Method of determining the crankshaft position of an internal...

Internal-combustion engines – Spark ignition timing control – Electronic control

Reexamination Certificate

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C123S406620

Reexamination Certificate

active

06895931

ABSTRACT:
A method for determining the crankshaft position of an internal combustion engine is described with which, in the event of failure of the crankshaft sensor, the crankshaft position may be determined with relative precision at all times. For this purpose, the camshaft position is continuously detected by an absolute angle sensor, preferably in a defined time grid. By analyzing the camshaft positions detected in that way, a value for the instantaneous crankshaft position is determined.

REFERENCES:
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patent: 5269274 (1993-12-01), Flaetgen et al.
patent: 5469823 (1995-11-01), Ott et al.
patent: 5622153 (1997-04-01), Ott et al.
patent: 5671145 (1997-09-01), Krebs et al.
patent: 6578550 (2003-06-01), Rupp et al.
patent: 43 13 331 (1994-10-01), None

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