Method for detecting rotational speed

Details Method for detecting rotational speed Method for detecting rotational speed

2005-03-29

2005-03-29

Barlow, John (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system

Speed

C702S145000, C073S116070

Reexamination Certificate

active

06873930

ABSTRACT:
The invention relates to a method for detecting the rotational speed of an internal combustion engine (1). According to the invention, a sector wheel (4) connected to a crankshaft (3) is scanned and the duration of the scanning of a sector of a specific size is determined. Correction factors which arc dependent on the working parameters are then extracted from the characteristics in order to correct the measured duration in relation to the rotational speed oscillations occurring periodically during the operation of the internal combustion engine (1).

REFERENCES:
patent: 5628291 (1997-05-01), Wrobel et al.
patent: 5789658 (1998-08-01), Henn et al.
patent: 37 05 586 (1988-09-01), None
patent: 195 44 720 (1997-03-01), None
patent: 196 22 042 (1997-12-01), None
patent: 0 429 819 (1991-06-01), None
patent: WO 0177692 (2001-10-01), None

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