Engine crankshaft position recognition and tracking method applicable to cam and crankshaft signals with arbitrary patterns
US7076361B2 · kind B2 · utility
5Cited by
10References
20Claims
0Family size
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Key dates
| Filing date | Mar 29, 2005 |
| Grant date | Jul 11, 2006 |
| Priority date | — |
| Expiry date | Mar 29, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/2422
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.