Method, device and computer program for operating an internal combustion engine, and internal combustion engine
US6877487B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2001 |
| Grant date | Apr 12, 2005 |
| Priority date | — |
| Expiry date | Nov 25, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2200/503
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An internal combustion engine (10) is operated by a method wherein the fuel is supplied via a magnetic valve (28) having a coil (34). The injected fuel quantity is influenced by the duration of the drive of the magnetic valve (28). In the method, the temperature (evtmod) of a region (26) of the magnetic valve (28) is determined and the drive duration is corrected in dependence upon temperature. In order to make the correction still more precise, a temperature (evtmod) of the magnetic valve (28) is determined from at least one usually measured temperature (tans, tmot) and the drive duration (ti_tvu_w) is so corrected (tvsp_w) that the temperature dependency of the characteristics of the magnetic coil (34) of the magnetic valve (28) is considered. Furthermore, a model is suggested in which (starting from an operating temperature) the temperature trace is simulated after shut-off of the engine and/or for the restart of the engine by means of two factors for the warmup and cool down.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.