Patent ID: 8656762
Filing Date: 2014-02-25
Classification: F02D,G01D

Abstract:
1. A method for detecting a first rotation angle of a first shaft of an engine, the method comprising: providing a first marking carrier with sensor-readable markings, the markings forming a first marking pattern, the first marking pattern has marking sections having at least one first marking section and a second marking section, the first marking carrier being caused to be rotated by a first shaft, wherein there is a proportionality between a rotation angle of the first shaft and a rotation angle of the first marking carrier; scanning the first marking carrier by a first sensor; generating a first sensor signal by the first sensor during the scanning, the first sensor signal being modulated via the markings on the first marking carrier; and providing a computing unit having a memory unit with a memory area with stored marking sections having at least one first stored marking section and a second stored marking section, a sensor signal input, and a timer with a time signal, wherein a correlation between a time course of the first sensor signal and the time signal is made by the computing unit, the computing unit performing the process steps of: