Method of determining the rough engine run of an internal combustion engine
US5524480A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1992 |
| Grant date | Jun 11, 1996 |
| Priority date | — |
| Expiry date | Mar 17, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B3/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method is proposed for determining the rough engine run of an internal combustion engine (10), wherein a signal processing arrangement (13-19, 30, 50, 51) determines the engine rotation from a signal (Ub) appearing at a generator (11) driven by the internal combustion engine (10) or at a load (12) connected to the generator (11). The signal (Ub) is composed of signal components including long period durations (Tm) and signal components including short period durations (Tmn) which are evaluated separately as well as together in an evaluation unit (15). The signal component including the short period durations (Tmn) can be derived from commutation oscillations (40) which occur within signal Ub if the generator (11) is configured as an alternating current/three-phase current generator and is equipped with rectifiers and phase fan-in.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.