Method for estimating the speed of an engine in a predefined position
US10041966B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Aug 26, 2013 |
| Grant date | Aug 7, 2018 |
| Priority date | — |
| Expiry date | Feb 1, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02N2300/2006
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
This method includes the following steps: —determining the angular position and the rotational speed for a first point of measurement and a second point of measurement of a engine position sensor, —determining at least one gradient of the rotational speed different from the speed gradient between the two points of measurement of the previous step, —approximating the actual rotational speed curve with respect to the angular position with a polynomial function of degree two, and —carrying out a calculation, in advance, for determining an estimated rotational speed at the predefined position, the position defining a future angular position of the crankshaft, by applying the polynomial function to the predefined future position. The method can be used to predict engine rotation reversal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.