Method for determining the reversal of direction of rotation of an engine
US7735360B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2006 |
| Grant date | Jun 15, 2010 |
| Priority date | — |
| Expiry date | May 24, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02N11/0814
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Method for determining the reversal of the direction of engine rotation for internal combustion engines having a crankshaft fitted with a target wheel having teeth, one of which is a long tooth, with a unidirectional crankshaft position sensor delivering a signal used for counting teeth and with an engine management device including a processor and a model of the engine behavior in a stalling phase, including: recording the signal and measuring each time difference between two successive edges of the signal, calculating, on the basis of the model, the time variation of the engine position from the time differences between the edges of the signal, and estimating the stopped position of the engine, wherein the model is a second-order polynomial function of time, and the position of reversal of the direction of rotation is estimated from the calculation of the peak position of this second-order polynomial function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.