ENGINE CRANKSHAFT POSITION RECOGNITION AND TRACKING METHOD APPLICABLE TO CAM AND CRANKSHAFT SIGNALS WITH ARBITRARY PATTERNS

Title:

ENGINE CRANKSHAFT POSITION RECOGNITION AND TRACKING METHOD APPLICABLE TO CAM AND CRANKSHAFT SIGNALS WITH ARBITRARY PATTERNS

Document Type and Number:

WIPO Patent Application WO2005094294

Kind Code:

A3

Abstract:

A method and system for providing data representing crankshaft position. For each rising edge of the crankshaft signal, a position value and a factor value are stored in a look-up table. Cam and crankshaft signals are used to locate an initial crankshaft position. This initial position value is used as a pointer to the look-up table, and incremented with each rising pulse of the crankshaft signal. Data from the table is used to extrapolate crankshaft position from crankshaft signal values to a desired resolution in degree angle units.

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Inventors:

WANG JUNMIN (US)
SARLASHKAR JAYANT V (US)

Application Number:

PCT/US2005/010296

Publication Date:

June 29, 2006

Filing Date:

March 28, 2005

Export Citation:

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Assignee:

SOUTHWEST RES INST (US)
WANG JUNMIN (US)
SARLASHKAR JAYANT V (US)

International Classes:

G06F19/00; G01L3/26; G01M15/00; G01M15/06; G06G7/70

Foreign References:

US5699769A	1997-12-23
US5548995A	1996-08-27
US5522352A	1996-06-04

Other References: