotating transmission shaft taking on various rotational positions and having an actual instantaneous rotational speed at a first time in the rotational position. At a first approximation in a first step, an approximated average rotational speed is determined, as the difference of the actual rotational speed at the first time and in the rotational position, and the product of a weighted amplitude and an angle-dependent amplitude factor.
Claims8
A method for determining an average rotational speed of a rotating transmission shaft of an internal combustion engine to a rotational position, wherein the rotating transmission shaft takes on various rotational positions and has an actual instantaneous rotational speed at a first time in the rotational position, the method comprising:
- determining, at a first approximation in a first step of an iteration, an approximated average rotational speed, as a difference of the actual rotational speed at the first time and in the rotational position, and a product of a weighted amplitude and an angle-dependent amplitude factor.
Dependencies are inferred from the claim text.